Mercurial > projects > dang
annotate sema/SymbolTableBuilder.d @ 81:110c7e1c4ca2 new_gen
Now you can declare array
author | Anders Johnsen <skabet@gmail.com> |
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date | Fri, 02 May 2008 18:23:33 +0200 |
parents | 13eea2c4e60d |
children | 06dda301ea61 |
rev | line source |
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1 | 1 module sema.SymbolTableBuilder; |
2 | |
14 | 3 import tango.io.Stdout, |
4 tango.core.Array : find; | |
1 | 5 |
26 | 6 public |
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7 import sema.SymbolTable; |
1 | 8 |
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9 import sema.Visitor, |
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10 basic.SmallArray; |
1 | 11 |
12 class SymbolTableBuilder : Visitor!(void) | |
13 { | |
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14 override void visit(Decl[] decls) |
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15 { |
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16 auto sb = new ScopeBuilder(); |
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17 sb.visit(decls); |
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18 foreach (decl; decls) |
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19 visitDecl(decl); |
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20 } |
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21 |
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22 override void visitFuncDecl(FuncDecl d) |
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23 { |
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24 visitExp(d.returnType); |
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25 visitExp(d.identifier); |
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26 foreach (arg; d.funcArgs) |
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27 visitDecl(arg); |
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28 foreach (stmt; d.statements) |
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29 visitStmt(stmt); |
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30 |
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31 auto sym = d.env.find(d.identifier); |
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32 sym.type = d.type; |
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33 } |
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34 |
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35 override void visitVarDecl(VarDecl d) |
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36 { |
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37 if (d.init) |
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38 visitExp(d.init); |
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39 |
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40 d.env.find(d.identifier).type = typeOf(d.varType, d.env); |
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41 visitExp(d.varType); |
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42 visitExp(d.identifier); |
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43 } |
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44 |
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45 override void visitStructDecl(StructDecl s) |
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46 { |
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47 DType[char[]] types; |
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48 |
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49 auto st = s.env.types[s.identifier.get].asStruct; |
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50 foreach(varDecl ; s.vars) |
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51 st.addMember(typeOf(varDecl.varType, varDecl.env), varDecl.identifier.get); |
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52 |
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53 super.visitStructDecl(s); |
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54 } |
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55 |
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56 DType typeOf(Identifier id, Scope sc) |
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57 { |
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58 if(auto i = cast(PointerIdentifier)id) |
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59 return new DPointer(typeOf(i.pointerOf, sc)); |
81 | 60 if(auto i = cast(ArrayIdentifier)id) |
61 return new DArray(typeOf(i.arrayOf, sc), i.size); | |
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62 return sc.findType(id); |
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63 } |
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64 } |
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65 |
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66 class ScopeBuilder : Visitor!(void) |
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67 { |
1 | 68 this() |
69 { | |
70 table ~= new Scope; | |
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71 table[0].types["void"] = DType.Void; |
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72 table[0].types["bool"] = DType.Bool; |
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73 table[0].types["byte"] = DType.Byte; |
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74 table[0].types["ubyte"] = DType.UByte; |
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75 table[0].types["short"] = DType.Short; |
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76 table[0].types["ushort"] = DType.UShort; |
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77 table[0].types["int"] = DType.Int; |
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78 table[0].types["uint"] = DType.UInt; |
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79 table[0].types["long"] = DType.Long; |
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80 table[0].types["ulong"] = DType.ULong; |
1 | 81 } |
82 | |
83 override void visit(Decl[] decls) | |
84 { | |
85 foreach (decl; decls) | |
86 visitDecl(decl); | |
87 } | |
88 | |
89 override void visitDecl(Decl d) | |
90 { | |
91 d.env = current(); | |
92 super.visitDecl(d); | |
93 } | |
94 | |
95 override void visitStmt(Stmt s) | |
96 { | |
97 s.env = current(); | |
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98 s.stmtIndex = s.env.stmtIndex; |
1 | 99 super.visitStmt(s); |
100 } | |
101 | |
102 override void visitExp(Exp e) | |
103 { | |
104 e.env = current(); | |
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105 e.stmtIndex = e.env.stmtIndex; |
1 | 106 super.visitExp(e); |
107 } | |
108 | |
109 override void visitFuncDecl(FuncDecl d) | |
110 { | |
111 auto sym = current().add(d.identifier); | |
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112 auto sc = push(); |
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113 |
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114 visitExp(d.returnType); |
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115 visitExp(d.identifier); |
1 | 116 d.env = current(); |
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117 sc.parentFunction = d; |
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118 foreach (arg; d.funcArgs) |
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119 visitDecl(arg); |
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120 foreach (stmt; d.statements) |
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121 { |
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122 sc.currentStmtIndex++; |
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123 visitStmt(stmt); |
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124 } |
14 | 125 pop(sc); |
1 | 126 } |
127 | |
128 override void visitVarDecl(VarDecl d) | |
129 { | |
24 | 130 if (d.init) |
131 visitExp(d.init); | |
132 | |
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133 if (need_push > 0 && current().parentFunction !is null) { |
24 | 134 push(); |
135 --need_push; | |
136 } | |
137 | |
1 | 138 auto sc = current(); |
139 auto sym = sc.add(d.identifier); | |
24 | 140 d.env = sc; |
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141 visitExp(d.varType); |
24 | 142 visitExp(d.identifier); |
1 | 143 } |
144 | |
22 | 145 override void visitStructDecl(StructDecl s) |
146 { | |
147 auto sc = current(); | |
148 auto sym = sc.add(s.identifier); | |
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149 s.env = sc; |
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150 auto type = new DStruct(s.identifier); |
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151 |
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152 sc.types[s.identifier.get] = type; |
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153 |
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154 sc = push(); |
22 | 155 super.visitStructDecl(s); |
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156 pop(sc); |
22 | 157 } |
158 | |
14 | 159 override void visitDeclStmt(DeclStmt d) |
160 { | |
24 | 161 ++need_push; |
14 | 162 super.visitDeclStmt(d); |
163 } | |
24 | 164 private uint need_push = 0; |
14 | 165 |
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166 override void visitIfStmt(IfStmt s) |
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167 { |
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168 s.env = current(); |
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169 visitExp(s.cond); |
14 | 170 auto sc = push(); |
45 | 171 visitStmt(s.then_body); |
14 | 172 pop(sc); |
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173 |
45 | 174 if (s.else_body !is null) |
175 { | |
176 sc = push(); | |
177 visitStmt(s.else_body); | |
178 pop(sc); | |
179 } | |
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180 } |
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181 |
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182 override void visitWhileStmt(WhileStmt s) |
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183 { |
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184 s.env = current(); |
14 | 185 auto sc = push(); |
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186 super.visitWhileStmt(s); |
14 | 187 pop(sc); |
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188 } |
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189 |
44
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190 override void visitCompoundStmt(CompoundStatement s) |
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191 { |
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192 s.env = current(); |
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193 auto sc = push(); |
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194 super.visitCompoundStmt(s); |
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195 pop(sc); |
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196 } |
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197 |
1 | 198 private: |
199 Scope[] table; | |
200 | |
14 | 201 Scope push() |
1 | 202 { |
14 | 203 auto sc = new Scope(current()); |
204 table ~= sc; | |
205 return sc; | |
1 | 206 } |
207 | |
14 | 208 Scope pop(Scope sc = null) |
1 | 209 { |
14 | 210 if (sc !is null) |
211 { | |
212 table.length = table.find(sc); | |
213 return sc; | |
214 } | |
215 | |
1 | 216 auto res = table[$ - 1]; |
217 table.length = table.length - 1; | |
218 return res; | |
219 } | |
220 | |
221 Scope current() | |
222 { | |
223 return table[$ - 1]; | |
224 } | |
225 } | |
226 |