Mercurial > projects > dang
annotate sema/Visitor.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 | 81813366ef92 |
children | 06dda301ea61 |
rev | line source |
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1 | 1 module sema.Visitor; |
2 | |
3 import tango.io.Stdout; | |
4 | |
5 public | |
6 import ast.Decl, | |
7 ast.Stmt, | |
8 ast.Exp; | |
9 | |
10 import lexer.Token; | |
11 | |
12 class Visitor(FinalT = int, DeclT = FinalT, StmtT = DeclT, ExpT = StmtT) | |
13 { | |
14 public: | |
15 FinalT visit(Decl[] decls) | |
16 { | |
17 foreach (decl; decls) | |
18 visitDecl(decl); | |
19 static if (is(FinalT == void)) | |
20 return; | |
21 else | |
22 return FinalT.init; | |
23 } | |
24 | |
25 DeclT visitDecl(Decl decl) | |
26 { | |
27 switch(decl.declType) | |
28 { | |
29 case DeclType.FuncDecl: | |
30 return visitFuncDecl(cast(FuncDecl)decl); | |
31 case DeclType.VarDecl: | |
32 return visitVarDecl(cast(VarDecl)decl); | |
22 | 33 case DeclType.StructDecl: |
34 return visitStructDecl(cast(StructDecl)decl); | |
1 | 35 default: |
36 throw new Exception("Unknown declaration type"); | |
37 } | |
38 } | |
39 | |
40 StmtT visitStmt(Stmt stmt) | |
41 { | |
42 switch(stmt.stmtType) | |
43 { | |
44 case StmtType.Return: | |
45 return visitReturnStmt(cast(ReturnStmt)stmt); | |
44
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46 case StmtType.Compound: |
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47 return visitCompoundStmt(cast(CompoundStatement)stmt); |
1 | 48 case StmtType.Decl: |
49 return visitDeclStmt(cast(DeclStmt)stmt); | |
50 case StmtType.Exp: | |
51 return visitExpStmt(cast(ExpStmt)stmt); | |
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52 case StmtType.If: |
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53 return visitIfStmt(cast(IfStmt)stmt); |
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54 case StmtType.While: |
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55 return visitWhileStmt(cast(WhileStmt)stmt); |
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56 case StmtType.Switch: |
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57 return visitSwitchStmt(cast(SwitchStmt)stmt); |
1 | 58 default: |
59 throw new Exception("Unknown statement type"); | |
60 } | |
61 } | |
62 | |
63 ExpT visitExp(Exp exp) | |
64 { | |
65 switch(exp.expType) | |
66 { | |
67 case ExpType.Binary: | |
68 return visitBinaryExp(cast(BinaryExp)exp); | |
69 case ExpType.IntegerLit: | |
70 return visitIntegerLit(cast(IntegerLit)exp); | |
71 case ExpType.Negate: | |
72 return visitNegateExp(cast(NegateExp)exp); | |
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73 case ExpType.Deref: |
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74 return visitDerefExp(cast(DerefExp)exp); |
1 | 75 case ExpType.AssignExp: |
76 return visitAssignExp(cast(AssignExp)exp); | |
77 case ExpType.CallExp: | |
78 return visitCallExp(cast(CallExp)exp); | |
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79 case ExpType.CastExp: |
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80 return visitCastExp(cast(CastExp)exp); |
1 | 81 case ExpType.Identifier: |
82 return visitIdentifier(cast(Identifier)exp); | |
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83 case ExpType.PointerIdentifier: |
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84 return visitPointerIdentifier(cast(PointerIdentifier)exp); |
81 | 85 case ExpType.ArrayIdentifier: |
86 return visitArrayIdentifier(cast(ArrayIdentifier)exp); | |
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87 case ExpType.MemberReference: |
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88 return visitMemberReference(cast(MemberReference)exp); |
1 | 89 default: |
90 throw new Exception("Unknown expression type"); | |
91 } | |
92 } | |
93 | |
94 // Declarations: | |
95 DeclT visitVarDecl(VarDecl d) | |
96 { | |
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97 visitExp(d.varType); |
1 | 98 visitExp(d.identifier); |
99 if (d.init) | |
100 visitExp(d.init); | |
101 | |
102 static if (is(DeclT == void)) | |
103 return; | |
104 else | |
105 return DeclT.init; | |
106 } | |
107 | |
108 DeclT visitFuncDecl(FuncDecl f) | |
109 { | |
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110 visitExp(f.returnType); |
1 | 111 visitExp(f.identifier); |
112 foreach (arg; f.funcArgs) | |
113 visitDecl(arg); | |
114 foreach (stmt; f.statements) | |
115 visitStmt(stmt); | |
116 | |
117 static if (is(DeclT == void)) | |
118 return; | |
119 else | |
120 return DeclT.init; | |
121 } | |
122 | |
22 | 123 DeclT visitStructDecl(StructDecl s) |
124 { | |
125 visitExp(s.identifier); | |
126 | |
127 foreach (arg; s.vars) | |
128 visitDecl(arg); | |
129 | |
130 static if (is(DeclT == void)) | |
131 return; | |
132 else | |
133 return DeclT.init; | |
134 } | |
135 | |
1 | 136 // Statements: |
137 StmtT visitReturnStmt(ReturnStmt s) | |
138 { | |
37 | 139 if (s.exp) |
140 visitExp(s.exp); | |
1 | 141 static if (is(StmtT == void)) |
142 return; | |
143 else | |
144 return StmtT.init; | |
145 } | |
146 | |
147 StmtT visitDeclStmt(DeclStmt d) | |
148 { | |
149 visitDecl(d.decl); | |
150 static if (is(StmtT == void)) | |
151 return; | |
152 else | |
153 return StmtT.init; | |
154 } | |
155 | |
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156 StmtT visitCompoundStmt(CompoundStatement c) |
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157 { |
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158 foreach (stmt; c.statements) |
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159 visitStmt(stmt); |
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160 static if (is(StmtT == void)) |
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161 return; |
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162 else |
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163 return StmtT.init; |
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164 } |
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165 |
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166 StmtT visitIfStmt(IfStmt s) |
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167 { |
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168 visitExp(s.cond); |
45 | 169 visitStmt(s.then_body); |
170 if (s.else_body !is null) | |
171 visitStmt(s.else_body); | |
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172 static if (is(StmtT == void)) |
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173 return; |
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174 else |
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175 return StmtT.init; |
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176 } |
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177 |
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178 StmtT visitWhileStmt(WhileStmt s) |
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179 { |
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180 visitExp(s.cond); |
46 | 181 visitStmt(s.whileBody); |
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182 static if (is(StmtT == void)) |
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183 return; |
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184 else |
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185 return StmtT.init; |
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186 } |
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187 |
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188 StmtT visitSwitchStmt(SwitchStmt s) |
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189 { |
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190 visitExp(s.cond); |
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191 foreach(stmt; s.defaultBlock) |
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192 visitStmt(stmt); |
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193 foreach (c; s.cases) |
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194 { |
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195 foreach(lit; c.values) |
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196 visitIntegerLit(lit); |
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197 foreach(stmt; c.stmts) |
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198 visitStmt(stmt); |
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199 } |
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200 static if (is(StmtT == void)) |
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201 return; |
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202 else |
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203 return StmtT.init; |
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204 } |
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205 |
1 | 206 StmtT visitExpStmt(ExpStmt s) |
207 { | |
208 visitExp(s.exp); | |
209 static if (is(StmtT == void)) | |
210 return; | |
211 else | |
212 return StmtT.init; | |
213 } | |
214 | |
215 // Expressions: | |
216 ExpT visitAssignExp(AssignExp exp) | |
217 { | |
218 visitExp(exp.identifier); | |
219 visitExp(exp.exp); | |
220 static if (is(ExpT == void)) | |
221 return; | |
222 else | |
223 return ExpT.init; | |
224 } | |
225 | |
226 ExpT visitBinaryExp(BinaryExp exp) | |
227 { | |
228 visitExp(exp.left); | |
229 visitExp(exp.right); | |
230 static if (is(ExpT == void)) | |
231 return; | |
232 else | |
233 return ExpT.init; | |
234 } | |
235 | |
236 ExpT visitCallExp(CallExp exp) | |
237 { | |
238 visitExp(exp.exp); | |
239 foreach (arg; exp.args) | |
240 visitExp(arg); | |
241 static if (is(ExpT == void)) | |
242 return; | |
243 else | |
244 return ExpT.init; | |
245 } | |
246 | |
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parents:
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247 ExpT visitCastExp(CastExp exp) |
381975d76baf
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parents:
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248 { |
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249 visitExp(exp.castType); |
381975d76baf
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parents:
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250 visitExp(exp.exp); |
381975d76baf
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parents:
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251 static if (is(ExpT == void)) |
381975d76baf
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parents:
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252 return; |
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parents:
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253 else |
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parents:
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254 return ExpT.init; |
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parents:
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255 } |
381975d76baf
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parents:
63
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256 |
1 | 257 ExpT visitNegateExp(NegateExp exp) |
258 { | |
259 visitExp(exp.exp); | |
260 static if (is(ExpT == void)) | |
261 return; | |
262 else | |
263 return ExpT.init; | |
264 } | |
265 | |
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266 ExpT visitDerefExp(DerefExp exp) |
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267 { |
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268 visitExp(exp.exp); |
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269 static if (is(ExpT == void)) |
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270 return; |
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271 else |
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272 return ExpT.init; |
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273 } |
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274 |
1 | 275 ExpT visitIntegerLit(IntegerLit exp) |
276 { | |
277 static if (is(ExpT == void)) | |
278 return; | |
279 else | |
280 return ExpT.init; | |
281 } | |
282 | |
283 ExpT visitIdentifier(Identifier exp) | |
284 { | |
285 static if (is(ExpT == void)) | |
286 return; | |
287 else | |
288 return ExpT.init; | |
289 } | |
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290 |
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291 ExpT visitPointerIdentifier(PointerIdentifier exp) |
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292 { |
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293 visitExp(exp.pointerOf); |
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294 |
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295 static if (is(ExpT == void)) |
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296 return; |
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297 else |
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298 return ExpT.init; |
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299 } |
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300 |
81 | 301 ExpT visitArrayIdentifier(ArrayIdentifier exp) |
302 { | |
303 visitExp(exp.arrayOf); | |
304 | |
305 static if (is(ExpT == void)) | |
306 return; | |
307 else | |
308 return ExpT.init; | |
309 } | |
310 | |
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311 ExpT visitMemberReference(MemberReference mem) |
28
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312 { |
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313 visitExp(mem.target); |
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314 visitExp(mem.child); |
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315 |
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316 static if (is(ExpT == void)) |
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317 return; |
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318 else |
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319 return ExpT.init; |
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320 } |
1 | 321 } |
322 |