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1 module dmd.Statement;
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2
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3 import dmd.TryCatchStatement;
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4 import dmd.GotoStatement;
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5 import dmd.AsmStatement;
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6 import dmd.ScopeStatement;
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7 import dmd.DeclarationStatement;
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8 import dmd.CompoundStatement;
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9 import dmd.ReturnStatement;
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10 import dmd.IfStatement;
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11 import dmd.Scope;
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12 import dmd.Loc;
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13 import dmd.OutBuffer;
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14 import dmd.HdrGenState;
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15 import dmd.ArrayTypes;
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16 import dmd.Expression;
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17 import dmd.InterState;
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18 import dmd.InlineCostState;
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19 import dmd.InlineDoState;
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20 import dmd.InlineScanState;
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21 import dmd.IRState;
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22 import dmd.BE;
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23 import dmd.Global;
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24 import dmd.Util;
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25
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26 class Statement
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27 {
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28 Loc loc;
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29
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30 this(Loc loc)
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31 {
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32 this.loc = loc;
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33 }
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34
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35 Statement syntaxCopy()
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36 {
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37 assert(false);
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38 }
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39
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40 void print()
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41 {
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42 assert(false);
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43 }
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44
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45 string toChars()
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46 {
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47 assert(false);
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48 }
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49
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50 void error(T...)(string format, T t)
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51 {
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58
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52 .error(loc, format, t);
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0
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53 }
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54
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55 void warning(T...)(string format, T t)
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56 {
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57 if (global.params.warnings && !global.gag)
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58 {
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59 writef("warning - ");
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60 .error(loc, format, t);
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61 }
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62 }
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63
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64 void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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65 {
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66 assert(false);
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67 }
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68
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69 TryCatchStatement isTryCatchStatement() { return null; }
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70
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71 GotoStatement isGotoStatement() { return null; }
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72
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73 AsmStatement isAsmStatement() { return null; }
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74
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75 version (_DH) {
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76 int incontract;
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77 }
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78 ScopeStatement isScopeStatement() { return null; }
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79
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80 Statement semantic(Scope sc)
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81 {
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82 assert(false);
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83 }
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84
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85 Statement semanticScope(Scope sc, Statement sbreak, Statement scontinue)
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86 {
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87 Scope scd;
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88 Statement s;
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89
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90 scd = sc.push();
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91 if (sbreak)
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92 scd.sbreak = sbreak;
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93 if (scontinue)
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94 scd.scontinue = scontinue;
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95 s = semantic(scd);
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96 scd.pop();
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97 return s;
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98 }
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99
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100 bool hasBreak()
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101 {
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102 assert(false);
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103 }
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104
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105 bool hasContinue()
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106 {
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107 assert(false);
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108 }
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109
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110 bool usesEH()
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111 {
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112 assert(false);
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113 }
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114
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115 BE blockExit()
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116 {
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117 assert(false);
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118 }
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119
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120 // true if statement 'comes from' somewhere else, like a goto
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121 bool comeFrom()
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122 {
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123 //printf("Statement::comeFrom()\n");
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124 return false;
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125 }
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126
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127 // Return TRUE if statement has no code in it
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128 bool isEmpty()
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129 {
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130 //printf("Statement::isEmpty()\n");
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131 return false;
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132 }
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133
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134 /****************************************
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135 * If this statement has code that needs to run in a finally clause
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136 * at the end of the current scope, return that code in the form of
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137 * a Statement.
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138 * Output:
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139 * *sentry code executed upon entry to the scope
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140 * *sexception code executed upon exit from the scope via exception
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141 * *sfinally code executed in finally block
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142 */
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143 void scopeCode(Scope sc, Statement* sentry, Statement* sexception, Statement* sfinally)
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144 {
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145 //printf("Statement::scopeCode()\n");
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146 //print();
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147 *sentry = null;
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148 *sexception = null;
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149 *sfinally = null;
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150 }
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151
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152 /*********************************
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153 * Flatten out the scope by presenting the statement
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154 * as an array of statements.
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155 * Returns NULL if no flattening necessary.
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156 */
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157 Statements flatten(Scope sc)
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158 {
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159 return null;
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160 }
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161
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162 Expression interpret(InterState* istate)
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163 {
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164 assert(false);
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165 }
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166
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167 int inlineCost(InlineCostState* ics)
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168 {
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169 return COST_MAX; // default is we can't inline it
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170 }
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171
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172 Expression doInline(InlineDoState ids)
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173 {
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174 assert(false);
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175 }
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176
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177 Statement inlineScan(InlineScanState* iss)
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178 {
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179 return this;
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180 }
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181
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182 // Back end
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183 void toIR(IRState* irs)
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184 {
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185 assert(false);
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186 }
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187
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188 // Avoid dynamic_cast
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189 DeclarationStatement isDeclarationStatement() { return null; }
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190 CompoundStatement isCompoundStatement() { return null; }
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191 ReturnStatement isReturnStatement() { return null; }
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192 IfStatement isIfStatement() { return null; }
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193 } |
