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annotate tools/AstPrinter.d @ 94:48bb2287c035 new_gen

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Added Modules. Right now it's very simple - will grow with time and need.
author Anders Johnsen <skabet@gmail.com>
date Tue, 06 May 2008 16:24:14 +0200
parents eb5b2c719a39
children fea8d61a2451
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 module tools.AstPrinter;
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2
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3 import tango.io.Stdout;
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4
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5 import ast.Module,
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6 ast.Decl,
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7 ast.Stmt,
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8 ast.Exp;
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9
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10 import basic.SourceManager;
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11
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12 class AstPrinter
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13 {
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14 const char[] tabType = " "; // 4 spaces
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15
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16 this(SourceManager sm)
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17 {
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18
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19 this.sm = sm;
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20 }
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21
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22 void print(Module m)
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23 {
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24 foreach(decl ; m.decls)
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25 {
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26 printDecl(decl);
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27 }
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28 }
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29
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30 void printDecl(Decl decl)
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31 {
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32 switch(decl.declType)
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33 {
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34 case DeclType.FuncDecl:
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35 auto funcDecl = cast(FuncDecl)decl;
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36 printBeginLine();
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37 printIdentifier(funcDecl.returnType);
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38 space;
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39 printIdentifier(funcDecl.identifier);
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40 printFuncArgs(funcDecl);
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41 printOpenBrace();
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42 foreach(stmt ; funcDecl.statements)
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43 printStatement(stmt);
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44 printCloseBrace();
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45 break;
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46
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47 case DeclType.VarDecl:
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48 auto varDecl = cast(VarDecl)decl;
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49 printBeginLine();
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50 printExp(varDecl.varType);
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51 space;
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52 printExp(varDecl.identifier);
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53 if(varDecl.init)
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54 {
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55 print(" = ");
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56 printExp(varDecl.init);
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57 }
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58 printEndLine(";");
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59 break;
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60
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61 case DeclType.StructDecl:
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62 auto structDecl = cast(StructDecl)decl;
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63 printBeginLine("struct ");
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64 printIdentifier(structDecl.identifier);
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65 printEndLine;
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66 printOpenBrace;
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67 foreach( var ; structDecl.vars)
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68 printDecl(var);
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69 printCloseBrace;
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70 break;
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71 }
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72 }
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73
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74 void printStatement(Stmt stmt)
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75 {
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76 switch(stmt.stmtType)
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77 {
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78 case StmtType.Return:
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79 auto ret = cast(ReturnStmt)stmt;
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80 printBeginLine("return");
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81 if(ret.exp)
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82 {
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83 space;
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84 printExp(ret.exp);
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85 }
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86 printEndLine(";");
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87 break;
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88 case StmtType.Decl:
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89 auto declStmt = cast(DeclStmt)stmt;
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90 printDecl(declStmt.decl);
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91 break;
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92 case StmtType.Exp:
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93 auto expStmt = cast(ExpStmt)stmt;
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94 printBeginLine();
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95 printExp(expStmt.exp);
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96 printEndLine(";");
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97 break;
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98
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99 }
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100 }
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101
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102 void printExp(Exp exp)
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103 {
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104 switch(exp.expType)
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105 {
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106 case ExpType.Binary:
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107 auto binaryExp = cast(BinaryExp)exp;
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108 print("(");
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109 printExp(binaryExp.left);
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110 print(" " ~ binaryExp.getOp[binaryExp.op] ~ " ");
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111 printExp(binaryExp.right);
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112 print(")");
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113 break;
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114 case ExpType.IntegerLit:
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115 auto integetLit = cast(IntegerLit)exp;
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116 print(integetLit.get);
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117 break;
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118 case ExpType.Negate:
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119 auto negateExp = cast(NegateExp)exp;
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120 print("-");
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121 printExp(negateExp.exp);
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122 break;
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123 case ExpType.Deref:
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124 auto derefExp = cast(DerefExp)exp;
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125 print("*");
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126 printExp(derefExp.exp);
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127 break;
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128 case ExpType.AssignExp:
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129 auto assignExp = cast(AssignExp)exp;
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69464d465284 Now supporting structs - both read and write. Still a few errors though, so watch out.
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130 printExp(assignExp.identifier);
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131 print(" = ");
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132 printExp(assignExp.exp);
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133 break;
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134 case ExpType.MemberReference:
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135 auto mrExp = cast(MemberReference)exp;
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136 printExp(mrExp.target);
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137 print(".");
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138 printIdentifier(mrExp.child);
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139 break;
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140 case ExpType.Identifier:
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141 auto iden = cast(Identifier)exp;
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142 printIdentifier(iden);
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143 break;
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144 case ExpType.PointerIdentifier:
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145 auto iden = cast(PointerIdentifier)exp;
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146 printExp(iden.pointerOf);
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147 print("*");
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148 break;
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149 case ExpType.CallExp:
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150 auto callExp = cast(CallExp)exp;
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151 printExp(callExp.exp);
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152 print("(");
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153 foreach(i, e; callExp.args)
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154 {
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155 printExp(e);
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156 if(i+1 < callExp.args.length)
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157 print(", ");
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158 }
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159 print(")");
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160 break;
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381975d76baf A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
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161 case ExpType.CastExp:
381975d76baf A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
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162 auto castExp = cast(CastExp)exp;
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163 print("cast");
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164 print("(");
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165 printExp(castExp.castType);
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166 print(")");
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167 printExp(castExp.exp);
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168 break;
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169 }
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170
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171 }
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172
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173 void printFuncArgs(FuncDecl decl)
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174 {
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175 print("(");
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176
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177 foreach(i, d; decl.funcArgs)
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178 {
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9f8131676242 Now Decl's have a DType type(), and should use varType and returnType to get the old type id
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179 printIdentifier(d.varType);
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180 if(i == 0 && decl.sret)
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181 print("*");
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182 space;
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183 printIdentifier(d.identifier);
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184 if(i+1 < decl.funcArgs.length)
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185 print(",");
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186 }
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187
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188 printEndLine(")");
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189 }
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190
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191 void printIdentifier(Identifier identifier)
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192 {
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193 print(identifier.get);
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194 }
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195
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196 void printOpenBrace()
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197 {
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198 printEndLine(tabIndex~"{");
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199 tabIndex ~= tabType;
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200 }
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201
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202 void printCloseBrace()
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203 {
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204 tabIndex = tabIndex[0 .. $-tabType.length];
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205 printEndLine(tabIndex~"}");
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206 }
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207
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208 void printBeginLine(char[] line = "")
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209 {
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210 Stdout(tabIndex~line);
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211 }
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212
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213 void printEndLine(char[] line = "")
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214 {
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215 Stdout(line).newline;
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216 }
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217
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218 void print(char[] line)
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219 {
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220 Stdout(line);
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221 }
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222
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223 void space()
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224 {
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225 print(" ");
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226 }
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227 private:
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eb5b2c719a39 Major change to locations, tokens and expressions.
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228 SourceManager sm;
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229 char[] tabIndex;
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230 }