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annotate parser/Action.d @ 185:7b274cfdc1dc

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Added support for array literals. Codegen is broken, though.
author Anders Johnsen <skabet@gmail.com>
date Fri, 25 Jul 2008 12:18:05 +0200
parents 01c2c49775ef
children 08f68d684047
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1 module parser.Action;
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2
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3 import lexer.Token;
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4
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5 import basic.Attribute;
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6
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7 /**
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8 Used to indicate what type of operator is used in a given binary expression
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9 (and unary expressions?)
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10 */
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11 public enum Operator
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12 {
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13 Assign,
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14 AddAssign,
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15 SubAssign,
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16 MulAssign,
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17 DivAssign,
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18 ModAssign,
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19
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20 Eq, Ne,
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22 Lt, Le,
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23 Gt, Ge,
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24
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25 Add, Sub,
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26 Mul, Div, Mod,
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27
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28 LeftShift, RightShift, UnsignedRightShift,
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29 }
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32 class Id
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33 {
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34 public static Id opCall(Token tok)
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35 {
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36 auto id = new Id();
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37 id.tok = tok;
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38 return id;
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39 }
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40 Token tok;
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41 }
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43 class PointerTypeId : Id
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44 {
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45 public static PointerTypeId opCall(Id id)
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46 {
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47 auto p = new PointerTypeId();
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48 p.id = id;
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49 return p;
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50 }
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51
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52 Id id;
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53 }
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55 class StaticArrayTypeId : Id
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56 {
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57 public static StaticArrayTypeId opCall(Id id, Object number)
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58 {
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59 auto a = new StaticArrayTypeId();
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60 a.id = id;
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61 a.number = number;
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62 return a;
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63 }
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64
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65 Id id;
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66 Object number;
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67 }
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69 class FunctionTypeId : Id
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70 {
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71 public static FunctionTypeId opCall(Id id, DeclT[] decls)
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72 {
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73 auto f = new FunctionTypeId();
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74 f.id = id;
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75 f.decls = decls;
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76 return f;
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77 }
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78
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79 Id id;
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80 DeclT[] decls;
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81 }
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82
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83 /**
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84 Represents a fully qualified name, with some packages and a final identifier.
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85 The identifier should always be set, but packages may have length 0.
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86 **/
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87 struct ModuleName
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88 {
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89 Id id;
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90 Id[] packages;
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91
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92 /// Get the full ranged spanned by packages and identifier
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93 SourceRange asRange()
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94 {
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95 SourceRange r = id.tok.asRange();
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96 foreach (identifier; packages)
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97 r = r + identifier.tok.asRange();
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98 return r;
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99 }
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100 }
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101
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102 /**
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103 A few aliases to indicate what methods should be dealing with the same
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104 types.
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105 Not typesafe, and not using typedef because users would need a lot of
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106 casts (and base type would be void*, so no possibility to synchronize,
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107 print etc.)
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108 */
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109 alias Object ExprT;
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110 alias Object StmtT; /// ditto
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111 alias Object DeclT; /// ditto
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112 alias Object ModuleT; /// ditto
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113
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114 /**
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115 All methods are optional.
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116
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117 Warning: Interface is not stable yet. Use the `override` keyword in all classes
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118 inheriting from this to get warning if the interface changes.
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119 */
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120 abstract class Action
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121 {
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122
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123
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124 // -- Modules --
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125
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126 ModuleT actOnModule(ref Token _module, char[] name)
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127 {
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128 return null;
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129 }
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130
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131 /**
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132 This action is called when a file does not start with a module
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133 declaration - in which case there is no Token available.
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134
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135 Instead a SLoc to the start of the file is given.
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136 */
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137 ModuleT actOnImplicitModule(SourceLocation fileStart, char[] name)
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138 {
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139 return null;
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140 }
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141
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142 void actOnModuleDecl(ModuleT m, DeclT d)
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143 {
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144 }
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145
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146 // -- Declarations --
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147
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148 /**
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149 Called for an import statement, that may be renamed. Id name is null,
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150 there is no rename.
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151
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152 If there are selective imports, its handled in add
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153 */
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154 DeclT actOnImport(ref Token _import, ref ModuleName target, Id* name)
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155 {
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156 return null;
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157 }
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158
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159 /**
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160 */
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161 void addSelectiveImport(DeclT _import, ref Id target, Id* name)
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162 {
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163 }
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164
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165 /**
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166 Either we should have one case that handles a lot of things, or we should
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167 have a lot of separate cases.
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168 As an example, this method could handle the params in `int f(int, int)`
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169 as well as handling `int x` at both top-level, in classes and in methods.
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170
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171 The other solution is an addParamToFunc or similar.
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172 */
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173 DeclT actOnDeclarator(ref Id type, ref Id name, ExprT init, Attribute att)
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174 {
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175 return null;
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176 }
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177
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178 /**
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179 Add a struct member to a struct.
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180 */
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181 void actOnStructMember(DeclT st_decl, DeclT m_decl)
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182 {
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183 return null;
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184 }
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185
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186 /**
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187 Add a class member to a struct.
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188 */
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189 void actOnClassMember(DeclT cl_decl, DeclT m_decl)
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190 {
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191 return null;
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192 }
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193
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194 /**
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195 Add a class member to a struct.
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196 */
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197 void actOnClassBaseClass(DeclT cl_decl, ref Id name)
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198 {
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199 return null;
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200 }
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201
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202 /**
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203 Add a class member to a struct.
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204 */
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205 void actOnInterfaceMember(DeclT if_decl, DeclT m_decl)
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206 {
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207 return null;
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208 }
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209
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210 /**
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211 Add a class member to a struct.
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212 */
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213 void actOnInterfaceBaseClass(DeclT if_decl, ref Id name)
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214 {
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215 return null;
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216 }
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217
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218 /**
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219 Add an initialization expression to a previously created decl.
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220
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221 Used for default values on function params and for values to local
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222 variables.
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223 */
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224 void addInitToDeclarator(DeclT decl, ExprT exp)
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225 {
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226 }
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227
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228 /**
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229 Called at the start of a function, doesn't get a lot of info - that is
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230 added later on, through addFuncArg and actOnEndOfFunction.
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231 */
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232 DeclT actOnStartOfFunctionDef(ref Id type, ref Id name, Attribute att)
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233 {
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234 return null;
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235 }
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236
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237 /**
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238 Add a new parameter to the function func.
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239 */
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240 void addFuncArg(DeclT func, Id type, Id name)
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241 {
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242 }
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243
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244 /**
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245 Finish off the function, by giving it the body (a single statement, so
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246 you probably want some sort of compound statement)
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247 */
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248 DeclT actOnEndOfFunction(DeclT func, StmtT stmts)
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249 {
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250 return func;
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251 }
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252
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253 // -- Statements --
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254
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255 /**
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256 Called after parsing a function/while/for/whatever body.
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257
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258 Note that stmts is to be considered temporary, it might point into the
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259 stack and needs to be copied before saving.
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260 */
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261 StmtT actOnCompoundStmt(ref Token left, ref Token right, StmtT[] stmts)
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262 {
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263 return null;
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264 }
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265
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266 /**
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267 An expression was used as a statement - this includes assignments,
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268 function calls.
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269
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270 Additionally the D spec dictates that expressions with no effect are not
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271 legal as statements, but the parser can't test for this so it has to be
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272 done in the later stages.
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273 */
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274 StmtT actOnExprStmt(ExprT exp)
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275 {
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276 return null;
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277 }
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278
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279 /**
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280 Called after parsing return statements.
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281
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282 loc is the return token.
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283 */
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284 StmtT actOnReturnStmt(ref Token loc, ExprT exp)
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285 {
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286 return null;
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287 }
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288
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289 /**
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290 */
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291 StmtT actOnIfStmt(ref Token ifTok, ExprT cond, StmtT thenBody,
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292 ref Token elseTok, StmtT elseBody)
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293 {
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294 return null;
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295 }
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296
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297 /**
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298 */
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299 StmtT actOnWhileStmt(ref Token whileTok, ExprT cond, StmtT whileBody)
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300 {
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301 return null;
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302 }
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303
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304 /**
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305 */
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306 StmtT actOnForStmt(ref Token forTok, StmtT init, ExprT cond, ExprT incre, StmtT forBody)
146
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307 {
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308 return null;
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309 }
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310
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311 /**
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312 */
48
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313 StmtT actOnDeclStmt(DeclT decl)
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314 {
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315 return null;
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316 }
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317
150
6c5a3c0bb4fb Make switch work again
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318 StmtT actOnStartOfSwitchStmt(Token _switch, ExprT exp)
44
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319 {
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320 return null;
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321 }
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322
150
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323 void actOnCaseStmt(StmtT stmt, Token _case, ExprT[] exps, StmtT[] stmts)
44
495188f9078e Big update - Moving towards a better, more seperated parser
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324 {
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
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325 }
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326
150
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327 void actOnDefaultStmt(StmtT stmt, Token _default, StmtT[] stmts)
44
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328 {
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parents:
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329 }
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330
495188f9078e Big update - Moving towards a better, more seperated parser
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331 StmtT actOnFinishSwitchStmt(StmtT sw)
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332 {
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333 return sw;
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334 }
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335
495188f9078e Big update - Moving towards a better, more seperated parser
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336 // -- Expressions --
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337
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338 /**
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339 A single numerical constant -- this can be absolutely any kind of number.
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340 Integers, floats, hex, octal, binary, imaginary and so on.
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341 */
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342 ExprT actOnNumericConstant(Token op)
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343 {
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344 return null;
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345 }
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346
495188f9078e Big update - Moving towards a better, more seperated parser
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347 /**
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348 This is called when identifiers are used in expressions.
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349 */
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350 ExprT actOnIdentifierExp(Id id)
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351 {
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352 return null;
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353 }
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354
495188f9078e Big update - Moving towards a better, more seperated parser
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355 /**
104
7ff4bc2accf2 Lexing more types of strings. Now all's left is to parse the string in the AST.
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356 This is called when strings are used in expression
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parents: 102
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357 */
7ff4bc2accf2 Lexing more types of strings. Now all's left is to parse the string in the AST.
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parents: 102
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358 ExprT actOnStringExp(Token t)
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Anders Johnsen <skabet@gmail.com>
parents: 102
diff changeset
359 {
7ff4bc2accf2 Lexing more types of strings. Now all's left is to parse the string in the AST.
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360 return null;
7ff4bc2accf2 Lexing more types of strings. Now all's left is to parse the string in the AST.
Anders Johnsen <skabet@gmail.com>
parents: 102
diff changeset
361 }
7ff4bc2accf2 Lexing more types of strings. Now all's left is to parse the string in the AST.
Anders Johnsen <skabet@gmail.com>
parents: 102
diff changeset
362
7ff4bc2accf2 Lexing more types of strings. Now all's left is to parse the string in the AST.
Anders Johnsen <skabet@gmail.com>
parents: 102
diff changeset
363 /**
44
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364 Unary operator.
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parents:
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365 */
495188f9078e Big update - Moving towards a better, more seperated parser
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366 ExprT actOnUnaryOp(Token op, ExprT operand)
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
367 {
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
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368 return null;
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
369 }
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
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370
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
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371 /**
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
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372 Binary operator.
495188f9078e Big update - Moving towards a better, more seperated parser
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373 */
88
eb5b2c719a39 Major change to locations, tokens and expressions.
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diff changeset
374 ExprT actOnBinaryOp(SLoc op_loc, Operator op, ExprT l, ExprT r)
44
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
375 {
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
376 return null;
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
377 }
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
378
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
379 /**
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
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380 Called when using the 'dot' operator.
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381 The left hand side can be any expression, but its only possible to look
495188f9078e Big update - Moving towards a better, more seperated parser
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382 up an identifier.
495188f9078e Big update - Moving towards a better, more seperated parser
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383 */
88
eb5b2c719a39 Major change to locations, tokens and expressions.
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parents: 83
diff changeset
384 ExprT actOnMemberReference(ExprT lhs, SourceLocation op, Id member)
44
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
385 {
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
386 return null;
495188f9078e Big update - Moving towards a better, more seperated parser
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parents:
diff changeset
387 }
48
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
388
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
389 /**
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
390 Called when function calls are encountered.
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
391
b6c1dc30ca4b Only tests that dont pass now are structs and switches
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parents: 46
diff changeset
392 Note that args is temporary and might point into the stack. Remember to
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
393 copy before saving a reference to it.
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
394 */
b6c1dc30ca4b Only tests that dont pass now are structs and switches
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parents: 46
diff changeset
395 ExprT actOnCallExpr(ExprT func, ref Token left_paren, ExprT[] args,
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
396 ref Token right_paren)
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
397 {
b6c1dc30ca4b Only tests that dont pass now are structs and switches
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parents: 46
diff changeset
398 return null;
b6c1dc30ca4b Only tests that dont pass now are structs and switches
Anders Halager <halager@gmail.com>
parents: 46
diff changeset
399 }
68
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
400
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
401 /**
83
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
402 Called when function calls are encountered.
9e90694f5da0 Parse array indexing, and allow reading from arrays
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parents: 81
diff changeset
403 */
158
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
404 ExprT actOnIndexExpr(ExprT array, ref Token left_bracket, ExprT index,
83
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
405 ref Token right_bracket)
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
406 {
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
407 return null;
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
408 }
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
409
9e90694f5da0 Parse array indexing, and allow reading from arrays
Anders Halager <halager@gmail.com>
parents: 81
diff changeset
410 /**
68
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
411 Cast expression.
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
412 */
88
eb5b2c719a39 Major change to locations, tokens and expressions.
Anders Halager <halager@gmail.com>
parents: 83
diff changeset
413 ExprT actOnCastExpr(ref Token _cast, Id type, ExprT exp)
68
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
414 {
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
415 return null;
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...
Anders Johnsen <skabet@gmail.com>
parents: 53
diff changeset
416 }
158
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
417
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
418 /**
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
419 New expression.
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
420 */
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
421 ExprT actOnNewExpr(ref Id type, ExprT[] a_args, ExprT[] c_args)
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
422 {
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
423 return null;
57b0b4464a0b Parsing "new", putting it in AST and performs some tests on it. Eg. if the contructor exists and the params matches.
Anders Johnsen <skabet@gmail.com>
parents: 153
diff changeset
424 }
185
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
425
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
426 /**
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
427 Array Literal expression.
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
428 */
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
429 ExprT actOnArrayLiteralExpr(ExprT[] exps, SLoc start, SLoc end)
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
430 {
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
431 return null;
7b274cfdc1dc Added support for array literals. Codegen is broken, though.
Anders Johnsen <skabet@gmail.com>
parents: 172
diff changeset
432 }
44
495188f9078e Big update - Moving towards a better, more seperated parser
Anders Halager <halager@gmail.com>
parents:
diff changeset
433 }
495188f9078e Big update - Moving towards a better, more seperated parser
Anders Halager <halager@gmail.com>
parents:
diff changeset
434
495188f9078e Big update - Moving towards a better, more seperated parser
Anders Halager <halager@gmail.com>
parents:
diff changeset
435 /**
49
c7cde6af0095 Seperated the AST from LLVM
Anders Halager <halager@gmail.com>
parents: 48
diff changeset
436 Doesn't do anything at all - can be used for benchmarking the parser.
c7cde6af0095 Seperated the AST from LLVM
Anders Halager <halager@gmail.com>
parents: 48
diff changeset
437 */
c7cde6af0095 Seperated the AST from LLVM
Anders Halager <halager@gmail.com>
parents: 48
diff changeset
438 class NullAction : Action
c7cde6af0095 Seperated the AST from LLVM
Anders Halager <halager@gmail.com>
parents: 48
diff changeset
439 {
c7cde6af0095 Seperated the AST from LLVM
Anders Halager <halager@gmail.com>
parents: 48
diff changeset
440 }
c7cde6af0095 Seperated the AST from LLVM
Anders Halager <halager@gmail.com>
parents: 48
diff changeset
441