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1
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1
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2 // Compiler implementation of the D programming language
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3 // Copyright (c) 1999-2007 by Digital Mars
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4 // All Rights Reserved
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5 // written by Walter Bright
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6 // http://www.digitalmars.com
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7 // License for redistribution is by either the Artistic License
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8 // in artistic.txt, or the GNU General Public License in gnu.txt.
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9 // See the included readme.txt for details.
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10
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13 #include <assert.h>
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14
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15 #include "mem.h"
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16
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17 #include "statement.h"
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18 #include "expression.h"
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19 #include "cond.h"
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20 #include "init.h"
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21 #include "staticassert.h"
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22 #include "mtype.h"
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23 #include "scope.h"
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24 #include "declaration.h"
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25 #include "aggregate.h"
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26 #include "id.h"
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27 #include "hdrgen.h"
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28 #include "parse.h"
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29
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30 /******************************** Statement ***************************/
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31
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32 Statement::Statement(Loc loc)
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33 : loc(loc)
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34 {
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35 #ifdef _DH
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36 // If this is an in{} contract scope statement (skip for determining
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37 // inlineStatus of a function body for header content)
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38 incontract = 0;
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39 #endif
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40 }
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41
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42 Statement *Statement::syntaxCopy()
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43 {
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44 assert(0);
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45 return NULL;
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46 }
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47
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48 void Statement::print()
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49 {
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50 fprintf(stdmsg, "%s\n", toChars());
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51 fflush(stdmsg);
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52 }
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53
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54 char *Statement::toChars()
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55 { OutBuffer *buf;
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56 HdrGenState hgs;
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57
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58 buf = new OutBuffer();
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59 toCBuffer(buf, &hgs);
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60 return buf->toChars();
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61 }
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62
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63 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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64 {
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65 buf->printf("Statement::toCBuffer()");
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66 buf->writenl();
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67 }
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68
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69 Statement *Statement::semantic(Scope *sc)
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70 {
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71 return this;
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72 }
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73
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74 // Same as semantic(), but do create a new scope
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75
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76 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue)
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77 { Scope *scd;
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78 Statement *s;
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79
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80 scd = sc->push();
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81 if (sbreak)
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82 scd->sbreak = sbreak;
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83 if (scontinue)
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84 scd->scontinue = scontinue;
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85 s = semantic(scd);
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86 scd->pop();
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87 return s;
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88 }
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89
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90 void Statement::error(const char *format, ...)
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91 {
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92 va_list ap;
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93 va_start(ap, format);
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94 ::verror(loc, format, ap);
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95 va_end( ap );
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96 }
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97
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98 int Statement::hasBreak()
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99 {
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100 //printf("Statement::hasBreak()\n");
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101 return FALSE;
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102 }
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103
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104 int Statement::hasContinue()
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105 {
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106 return FALSE;
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107 }
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108
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109 // TRUE if statement uses exception handling
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110
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111 int Statement::usesEH()
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112 {
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113 return FALSE;
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114 }
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115
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116 // TRUE if statement may fall off the end without a throw or return
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117
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118 int Statement::fallOffEnd()
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119 {
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120 return TRUE;
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121 }
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122
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123 // TRUE if statement 'comes from' somewhere else, like a goto
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124
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125 int Statement::comeFrom()
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126 {
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127 //printf("Statement::comeFrom()\n");
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128 return FALSE;
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129 }
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130
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131 /****************************************
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132 * If this statement has code that needs to run in a finally clause
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133 * at the end of the current scope, return that code in the form of
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134 * a Statement.
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135 * Output:
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136 * *sentry code executed upon entry to the scope
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137 * *sexception code executed upon exit from the scope via exception
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138 * *sfinally code executed in finally block
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139 */
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140
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141 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally)
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142 {
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143 //printf("Statement::scopeCode()\n");
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144 //print();
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145 *sentry = NULL;
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146 *sexception = NULL;
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147 *sfinally = NULL;
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148 }
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149
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150 /*********************************
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151 * Flatten out the scope by presenting the statement
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152 * as an array of statements.
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153 * Returns NULL if no flattening necessary.
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154 */
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155
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156 Statements *Statement::flatten(Scope *sc)
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157 {
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158 return NULL;
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159 }
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160
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161
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162 /******************************** ExpStatement ***************************/
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163
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164 ExpStatement::ExpStatement(Loc loc, Expression *exp)
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165 : Statement(loc)
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166 {
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167 this->exp = exp;
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168 }
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169
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170 Statement *ExpStatement::syntaxCopy()
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171 {
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172 Expression *e = exp ? exp->syntaxCopy() : NULL;
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173 ExpStatement *es = new ExpStatement(loc, e);
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174 return es;
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175 }
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176
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177 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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178 {
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179 if (exp)
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180 exp->toCBuffer(buf, hgs);
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181 buf->writeByte(';');
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182 if (!hgs->FLinit.init)
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183 buf->writenl();
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184 }
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185
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186 Statement *ExpStatement::semantic(Scope *sc)
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187 {
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188 if (exp)
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189 {
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190 //printf("ExpStatement::semantic() %s\n", exp->toChars());
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191 exp = exp->semantic(sc);
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192 exp = resolveProperties(sc, exp);
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193 exp->checkSideEffect(0);
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194 exp = exp->optimize(0);
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195 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0);
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196 }
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197 return this;
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198 }
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199
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200 int ExpStatement::fallOffEnd()
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201 {
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202 if (exp)
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203 {
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204 if (exp->op == TOKassert)
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205 { AssertExp *a = (AssertExp *)exp;
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206
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207 if (a->e1->isBool(FALSE)) // if it's an assert(0)
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208 return FALSE;
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209 }
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210 else if (exp->op == TOKhalt)
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211 return FALSE;
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212 }
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213 return TRUE;
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214 }
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215
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216 /******************************** CompileStatement ***************************/
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217
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218 CompileStatement::CompileStatement(Loc loc, Expression *exp)
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219 : Statement(loc)
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220 {
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221 this->exp = exp;
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222 }
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223
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224 Statement *CompileStatement::syntaxCopy()
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225 {
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226 Expression *e = exp->syntaxCopy();
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227 CompileStatement *es = new CompileStatement(loc, e);
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228 return es;
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229 }
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230
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231 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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232 {
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233 buf->writestring("mixin(");
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234 exp->toCBuffer(buf, hgs);
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235 buf->writestring(");");
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236 if (!hgs->FLinit.init)
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237 buf->writenl();
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238 }
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239
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240 Statement *CompileStatement::semantic(Scope *sc)
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241 {
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242 //printf("CompileStatement::semantic() %s\n", exp->toChars());
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243 exp = exp->semantic(sc);
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244 exp = resolveProperties(sc, exp);
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245 exp = exp->optimize(WANTvalue | WANTinterpret);
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246 if (exp->op != TOKstring)
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247 { error("argument to mixin must be a string, not (%s)", exp->toChars());
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248 return this;
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249 }
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250 StringExp *se = (StringExp *)exp;
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251 se = se->toUTF8(sc);
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252 Parser p(sc->module, (unsigned char *)se->string, se->len, 0);
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253 p.loc = loc;
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254 p.nextToken();
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255
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256 Statements *statements = new Statements();
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257 while (p.token.value != TOKeof)
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258 {
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259 Statement *s = p.parseStatement(PSsemi | PScurlyscope);
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260 statements->push(s);
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261 }
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262
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263 Statement *s = new CompoundStatement(loc, statements);
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264 return s->semantic(sc);
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265 }
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266
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267
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268 /******************************** DeclarationStatement ***************************/
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269
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270 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration)
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271 : ExpStatement(loc, new DeclarationExp(loc, declaration))
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272 {
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273 }
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274
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275 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp)
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276 : ExpStatement(loc, exp)
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277 {
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278 }
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279
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280 Statement *DeclarationStatement::syntaxCopy()
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281 {
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282 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy());
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283 return ds;
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284 }
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285
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286 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally)
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287 {
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288 //printf("DeclarationStatement::scopeCode()\n");
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289 //print();
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290
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291 *sentry = NULL;
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292 *sexception = NULL;
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293 *sfinally = NULL;
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294
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295 if (exp)
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296 {
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297 if (exp->op == TOKdeclaration)
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298 {
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299 DeclarationExp *de = (DeclarationExp *)(exp);
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300 VarDeclaration *v = de->declaration->isVarDeclaration();
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301 if (v)
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302 { Expression *e;
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303
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304 e = v->callAutoDtor();
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305 if (e)
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306 {
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307 //printf("dtor is: "); e->print();
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308 *sfinally = new ExpStatement(loc, e);
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309 }
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310 }
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311 }
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312 }
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313 }
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314
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315 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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316 {
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317 exp->toCBuffer(buf, hgs);
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318 }
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319
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320
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321 /******************************** CompoundStatement ***************************/
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322
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323 CompoundStatement::CompoundStatement(Loc loc, Statements *s)
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324 : Statement(loc)
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325 {
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326 statements = s;
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327 }
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328
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329 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2)
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330 : Statement(loc)
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331 {
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332 statements = new Statements();
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333 statements->reserve(2);
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334 statements->push(s1);
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335 statements->push(s2);
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336 }
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337
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338 Statement *CompoundStatement::syntaxCopy()
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339 {
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340 Statements *a = new Statements();
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341 a->setDim(statements->dim);
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342 for (size_t i = 0; i < statements->dim; i++)
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343 { Statement *s = (Statement *)statements->data[i];
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344 if (s)
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345 s = s->syntaxCopy();
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346 a->data[i] = s;
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347 }
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348 CompoundStatement *cs = new CompoundStatement(loc, a);
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349 return cs;
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350 }
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351
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352
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353 Statement *CompoundStatement::semantic(Scope *sc)
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354 { Statement *s;
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355
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356 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc);
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357
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358 for (size_t i = 0; i < statements->dim; )
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359 {
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360 s = (Statement *) statements->data[i];
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361 if (s)
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362 { Statements *a = s->flatten(sc);
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363
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364 if (a)
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365 {
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366 statements->remove(i);
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367 statements->insert(i, a);
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368 continue;
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369 }
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370 s = s->semantic(sc);
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371 statements->data[i] = s;
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372 if (s)
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373 {
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374 Statement *sentry;
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375 Statement *sexception;
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376 Statement *sfinally;
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377
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378 s->scopeCode(&sentry, &sexception, &sfinally);
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379 if (sentry)
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380 {
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381 sentry = sentry->semantic(sc);
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382 statements->data[i] = sentry;
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383 }
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384 if (sexception)
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385 {
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386 if (i + 1 == statements->dim && !sfinally)
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387 {
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388 #if 1
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389 sexception = sexception->semantic(sc);
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390 #else
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391 statements->push(sexception);
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392 if (sfinally)
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393 // Assume sexception does not throw
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394 statements->push(sfinally);
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395 #endif
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396 }
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397 else
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398 {
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399 /* Rewrite:
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400 * s; s1; s2;
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401 * As:
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402 * s;
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403 * try { s1; s2; }
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404 * catch (Object __o)
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405 * { sexception; throw __o; }
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406 */
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407 Statement *body;
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408 Statements *a = new Statements();
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409
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410 for (int j = i + 1; j < statements->dim; j++)
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411 {
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412 a->push(statements->data[j]);
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413 }
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414 body = new CompoundStatement(0, a);
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415 body = new ScopeStatement(0, body);
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416
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417 static int num;
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418 char name[3 + sizeof(num) * 3 + 1];
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419 sprintf(name, "__o%d", ++num);
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420 Identifier *id = Lexer::idPool(name);
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421
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422 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id));
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423 handler = new CompoundStatement(0, sexception, handler);
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424
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425 Array *catches = new Array();
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426 Catch *ctch = new Catch(0, NULL, id, handler);
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427 catches->push(ctch);
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428 s = new TryCatchStatement(0, body, catches);
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429
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430 if (sfinally)
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431 s = new TryFinallyStatement(0, s, sfinally);
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432 s = s->semantic(sc);
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433 statements->setDim(i + 1);
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434 statements->push(s);
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435 break;
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436 }
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437 }
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438 else if (sfinally)
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439 {
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440 if (0 && i + 1 == statements->dim)
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441 {
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442 statements->push(sfinally);
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443 }
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444 else
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445 {
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446 /* Rewrite:
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447 * s; s1; s2;
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448 * As:
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449 * s; try { s1; s2; } finally { sfinally; }
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450 */
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451 Statement *body;
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452 Statements *a = new Statements();
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453
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454 for (int j = i + 1; j < statements->dim; j++)
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455 {
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456 a->push(statements->data[j]);
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457 }
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458 body = new CompoundStatement(0, a);
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459 s = new TryFinallyStatement(0, body, sfinally);
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460 s = s->semantic(sc);
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461 statements->setDim(i + 1);
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462 statements->push(s);
|
|
|
463 break;
|
|
|
464 }
|
|
|
465 }
|
|
|
466 }
|
|
|
467 }
|
|
|
468 i++;
|
|
|
469 }
|
|
|
470 if (statements->dim == 1)
|
|
|
471 return s;
|
|
|
472 return this;
|
|
|
473 }
|
|
|
474
|
|
|
475 Statements *CompoundStatement::flatten(Scope *sc)
|
|
|
476 {
|
|
|
477 return statements;
|
|
|
478 }
|
|
|
479
|
|
|
480 ReturnStatement *CompoundStatement::isReturnStatement()
|
|
|
481 { int i;
|
|
|
482 ReturnStatement *rs = NULL;
|
|
|
483
|
|
|
484 for (i = 0; i < statements->dim; i++)
|
|
|
485 { Statement *s;
|
|
|
486
|
|
|
487 s = (Statement *) statements->data[i];
|
|
|
488 if (s)
|
|
|
489 {
|
|
|
490 rs = s->isReturnStatement();
|
|
|
491 if (rs)
|
|
|
492 break;
|
|
|
493 }
|
|
|
494 }
|
|
|
495 return rs;
|
|
|
496 }
|
|
|
497
|
|
|
498 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
499 { int i;
|
|
|
500
|
|
|
501 for (i = 0; i < statements->dim; i++)
|
|
|
502 { Statement *s;
|
|
|
503
|
|
|
504 s = (Statement *) statements->data[i];
|
|
|
505 if (s)
|
|
|
506 s->toCBuffer(buf, hgs);
|
|
|
507 }
|
|
|
508 }
|
|
|
509
|
|
|
510 int CompoundStatement::usesEH()
|
|
|
511 {
|
|
|
512 for (int i = 0; i < statements->dim; i++)
|
|
|
513 { Statement *s;
|
|
|
514
|
|
|
515 s = (Statement *) statements->data[i];
|
|
|
516 if (s && s->usesEH())
|
|
|
517 return TRUE;
|
|
|
518 }
|
|
|
519 return FALSE;
|
|
|
520 }
|
|
|
521
|
|
|
522 int CompoundStatement::fallOffEnd()
|
|
|
523 { int falloff = TRUE;
|
|
|
524
|
|
|
525 //printf("CompoundStatement::fallOffEnd()\n");
|
|
|
526 for (int i = 0; i < statements->dim; i++)
|
|
|
527 { Statement *s = (Statement *)statements->data[i];
|
|
|
528
|
|
|
529 if (!s)
|
|
|
530 continue;
|
|
|
531
|
|
|
532 if (!falloff && global.params.warnings && !s->comeFrom())
|
|
|
533 {
|
|
|
534 fprintf(stdmsg, "warning - ");
|
|
|
535 s->error("statement is not reachable");
|
|
|
536 }
|
|
|
537 falloff = s->fallOffEnd();
|
|
|
538 }
|
|
|
539 return falloff;
|
|
|
540 }
|
|
|
541
|
|
|
542 int CompoundStatement::comeFrom()
|
|
|
543 { int comefrom = FALSE;
|
|
|
544
|
|
|
545 //printf("CompoundStatement::comeFrom()\n");
|
|
|
546 for (int i = 0; i < statements->dim; i++)
|
|
|
547 { Statement *s = (Statement *)statements->data[i];
|
|
|
548
|
|
|
549 if (!s)
|
|
|
550 continue;
|
|
|
551
|
|
|
552 comefrom |= s->comeFrom();
|
|
|
553 }
|
|
|
554 return comefrom;
|
|
|
555 }
|
|
|
556
|
|
|
557
|
|
|
558 /**************************** UnrolledLoopStatement ***************************/
|
|
|
559
|
|
|
560 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s)
|
|
|
561 : Statement(loc)
|
|
|
562 {
|
|
|
563 statements = s;
|
|
|
564 }
|
|
|
565
|
|
|
566 Statement *UnrolledLoopStatement::syntaxCopy()
|
|
|
567 {
|
|
|
568 Statements *a = new Statements();
|
|
|
569 a->setDim(statements->dim);
|
|
|
570 for (size_t i = 0; i < statements->dim; i++)
|
|
|
571 { Statement *s = (Statement *)statements->data[i];
|
|
|
572 if (s)
|
|
|
573 s = s->syntaxCopy();
|
|
|
574 a->data[i] = s;
|
|
|
575 }
|
|
|
576 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a);
|
|
|
577 return cs;
|
|
|
578 }
|
|
|
579
|
|
|
580
|
|
|
581 Statement *UnrolledLoopStatement::semantic(Scope *sc)
|
|
|
582 {
|
|
|
583 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc);
|
|
|
584
|
|
|
585 sc->noctor++;
|
|
|
586 Scope *scd = sc->push();
|
|
|
587 scd->sbreak = this;
|
|
|
588 scd->scontinue = this;
|
|
|
589
|
|
|
590 for (size_t i = 0; i < statements->dim; i++)
|
|
|
591 {
|
|
|
592 Statement *s = (Statement *) statements->data[i];
|
|
|
593 if (s)
|
|
|
594 {
|
|
|
595 s = s->semantic(scd);
|
|
|
596 statements->data[i] = s;
|
|
|
597 }
|
|
|
598 }
|
|
|
599
|
|
|
600 scd->pop();
|
|
|
601 sc->noctor--;
|
|
|
602 return this;
|
|
|
603 }
|
|
|
604
|
|
|
605 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
606 {
|
|
|
607 buf->writestring("unrolled {");
|
|
|
608 buf->writenl();
|
|
|
609
|
|
|
610 for (size_t i = 0; i < statements->dim; i++)
|
|
|
611 { Statement *s;
|
|
|
612
|
|
|
613 s = (Statement *) statements->data[i];
|
|
|
614 if (s)
|
|
|
615 s->toCBuffer(buf, hgs);
|
|
|
616 }
|
|
|
617
|
|
|
618 buf->writeByte('}');
|
|
|
619 buf->writenl();
|
|
|
620 }
|
|
|
621
|
|
|
622 int UnrolledLoopStatement::hasBreak()
|
|
|
623 {
|
|
|
624 return TRUE;
|
|
|
625 }
|
|
|
626
|
|
|
627 int UnrolledLoopStatement::hasContinue()
|
|
|
628 {
|
|
|
629 return TRUE;
|
|
|
630 }
|
|
|
631
|
|
|
632 int UnrolledLoopStatement::usesEH()
|
|
|
633 {
|
|
|
634 for (size_t i = 0; i < statements->dim; i++)
|
|
|
635 { Statement *s;
|
|
|
636
|
|
|
637 s = (Statement *) statements->data[i];
|
|
|
638 if (s && s->usesEH())
|
|
|
639 return TRUE;
|
|
|
640 }
|
|
|
641 return FALSE;
|
|
|
642 }
|
|
|
643
|
|
|
644 int UnrolledLoopStatement::fallOffEnd()
|
|
|
645 { int falloff = TRUE;
|
|
|
646
|
|
|
647 //printf("UnrolledLoopStatement::fallOffEnd()\n");
|
|
|
648 for (size_t i = 0; i < statements->dim; i++)
|
|
|
649 { Statement *s = (Statement *)statements->data[i];
|
|
|
650
|
|
|
651 if (!s)
|
|
|
652 continue;
|
|
|
653
|
|
|
654 if (!falloff && global.params.warnings && !s->comeFrom())
|
|
|
655 {
|
|
|
656 fprintf(stdmsg, "warning - ");
|
|
|
657 s->error("statement is not reachable");
|
|
|
658 }
|
|
|
659 falloff = s->fallOffEnd();
|
|
|
660 }
|
|
|
661 return falloff;
|
|
|
662 }
|
|
|
663
|
|
|
664 int UnrolledLoopStatement::comeFrom()
|
|
|
665 { int comefrom = FALSE;
|
|
|
666
|
|
|
667 //printf("UnrolledLoopStatement::comeFrom()\n");
|
|
|
668 for (size_t i = 0; i < statements->dim; i++)
|
|
|
669 { Statement *s = (Statement *)statements->data[i];
|
|
|
670
|
|
|
671 if (!s)
|
|
|
672 continue;
|
|
|
673
|
|
|
674 comefrom |= s->comeFrom();
|
|
|
675 }
|
|
|
676 return comefrom;
|
|
|
677 }
|
|
|
678
|
|
|
679
|
|
|
680 /******************************** ScopeStatement ***************************/
|
|
|
681
|
|
|
682 ScopeStatement::ScopeStatement(Loc loc, Statement *s)
|
|
|
683 : Statement(loc)
|
|
|
684 {
|
|
|
685 this->statement = s;
|
|
|
686 }
|
|
|
687
|
|
|
688 Statement *ScopeStatement::syntaxCopy()
|
|
|
689 {
|
|
|
690 Statement *s;
|
|
|
691
|
|
|
692 s = statement ? statement->syntaxCopy() : NULL;
|
|
|
693 s = new ScopeStatement(loc, s);
|
|
|
694 return s;
|
|
|
695 }
|
|
|
696
|
|
|
697
|
|
|
698 Statement *ScopeStatement::semantic(Scope *sc)
|
|
|
699 { ScopeDsymbol *sym;
|
|
|
700
|
|
|
701 //printf("ScopeStatement::semantic(sc = %p)\n", sc);
|
|
|
702 if (statement)
|
|
|
703 { Statements *a;
|
|
|
704
|
|
|
705 sym = new ScopeDsymbol();
|
|
|
706 sym->parent = sc->scopesym;
|
|
|
707 sc = sc->push(sym);
|
|
|
708
|
|
|
709 a = statement->flatten(sc);
|
|
|
710 if (a)
|
|
|
711 {
|
|
|
712 statement = new CompoundStatement(loc, a);
|
|
|
713 }
|
|
|
714
|
|
|
715 statement = statement->semantic(sc);
|
|
|
716 if (statement)
|
|
|
717 {
|
|
|
718 Statement *sentry;
|
|
|
719 Statement *sexception;
|
|
|
720 Statement *sfinally;
|
|
|
721
|
|
|
722 statement->scopeCode(&sentry, &sexception, &sfinally);
|
|
|
723 if (sfinally)
|
|
|
724 {
|
|
|
725 //printf("adding sfinally\n");
|
|
|
726 statement = new CompoundStatement(loc, statement, sfinally);
|
|
|
727 }
|
|
|
728 }
|
|
|
729
|
|
|
730 sc->pop();
|
|
|
731 }
|
|
|
732 return this;
|
|
|
733 }
|
|
|
734
|
|
|
735 int ScopeStatement::hasBreak()
|
|
|
736 {
|
|
|
737 //printf("ScopeStatement::hasBreak() %s\n", toChars());
|
|
|
738 return statement ? statement->hasBreak() : FALSE;
|
|
|
739 }
|
|
|
740
|
|
|
741 int ScopeStatement::hasContinue()
|
|
|
742 {
|
|
|
743 return statement ? statement->hasContinue() : FALSE;
|
|
|
744 }
|
|
|
745
|
|
|
746 int ScopeStatement::usesEH()
|
|
|
747 {
|
|
|
748 return statement ? statement->usesEH() : FALSE;
|
|
|
749 }
|
|
|
750
|
|
|
751 int ScopeStatement::fallOffEnd()
|
|
|
752 {
|
|
|
753 return statement ? statement->fallOffEnd() : TRUE;
|
|
|
754 }
|
|
|
755
|
|
|
756 int ScopeStatement::comeFrom()
|
|
|
757 {
|
|
|
758 //printf("ScopeStatement::comeFrom()\n");
|
|
|
759 return statement ? statement->comeFrom() : FALSE;
|
|
|
760 }
|
|
|
761
|
|
|
762 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
763 {
|
|
|
764 buf->writeByte('{');
|
|
|
765 buf->writenl();
|
|
|
766
|
|
|
767 if (statement)
|
|
|
768 statement->toCBuffer(buf, hgs);
|
|
|
769
|
|
|
770 buf->writeByte('}');
|
|
|
771 buf->writenl();
|
|
|
772 }
|
|
|
773
|
|
|
774 /******************************** WhileStatement ***************************/
|
|
|
775
|
|
|
776 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b)
|
|
|
777 : Statement(loc)
|
|
|
778 {
|
|
|
779 condition = c;
|
|
|
780 body = b;
|
|
|
781 }
|
|
|
782
|
|
|
783 Statement *WhileStatement::syntaxCopy()
|
|
|
784 {
|
|
|
785 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL);
|
|
|
786 return s;
|
|
|
787 }
|
|
|
788
|
|
|
789
|
|
|
790 Statement *WhileStatement::semantic(Scope *sc)
|
|
|
791 {
|
|
|
792 #if 0
|
|
|
793 if (condition->op == TOKmatch)
|
|
|
794 {
|
|
|
795 /* Rewrite while (condition) body as:
|
|
|
796 * if (condition)
|
|
|
797 * do
|
|
|
798 * body
|
|
|
799 * while ((_match = _match.opNext), _match);
|
|
|
800 */
|
|
|
801
|
|
|
802 Expression *ew = new IdentifierExp(0, Id::_match);
|
|
|
803 ew = new DotIdExp(0, ew, Id::next);
|
|
|
804 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew);
|
|
|
805 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0));
|
|
|
806 Expression *ev = new IdentifierExp(0, Id::_match);
|
|
|
807 //ev = new CastExp(0, ev, Type::tvoidptr);
|
|
|
808 ew = new CommaExp(0, ew, ev);
|
|
|
809 Statement *sw = new DoStatement(loc, body, ew);
|
|
|
810 Statement *si = new IfStatement(loc, condition, sw, NULL);
|
|
|
811 return si->semantic(sc);
|
|
|
812 }
|
|
|
813 #endif
|
|
|
814
|
|
|
815 condition = condition->semantic(sc);
|
|
|
816 condition = resolveProperties(sc, condition);
|
|
|
817 condition = condition->optimize(WANTvalue);
|
|
|
818 condition = condition->checkToBoolean();
|
|
|
819
|
|
|
820 sc->noctor++;
|
|
|
821
|
|
|
822 Scope *scd = sc->push();
|
|
|
823 scd->sbreak = this;
|
|
|
824 scd->scontinue = this;
|
|
|
825 if (body)
|
|
|
826 body = body->semantic(scd);
|
|
|
827 scd->pop();
|
|
|
828
|
|
|
829 sc->noctor--;
|
|
|
830
|
|
|
831 return this;
|
|
|
832 }
|
|
|
833
|
|
|
834 int WhileStatement::hasBreak()
|
|
|
835 {
|
|
|
836 return TRUE;
|
|
|
837 }
|
|
|
838
|
|
|
839 int WhileStatement::hasContinue()
|
|
|
840 {
|
|
|
841 return TRUE;
|
|
|
842 }
|
|
|
843
|
|
|
844 int WhileStatement::usesEH()
|
|
|
845 {
|
|
|
846 return body ? body->usesEH() : 0;
|
|
|
847 }
|
|
|
848
|
|
|
849 int WhileStatement::fallOffEnd()
|
|
|
850 {
|
|
|
851 if (body)
|
|
|
852 body->fallOffEnd();
|
|
|
853 return TRUE;
|
|
|
854 }
|
|
|
855
|
|
|
856 int WhileStatement::comeFrom()
|
|
|
857 {
|
|
|
858 if (body)
|
|
|
859 return body->comeFrom();
|
|
|
860 return FALSE;
|
|
|
861 }
|
|
|
862
|
|
|
863 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
864 {
|
|
|
865 buf->writestring("while (");
|
|
|
866 condition->toCBuffer(buf, hgs);
|
|
|
867 buf->writebyte(')');
|
|
|
868 buf->writenl();
|
|
|
869 if (body)
|
|
|
870 body->toCBuffer(buf, hgs);
|
|
|
871 }
|
|
|
872
|
|
|
873 /******************************** DoStatement ***************************/
|
|
|
874
|
|
|
875 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c)
|
|
|
876 : Statement(loc)
|
|
|
877 {
|
|
|
878 body = b;
|
|
|
879 condition = c;
|
|
|
880 }
|
|
|
881
|
|
|
882 Statement *DoStatement::syntaxCopy()
|
|
|
883 {
|
|
|
884 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy());
|
|
|
885 return s;
|
|
|
886 }
|
|
|
887
|
|
|
888
|
|
|
889 Statement *DoStatement::semantic(Scope *sc)
|
|
|
890 {
|
|
|
891 sc->noctor++;
|
|
|
892 if (body)
|
|
|
893 body = body->semanticScope(sc, this, this);
|
|
|
894 sc->noctor--;
|
|
|
895 condition = condition->semantic(sc);
|
|
|
896 condition = resolveProperties(sc, condition);
|
|
|
897
|
|
|
898 condition = condition->checkToBoolean();
|
|
|
899
|
|
|
900 return this;
|
|
|
901 }
|
|
|
902
|
|
|
903 int DoStatement::hasBreak()
|
|
|
904 {
|
|
|
905 return TRUE;
|
|
|
906 }
|
|
|
907
|
|
|
908 int DoStatement::hasContinue()
|
|
|
909 {
|
|
|
910 return TRUE;
|
|
|
911 }
|
|
|
912
|
|
|
913 int DoStatement::usesEH()
|
|
|
914 {
|
|
|
915 return body ? body->usesEH() : 0;
|
|
|
916 }
|
|
|
917
|
|
|
918 int DoStatement::fallOffEnd()
|
|
|
919 {
|
|
|
920 if (body)
|
|
|
921 body->fallOffEnd();
|
|
|
922 return TRUE;
|
|
|
923 }
|
|
|
924
|
|
|
925 int DoStatement::comeFrom()
|
|
|
926 {
|
|
|
927 if (body)
|
|
|
928 return body->comeFrom();
|
|
|
929 return FALSE;
|
|
|
930 }
|
|
|
931
|
|
|
932 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
933 {
|
|
|
934 buf->writestring("do");
|
|
|
935 buf->writenl();
|
|
|
936 if (body)
|
|
|
937 body->toCBuffer(buf, hgs);
|
|
|
938 buf->writestring("while (");
|
|
|
939 condition->toCBuffer(buf, hgs);
|
|
|
940 buf->writebyte(')');
|
|
|
941 }
|
|
|
942
|
|
|
943 /******************************** ForStatement ***************************/
|
|
|
944
|
|
|
945 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body)
|
|
|
946 : Statement(loc)
|
|
|
947 {
|
|
|
948 this->init = init;
|
|
|
949 this->condition = condition;
|
|
|
950 this->increment = increment;
|
|
|
951 this->body = body;
|
|
|
952 }
|
|
|
953
|
|
|
954 Statement *ForStatement::syntaxCopy()
|
|
|
955 {
|
|
|
956 Statement *i = NULL;
|
|
|
957 if (init)
|
|
|
958 i = init->syntaxCopy();
|
|
|
959 Expression *c = NULL;
|
|
|
960 if (condition)
|
|
|
961 c = condition->syntaxCopy();
|
|
|
962 Expression *inc = NULL;
|
|
|
963 if (increment)
|
|
|
964 inc = increment->syntaxCopy();
|
|
|
965 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy());
|
|
|
966 return s;
|
|
|
967 }
|
|
|
968
|
|
|
969 Statement *ForStatement::semantic(Scope *sc)
|
|
|
970 {
|
|
|
971 ScopeDsymbol *sym = new ScopeDsymbol();
|
|
|
972 sym->parent = sc->scopesym;
|
|
|
973 sc = sc->push(sym);
|
|
|
974 if (init)
|
|
|
975 init = init->semantic(sc);
|
|
|
976 if (!condition)
|
|
|
977 // Use a default value
|
|
|
978 condition = new IntegerExp(loc, 1, Type::tboolean);
|
|
|
979 sc->noctor++;
|
|
|
980 condition = condition->semantic(sc);
|
|
|
981 condition = resolveProperties(sc, condition);
|
|
|
982 condition = condition->checkToBoolean();
|
|
|
983 if (increment)
|
|
|
984 increment = increment->semantic(sc);
|
|
|
985
|
|
|
986 sc->sbreak = this;
|
|
|
987 sc->scontinue = this;
|
|
|
988 body = body->semantic(sc);
|
|
|
989 sc->noctor--;
|
|
|
990
|
|
|
991 sc->pop();
|
|
|
992 return this;
|
|
|
993 }
|
|
|
994
|
|
|
995 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally)
|
|
|
996 {
|
|
|
997 //printf("ForStatement::scopeCode()\n");
|
|
|
998 //print();
|
|
|
999 if (init)
|
|
|
1000 init->scopeCode(sentry, sexception, sfinally);
|
|
|
1001 else
|
|
|
1002 Statement::scopeCode(sentry, sexception, sfinally);
|
|
|
1003 }
|
|
|
1004
|
|
|
1005 int ForStatement::hasBreak()
|
|
|
1006 {
|
|
|
1007 //printf("ForStatement::hasBreak()\n");
|
|
|
1008 return TRUE;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 int ForStatement::hasContinue()
|
|
|
1012 {
|
|
|
1013 return TRUE;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 int ForStatement::usesEH()
|
|
|
1017 {
|
|
|
1018 return (init && init->usesEH()) || body->usesEH();
|
|
|
1019 }
|
|
|
1020
|
|
|
1021 int ForStatement::fallOffEnd()
|
|
|
1022 {
|
|
|
1023 if (body)
|
|
|
1024 body->fallOffEnd();
|
|
|
1025 return TRUE;
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 int ForStatement::comeFrom()
|
|
|
1029 {
|
|
|
1030 //printf("ForStatement::comeFrom()\n");
|
|
|
1031 if (body)
|
|
|
1032 { int result = body->comeFrom();
|
|
|
1033 //printf("result = %d\n", result);
|
|
|
1034 return result;
|
|
|
1035 }
|
|
|
1036 return FALSE;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
1040 {
|
|
|
1041 buf->writestring("for (");
|
|
|
1042 if (init)
|
|
|
1043 {
|
|
|
1044 hgs->FLinit.init++;
|
|
|
1045 hgs->FLinit.decl = 0;
|
|
|
1046 init->toCBuffer(buf, hgs);
|
|
|
1047 if (hgs->FLinit.decl > 0)
|
|
|
1048 buf->writebyte(';');
|
|
|
1049 hgs->FLinit.decl = 0;
|
|
|
1050 hgs->FLinit.init--;
|
|
|
1051 }
|
|
|
1052 else
|
|
|
1053 buf->writebyte(';');
|
|
|
1054 if (condition)
|
|
|
1055 { buf->writebyte(' ');
|
|
|
1056 condition->toCBuffer(buf, hgs);
|
|
|
1057 }
|
|
|
1058 buf->writebyte(';');
|
|
|
1059 if (increment)
|
|
|
1060 { buf->writebyte(' ');
|
|
|
1061 increment->toCBuffer(buf, hgs);
|
|
|
1062 }
|
|
|
1063 buf->writebyte(')');
|
|
|
1064 buf->writenl();
|
|
|
1065 buf->writebyte('{');
|
|
|
1066 buf->writenl();
|
|
|
1067 body->toCBuffer(buf, hgs);
|
|
|
1068 buf->writebyte('}');
|
|
|
1069 buf->writenl();
|
|
|
1070 }
|
|
|
1071
|
|
|
1072 /******************************** ForeachStatement ***************************/
|
|
|
1073
|
|
|
1074 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments,
|
|
|
1075 Expression *aggr, Statement *body)
|
|
|
1076 : Statement(loc)
|
|
|
1077 {
|
|
|
1078 this->op = op;
|
|
|
1079 this->arguments = arguments;
|
|
|
1080 this->aggr = aggr;
|
|
|
1081 this->body = body;
|
|
|
1082
|
|
|
1083 this->key = NULL;
|
|
|
1084 this->value = NULL;
|
|
|
1085
|
|
|
1086 this->func = NULL;
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 Statement *ForeachStatement::syntaxCopy()
|
|
|
1090 {
|
|
|
1091 Arguments *args = Argument::arraySyntaxCopy(arguments);
|
|
|
1092 Expression *exp = aggr->syntaxCopy();
|
|
|
1093 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, body->syntaxCopy());
|
|
|
1094 return s;
|
|
|
1095 }
|
|
|
1096
|
|
|
1097 Statement *ForeachStatement::semantic(Scope *sc)
|
|
|
1098 {
|
|
|
1099 //printf("ForeachStatement::semantic() %p\n", this);
|
|
|
1100 ScopeDsymbol *sym;
|
|
|
1101 Statement *s = this;
|
|
|
1102 int dim = arguments->dim;
|
|
|
1103 int i;
|
|
|
1104 TypeAArray *taa = NULL;
|
|
|
1105
|
|
|
1106 Type *tn = NULL;
|
|
|
1107 Type *tnv = NULL;
|
|
|
1108
|
|
|
1109 func = sc->func;
|
|
|
1110 if (func->fes)
|
|
|
1111 func = func->fes->func;
|
|
|
1112
|
|
|
1113 aggr = aggr->semantic(sc);
|
|
|
1114 aggr = resolveProperties(sc, aggr);
|
|
|
1115 if (!aggr->type)
|
|
|
1116 {
|
|
|
1117 error("invalid foreach aggregate %s", aggr->toChars());
|
|
|
1118 return this;
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 inferApplyArgTypes(op, arguments, aggr);
|
|
|
1122
|
|
|
1123 /* Check for inference errors
|
|
|
1124 */
|
|
|
1125 if (dim != arguments->dim)
|
|
|
1126 {
|
|
|
1127 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim);
|
|
|
1128 error("cannot uniquely infer foreach argument types");
|
|
|
1129 return this;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 Type *tab = aggr->type->toBasetype();
|
|
|
1133
|
|
|
1134 if (tab->ty == Ttuple) // don't generate new scope for tuple loops
|
|
|
1135 {
|
|
|
1136 if (dim < 1 || dim > 2)
|
|
|
1137 {
|
|
|
1138 error("only one (value) or two (key,value) arguments for tuple foreach");
|
|
|
1139 return s;
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 TypeTuple *tuple = (TypeTuple *)tab;
|
|
|
1143 Statements *statements = new Statements();
|
|
|
1144 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars());
|
|
|
1145 size_t n;
|
|
|
1146 TupleExp *te = NULL;
|
|
|
1147 if (aggr->op == TOKtuple) // expression tuple
|
|
|
1148 { te = (TupleExp *)aggr;
|
|
|
1149 n = te->exps->dim;
|
|
|
1150 }
|
|
|
1151 else if (aggr->op == TOKtype) // type tuple
|
|
|
1152 {
|
|
|
1153 n = Argument::dim(tuple->arguments);
|
|
|
1154 }
|
|
|
1155 else
|
|
|
1156 assert(0);
|
|
|
1157 for (size_t j = 0; j < n; j++)
|
|
|
1158 { size_t k = (op == TOKforeach) ? j : n - 1 - j;
|
|
|
1159 Expression *e;
|
|
|
1160 Type *t;
|
|
|
1161 if (te)
|
|
|
1162 e = (Expression *)te->exps->data[k];
|
|
|
1163 else
|
|
|
1164 t = Argument::getNth(tuple->arguments, k)->type;
|
|
|
1165 Argument *arg = (Argument *)arguments->data[0];
|
|
|
1166 Statements *st = new Statements();
|
|
|
1167
|
|
|
1168 if (dim == 2)
|
|
|
1169 { // Declare key
|
|
|
1170 if (arg->storageClass & (STCout | STCref | STClazy))
|
|
|
1171 error("no storage class for key %s", arg->ident->toChars());
|
|
|
1172 TY keyty = arg->type->ty;
|
|
|
1173 if ((keyty != Tint32 && keyty != Tuns32) ||
|
|
|
1174 (global.params.is64bit &&
|
|
|
1175 keyty != Tint64 && keyty != Tuns64)
|
|
|
1176 )
|
|
|
1177 {
|
|
|
1178 error("foreach: key type must be int or uint, not %s", arg->type->toChars());
|
|
|
1179 }
|
|
|
1180 Initializer *ie = new ExpInitializer(0, new IntegerExp(k));
|
|
|
1181 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie);
|
|
|
1182 var->storage_class |= STCconst;
|
|
|
1183 DeclarationExp *de = new DeclarationExp(loc, var);
|
|
|
1184 st->push(new ExpStatement(loc, de));
|
|
|
1185 arg = (Argument *)arguments->data[1]; // value
|
|
|
1186 }
|
|
|
1187 // Declare value
|
|
|
1188 if (arg->storageClass & (STCout | STCref | STClazy))
|
|
|
1189 error("no storage class for value %s", arg->ident->toChars());
|
|
|
1190 Dsymbol *var;
|
|
|
1191 if (te)
|
|
|
1192 {
|
|
|
1193 if (e->type->toBasetype()->ty == Tfunction &&
|
|
|
1194 e->op == TOKvar)
|
|
|
1195 { VarExp *ve = (VarExp *)e;
|
|
|
1196 var = new AliasDeclaration(loc, arg->ident, ve->var);
|
|
|
1197 }
|
|
|
1198 else
|
|
|
1199 {
|
|
|
1200 arg->type = e->type;
|
|
|
1201 Initializer *ie = new ExpInitializer(0, e);
|
|
|
1202 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie);
|
|
|
1203 if (e->isConst())
|
|
|
1204 v->storage_class |= STCconst;
|
|
|
1205 #if V2
|
|
|
1206 else
|
|
|
1207 v->storage_class |= STCfinal;
|
|
|
1208 #endif
|
|
|
1209 var = v;
|
|
|
1210 }
|
|
|
1211 }
|
|
|
1212 else
|
|
|
1213 {
|
|
|
1214 var = new AliasDeclaration(loc, arg->ident, t);
|
|
|
1215 }
|
|
|
1216 DeclarationExp *de = new DeclarationExp(loc, var);
|
|
|
1217 st->push(new ExpStatement(loc, de));
|
|
|
1218
|
|
|
1219 st->push(body->syntaxCopy());
|
|
|
1220 s = new CompoundStatement(loc, st);
|
|
|
1221 s = new ScopeStatement(loc, s);
|
|
|
1222 statements->push(s);
|
|
|
1223 }
|
|
|
1224
|
|
|
1225 s = new UnrolledLoopStatement(loc, statements);
|
|
|
1226 s = s->semantic(sc);
|
|
|
1227 return s;
|
|
|
1228 }
|
|
|
1229
|
|
|
1230 for (i = 0; i < dim; i++)
|
|
|
1231 { Argument *arg = (Argument *)arguments->data[i];
|
|
|
1232 if (!arg->type)
|
|
|
1233 {
|
|
|
1234 error("cannot infer type for %s", arg->ident->toChars());
|
|
|
1235 return this;
|
|
|
1236 }
|
|
|
1237 }
|
|
|
1238
|
|
|
1239 sym = new ScopeDsymbol();
|
|
|
1240 sym->parent = sc->scopesym;
|
|
|
1241 sc = sc->push(sym);
|
|
|
1242
|
|
|
1243 sc->noctor++;
|
|
|
1244
|
|
|
1245 switch (tab->ty)
|
|
|
1246 {
|
|
|
1247 case Tarray:
|
|
|
1248 case Tsarray:
|
|
|
1249 if (dim < 1 || dim > 2)
|
|
|
1250 {
|
|
|
1251 error("only one or two arguments for array foreach");
|
|
|
1252 break;
|
|
|
1253 }
|
|
|
1254
|
|
|
1255 /* Look for special case of parsing char types out of char type
|
|
|
1256 * array.
|
|
|
1257 */
|
|
|
1258 tn = tab->next->toBasetype();
|
|
|
1259 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar)
|
|
|
1260 { Argument *arg;
|
|
|
1261
|
|
|
1262 i = (dim == 1) ? 0 : 1; // index of value
|
|
|
1263 arg = (Argument *)arguments->data[i];
|
|
|
1264 arg->type = arg->type->semantic(loc, sc);
|
|
|
1265 tnv = arg->type->toBasetype();
|
|
|
1266 if (tnv->ty != tn->ty &&
|
|
|
1267 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar))
|
|
|
1268 {
|
|
|
1269 if (arg->storageClass & STCref)
|
|
|
1270 error("foreach: value of UTF conversion cannot be ref");
|
|
|
1271 if (dim == 2)
|
|
|
1272 { arg = (Argument *)arguments->data[0];
|
|
|
1273 if (arg->storageClass & STCref)
|
|
|
1274 error("foreach: key cannot be ref");
|
|
|
1275 }
|
|
|
1276 goto Lapply;
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279
|
|
|
1280 for (i = 0; i < dim; i++)
|
|
|
1281 { // Declare args
|
|
|
1282 Argument *arg = (Argument *)arguments->data[i];
|
|
|
1283 VarDeclaration *var;
|
|
|
1284
|
|
|
1285 var = new VarDeclaration(loc, arg->type, arg->ident, NULL);
|
|
|
1286 var->storage_class |= STCforeach;
|
|
|
1287 var->storage_class |= arg->storageClass & (STCin | STCout | STCref);
|
|
|
1288 #if 1
|
|
|
1289 DeclarationExp *de = new DeclarationExp(loc, var);
|
|
|
1290 de->semantic(sc);
|
|
|
1291 #else
|
|
|
1292 var->semantic(sc);
|
|
|
1293 if (!sc->insert(var))
|
|
|
1294 error("%s already defined", var->ident->toChars());
|
|
|
1295 #endif
|
|
|
1296 if (dim == 2 && i == 0)
|
|
|
1297 key = var;
|
|
|
1298 else
|
|
|
1299 value = var;
|
|
|
1300 }
|
|
|
1301
|
|
|
1302 sc->sbreak = this;
|
|
|
1303 sc->scontinue = this;
|
|
|
1304 body = body->semantic(sc);
|
|
|
1305
|
|
|
1306 if (!value->type->equals(tab->next))
|
|
|
1307 {
|
|
|
1308 if (aggr->op == TOKstring)
|
|
|
1309 aggr = aggr->implicitCastTo(sc, value->type->arrayOf());
|
|
|
1310 else
|
|
|
1311 error("foreach: %s is not an array of %s", tab->toChars(), value->type->toChars());
|
|
|
1312 }
|
|
|
1313
|
|
|
1314 if (value->storage_class & STCout && value->type->toBasetype()->ty == Tbit)
|
|
|
1315 error("foreach: value cannot be out and type bit");
|
|
|
1316
|
|
|
1317 if (key &&
|
|
|
1318 ((key->type->ty != Tint32 && key->type->ty != Tuns32) ||
|
|
|
1319 (global.params.is64bit &&
|
|
|
1320 key->type->ty != Tint64 && key->type->ty != Tuns64)
|
|
|
1321 )
|
|
|
1322 )
|
|
|
1323 {
|
|
|
1324 error("foreach: key type must be int or uint, not %s", key->type->toChars());
|
|
|
1325 }
|
|
|
1326
|
|
|
1327 if (key && key->storage_class & (STCout | STCref))
|
|
|
1328 error("foreach: key cannot be out or ref");
|
|
|
1329 break;
|
|
|
1330
|
|
|
1331 case Taarray:
|
|
|
1332 taa = (TypeAArray *)tab;
|
|
|
1333 if (dim < 1 || dim > 2)
|
|
|
1334 {
|
|
|
1335 error("only one or two arguments for associative array foreach");
|
|
|
1336 break;
|
|
|
1337 }
|
|
|
1338 if (op == TOKforeach_reverse)
|
|
|
1339 {
|
|
|
1340 error("no reverse iteration on associative arrays");
|
|
|
1341 }
|
|
|
1342 goto Lapply;
|
|
|
1343
|
|
|
1344 case Tclass:
|
|
|
1345 case Tstruct:
|
|
|
1346 case Tdelegate:
|
|
|
1347 Lapply:
|
|
|
1348 { FuncDeclaration *fdapply;
|
|
|
1349 Arguments *args;
|
|
|
1350 Expression *ec;
|
|
|
1351 Expression *e;
|
|
|
1352 FuncLiteralDeclaration *fld;
|
|
|
1353 Argument *a;
|
|
|
1354 Type *t;
|
|
|
1355 Expression *flde;
|
|
|
1356 Identifier *id;
|
|
|
1357 Type *tret;
|
|
|
1358
|
|
|
1359 tret = func->type->next;
|
|
|
1360
|
|
|
1361 // Need a variable to hold value from any return statements in body.
|
|
|
1362 if (!sc->func->vresult && tret && tret != Type::tvoid)
|
|
|
1363 { VarDeclaration *v;
|
|
|
1364
|
|
|
1365 v = new VarDeclaration(loc, tret, Id::result, NULL);
|
|
|
1366 v->noauto = 1;
|
|
|
1367 v->semantic(sc);
|
|
|
1368 if (!sc->insert(v))
|
|
|
1369 assert(0);
|
|
|
1370 v->parent = sc->func;
|
|
|
1371 sc->func->vresult = v;
|
|
|
1372 }
|
|
|
1373
|
|
|
1374 /* Turn body into the function literal:
|
|
|
1375 * int delegate(ref T arg) { body }
|
|
|
1376 */
|
|
|
1377 args = new Arguments();
|
|
|
1378 for (i = 0; i < dim; i++)
|
|
|
1379 { Argument *arg = (Argument *)arguments->data[i];
|
|
|
1380
|
|
|
1381 arg->type = arg->type->semantic(loc, sc);
|
|
|
1382 if (arg->storageClass & STCref)
|
|
|
1383 id = arg->ident;
|
|
|
1384 else
|
|
|
1385 { // Make a copy of the ref argument so it isn't
|
|
|
1386 // a reference.
|
|
|
1387 VarDeclaration *v;
|
|
|
1388 Initializer *ie;
|
|
|
1389 char applyArg[10 + sizeof(i)*3 + 1];
|
|
|
1390
|
|
|
1391 sprintf(applyArg, "__applyArg%d", i);
|
|
|
1392 id = Lexer::idPool(applyArg);
|
|
|
1393
|
|
|
1394 ie = new ExpInitializer(0, new IdentifierExp(0, id));
|
|
|
1395 v = new VarDeclaration(0, arg->type, arg->ident, ie);
|
|
|
1396 s = new DeclarationStatement(0, v);
|
|
|
1397 body = new CompoundStatement(loc, s, body);
|
|
|
1398 }
|
|
|
1399 a = new Argument(STCref, arg->type, id, NULL);
|
|
|
1400 args->push(a);
|
|
|
1401 }
|
|
|
1402 t = new TypeFunction(args, Type::tint32, 0, LINKd);
|
|
|
1403 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this);
|
|
|
1404 fld->fbody = body;
|
|
|
1405 flde = new FuncExp(loc, fld);
|
|
|
1406 flde = flde->semantic(sc);
|
|
|
1407
|
|
|
1408 // Resolve any forward referenced goto's
|
|
|
1409 for (int i = 0; i < gotos.dim; i++)
|
|
|
1410 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i];
|
|
|
1411 GotoStatement *gs = (GotoStatement *)cs->statements->data[0];
|
|
|
1412
|
|
|
1413 if (!gs->label->statement)
|
|
|
1414 { // 'Promote' it to this scope, and replace with a return
|
|
|
1415 cases.push(gs);
|
|
|
1416 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1));
|
|
|
1417 cs->statements->data[0] = (void *)s;
|
|
|
1418 }
|
|
|
1419 }
|
|
|
1420
|
|
|
1421 if (tab->ty == Taarray)
|
|
|
1422 {
|
|
|
1423 // Check types
|
|
|
1424 Argument *arg = (Argument *)arguments->data[0];
|
|
|
1425 if (dim == 2)
|
|
|
1426 {
|
|
|
1427 if (arg->storageClass & STCref)
|
|
|
1428 error("foreach: index cannot be ref");
|
|
|
1429 if (!arg->type->equals(taa->index))
|
|
|
1430 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars());
|
|
|
1431 arg = (Argument *)arguments->data[1];
|
|
|
1432 }
|
|
|
1433 if (!arg->type->equals(taa->next))
|
|
|
1434 error("foreach: value must be type %s, not %s", taa->next->toChars(), arg->type->toChars());
|
|
|
1435
|
|
|
1436 /* Call:
|
|
|
1437 * _aaApply(aggr, keysize, flde)
|
|
|
1438 */
|
|
|
1439 if (dim == 2)
|
|
|
1440 fdapply = FuncDeclaration::genCfunc(Type::tindex, "_aaApply2");
|
|
|
1441 else
|
|
|
1442 fdapply = FuncDeclaration::genCfunc(Type::tindex, "_aaApply");
|
|
|
1443 ec = new VarExp(0, fdapply);
|
|
|
1444 Expressions *exps = new Expressions();
|
|
|
1445 exps->push(aggr);
|
|
|
1446 size_t keysize = taa->key->size();
|
|
|
1447 keysize = (keysize + 3) & ~3;
|
|
|
1448 exps->push(new IntegerExp(0, keysize, Type::tint32));
|
|
|
1449 exps->push(flde);
|
|
|
1450 e = new CallExp(loc, ec, exps);
|
|
|
1451 e->type = Type::tindex; // don't run semantic() on e
|
|
|
1452 }
|
|
|
1453 else if (tab->ty == Tarray || tab->ty == Tsarray)
|
|
|
1454 {
|
|
|
1455 /* Call:
|
|
|
1456 * _aApply(aggr, flde)
|
|
|
1457 */
|
|
|
1458 static char fntab[9][3] =
|
|
|
1459 { "cc","cw","cd",
|
|
|
1460 "wc","cc","wd",
|
|
|
1461 "dc","dw","dd"
|
|
|
1462 };
|
|
|
1463 char fdname[7+1+2+ sizeof(dim)*3 + 1];
|
|
|
1464 int flag;
|
|
|
1465
|
|
|
1466 switch (tn->ty)
|
|
|
1467 {
|
|
|
1468 case Tchar: flag = 0; break;
|
|
|
1469 case Twchar: flag = 3; break;
|
|
|
1470 case Tdchar: flag = 6; break;
|
|
|
1471 default: assert(0);
|
|
|
1472 }
|
|
|
1473 switch (tnv->ty)
|
|
|
1474 {
|
|
|
1475 case Tchar: flag += 0; break;
|
|
|
1476 case Twchar: flag += 1; break;
|
|
|
1477 case Tdchar: flag += 2; break;
|
|
|
1478 default: assert(0);
|
|
|
1479 }
|
|
|
1480 const char *r = (op == TOKforeach_reverse) ? "R" : "";
|
|
|
1481 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim);
|
|
|
1482 assert(j < sizeof(fdname));
|
|
|
1483 fdapply = FuncDeclaration::genCfunc(Type::tindex, fdname);
|
|
|
1484
|
|
|
1485 ec = new VarExp(0, fdapply);
|
|
|
1486 Expressions *exps = new Expressions();
|
|
|
1487 if (tab->ty == Tsarray)
|
|
|
1488 aggr = aggr->castTo(sc, tn->arrayOf());
|
|
|
1489 exps->push(aggr);
|
|
|
1490 exps->push(flde);
|
|
|
1491 e = new CallExp(loc, ec, exps);
|
|
|
1492 e->type = Type::tindex; // don't run semantic() on e
|
|
|
1493 }
|
|
|
1494 else if (tab->ty == Tdelegate)
|
|
|
1495 {
|
|
|
1496 /* Call:
|
|
|
1497 * aggr(flde)
|
|
|
1498 */
|
|
|
1499 Expressions *exps = new Expressions();
|
|
|
1500 exps->push(flde);
|
|
|
1501 e = new CallExp(loc, aggr, exps);
|
|
|
1502 e = e->semantic(sc);
|
|
|
1503 if (e->type != Type::tint32)
|
|
|
1504 error("opApply() function for %s must return an int", tab->toChars());
|
|
|
1505 }
|
|
|
1506 else
|
|
|
1507 {
|
|
|
1508 /* Call:
|
|
|
1509 * aggr.apply(flde)
|
|
|
1510 */
|
|
|
1511 ec = new DotIdExp(loc, aggr,
|
|
|
1512 (op == TOKforeach_reverse) ? Id::applyReverse
|
|
|
1513 : Id::apply);
|
|
|
1514 Expressions *exps = new Expressions();
|
|
|
1515 exps->push(flde);
|
|
|
1516 e = new CallExp(loc, ec, exps);
|
|
|
1517 e = e->semantic(sc);
|
|
|
1518 if (e->type != Type::tint32)
|
|
|
1519 error("opApply() function for %s must return an int", tab->toChars());
|
|
|
1520 }
|
|
|
1521
|
|
|
1522 if (!cases.dim)
|
|
|
1523 // Easy case, a clean exit from the loop
|
|
|
1524 s = new ExpStatement(loc, e);
|
|
|
1525 else
|
|
|
1526 { // Construct a switch statement around the return value
|
|
|
1527 // of the apply function.
|
|
|
1528 Statements *a = new Statements();
|
|
|
1529
|
|
|
1530 // default: break; takes care of cases 0 and 1
|
|
|
1531 s = new BreakStatement(0, NULL);
|
|
|
1532 s = new DefaultStatement(0, s);
|
|
|
1533 a->push(s);
|
|
|
1534
|
|
|
1535 // cases 2...
|
|
|
1536 for (int i = 0; i < cases.dim; i++)
|
|
|
1537 {
|
|
|
1538 s = (Statement *)cases.data[i];
|
|
|
1539 s = new CaseStatement(0, new IntegerExp(i + 2), s);
|
|
|
1540 a->push(s);
|
|
|
1541 }
|
|
|
1542
|
|
|
1543 s = new CompoundStatement(loc, a);
|
|
|
1544 s = new SwitchStatement(loc, e, s);
|
|
|
1545 s = s->semantic(sc);
|
|
|
1546 }
|
|
|
1547 break;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 default:
|
|
|
1551 error("foreach: %s is not an aggregate type", aggr->type->toChars());
|
|
|
1552 break;
|
|
|
1553 }
|
|
|
1554 sc->noctor--;
|
|
|
1555 sc->pop();
|
|
|
1556 return s;
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 int ForeachStatement::hasBreak()
|
|
|
1560 {
|
|
|
1561 return TRUE;
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 int ForeachStatement::hasContinue()
|
|
|
1565 {
|
|
|
1566 return TRUE;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 int ForeachStatement::usesEH()
|
|
|
1570 {
|
|
|
1571 return body->usesEH();
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 int ForeachStatement::fallOffEnd()
|
|
|
1575 {
|
|
|
1576 if (body)
|
|
|
1577 body->fallOffEnd();
|
|
|
1578 return TRUE;
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 int ForeachStatement::comeFrom()
|
|
|
1582 {
|
|
|
1583 if (body)
|
|
|
1584 return body->comeFrom();
|
|
|
1585 return FALSE;
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
1589 {
|
|
|
1590 buf->writestring(Token::toChars(op));
|
|
|
1591 buf->writestring(" (");
|
|
|
1592 int i;
|
|
|
1593 for (int i = 0; i < arguments->dim; i++)
|
|
|
1594 {
|
|
|
1595 Argument *a = (Argument *)arguments->data[i];
|
|
|
1596 if (i)
|
|
|
1597 buf->writestring(", ");
|
|
|
1598 if (a->storageClass & STCref)
|
|
|
1599 buf->writestring((global.params.Dversion == 1)
|
|
|
1600 ? (char*)"inout " : (char*)"ref ");
|
|
|
1601 if (a->type)
|
|
|
1602 a->type->toCBuffer(buf, a->ident, hgs);
|
|
|
1603 else
|
|
|
1604 buf->writestring(a->ident->toChars());
|
|
|
1605 }
|
|
|
1606 buf->writestring("; ");
|
|
|
1607 aggr->toCBuffer(buf, hgs);
|
|
|
1608 buf->writebyte(')');
|
|
|
1609 buf->writenl();
|
|
|
1610 buf->writebyte('{');
|
|
|
1611 buf->writenl();
|
|
|
1612 if (body)
|
|
|
1613 body->toCBuffer(buf, hgs);
|
|
|
1614 buf->writebyte('}');
|
|
|
1615 buf->writenl();
|
|
|
1616 }
|
|
|
1617
|
|
|
1618 /******************************** IfStatement ***************************/
|
|
|
1619
|
|
|
1620 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody)
|
|
|
1621 : Statement(loc)
|
|
|
1622 {
|
|
|
1623 this->arg = arg;
|
|
|
1624 this->condition = condition;
|
|
|
1625 this->ifbody = ifbody;
|
|
|
1626 this->elsebody = elsebody;
|
|
|
1627 this->match = NULL;
|
|
|
1628 }
|
|
|
1629
|
|
|
1630 Statement *IfStatement::syntaxCopy()
|
|
|
1631 {
|
|
|
1632 Statement *i = NULL;
|
|
|
1633 if (ifbody)
|
|
|
1634 i = ifbody->syntaxCopy();
|
|
|
1635
|
|
|
1636 Statement *e = NULL;
|
|
|
1637 if (elsebody)
|
|
|
1638 e = elsebody->syntaxCopy();
|
|
|
1639
|
|
|
1640 Argument *a = arg ? arg->syntaxCopy() : NULL;
|
|
|
1641 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e);
|
|
|
1642 return s;
|
|
|
1643 }
|
|
|
1644
|
|
|
1645 Statement *IfStatement::semantic(Scope *sc)
|
|
|
1646 {
|
|
|
1647 condition = condition->semantic(sc);
|
|
|
1648 condition = resolveProperties(sc, condition);
|
|
|
1649 condition = condition->checkToBoolean();
|
|
|
1650
|
|
|
1651 // If we can short-circuit evaluate the if statement, don't do the
|
|
|
1652 // semantic analysis of the skipped code.
|
|
|
1653 // This feature allows a limited form of conditional compilation.
|
|
|
1654 condition = condition->optimize(WANTflags);
|
|
|
1655
|
|
|
1656 // Evaluate at runtime
|
|
|
1657 unsigned cs0 = sc->callSuper;
|
|
|
1658 unsigned cs1;
|
|
|
1659
|
|
|
1660 Scope *scd;
|
|
|
1661 if (arg)
|
|
|
1662 { /* Declare arg, which we will set to be the
|
|
|
1663 * result of condition.
|
|
|
1664 */
|
|
|
1665 ScopeDsymbol *sym = new ScopeDsymbol();
|
|
|
1666 sym->parent = sc->scopesym;
|
|
|
1667 scd = sc->push(sym);
|
|
|
1668
|
|
|
1669 Type *t = arg->type ? arg->type : condition->type;
|
|
|
1670 match = new VarDeclaration(loc, t, arg->ident, NULL);
|
|
|
1671 match->noauto = 1;
|
|
|
1672 match->semantic(scd);
|
|
|
1673 if (!scd->insert(match))
|
|
|
1674 assert(0);
|
|
|
1675 match->parent = sc->func;
|
|
|
1676
|
|
|
1677 /* Generate:
|
|
|
1678 * (arg = condition)
|
|
|
1679 */
|
|
|
1680 VarExp *v = new VarExp(0, match);
|
|
|
1681 condition = new AssignExp(loc, v, condition);
|
|
|
1682 condition = condition->semantic(scd);
|
|
|
1683 }
|
|
|
1684 else
|
|
|
1685 scd = sc->push();
|
|
|
1686 ifbody = ifbody->semantic(scd);
|
|
|
1687 scd->pop();
|
|
|
1688
|
|
|
1689 cs1 = sc->callSuper;
|
|
|
1690 sc->callSuper = cs0;
|
|
|
1691 if (elsebody)
|
|
|
1692 elsebody = elsebody->semanticScope(sc, NULL, NULL);
|
|
|
1693 sc->mergeCallSuper(loc, cs1);
|
|
|
1694
|
|
|
1695 return this;
|
|
|
1696 }
|
|
|
1697
|
|
|
1698 int IfStatement::usesEH()
|
|
|
1699 {
|
|
|
1700 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH());
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 int IfStatement::fallOffEnd()
|
|
|
1704 {
|
|
|
1705 if (!ifbody || ifbody->fallOffEnd() ||
|
|
|
1706 !elsebody || elsebody->fallOffEnd())
|
|
|
1707 return TRUE;
|
|
|
1708 return FALSE;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711
|
|
|
1712 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
1713 {
|
|
|
1714 buf->writestring("if (");
|
|
|
1715 if (arg)
|
|
|
1716 {
|
|
|
1717 if (arg->type)
|
|
|
1718 arg->type->toCBuffer(buf, arg->ident, hgs);
|
|
|
1719 else
|
|
|
1720 buf->writestring(arg->ident->toChars());
|
|
|
1721 buf->writebyte(';');
|
|
|
1722 }
|
|
|
1723 condition->toCBuffer(buf, hgs);
|
|
|
1724 buf->writebyte(')');
|
|
|
1725 buf->writenl();
|
|
|
1726 ifbody->toCBuffer(buf, hgs);
|
|
|
1727 if (elsebody)
|
|
|
1728 { buf->writestring("else");
|
|
|
1729 buf->writenl();
|
|
|
1730 elsebody->toCBuffer(buf, hgs);
|
|
|
1731 }
|
|
|
1732 }
|
|
|
1733
|
|
|
1734 /******************************** ConditionalStatement ***************************/
|
|
|
1735
|
|
|
1736 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody)
|
|
|
1737 : Statement(loc)
|
|
|
1738 {
|
|
|
1739 this->condition = condition;
|
|
|
1740 this->ifbody = ifbody;
|
|
|
1741 this->elsebody = elsebody;
|
|
|
1742 }
|
|
|
1743
|
|
|
1744 Statement *ConditionalStatement::syntaxCopy()
|
|
|
1745 {
|
|
|
1746 Statement *e = NULL;
|
|
|
1747 if (elsebody)
|
|
|
1748 e = elsebody->syntaxCopy();
|
|
|
1749 ConditionalStatement *s = new ConditionalStatement(loc,
|
|
|
1750 condition->syntaxCopy(), ifbody->syntaxCopy(), e);
|
|
|
1751 return s;
|
|
|
1752 }
|
|
|
1753
|
|
|
1754 Statement *ConditionalStatement::semantic(Scope *sc)
|
|
|
1755 {
|
|
|
1756 //printf("ConditionalStatement::semantic()\n");
|
|
|
1757
|
|
|
1758 // If we can short-circuit evaluate the if statement, don't do the
|
|
|
1759 // semantic analysis of the skipped code.
|
|
|
1760 // This feature allows a limited form of conditional compilation.
|
|
|
1761 if (condition->include(sc, NULL))
|
|
|
1762 {
|
|
|
1763 ifbody = ifbody->semantic(sc);
|
|
|
1764 return ifbody;
|
|
|
1765 }
|
|
|
1766 else
|
|
|
1767 {
|
|
|
1768 if (elsebody)
|
|
|
1769 elsebody = elsebody->semantic(sc);
|
|
|
1770 return elsebody;
|
|
|
1771 }
|
|
|
1772 }
|
|
|
1773
|
|
|
1774 Statements *ConditionalStatement::flatten(Scope *sc)
|
|
|
1775 {
|
|
|
1776 Statement *s;
|
|
|
1777
|
|
|
1778 if (condition->include(sc, NULL))
|
|
|
1779 s = ifbody;
|
|
|
1780 else
|
|
|
1781 s = elsebody;
|
|
|
1782
|
|
|
1783 Statements *a = new Statements();
|
|
|
1784 a->push(s);
|
|
|
1785 return a;
|
|
|
1786 }
|
|
|
1787
|
|
|
1788 int ConditionalStatement::usesEH()
|
|
|
1789 {
|
|
|
1790 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH());
|
|
|
1791 }
|
|
|
1792
|
|
|
1793 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
1794 {
|
|
|
1795 condition->toCBuffer(buf, hgs);
|
|
|
1796 buf->writenl();
|
|
|
1797 if (ifbody)
|
|
|
1798 ifbody->toCBuffer(buf, hgs);
|
|
|
1799 if (elsebody)
|
|
|
1800 {
|
|
|
1801 buf->writestring("else");
|
|
|
1802 buf->writenl();
|
|
|
1803 elsebody->toCBuffer(buf, hgs);
|
|
|
1804 }
|
|
|
1805 buf->writenl();
|
|
|
1806 }
|
|
|
1807
|
|
|
1808
|
|
|
1809 /******************************** PragmaStatement ***************************/
|
|
|
1810
|
|
|
1811 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body)
|
|
|
1812 : Statement(loc)
|
|
|
1813 {
|
|
|
1814 this->ident = ident;
|
|
|
1815 this->args = args;
|
|
|
1816 this->body = body;
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 Statement *PragmaStatement::syntaxCopy()
|
|
|
1820 {
|
|
|
1821 Statement *b = NULL;
|
|
|
1822 if (body)
|
|
|
1823 b = body->syntaxCopy();
|
|
|
1824 PragmaStatement *s = new PragmaStatement(loc,
|
|
|
1825 ident, Expression::arraySyntaxCopy(args), b);
|
|
|
1826 return s;
|
|
|
1827 }
|
|
|
1828
|
|
|
1829 Statement *PragmaStatement::semantic(Scope *sc)
|
|
|
1830 { // Should be merged with PragmaDeclaration
|
|
|
1831 //printf("PragmaStatement::semantic() %s\n", toChars());
|
|
|
1832 //printf("body = %p\n", body);
|
|
|
1833 if (ident == Id::msg)
|
|
|
1834 {
|
|
|
1835 if (args)
|
|
|
1836 {
|
|
|
1837 for (size_t i = 0; i < args->dim; i++)
|
|
|
1838 {
|
|
|
1839 Expression *e = (Expression *)args->data[i];
|
|
|
1840
|
|
|
1841 e = e->semantic(sc);
|
|
|
1842 e = e->optimize(WANTvalue | WANTinterpret);
|
|
|
1843 if (e->op == TOKstring)
|
|
|
1844 {
|
|
|
1845 StringExp *se = (StringExp *)e;
|
|
|
1846 fprintf(stdmsg, "%.*s", (int)se->len, se->string);
|
|
|
1847 }
|
|
|
1848 else
|
|
|
1849 error("string expected for message, not '%s'", e->toChars());
|
|
|
1850 }
|
|
|
1851 fprintf(stdmsg, "\n");
|
|
|
1852 }
|
|
|
1853 }
|
|
|
1854 else if (ident == Id::lib)
|
|
|
1855 {
|
|
|
1856 if (!args || args->dim != 1)
|
|
|
1857 error("string expected for library name");
|
|
|
1858 else
|
|
|
1859 {
|
|
|
1860 Expression *e = (Expression *)args->data[0];
|
|
|
1861
|
|
|
1862 e = e->semantic(sc);
|
|
|
1863 e = e->optimize(WANTvalue | WANTinterpret);
|
|
|
1864 args->data[0] = (void *)e;
|
|
|
1865 if (e->op != TOKstring)
|
|
|
1866 error("string expected for library name, not '%s'", e->toChars());
|
|
|
1867 else if (global.params.verbose)
|
|
|
1868 {
|
|
|
1869 StringExp *se = (StringExp *)e;
|
|
|
1870 char *name = (char *)mem.malloc(se->len + 1);
|
|
|
1871 memcpy(name, se->string, se->len);
|
|
|
1872 name[se->len] = 0;
|
|
|
1873 printf("library %s\n", name);
|
|
|
1874 mem.free(name);
|
|
|
1875 }
|
|
|
1876 }
|
|
|
1877 }
|
|
|
1878 else
|
|
|
1879 error("unrecognized pragma(%s)", ident->toChars());
|
|
|
1880
|
|
|
1881 if (body)
|
|
|
1882 {
|
|
|
1883 body = body->semantic(sc);
|
|
|
1884 }
|
|
|
1885 return body;
|
|
|
1886 }
|
|
|
1887
|
|
|
1888 int PragmaStatement::usesEH()
|
|
|
1889 {
|
|
|
1890 return body && body->usesEH();
|
|
|
1891 }
|
|
|
1892
|
|
|
1893 int PragmaStatement::fallOffEnd()
|
|
|
1894 {
|
|
|
1895 if (body)
|
|
|
1896 return body->fallOffEnd();
|
|
|
1897 return TRUE;
|
|
|
1898 }
|
|
|
1899
|
|
|
1900 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
1901 {
|
|
|
1902 buf->writestring("pragma (");
|
|
|
1903 buf->writestring(ident->toChars());
|
|
|
1904 if (args && args->dim)
|
|
|
1905 {
|
|
|
1906 buf->writestring(", ");
|
|
|
1907 argsToCBuffer(buf, args, hgs);
|
|
|
1908 }
|
|
|
1909 buf->writeByte(')');
|
|
|
1910 if (body)
|
|
|
1911 {
|
|
|
1912 buf->writenl();
|
|
|
1913 buf->writeByte('{');
|
|
|
1914 buf->writenl();
|
|
|
1915
|
|
|
1916 body->toCBuffer(buf, hgs);
|
|
|
1917
|
|
|
1918 buf->writeByte('}');
|
|
|
1919 buf->writenl();
|
|
|
1920 }
|
|
|
1921 else
|
|
|
1922 {
|
|
|
1923 buf->writeByte(';');
|
|
|
1924 buf->writenl();
|
|
|
1925 }
|
|
|
1926 }
|
|
|
1927
|
|
|
1928
|
|
|
1929 /******************************** StaticAssertStatement ***************************/
|
|
|
1930
|
|
|
1931 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa)
|
|
|
1932 : Statement(sa->loc)
|
|
|
1933 {
|
|
|
1934 this->sa = sa;
|
|
|
1935 }
|
|
|
1936
|
|
|
1937 Statement *StaticAssertStatement::syntaxCopy()
|
|
|
1938 {
|
|
|
1939 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL));
|
|
|
1940 return s;
|
|
|
1941 }
|
|
|
1942
|
|
|
1943 Statement *StaticAssertStatement::semantic(Scope *sc)
|
|
|
1944 {
|
|
|
1945 sa->semantic2(sc);
|
|
|
1946 return NULL;
|
|
|
1947 }
|
|
|
1948
|
|
|
1949 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
1950 {
|
|
|
1951 sa->toCBuffer(buf, hgs);
|
|
|
1952 }
|
|
|
1953
|
|
|
1954
|
|
|
1955 /******************************** SwitchStatement ***************************/
|
|
|
1956
|
|
|
1957 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b)
|
|
|
1958 : Statement(loc)
|
|
|
1959 {
|
|
|
1960 condition = c;
|
|
|
1961 body = b;
|
|
|
1962 sdefault = NULL;
|
|
|
1963 cases = NULL;
|
|
|
1964 hasNoDefault = 0;
|
|
|
1965 }
|
|
|
1966
|
|
|
1967 Statement *SwitchStatement::syntaxCopy()
|
|
|
1968 {
|
|
|
1969 SwitchStatement *s = new SwitchStatement(loc,
|
|
|
1970 condition->syntaxCopy(), body->syntaxCopy());
|
|
|
1971 return s;
|
|
|
1972 }
|
|
|
1973
|
|
|
1974 Statement *SwitchStatement::semantic(Scope *sc)
|
|
|
1975 {
|
|
|
1976 //printf("SwitchStatement::semantic(%p)\n", this);
|
|
|
1977 assert(!cases); // ensure semantic() is only run once
|
|
|
1978 condition = condition->semantic(sc);
|
|
|
1979 condition = resolveProperties(sc, condition);
|
|
|
1980 if (condition->type->isString())
|
|
|
1981 {
|
|
|
1982 // If it's not an array, cast it to one
|
|
|
1983 if (condition->type->ty != Tarray)
|
|
|
1984 {
|
|
|
1985 condition = condition->implicitCastTo(sc, condition->type->next->arrayOf());
|
|
|
1986 }
|
|
|
1987 }
|
|
|
1988 else
|
|
|
1989 { condition = condition->integralPromotions(sc);
|
|
|
1990 condition->checkIntegral();
|
|
|
1991 }
|
|
|
1992
|
|
|
1993 sc = sc->push();
|
|
|
1994 sc->sbreak = this;
|
|
|
1995 sc->sw = this;
|
|
|
1996
|
|
|
1997 cases = new Array();
|
|
|
1998 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead
|
|
|
1999 body = body->semantic(sc);
|
|
|
2000 sc->noctor--;
|
|
|
2001
|
|
|
2002 // Resolve any goto case's with exp
|
|
|
2003 for (int i = 0; i < gotoCases.dim; i++)
|
|
|
2004 {
|
|
|
2005 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i];
|
|
|
2006
|
|
|
2007 if (!gcs->exp)
|
|
|
2008 {
|
|
|
2009 gcs->error("no case statement following goto case;");
|
|
|
2010 break;
|
|
|
2011 }
|
|
|
2012
|
|
|
2013 for (Scope *scx = sc; scx; scx = scx->enclosing)
|
|
|
2014 {
|
|
|
2015 if (!scx->sw)
|
|
|
2016 continue;
|
|
|
2017 for (int j = 0; j < scx->sw->cases->dim; j++)
|
|
|
2018 {
|
|
|
2019 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j];
|
|
|
2020
|
|
|
2021 if (cs->exp->equals(gcs->exp))
|
|
|
2022 {
|
|
|
2023 gcs->cs = cs;
|
|
|
2024 goto Lfoundcase;
|
|
|
2025 }
|
|
|
2026 }
|
|
|
2027 }
|
|
|
2028 gcs->error("case %s not found", gcs->exp->toChars());
|
|
|
2029
|
|
|
2030 Lfoundcase:
|
|
|
2031 ;
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 if (!sc->sw->sdefault)
|
|
|
2035 { hasNoDefault = 1;
|
|
|
2036
|
|
|
2037 if (global.params.warnings)
|
|
|
2038 { fprintf(stdmsg, "warning - ");
|
|
|
2039 error("switch statement has no default");
|
|
|
2040 }
|
|
|
2041
|
|
|
2042 // Generate runtime error if the default is hit
|
|
|
2043 Statements *a = new Statements();
|
|
|
2044 CompoundStatement *cs;
|
|
|
2045 Statement *s;
|
|
|
2046
|
|
|
2047 if (global.params.useSwitchError)
|
|
|
2048 s = new SwitchErrorStatement(loc);
|
|
|
2049 else
|
|
|
2050 { Expression *e = new HaltExp(loc);
|
|
|
2051 s = new ExpStatement(loc, e);
|
|
|
2052 }
|
|
|
2053
|
|
|
2054 a->reserve(4);
|
|
|
2055 a->push(body);
|
|
|
2056 a->push(new BreakStatement(loc, NULL));
|
|
|
2057 sc->sw->sdefault = new DefaultStatement(loc, s);
|
|
|
2058 a->push(sc->sw->sdefault);
|
|
|
2059 cs = new CompoundStatement(loc, a);
|
|
|
2060 body = cs;
|
|
|
2061 }
|
|
|
2062
|
|
|
2063 sc->pop();
|
|
|
2064 return this;
|
|
|
2065 }
|
|
|
2066
|
|
|
2067 int SwitchStatement::hasBreak()
|
|
|
2068 {
|
|
|
2069 return TRUE;
|
|
|
2070 }
|
|
|
2071
|
|
|
2072 int SwitchStatement::usesEH()
|
|
|
2073 {
|
|
|
2074 return body ? body->usesEH() : 0;
|
|
|
2075 }
|
|
|
2076
|
|
|
2077 int SwitchStatement::fallOffEnd()
|
|
|
2078 {
|
|
|
2079 if (body)
|
|
|
2080 body->fallOffEnd();
|
|
|
2081 return TRUE; // need to do this better
|
|
|
2082 }
|
|
|
2083
|
|
|
2084 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2085 {
|
|
|
2086 buf->writestring("switch (");
|
|
|
2087 condition->toCBuffer(buf, hgs);
|
|
|
2088 buf->writebyte(')');
|
|
|
2089 buf->writenl();
|
|
|
2090 if (body)
|
|
|
2091 {
|
|
|
2092 if (!body->isScopeStatement())
|
|
|
2093 { buf->writebyte('{');
|
|
|
2094 buf->writenl();
|
|
|
2095 body->toCBuffer(buf, hgs);
|
|
|
2096 buf->writebyte('}');
|
|
|
2097 buf->writenl();
|
|
|
2098 }
|
|
|
2099 else
|
|
|
2100 {
|
|
|
2101 body->toCBuffer(buf, hgs);
|
|
|
2102 }
|
|
|
2103 }
|
|
|
2104 }
|
|
|
2105
|
|
|
2106 /******************************** CaseStatement ***************************/
|
|
|
2107
|
|
|
2108 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s)
|
|
|
2109 : Statement(loc)
|
|
|
2110 {
|
|
|
2111 this->exp = exp;
|
|
|
2112 this->statement = s;
|
|
|
2113 cblock = NULL;
|
|
|
2114 }
|
|
|
2115
|
|
|
2116 Statement *CaseStatement::syntaxCopy()
|
|
|
2117 {
|
|
|
2118 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy());
|
|
|
2119 return s;
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 Statement *CaseStatement::semantic(Scope *sc)
|
|
|
2123 { SwitchStatement *sw = sc->sw;
|
|
|
2124
|
|
|
2125 exp = exp->semantic(sc);
|
|
|
2126 if (sw)
|
|
|
2127 { int i;
|
|
|
2128
|
|
|
2129 exp = exp->implicitCastTo(sc, sw->condition->type);
|
|
|
2130 exp = exp->optimize(WANTvalue | WANTinterpret);
|
|
|
2131 if (exp->op != TOKstring && exp->op != TOKint64)
|
|
|
2132 {
|
|
|
2133 error("case must be a string or an integral constant, not %s", exp->toChars());
|
|
|
2134 exp = new IntegerExp(0);
|
|
|
2135 }
|
|
|
2136
|
|
|
2137 for (i = 0; i < sw->cases->dim; i++)
|
|
|
2138 {
|
|
|
2139 CaseStatement *cs = (CaseStatement *)sw->cases->data[i];
|
|
|
2140
|
|
|
2141 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars());
|
|
|
2142 if (cs->exp->equals(exp))
|
|
|
2143 { error("duplicate case %s in switch statement", exp->toChars());
|
|
|
2144 break;
|
|
|
2145 }
|
|
|
2146 }
|
|
|
2147
|
|
|
2148 sw->cases->push(this);
|
|
|
2149
|
|
|
2150 // Resolve any goto case's with no exp to this case statement
|
|
|
2151 for (i = 0; i < sw->gotoCases.dim; i++)
|
|
|
2152 {
|
|
|
2153 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i];
|
|
|
2154
|
|
|
2155 if (!gcs->exp)
|
|
|
2156 {
|
|
|
2157 gcs->cs = this;
|
|
|
2158 sw->gotoCases.remove(i); // remove from array
|
|
|
2159 }
|
|
|
2160 }
|
|
|
2161 }
|
|
|
2162 else
|
|
|
2163 error("case not in switch statement");
|
|
|
2164 statement = statement->semantic(sc);
|
|
|
2165 return this;
|
|
|
2166 }
|
|
|
2167
|
|
|
2168 int CaseStatement::compare(Object *obj)
|
|
|
2169 {
|
|
|
2170 // Sort cases so we can do an efficient lookup
|
|
|
2171 CaseStatement *cs2 = (CaseStatement *)(obj);
|
|
|
2172
|
|
|
2173 return exp->compare(cs2->exp);
|
|
|
2174 }
|
|
|
2175
|
|
|
2176 int CaseStatement::usesEH()
|
|
|
2177 {
|
|
|
2178 return statement->usesEH();
|
|
|
2179 }
|
|
|
2180
|
|
|
2181 int CaseStatement::fallOffEnd()
|
|
|
2182 {
|
|
|
2183 return statement->fallOffEnd();
|
|
|
2184 }
|
|
|
2185
|
|
|
2186 int CaseStatement::comeFrom()
|
|
|
2187 {
|
|
|
2188 return TRUE;
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2192 {
|
|
|
2193 buf->writestring("case ");
|
|
|
2194 exp->toCBuffer(buf, hgs);
|
|
|
2195 buf->writebyte(':');
|
|
|
2196 buf->writenl();
|
|
|
2197 statement->toCBuffer(buf, hgs);
|
|
|
2198 }
|
|
|
2199
|
|
|
2200 /******************************** DefaultStatement ***************************/
|
|
|
2201
|
|
|
2202 DefaultStatement::DefaultStatement(Loc loc, Statement *s)
|
|
|
2203 : Statement(loc)
|
|
|
2204 {
|
|
|
2205 this->statement = s;
|
|
|
2206 #if IN_GCC
|
|
|
2207 + cblock = NULL;
|
|
|
2208 #endif
|
|
|
2209 }
|
|
|
2210
|
|
|
2211 Statement *DefaultStatement::syntaxCopy()
|
|
|
2212 {
|
|
|
2213 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy());
|
|
|
2214 return s;
|
|
|
2215 }
|
|
|
2216
|
|
|
2217 Statement *DefaultStatement::semantic(Scope *sc)
|
|
|
2218 {
|
|
|
2219 if (sc->sw)
|
|
|
2220 {
|
|
|
2221 if (sc->sw->sdefault)
|
|
|
2222 {
|
|
|
2223 error("switch statement already has a default");
|
|
|
2224 }
|
|
|
2225 sc->sw->sdefault = this;
|
|
|
2226 }
|
|
|
2227 else
|
|
|
2228 error("default not in switch statement");
|
|
|
2229 statement = statement->semantic(sc);
|
|
|
2230 return this;
|
|
|
2231 }
|
|
|
2232
|
|
|
2233 int DefaultStatement::usesEH()
|
|
|
2234 {
|
|
|
2235 return statement->usesEH();
|
|
|
2236 }
|
|
|
2237
|
|
|
2238 int DefaultStatement::fallOffEnd()
|
|
|
2239 {
|
|
|
2240 return statement->fallOffEnd();
|
|
|
2241 }
|
|
|
2242
|
|
|
2243 int DefaultStatement::comeFrom()
|
|
|
2244 {
|
|
|
2245 return TRUE;
|
|
|
2246 }
|
|
|
2247
|
|
|
2248 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2249 {
|
|
|
2250 buf->writestring("default:\n");
|
|
|
2251 statement->toCBuffer(buf, hgs);
|
|
|
2252 }
|
|
|
2253
|
|
|
2254 /******************************** GotoDefaultStatement ***************************/
|
|
|
2255
|
|
|
2256 GotoDefaultStatement::GotoDefaultStatement(Loc loc)
|
|
|
2257 : Statement(loc)
|
|
|
2258 {
|
|
|
2259 sw = NULL;
|
|
|
2260 }
|
|
|
2261
|
|
|
2262 Statement *GotoDefaultStatement::syntaxCopy()
|
|
|
2263 {
|
|
|
2264 GotoDefaultStatement *s = new GotoDefaultStatement(loc);
|
|
|
2265 return s;
|
|
|
2266 }
|
|
|
2267
|
|
|
2268 Statement *GotoDefaultStatement::semantic(Scope *sc)
|
|
|
2269 {
|
|
|
2270 sw = sc->sw;
|
|
|
2271 if (!sw)
|
|
|
2272 error("goto default not in switch statement");
|
|
|
2273 return this;
|
|
|
2274 }
|
|
|
2275
|
|
|
2276 int GotoDefaultStatement::fallOffEnd()
|
|
|
2277 {
|
|
|
2278 return FALSE;
|
|
|
2279 }
|
|
|
2280
|
|
|
2281 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2282 {
|
|
|
2283 buf->writestring("goto default;\n");
|
|
|
2284 }
|
|
|
2285
|
|
|
2286 /******************************** GotoCaseStatement ***************************/
|
|
|
2287
|
|
|
2288 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp)
|
|
|
2289 : Statement(loc)
|
|
|
2290 {
|
|
|
2291 cs = NULL;
|
|
|
2292 this->exp = exp;
|
|
|
2293 }
|
|
|
2294
|
|
|
2295 Statement *GotoCaseStatement::syntaxCopy()
|
|
|
2296 {
|
|
|
2297 Expression *e = exp ? exp->syntaxCopy() : NULL;
|
|
|
2298 GotoCaseStatement *s = new GotoCaseStatement(loc, e);
|
|
|
2299 return s;
|
|
|
2300 }
|
|
|
2301
|
|
|
2302 Statement *GotoCaseStatement::semantic(Scope *sc)
|
|
|
2303 {
|
|
|
2304 if (exp)
|
|
|
2305 exp = exp->semantic(sc);
|
|
|
2306
|
|
|
2307 if (!sc->sw)
|
|
|
2308 error("goto case not in switch statement");
|
|
|
2309 else
|
|
|
2310 {
|
|
|
2311 sc->sw->gotoCases.push(this);
|
|
|
2312 if (exp)
|
|
|
2313 {
|
|
|
2314 exp = exp->implicitCastTo(sc, sc->sw->condition->type);
|
|
|
2315 exp = exp->optimize(WANTvalue);
|
|
|
2316 }
|
|
|
2317 }
|
|
|
2318 return this;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321 int GotoCaseStatement::fallOffEnd()
|
|
|
2322 {
|
|
|
2323 return FALSE;
|
|
|
2324 }
|
|
|
2325
|
|
|
2326 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2327 {
|
|
|
2328 buf->writestring("goto case");
|
|
|
2329 if (exp)
|
|
|
2330 { buf->writebyte(' ');
|
|
|
2331 exp->toCBuffer(buf, hgs);
|
|
|
2332 }
|
|
|
2333 buf->writebyte(';');
|
|
|
2334 buf->writenl();
|
|
|
2335 }
|
|
|
2336
|
|
|
2337 /******************************** SwitchErrorStatement ***************************/
|
|
|
2338
|
|
|
2339 SwitchErrorStatement::SwitchErrorStatement(Loc loc)
|
|
|
2340 : Statement(loc)
|
|
|
2341 {
|
|
|
2342 }
|
|
|
2343
|
|
|
2344 int SwitchErrorStatement::fallOffEnd()
|
|
|
2345 {
|
|
|
2346 return FALSE;
|
|
|
2347 }
|
|
|
2348
|
|
|
2349 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2350 {
|
|
|
2351 buf->writestring("SwitchErrorStatement::toCBuffer()");
|
|
|
2352 buf->writenl();
|
|
|
2353 }
|
|
|
2354
|
|
|
2355 /******************************** ReturnStatement ***************************/
|
|
|
2356
|
|
|
2357 ReturnStatement::ReturnStatement(Loc loc, Expression *exp)
|
|
|
2358 : Statement(loc)
|
|
|
2359 {
|
|
|
2360 this->exp = exp;
|
|
|
2361 }
|
|
|
2362
|
|
|
2363 Statement *ReturnStatement::syntaxCopy()
|
|
|
2364 {
|
|
|
2365 Expression *e = NULL;
|
|
|
2366 if (exp)
|
|
|
2367 e = exp->syntaxCopy();
|
|
|
2368 ReturnStatement *s = new ReturnStatement(loc, e);
|
|
|
2369 return s;
|
|
|
2370 }
|
|
|
2371
|
|
|
2372 Statement *ReturnStatement::semantic(Scope *sc)
|
|
|
2373 {
|
|
|
2374 //printf("ReturnStatement::semantic() %s\n", toChars());
|
|
|
2375
|
|
|
2376 FuncDeclaration *fd = sc->parent->isFuncDeclaration();
|
|
|
2377 Scope *scx = sc;
|
|
|
2378 int implicit0 = 0;
|
|
|
2379
|
|
|
2380 if (sc->fes)
|
|
|
2381 {
|
|
|
2382 // Find scope of function foreach is in
|
|
|
2383 for (; 1; scx = scx->enclosing)
|
|
|
2384 {
|
|
|
2385 assert(scx);
|
|
|
2386 if (scx->func != fd)
|
|
|
2387 { fd = scx->func; // fd is now function enclosing foreach
|
|
|
2388 break;
|
|
|
2389 }
|
|
|
2390 }
|
|
|
2391 }
|
|
|
2392
|
|
|
2393 Type *tret = fd->type->next;
|
|
|
2394 if (fd->tintro)
|
|
|
2395 tret = fd->tintro->next;
|
|
|
2396 Type *tbret = NULL;
|
|
|
2397
|
|
|
2398 if (tret)
|
|
|
2399 tbret = tret->toBasetype();
|
|
|
2400
|
|
|
2401 // main() returns 0, even if it returns void
|
|
|
2402 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain())
|
|
|
2403 { implicit0 = 1;
|
|
|
2404 exp = new IntegerExp(0);
|
|
|
2405 }
|
|
|
2406
|
|
|
2407 if (sc->incontract || scx->incontract)
|
|
|
2408 error("return statements cannot be in contracts");
|
|
|
2409 if (sc->tf || scx->tf)
|
|
|
2410 error("return statements cannot be in finally, scope(exit) or scope(success) bodies");
|
|
|
2411
|
|
|
2412 if (fd->isCtorDeclaration())
|
|
|
2413 {
|
|
|
2414 // Constructors implicitly do:
|
|
|
2415 // return this;
|
|
|
2416 if (exp && exp->op != TOKthis)
|
|
|
2417 error("cannot return expression from constructor");
|
|
|
2418 exp = new ThisExp(0);
|
|
|
2419 }
|
|
|
2420
|
|
|
2421 if (!exp)
|
|
|
2422 fd->nrvo_can = 0;
|
|
|
2423
|
|
|
2424 if (exp)
|
|
|
2425 {
|
|
|
2426 fd->hasReturnExp |= 1;
|
|
|
2427
|
|
|
2428 exp = exp->semantic(sc);
|
|
|
2429 exp = resolveProperties(sc, exp);
|
|
|
2430 exp = exp->optimize(WANTvalue);
|
|
|
2431
|
|
|
2432 if (fd->nrvo_can && exp->op == TOKvar)
|
|
|
2433 { VarExp *ve = (VarExp *)exp;
|
|
|
2434 VarDeclaration *v = ve->var->isVarDeclaration();
|
|
|
2435
|
|
|
2436 if (!v || v->isOut() || v->isRef())
|
|
|
2437 fd->nrvo_can = 0;
|
|
|
2438 else if (fd->nrvo_var == NULL)
|
|
|
2439 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd)
|
|
|
2440 fd->nrvo_var = v;
|
|
|
2441 else
|
|
|
2442 fd->nrvo_can = 0;
|
|
|
2443 }
|
|
|
2444 else if (fd->nrvo_var != v)
|
|
|
2445 fd->nrvo_can = 0;
|
|
|
2446 }
|
|
|
2447 else
|
|
|
2448 fd->nrvo_can = 0;
|
|
|
2449
|
|
|
2450 if (fd->returnLabel && tbret->ty != Tvoid)
|
|
|
2451 {
|
|
|
2452 }
|
|
|
2453 else if (fd->inferRetType)
|
|
|
2454 {
|
|
|
2455 if (fd->type->next)
|
|
|
2456 {
|
|
|
2457 if (!exp->type->equals(fd->type->next))
|
|
|
2458 error("mismatched function return type inference of %s and %s",
|
|
|
2459 exp->type->toChars(), fd->type->next->toChars());
|
|
|
2460 }
|
|
|
2461 else
|
|
|
2462 {
|
|
|
2463 fd->type->next = exp->type;
|
|
|
2464 fd->type = fd->type->semantic(loc, sc);
|
|
|
2465 if (!fd->tintro)
|
|
|
2466 { tret = fd->type->next;
|
|
|
2467 tbret = tret->toBasetype();
|
|
|
2468 }
|
|
|
2469 }
|
|
|
2470 }
|
|
|
2471 else if (tbret->ty != Tvoid)
|
|
|
2472 {
|
|
|
2473 exp = exp->implicitCastTo(sc, tret);
|
|
|
2474 }
|
|
|
2475 }
|
|
|
2476 else if (fd->inferRetType)
|
|
|
2477 {
|
|
|
2478 if (fd->type->next)
|
|
|
2479 {
|
|
|
2480 if (fd->type->next->ty != Tvoid)
|
|
|
2481 error("mismatched function return type inference of void and %s",
|
|
|
2482 fd->type->next->toChars());
|
|
|
2483 }
|
|
|
2484 else
|
|
|
2485 {
|
|
|
2486 fd->type->next = Type::tvoid;
|
|
|
2487 fd->type = fd->type->semantic(loc, sc);
|
|
|
2488 if (!fd->tintro)
|
|
|
2489 { tret = Type::tvoid;
|
|
|
2490 tbret = tret;
|
|
|
2491 }
|
|
|
2492 }
|
|
|
2493 }
|
|
|
2494 else if (tbret->ty != Tvoid) // if non-void return
|
|
|
2495 error("return expression expected");
|
|
|
2496
|
|
|
2497 if (sc->fes)
|
|
|
2498 {
|
|
|
2499 Statement *s;
|
|
|
2500
|
|
|
2501 if (exp && !implicit0)
|
|
|
2502 {
|
|
|
2503 exp = exp->implicitCastTo(sc, tret);
|
|
|
2504 }
|
|
|
2505 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 ||
|
|
|
2506 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 ||
|
|
|
2507 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull ||
|
|
|
2508 exp->op == TOKstring)
|
|
|
2509 {
|
|
|
2510 sc->fes->cases.push(this);
|
|
|
2511 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1));
|
|
|
2512 }
|
|
|
2513 else if (fd->type->next->toBasetype() == Type::tvoid)
|
|
|
2514 {
|
|
|
2515 Statement *s1;
|
|
|
2516 Statement *s2;
|
|
|
2517
|
|
|
2518 s = new ReturnStatement(0, NULL);
|
|
|
2519 sc->fes->cases.push(s);
|
|
|
2520
|
|
|
2521 // Construct: { exp; return cases.dim + 1; }
|
|
|
2522 s1 = new ExpStatement(loc, exp);
|
|
|
2523 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1));
|
|
|
2524 s = new CompoundStatement(loc, s1, s2);
|
|
|
2525 }
|
|
|
2526 else
|
|
|
2527 {
|
|
|
2528 VarExp *v;
|
|
|
2529 Statement *s1;
|
|
|
2530 Statement *s2;
|
|
|
2531
|
|
|
2532 // Construct: return vresult;
|
|
|
2533 if (!fd->vresult)
|
|
|
2534 { VarDeclaration *v;
|
|
|
2535
|
|
|
2536 v = new VarDeclaration(loc, tret, Id::result, NULL);
|
|
|
2537 v->noauto = 1;
|
|
|
2538 v->semantic(scx);
|
|
|
2539 if (!scx->insert(v))
|
|
|
2540 assert(0);
|
|
|
2541 v->parent = fd;
|
|
|
2542 fd->vresult = v;
|
|
|
2543 }
|
|
|
2544
|
|
|
2545 v = new VarExp(0, fd->vresult);
|
|
|
2546 s = new ReturnStatement(0, v);
|
|
|
2547 sc->fes->cases.push(s);
|
|
|
2548
|
|
|
2549 // Construct: { vresult = exp; return cases.dim + 1; }
|
|
|
2550 v = new VarExp(0, fd->vresult);
|
|
|
2551 exp = new AssignExp(loc, v, exp);
|
|
|
2552 exp = exp->semantic(sc);
|
|
|
2553 s1 = new ExpStatement(loc, exp);
|
|
|
2554 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1));
|
|
|
2555 s = new CompoundStatement(loc, s1, s2);
|
|
|
2556 }
|
|
|
2557 return s;
|
|
|
2558 }
|
|
|
2559
|
|
|
2560 if (exp)
|
|
|
2561 {
|
|
|
2562 if (fd->returnLabel && tbret->ty != Tvoid)
|
|
|
2563 {
|
|
|
2564 assert(fd->vresult);
|
|
|
2565 VarExp *v = new VarExp(0, fd->vresult);
|
|
|
2566
|
|
|
2567 exp = new AssignExp(loc, v, exp);
|
|
|
2568 exp = exp->semantic(sc);
|
|
|
2569 }
|
|
|
2570 //exp->dump(0);
|
|
|
2571 //exp->print();
|
|
|
2572 exp->checkEscape();
|
|
|
2573 }
|
|
|
2574
|
|
|
2575 /* BUG: need to issue an error on:
|
|
|
2576 * this
|
|
|
2577 * { if (x) return;
|
|
|
2578 * super();
|
|
|
2579 * }
|
|
|
2580 */
|
|
|
2581
|
|
|
2582 if (sc->callSuper & CSXany_ctor &&
|
|
|
2583 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor)))
|
|
|
2584 error("return without calling constructor");
|
|
|
2585
|
|
|
2586 sc->callSuper |= CSXreturn;
|
|
|
2587
|
|
|
2588 // See if all returns are instead to be replaced with a goto returnLabel;
|
|
|
2589 if (fd->returnLabel)
|
|
|
2590 {
|
|
|
2591 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel);
|
|
|
2592
|
|
|
2593 gs->label = fd->returnLabel;
|
|
|
2594 if (exp)
|
|
|
2595 { Statement *s;
|
|
|
2596
|
|
|
2597 s = new ExpStatement(0, exp);
|
|
|
2598 return new CompoundStatement(loc, s, gs);
|
|
|
2599 }
|
|
|
2600 return gs;
|
|
|
2601 }
|
|
|
2602
|
|
|
2603 if (exp && tbret->ty == Tvoid && !fd->isMain())
|
|
|
2604 { Statement *s;
|
|
|
2605
|
|
|
2606 s = new ExpStatement(loc, exp);
|
|
|
2607 loc = 0;
|
|
|
2608 exp = NULL;
|
|
|
2609 return new CompoundStatement(loc, s, this);
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 return this;
|
|
|
2613 }
|
|
|
2614
|
|
|
2615 int ReturnStatement::fallOffEnd()
|
|
|
2616 {
|
|
|
2617 return FALSE;
|
|
|
2618 }
|
|
|
2619
|
|
|
2620 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2621 {
|
|
|
2622 buf->printf("return ");
|
|
|
2623 if (exp)
|
|
|
2624 exp->toCBuffer(buf, hgs);
|
|
|
2625 buf->writeByte(';');
|
|
|
2626 buf->writenl();
|
|
|
2627 }
|
|
|
2628
|
|
|
2629 /******************************** BreakStatement ***************************/
|
|
|
2630
|
|
|
2631 BreakStatement::BreakStatement(Loc loc, Identifier *ident)
|
|
|
2632 : Statement(loc)
|
|
|
2633 {
|
|
|
2634 this->ident = ident;
|
|
|
2635 }
|
|
|
2636
|
|
|
2637 Statement *BreakStatement::syntaxCopy()
|
|
|
2638 {
|
|
|
2639 BreakStatement *s = new BreakStatement(loc, ident);
|
|
|
2640 return s;
|
|
|
2641 }
|
|
|
2642
|
|
|
2643 Statement *BreakStatement::semantic(Scope *sc)
|
|
|
2644 {
|
|
|
2645 // If:
|
|
|
2646 // break Identifier;
|
|
|
2647 if (ident)
|
|
|
2648 {
|
|
|
2649 Scope *scx;
|
|
|
2650 FuncDeclaration *thisfunc = sc->func;
|
|
|
2651
|
|
|
2652 for (scx = sc; scx; scx = scx->enclosing)
|
|
|
2653 {
|
|
|
2654 LabelStatement *ls;
|
|
|
2655
|
|
|
2656 if (scx->func != thisfunc) // if in enclosing function
|
|
|
2657 {
|
|
|
2658 if (sc->fes) // if this is the body of a foreach
|
|
|
2659 {
|
|
|
2660 /* Post this statement to the fes, and replace
|
|
|
2661 * it with a return value that caller will put into
|
|
|
2662 * a switch. Caller will figure out where the break
|
|
|
2663 * label actually is.
|
|
|
2664 * Case numbers start with 2, not 0, as 0 is continue
|
|
|
2665 * and 1 is break.
|
|
|
2666 */
|
|
|
2667 Statement *s;
|
|
|
2668 sc->fes->cases.push(this);
|
|
|
2669 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1));
|
|
|
2670 return s;
|
|
|
2671 }
|
|
|
2672 break; // can't break to it
|
|
|
2673 }
|
|
|
2674
|
|
|
2675 ls = scx->slabel;
|
|
|
2676 if (ls && ls->ident == ident)
|
|
|
2677 {
|
|
|
2678 Statement *s = ls->statement;
|
|
|
2679
|
|
|
2680 if (!s->hasBreak())
|
|
|
2681 error("label '%s' has no break", ident->toChars());
|
|
|
2682 if (ls->tf != sc->tf)
|
|
|
2683 error("cannot break out of finally block");
|
|
|
2684 return this;
|
|
|
2685 }
|
|
|
2686 }
|
|
|
2687 error("enclosing label '%s' for break not found", ident->toChars());
|
|
|
2688 }
|
|
|
2689 else if (!sc->sbreak)
|
|
|
2690 {
|
|
|
2691 if (sc->fes)
|
|
|
2692 { Statement *s;
|
|
|
2693
|
|
|
2694 // Replace break; with return 1;
|
|
|
2695 s = new ReturnStatement(0, new IntegerExp(1));
|
|
|
2696 return s;
|
|
|
2697 }
|
|
|
2698 error("break is not inside a loop or switch");
|
|
|
2699 }
|
|
|
2700 return this;
|
|
|
2701 }
|
|
|
2702
|
|
|
2703 int BreakStatement::fallOffEnd()
|
|
|
2704 {
|
|
|
2705 return FALSE;
|
|
|
2706 }
|
|
|
2707
|
|
|
2708 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2709 {
|
|
|
2710 buf->writestring("break");
|
|
|
2711 if (ident)
|
|
|
2712 { buf->writebyte(' ');
|
|
|
2713 buf->writestring(ident->toChars());
|
|
|
2714 }
|
|
|
2715 buf->writebyte(';');
|
|
|
2716 buf->writenl();
|
|
|
2717 }
|
|
|
2718
|
|
|
2719 /******************************** ContinueStatement ***************************/
|
|
|
2720
|
|
|
2721 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident)
|
|
|
2722 : Statement(loc)
|
|
|
2723 {
|
|
|
2724 this->ident = ident;
|
|
|
2725 }
|
|
|
2726
|
|
|
2727 Statement *ContinueStatement::syntaxCopy()
|
|
|
2728 {
|
|
|
2729 ContinueStatement *s = new ContinueStatement(loc, ident);
|
|
|
2730 return s;
|
|
|
2731 }
|
|
|
2732
|
|
|
2733 Statement *ContinueStatement::semantic(Scope *sc)
|
|
|
2734 {
|
|
|
2735 //printf("ContinueStatement::semantic() %p\n", this);
|
|
|
2736 if (ident)
|
|
|
2737 {
|
|
|
2738 Scope *scx;
|
|
|
2739 FuncDeclaration *thisfunc = sc->func;
|
|
|
2740
|
|
|
2741 for (scx = sc; scx; scx = scx->enclosing)
|
|
|
2742 {
|
|
|
2743 LabelStatement *ls;
|
|
|
2744
|
|
|
2745 if (scx->func != thisfunc) // if in enclosing function
|
|
|
2746 {
|
|
|
2747 if (sc->fes) // if this is the body of a foreach
|
|
|
2748 {
|
|
|
2749 for (; scx; scx = scx->enclosing)
|
|
|
2750 {
|
|
|
2751 ls = scx->slabel;
|
|
|
2752 if (ls && ls->ident == ident && ls->statement == sc->fes)
|
|
|
2753 {
|
|
|
2754 // Replace continue ident; with return 0;
|
|
|
2755 return new ReturnStatement(0, new IntegerExp(0));
|
|
|
2756 }
|
|
|
2757 }
|
|
|
2758
|
|
|
2759 /* Post this statement to the fes, and replace
|
|
|
2760 * it with a return value that caller will put into
|
|
|
2761 * a switch. Caller will figure out where the break
|
|
|
2762 * label actually is.
|
|
|
2763 * Case numbers start with 2, not 0, as 0 is continue
|
|
|
2764 * and 1 is break.
|
|
|
2765 */
|
|
|
2766 Statement *s;
|
|
|
2767 sc->fes->cases.push(this);
|
|
|
2768 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1));
|
|
|
2769 return s;
|
|
|
2770 }
|
|
|
2771 break; // can't continue to it
|
|
|
2772 }
|
|
|
2773
|
|
|
2774 ls = scx->slabel;
|
|
|
2775 if (ls && ls->ident == ident)
|
|
|
2776 {
|
|
|
2777 Statement *s = ls->statement;
|
|
|
2778
|
|
|
2779 if (!s->hasContinue())
|
|
|
2780 error("label '%s' has no continue", ident->toChars());
|
|
|
2781 if (ls->tf != sc->tf)
|
|
|
2782 error("cannot continue out of finally block");
|
|
|
2783 return this;
|
|
|
2784 }
|
|
|
2785 }
|
|
|
2786 error("enclosing label '%s' for continue not found", ident->toChars());
|
|
|
2787 }
|
|
|
2788 else if (!sc->scontinue)
|
|
|
2789 {
|
|
|
2790 if (sc->fes)
|
|
|
2791 { Statement *s;
|
|
|
2792
|
|
|
2793 // Replace continue; with return 0;
|
|
|
2794 s = new ReturnStatement(0, new IntegerExp(0));
|
|
|
2795 return s;
|
|
|
2796 }
|
|
|
2797 error("continue is not inside a loop");
|
|
|
2798 }
|
|
|
2799 return this;
|
|
|
2800 }
|
|
|
2801
|
|
|
2802 int ContinueStatement::fallOffEnd()
|
|
|
2803 {
|
|
|
2804 return FALSE;
|
|
|
2805 }
|
|
|
2806
|
|
|
2807 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2808 {
|
|
|
2809 buf->writestring("continue");
|
|
|
2810 if (ident)
|
|
|
2811 { buf->writebyte(' ');
|
|
|
2812 buf->writestring(ident->toChars());
|
|
|
2813 }
|
|
|
2814 buf->writebyte(';');
|
|
|
2815 buf->writenl();
|
|
|
2816 }
|
|
|
2817
|
|
|
2818 /******************************** SynchronizedStatement ***************************/
|
|
|
2819
|
|
|
2820 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body)
|
|
|
2821 : Statement(loc)
|
|
|
2822 {
|
|
|
2823 this->exp = exp;
|
|
|
2824 this->body = body;
|
|
|
2825 this->esync = NULL;
|
|
|
2826 }
|
|
|
2827
|
|
|
2828 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body)
|
|
|
2829 : Statement(loc)
|
|
|
2830 {
|
|
|
2831 this->exp = NULL;
|
|
|
2832 this->body = body;
|
|
|
2833 this->esync = esync;
|
|
|
2834 }
|
|
|
2835
|
|
|
2836 Statement *SynchronizedStatement::syntaxCopy()
|
|
|
2837 {
|
|
|
2838 Expression *e = exp ? exp->syntaxCopy() : NULL;
|
|
|
2839 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL);
|
|
|
2840 return s;
|
|
|
2841 }
|
|
|
2842
|
|
|
2843 Statement *SynchronizedStatement::semantic(Scope *sc)
|
|
|
2844 {
|
|
|
2845 if (exp)
|
|
|
2846 { ClassDeclaration *cd;
|
|
|
2847
|
|
|
2848 exp = exp->semantic(sc);
|
|
|
2849 exp = resolveProperties(sc, exp);
|
|
|
2850 cd = exp->type->isClassHandle();
|
|
|
2851 if (!cd)
|
|
|
2852 error("can only synchronize on class objects, not '%s'", exp->type->toChars());
|
|
|
2853 else if (cd->isInterfaceDeclaration())
|
|
|
2854 { Type *t = new TypeIdentifier(0, Id::Object);
|
|
|
2855
|
|
|
2856 t = t->semantic(0, sc);
|
|
|
2857 exp = new CastExp(loc, exp, t);
|
|
|
2858 exp = exp->semantic(sc);
|
|
|
2859 }
|
|
|
2860 }
|
|
|
2861 if (body)
|
|
|
2862 body = body->semantic(sc);
|
|
|
2863 return this;
|
|
|
2864 }
|
|
|
2865
|
|
|
2866 int SynchronizedStatement::hasBreak()
|
|
|
2867 {
|
|
|
2868 return FALSE; //TRUE;
|
|
|
2869 }
|
|
|
2870
|
|
|
2871 int SynchronizedStatement::hasContinue()
|
|
|
2872 {
|
|
|
2873 return FALSE; //TRUE;
|
|
|
2874 }
|
|
|
2875
|
|
|
2876 int SynchronizedStatement::usesEH()
|
|
|
2877 {
|
|
|
2878 return TRUE;
|
|
|
2879 }
|
|
|
2880
|
|
|
2881 int SynchronizedStatement::fallOffEnd()
|
|
|
2882 {
|
|
|
2883 return body ? body->fallOffEnd() : TRUE;
|
|
|
2884 }
|
|
|
2885
|
|
|
2886 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2887 {
|
|
|
2888 buf->writestring("synchronized");
|
|
|
2889 if (exp)
|
|
|
2890 { buf->writebyte('(');
|
|
|
2891 exp->toCBuffer(buf, hgs);
|
|
|
2892 buf->writebyte(')');
|
|
|
2893 }
|
|
|
2894 if (body)
|
|
|
2895 {
|
|
|
2896 buf->writebyte(' ');
|
|
|
2897 body->toCBuffer(buf, hgs);
|
|
|
2898 }
|
|
|
2899 }
|
|
|
2900
|
|
|
2901 /******************************** WithStatement ***************************/
|
|
|
2902
|
|
|
2903 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body)
|
|
|
2904 : Statement(loc)
|
|
|
2905 {
|
|
|
2906 this->exp = exp;
|
|
|
2907 this->body = body;
|
|
|
2908 wthis = NULL;
|
|
|
2909 }
|
|
|
2910
|
|
|
2911 Statement *WithStatement::syntaxCopy()
|
|
|
2912 {
|
|
|
2913 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL);
|
|
|
2914 return s;
|
|
|
2915 }
|
|
|
2916
|
|
|
2917 Statement *WithStatement::semantic(Scope *sc)
|
|
|
2918 { ScopeDsymbol *sym;
|
|
|
2919 Initializer *init;
|
|
|
2920
|
|
|
2921 //printf("WithStatement::semantic()\n");
|
|
|
2922 exp = exp->semantic(sc);
|
|
|
2923 exp = resolveProperties(sc, exp);
|
|
|
2924 if (exp->op == TOKimport)
|
|
|
2925 { ScopeExp *es = (ScopeExp *)exp;
|
|
|
2926
|
|
|
2927 sym = es->sds;
|
|
|
2928 }
|
|
|
2929 else if (exp->op == TOKtype)
|
|
|
2930 { TypeExp *es = (TypeExp *)exp;
|
|
|
2931
|
|
|
2932 sym = es->type->toDsymbol(sc)->isScopeDsymbol();
|
|
|
2933 if (!sym)
|
|
|
2934 { error("%s has no members", es->toChars());
|
|
|
2935 body = body->semantic(sc);
|
|
|
2936 return this;
|
|
|
2937 }
|
|
|
2938 }
|
|
|
2939 else
|
|
|
2940 { Type *t = exp->type;
|
|
|
2941
|
|
|
2942 assert(t);
|
|
|
2943 t = t->toBasetype();
|
|
|
2944 if (t->isClassHandle())
|
|
|
2945 {
|
|
|
2946 init = new ExpInitializer(loc, exp);
|
|
|
2947 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init);
|
|
|
2948 wthis->semantic(sc);
|
|
|
2949
|
|
|
2950 sym = new WithScopeSymbol(this);
|
|
|
2951 sym->parent = sc->scopesym;
|
|
|
2952 }
|
|
|
2953 else if (t->ty == Tstruct)
|
|
|
2954 {
|
|
|
2955 Expression *e = exp->addressOf(sc);
|
|
|
2956 init = new ExpInitializer(loc, e);
|
|
|
2957 wthis = new VarDeclaration(loc, e->type, Id::withSym, init);
|
|
|
2958 wthis->semantic(sc);
|
|
|
2959 sym = new WithScopeSymbol(this);
|
|
|
2960 sym->parent = sc->scopesym;
|
|
|
2961 }
|
|
|
2962 else
|
|
|
2963 { error("with expressions must be class objects, not '%s'", exp->type->toChars());
|
|
|
2964 return NULL;
|
|
|
2965 }
|
|
|
2966 }
|
|
|
2967 sc = sc->push(sym);
|
|
|
2968
|
|
|
2969 if (body)
|
|
|
2970 body = body->semantic(sc);
|
|
|
2971
|
|
|
2972 sc->pop();
|
|
|
2973
|
|
|
2974 return this;
|
|
|
2975 }
|
|
|
2976
|
|
|
2977 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
2978 {
|
|
|
2979 buf->writestring("with (");
|
|
|
2980 exp->toCBuffer(buf, hgs);
|
|
|
2981 buf->writestring(")\n");
|
|
|
2982 if (body)
|
|
|
2983 body->toCBuffer(buf, hgs);
|
|
|
2984 }
|
|
|
2985
|
|
|
2986 int WithStatement::usesEH()
|
|
|
2987 {
|
|
|
2988 return body ? body->usesEH() : 0;
|
|
|
2989 }
|
|
|
2990
|
|
|
2991 int WithStatement::fallOffEnd()
|
|
|
2992 {
|
|
|
2993 return body ? body->fallOffEnd() : TRUE;
|
|
|
2994 }
|
|
|
2995
|
|
|
2996 /******************************** TryCatchStatement ***************************/
|
|
|
2997
|
|
|
2998 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches)
|
|
|
2999 : Statement(loc)
|
|
|
3000 {
|
|
|
3001 this->body = body;
|
|
|
3002 this->catches = catches;
|
|
|
3003 }
|
|
|
3004
|
|
|
3005 Statement *TryCatchStatement::syntaxCopy()
|
|
|
3006 {
|
|
|
3007 Array *a = new Array();
|
|
|
3008 a->setDim(catches->dim);
|
|
|
3009 for (int i = 0; i < a->dim; i++)
|
|
|
3010 { Catch *c;
|
|
|
3011
|
|
|
3012 c = (Catch *)catches->data[i];
|
|
|
3013 c = c->syntaxCopy();
|
|
|
3014 a->data[i] = c;
|
|
|
3015 }
|
|
|
3016 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a);
|
|
|
3017 return s;
|
|
|
3018 }
|
|
|
3019
|
|
|
3020 Statement *TryCatchStatement::semantic(Scope *sc)
|
|
|
3021 {
|
|
|
3022 body = body->semanticScope(sc, NULL /*this*/, NULL);
|
|
|
3023
|
|
|
3024 for (int i = 0; i < catches->dim; i++)
|
|
|
3025 { Catch *c;
|
|
|
3026
|
|
|
3027 c = (Catch *)catches->data[i];
|
|
|
3028 c->semantic(sc);
|
|
|
3029
|
|
|
3030 // Determine if current catch 'hides' any previous catches
|
|
|
3031 for (int j = 0; j < i; j++)
|
|
|
3032 { Catch *cj = (Catch *)catches->data[j];
|
|
|
3033 char *si = c->loc.toChars();
|
|
|
3034 char *sj = cj->loc.toChars();
|
|
|
3035
|
|
|
3036 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype()))
|
|
|
3037 error("catch at %s hides catch at %s", sj, si);
|
|
|
3038 }
|
|
|
3039 }
|
|
|
3040 return this;
|
|
|
3041 }
|
|
|
3042
|
|
|
3043 int TryCatchStatement::hasBreak()
|
|
|
3044 {
|
|
|
3045 return FALSE; //TRUE;
|
|
|
3046 }
|
|
|
3047
|
|
|
3048 int TryCatchStatement::usesEH()
|
|
|
3049 {
|
|
|
3050 return TRUE;
|
|
|
3051 }
|
|
|
3052
|
|
|
3053 int TryCatchStatement::fallOffEnd()
|
|
|
3054 {
|
|
|
3055 int result = FALSE;
|
|
|
3056
|
|
|
3057 if (body)
|
|
|
3058 result = body->fallOffEnd();
|
|
|
3059 for (int i = 0; i < catches->dim; i++)
|
|
|
3060 { Catch *c;
|
|
|
3061
|
|
|
3062 c = (Catch *)catches->data[i];
|
|
|
3063 if (c->handler)
|
|
|
3064 result |= c->handler->fallOffEnd();
|
|
|
3065 }
|
|
|
3066 return result;
|
|
|
3067 }
|
|
|
3068
|
|
|
3069 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3070 {
|
|
|
3071 buf->writestring("try");
|
|
|
3072 buf->writenl();
|
|
|
3073 if (body)
|
|
|
3074 body->toCBuffer(buf, hgs);
|
|
|
3075 int i;
|
|
|
3076 for (i = 0; i < catches->dim; i++)
|
|
|
3077 {
|
|
|
3078 Catch *c = (Catch *)catches->data[i];
|
|
|
3079 c->toCBuffer(buf, hgs);
|
|
|
3080 }
|
|
|
3081 }
|
|
|
3082
|
|
|
3083 /******************************** Catch ***************************/
|
|
|
3084
|
|
|
3085 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler)
|
|
|
3086 {
|
|
|
3087 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars());
|
|
|
3088 this->loc = loc;
|
|
|
3089 this->type = t;
|
|
|
3090 this->ident = id;
|
|
|
3091 this->handler = handler;
|
|
|
3092 var = NULL;
|
|
|
3093 }
|
|
|
3094
|
|
|
3095 Catch *Catch::syntaxCopy()
|
|
|
3096 {
|
|
|
3097 Catch *c = new Catch(loc,
|
|
|
3098 (type ? type->syntaxCopy() : NULL),
|
|
|
3099 ident,
|
|
|
3100 (handler ? handler->syntaxCopy() : NULL));
|
|
|
3101 return c;
|
|
|
3102 }
|
|
|
3103
|
|
|
3104 void Catch::semantic(Scope *sc)
|
|
|
3105 { ScopeDsymbol *sym;
|
|
|
3106
|
|
|
3107 //printf("Catch::semantic(%s)\n", ident->toChars());
|
|
|
3108
|
|
|
3109 #ifndef IN_GCC
|
|
|
3110 if (sc->tf)
|
|
|
3111 {
|
|
|
3112 /* This is because the _d_local_unwind() gets the stack munged
|
|
|
3113 * up on this. The workaround is to place any try-catches into
|
|
|
3114 * a separate function, and call that.
|
|
|
3115 * To fix, have the compiler automatically convert the finally
|
|
|
3116 * body into a nested function.
|
|
|
3117 */
|
|
|
3118 error(loc, "cannot put catch statement inside finally block");
|
|
|
3119 }
|
|
|
3120 #endif
|
|
|
3121
|
|
|
3122 sym = new ScopeDsymbol();
|
|
|
3123 sym->parent = sc->scopesym;
|
|
|
3124 sc = sc->push(sym);
|
|
|
3125
|
|
|
3126 if (!type)
|
|
|
3127 type = new TypeIdentifier(0, Id::Object);
|
|
|
3128 type = type->semantic(loc, sc);
|
|
|
3129 if (!type->toBasetype()->isClassHandle())
|
|
|
3130 error("can only catch class objects, not '%s'", type->toChars());
|
|
|
3131 else if (ident)
|
|
|
3132 {
|
|
|
3133 var = new VarDeclaration(loc, type, ident, NULL);
|
|
|
3134 var->parent = sc->parent;
|
|
|
3135 sc->insert(var);
|
|
|
3136 }
|
|
|
3137 handler = handler->semantic(sc);
|
|
|
3138
|
|
|
3139 sc->pop();
|
|
|
3140 }
|
|
|
3141
|
|
|
3142 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3143 {
|
|
|
3144 buf->writestring("catch");
|
|
|
3145 if (type)
|
|
|
3146 { buf->writebyte('(');
|
|
|
3147 type->toCBuffer(buf, ident, hgs);
|
|
|
3148 buf->writebyte(')');
|
|
|
3149 }
|
|
|
3150 buf->writenl();
|
|
|
3151 buf->writebyte('{');
|
|
|
3152 buf->writenl();
|
|
|
3153 handler->toCBuffer(buf, hgs);
|
|
|
3154 buf->writebyte('}');
|
|
|
3155 buf->writenl();
|
|
|
3156 }
|
|
|
3157
|
|
|
3158 /****************************** TryFinallyStatement ***************************/
|
|
|
3159
|
|
|
3160 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody)
|
|
|
3161 : Statement(loc)
|
|
|
3162 {
|
|
|
3163 this->body = body;
|
|
|
3164 this->finalbody = finalbody;
|
|
|
3165 }
|
|
|
3166
|
|
|
3167 Statement *TryFinallyStatement::syntaxCopy()
|
|
|
3168 {
|
|
|
3169 TryFinallyStatement *s = new TryFinallyStatement(loc,
|
|
|
3170 body->syntaxCopy(), finalbody->syntaxCopy());
|
|
|
3171 return s;
|
|
|
3172 }
|
|
|
3173
|
|
|
3174 Statement *TryFinallyStatement::semantic(Scope *sc)
|
|
|
3175 {
|
|
|
3176 //printf("TryFinallyStatement::semantic()\n");
|
|
|
3177 body = body->semantic(sc);
|
|
|
3178 sc = sc->push();
|
|
|
3179 sc->tf = this;
|
|
|
3180 sc->sbreak = NULL;
|
|
|
3181 sc->scontinue = NULL; // no break or continue out of finally block
|
|
|
3182 finalbody = finalbody->semantic(sc);
|
|
|
3183 sc->pop();
|
|
|
3184 return this;
|
|
|
3185 }
|
|
|
3186
|
|
|
3187 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3188 {
|
|
|
3189 buf->printf("try\n{\n");
|
|
|
3190 body->toCBuffer(buf, hgs);
|
|
|
3191 buf->printf("}\nfinally\n{\n");
|
|
|
3192 finalbody->toCBuffer(buf, hgs);
|
|
|
3193 buf->writeByte('}');
|
|
|
3194 buf->writenl();
|
|
|
3195 }
|
|
|
3196
|
|
|
3197 int TryFinallyStatement::hasBreak()
|
|
|
3198 {
|
|
|
3199 return FALSE; //TRUE;
|
|
|
3200 }
|
|
|
3201
|
|
|
3202 int TryFinallyStatement::hasContinue()
|
|
|
3203 {
|
|
|
3204 return FALSE; //TRUE;
|
|
|
3205 }
|
|
|
3206
|
|
|
3207 int TryFinallyStatement::usesEH()
|
|
|
3208 {
|
|
|
3209 return TRUE;
|
|
|
3210 }
|
|
|
3211
|
|
|
3212 int TryFinallyStatement::fallOffEnd()
|
|
|
3213 { int result;
|
|
|
3214
|
|
|
3215 result = body->fallOffEnd();
|
|
|
3216 // if (finalbody)
|
|
|
3217 // result = finalbody->fallOffEnd();
|
|
|
3218 return result;
|
|
|
3219 }
|
|
|
3220
|
|
|
3221 /****************************** OnScopeStatement ***************************/
|
|
|
3222
|
|
|
3223 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement)
|
|
|
3224 : Statement(loc)
|
|
|
3225 {
|
|
|
3226 this->tok = tok;
|
|
|
3227 this->statement = statement;
|
|
|
3228 }
|
|
|
3229
|
|
|
3230 Statement *OnScopeStatement::syntaxCopy()
|
|
|
3231 {
|
|
|
3232 OnScopeStatement *s = new OnScopeStatement(loc,
|
|
|
3233 tok, statement->syntaxCopy());
|
|
|
3234 return s;
|
|
|
3235 }
|
|
|
3236
|
|
|
3237 Statement *OnScopeStatement::semantic(Scope *sc)
|
|
|
3238 {
|
|
|
3239 /* semantic is called on results of scopeCode() */
|
|
|
3240 return this;
|
|
|
3241 }
|
|
|
3242
|
|
|
3243 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3244 {
|
|
|
3245 buf->writestring(Token::toChars(tok));
|
|
|
3246 buf->writebyte(' ');
|
|
|
3247 statement->toCBuffer(buf, hgs);
|
|
|
3248 }
|
|
|
3249
|
|
|
3250 int OnScopeStatement::usesEH()
|
|
|
3251 {
|
|
|
3252 return (tok != TOKon_scope_success);
|
|
|
3253 }
|
|
|
3254
|
|
|
3255 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally)
|
|
|
3256 {
|
|
|
3257 //printf("OnScopeStatement::scopeCode()\n");
|
|
|
3258 //print();
|
|
|
3259 *sentry = NULL;
|
|
|
3260 *sexception = NULL;
|
|
|
3261 *sfinally = NULL;
|
|
|
3262 switch (tok)
|
|
|
3263 {
|
|
|
3264 case TOKon_scope_exit:
|
|
|
3265 *sfinally = statement;
|
|
|
3266 break;
|
|
|
3267
|
|
|
3268 case TOKon_scope_failure:
|
|
|
3269 *sexception = statement;
|
|
|
3270 break;
|
|
|
3271
|
|
|
3272 case TOKon_scope_success:
|
|
|
3273 {
|
|
|
3274 /* Create:
|
|
|
3275 * sentry: int x = 0;
|
|
|
3276 * sexception: x = 1;
|
|
|
3277 * sfinally: if (!x) statement;
|
|
|
3278 */
|
|
|
3279 static int num;
|
|
|
3280 char name[5 + sizeof(num) * 3 + 1];
|
|
|
3281 sprintf(name, "__osf%d", ++num);
|
|
|
3282 Identifier *id = Lexer::idPool(name);
|
|
|
3283
|
|
|
3284 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0));
|
|
|
3285 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie);
|
|
|
3286 *sentry = new DeclarationStatement(loc, v);
|
|
|
3287
|
|
|
3288 Expression *e = new IntegerExp(1);
|
|
|
3289 e = new AssignExp(0, new VarExp(0, v), e);
|
|
|
3290 *sexception = new ExpStatement(0, e);
|
|
|
3291
|
|
|
3292 e = new VarExp(0, v);
|
|
|
3293 e = new NotExp(0, e);
|
|
|
3294 *sfinally = new IfStatement(0, NULL, e, statement, NULL);
|
|
|
3295
|
|
|
3296 break;
|
|
|
3297 }
|
|
|
3298
|
|
|
3299 default:
|
|
|
3300 assert(0);
|
|
|
3301 }
|
|
|
3302 }
|
|
|
3303
|
|
|
3304 /******************************** ThrowStatement ***************************/
|
|
|
3305
|
|
|
3306 ThrowStatement::ThrowStatement(Loc loc, Expression *exp)
|
|
|
3307 : Statement(loc)
|
|
|
3308 {
|
|
|
3309 this->exp = exp;
|
|
|
3310 }
|
|
|
3311
|
|
|
3312 Statement *ThrowStatement::syntaxCopy()
|
|
|
3313 {
|
|
|
3314 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy());
|
|
|
3315 return s;
|
|
|
3316 }
|
|
|
3317
|
|
|
3318 Statement *ThrowStatement::semantic(Scope *sc)
|
|
|
3319 {
|
|
|
3320 //printf("ThrowStatement::semantic()\n");
|
|
|
3321
|
|
|
3322 FuncDeclaration *fd = sc->parent->isFuncDeclaration();
|
|
|
3323 fd->hasReturnExp |= 2;
|
|
|
3324
|
|
|
3325 if (sc->incontract)
|
|
|
3326 error("Throw statements cannot be in contracts");
|
|
|
3327 exp = exp->semantic(sc);
|
|
|
3328 exp = resolveProperties(sc, exp);
|
|
|
3329 if (!exp->type->toBasetype()->isClassHandle())
|
|
|
3330 error("can only throw class objects, not type %s", exp->type->toChars());
|
|
|
3331 return this;
|
|
|
3332 }
|
|
|
3333
|
|
|
3334 int ThrowStatement::fallOffEnd()
|
|
|
3335 {
|
|
|
3336 return FALSE;
|
|
|
3337 }
|
|
|
3338
|
|
|
3339 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3340 {
|
|
|
3341 buf->printf("throw ");
|
|
|
3342 exp->toCBuffer(buf, hgs);
|
|
|
3343 buf->writeByte(';');
|
|
|
3344 buf->writenl();
|
|
|
3345 }
|
|
|
3346
|
|
|
3347 /******************************** VolatileStatement **************************/
|
|
|
3348
|
|
|
3349 VolatileStatement::VolatileStatement(Loc loc, Statement *statement)
|
|
|
3350 : Statement(loc)
|
|
|
3351 {
|
|
|
3352 this->statement = statement;
|
|
|
3353 }
|
|
|
3354
|
|
|
3355 Statement *VolatileStatement::syntaxCopy()
|
|
|
3356 {
|
|
|
3357 VolatileStatement *s = new VolatileStatement(loc,
|
|
|
3358 statement ? statement->syntaxCopy() : NULL);
|
|
|
3359 return s;
|
|
|
3360 }
|
|
|
3361
|
|
|
3362 Statement *VolatileStatement::semantic(Scope *sc)
|
|
|
3363 {
|
|
|
3364 statement = statement ? statement->semantic(sc) : NULL;
|
|
|
3365 return this;
|
|
|
3366 }
|
|
|
3367
|
|
|
3368 Statements *VolatileStatement::flatten(Scope *sc)
|
|
|
3369 {
|
|
|
3370 Statements *a;
|
|
|
3371
|
|
|
3372 a = statement ? statement->flatten(sc) : NULL;
|
|
|
3373 if (a)
|
|
|
3374 { for (int i = 0; i < a->dim; i++)
|
|
|
3375 { Statement *s = (Statement *)a->data[i];
|
|
|
3376
|
|
|
3377 s = new VolatileStatement(loc, s);
|
|
|
3378 a->data[i] = s;
|
|
|
3379 }
|
|
|
3380 }
|
|
|
3381
|
|
|
3382 return a;
|
|
|
3383 }
|
|
|
3384
|
|
|
3385 int VolatileStatement::fallOffEnd()
|
|
|
3386 {
|
|
|
3387 return statement ? statement->fallOffEnd() : TRUE;
|
|
|
3388 }
|
|
|
3389
|
|
|
3390 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3391 {
|
|
|
3392 buf->writestring("volatile");
|
|
|
3393 if (statement)
|
|
|
3394 { if (statement->isScopeStatement())
|
|
|
3395 buf->writenl();
|
|
|
3396 else
|
|
|
3397 buf->writebyte(' ');
|
|
|
3398 statement->toCBuffer(buf, hgs);
|
|
|
3399 }
|
|
|
3400 }
|
|
|
3401
|
|
|
3402
|
|
|
3403 /******************************** GotoStatement ***************************/
|
|
|
3404
|
|
|
3405 GotoStatement::GotoStatement(Loc loc, Identifier *ident)
|
|
|
3406 : Statement(loc)
|
|
|
3407 {
|
|
|
3408 this->ident = ident;
|
|
|
3409 this->label = NULL;
|
|
|
3410 this->tf = NULL;
|
|
|
3411 }
|
|
|
3412
|
|
|
3413 Statement *GotoStatement::syntaxCopy()
|
|
|
3414 {
|
|
|
3415 GotoStatement *s = new GotoStatement(loc, ident);
|
|
|
3416 return s;
|
|
|
3417 }
|
|
|
3418
|
|
|
3419 Statement *GotoStatement::semantic(Scope *sc)
|
|
|
3420 { FuncDeclaration *fd = sc->parent->isFuncDeclaration();
|
|
|
3421
|
|
|
3422 //printf("GotoStatement::semantic()\n");
|
|
|
3423 tf = sc->tf;
|
|
|
3424 label = fd->searchLabel(ident);
|
|
|
3425 if (!label->statement && sc->fes)
|
|
|
3426 {
|
|
|
3427 /* Either the goto label is forward referenced or it
|
|
|
3428 * is in the function that the enclosing foreach is in.
|
|
|
3429 * Can't know yet, so wrap the goto in a compound statement
|
|
|
3430 * so we can patch it later, and add it to a 'look at this later'
|
|
|
3431 * list.
|
|
|
3432 */
|
|
|
3433 Statements *a = new Statements();
|
|
|
3434 Statement *s;
|
|
|
3435
|
|
|
3436 a->push(this);
|
|
|
3437 s = new CompoundStatement(loc, a);
|
|
|
3438 sc->fes->gotos.push(s); // 'look at this later' list
|
|
|
3439 return s;
|
|
|
3440 }
|
|
|
3441 if (label->statement && label->statement->tf != sc->tf)
|
|
|
3442 error("cannot goto in or out of finally block");
|
|
|
3443 return this;
|
|
|
3444 }
|
|
|
3445
|
|
|
3446 int GotoStatement::fallOffEnd()
|
|
|
3447 {
|
|
|
3448 return FALSE;
|
|
|
3449 }
|
|
|
3450
|
|
|
3451 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3452 {
|
|
|
3453 buf->writestring("goto ");
|
|
|
3454 buf->writestring(ident->toChars());
|
|
|
3455 buf->writebyte(';');
|
|
|
3456 buf->writenl();
|
|
|
3457 }
|
|
|
3458
|
|
|
3459 /******************************** LabelStatement ***************************/
|
|
|
3460
|
|
|
3461 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement)
|
|
|
3462 : Statement(loc)
|
|
|
3463 {
|
|
|
3464 this->ident = ident;
|
|
|
3465 this->statement = statement;
|
|
|
3466 this->tf = NULL;
|
|
|
3467 this->lblock = NULL;
|
|
|
3468 this->isReturnLabel = 0;
|
|
|
3469 }
|
|
|
3470
|
|
|
3471 Statement *LabelStatement::syntaxCopy()
|
|
|
3472 {
|
|
|
3473 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy());
|
|
|
3474 return s;
|
|
|
3475 }
|
|
|
3476
|
|
|
3477 Statement *LabelStatement::semantic(Scope *sc)
|
|
|
3478 { LabelDsymbol *ls;
|
|
|
3479 FuncDeclaration *fd = sc->parent->isFuncDeclaration();
|
|
|
3480
|
|
|
3481 //printf("LabelStatement::semantic()\n");
|
|
|
3482 ls = fd->searchLabel(ident);
|
|
|
3483 if (ls->statement)
|
|
|
3484 error("Label '%s' already defined", ls->toChars());
|
|
|
3485 else
|
|
|
3486 ls->statement = this;
|
|
|
3487 tf = sc->tf;
|
|
|
3488 sc = sc->push();
|
|
|
3489 sc->scopesym = sc->enclosing->scopesym;
|
|
|
3490 sc->callSuper |= CSXlabel;
|
|
|
3491 sc->slabel = this;
|
|
|
3492 if (statement)
|
|
|
3493 statement = statement->semantic(sc);
|
|
|
3494 sc->pop();
|
|
|
3495 return this;
|
|
|
3496 }
|
|
|
3497
|
|
|
3498 Statements *LabelStatement::flatten(Scope *sc)
|
|
|
3499 {
|
|
|
3500 Statements *a = NULL;
|
|
|
3501
|
|
|
3502 if (statement)
|
|
|
3503 {
|
|
|
3504 a = statement->flatten(sc);
|
|
|
3505 if (a)
|
|
|
3506 {
|
|
|
3507 if (!a->dim)
|
|
|
3508 {
|
|
|
3509 a->push(new ExpStatement(loc, NULL));
|
|
|
3510 }
|
|
|
3511 Statement *s = (Statement *)a->data[0];
|
|
|
3512
|
|
|
3513 s = new LabelStatement(loc, ident, s);
|
|
|
3514 a->data[0] = s;
|
|
|
3515 }
|
|
|
3516 }
|
|
|
3517
|
|
|
3518 return a;
|
|
|
3519 }
|
|
|
3520
|
|
|
3521
|
|
|
3522 int LabelStatement::usesEH()
|
|
|
3523 {
|
|
|
3524 return statement ? statement->usesEH() : FALSE;
|
|
|
3525 }
|
|
|
3526
|
|
|
3527 int LabelStatement::fallOffEnd()
|
|
|
3528 {
|
|
|
3529 return statement ? statement->fallOffEnd() : TRUE;
|
|
|
3530 }
|
|
|
3531
|
|
|
3532 int LabelStatement::comeFrom()
|
|
|
3533 {
|
|
|
3534 //printf("LabelStatement::comeFrom()\n");
|
|
|
3535 return TRUE;
|
|
|
3536 }
|
|
|
3537
|
|
|
3538 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
3539 {
|
|
|
3540 buf->writestring(ident->toChars());
|
|
|
3541 buf->writebyte(':');
|
|
|
3542 buf->writenl();
|
|
|
3543 if (statement)
|
|
|
3544 statement->toCBuffer(buf, hgs);
|
|
|
3545 }
|
|
|
3546
|
|
|
3547
|
|
|
3548 /******************************** LabelDsymbol ***************************/
|
|
|
3549
|
|
|
3550 LabelDsymbol::LabelDsymbol(Identifier *ident)
|
|
|
3551 : Dsymbol(ident)
|
|
|
3552 {
|
|
|
3553 statement = NULL;
|
|
|
3554 #if IN_GCC
|
|
|
3555 asmLabelNum = 0;
|
|
|
3556 #endif
|
|
|
3557 }
|
|
|
3558
|
|
|
3559 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()?
|
|
|
3560 {
|
|
|
3561 return this;
|
|
|
3562 }
|
|
|
3563
|
|
|
3564
|
