Mercurial > projects > dang
annotate sema/Visitor.d @ 28:69464d465284 new_gen
Now supporting structs - both read and write. Still a few errors though, so watch out.
author | Anders Johnsen <skabet@gmail.com> |
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date | Sun, 20 Apr 2008 11:20:28 +0200 |
parents | e331e4e816e4 |
children | ce17bea8e9bd |
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); | |
46 case StmtType.Decl: | |
47 return visitDeclStmt(cast(DeclStmt)stmt); | |
48 case StmtType.Exp: | |
49 return visitExpStmt(cast(ExpStmt)stmt); | |
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50 case StmtType.If: |
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51 return visitIfStmt(cast(IfStmt)stmt); |
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52 case StmtType.While: |
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53 return visitWhileStmt(cast(WhileStmt)stmt); |
1 | 54 default: |
55 throw new Exception("Unknown statement type"); | |
56 } | |
57 } | |
58 | |
59 ExpT visitExp(Exp exp) | |
60 { | |
61 switch(exp.expType) | |
62 { | |
63 case ExpType.Binary: | |
64 return visitBinaryExp(cast(BinaryExp)exp); | |
65 case ExpType.IntegerLit: | |
66 return visitIntegerLit(cast(IntegerLit)exp); | |
67 case ExpType.Negate: | |
68 return visitNegateExp(cast(NegateExp)exp); | |
69 case ExpType.AssignExp: | |
70 return visitAssignExp(cast(AssignExp)exp); | |
71 case ExpType.CallExp: | |
72 return visitCallExp(cast(CallExp)exp); | |
73 case ExpType.Identifier: | |
74 return visitIdentifier(cast(Identifier)exp); | |
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69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
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75 case ExpType.MemberLookup: |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
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parents:
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76 return visitMemberLookup(cast(MemberLookup)exp); |
1 | 77 default: |
78 throw new Exception("Unknown expression type"); | |
79 } | |
80 } | |
81 | |
82 // Declarations: | |
83 DeclT visitVarDecl(VarDecl d) | |
84 { | |
85 visitExp(d.type); | |
86 visitExp(d.identifier); | |
87 if (d.init) | |
88 visitExp(d.init); | |
89 | |
90 static if (is(DeclT == void)) | |
91 return; | |
92 else | |
93 return DeclT.init; | |
94 } | |
95 | |
96 DeclT visitFuncDecl(FuncDecl f) | |
97 { | |
98 visitExp(f.type); | |
99 visitExp(f.identifier); | |
100 foreach (arg; f.funcArgs) | |
101 visitDecl(arg); | |
102 foreach (stmt; f.statements) | |
103 visitStmt(stmt); | |
104 | |
105 static if (is(DeclT == void)) | |
106 return; | |
107 else | |
108 return DeclT.init; | |
109 } | |
110 | |
22 | 111 DeclT visitStructDecl(StructDecl s) |
112 { | |
113 visitExp(s.identifier); | |
114 | |
115 foreach (arg; s.vars) | |
116 visitDecl(arg); | |
117 | |
118 static if (is(DeclT == void)) | |
119 return; | |
120 else | |
121 return DeclT.init; | |
122 } | |
123 | |
1 | 124 // Statements: |
125 StmtT visitReturnStmt(ReturnStmt s) | |
126 { | |
127 visitExp(s.exp); | |
128 static if (is(StmtT == void)) | |
129 return; | |
130 else | |
131 return StmtT.init; | |
132 } | |
133 | |
134 StmtT visitDeclStmt(DeclStmt d) | |
135 { | |
136 visitDecl(d.decl); | |
137 static if (is(StmtT == void)) | |
138 return; | |
139 else | |
140 return StmtT.init; | |
141 } | |
142 | |
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143 StmtT visitIfStmt(IfStmt s) |
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144 { |
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145 visitExp(s.cond); |
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146 foreach (stmt; s.then_body) |
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147 visitStmt(stmt); |
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148 foreach (stmt; s.else_body) |
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149 visitStmt(stmt); |
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150 static if (is(StmtT == void)) |
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151 return; |
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152 else |
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153 return StmtT.init; |
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154 } |
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parents:
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155 |
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156 StmtT visitWhileStmt(WhileStmt s) |
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157 { |
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parents:
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158 visitExp(s.cond); |
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parents:
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159 foreach (stmt; s.stmts) |
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160 visitStmt(stmt); |
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parents:
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161 static if (is(StmtT == void)) |
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parents:
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162 return; |
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163 else |
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164 return StmtT.init; |
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165 } |
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parents:
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166 |
1 | 167 StmtT visitExpStmt(ExpStmt s) |
168 { | |
169 visitExp(s.exp); | |
170 static if (is(StmtT == void)) | |
171 return; | |
172 else | |
173 return StmtT.init; | |
174 } | |
175 | |
176 // Expressions: | |
177 ExpT visitAssignExp(AssignExp exp) | |
178 { | |
179 visitExp(exp.identifier); | |
180 visitExp(exp.exp); | |
181 static if (is(ExpT == void)) | |
182 return; | |
183 else | |
184 return ExpT.init; | |
185 } | |
186 | |
187 ExpT visitBinaryExp(BinaryExp exp) | |
188 { | |
189 visitExp(exp.left); | |
190 visitExp(exp.right); | |
191 static if (is(ExpT == void)) | |
192 return; | |
193 else | |
194 return ExpT.init; | |
195 } | |
196 | |
197 ExpT visitCallExp(CallExp exp) | |
198 { | |
199 visitExp(exp.exp); | |
200 foreach (arg; exp.args) | |
201 visitExp(arg); | |
202 static if (is(ExpT == void)) | |
203 return; | |
204 else | |
205 return ExpT.init; | |
206 } | |
207 | |
208 ExpT visitNegateExp(NegateExp exp) | |
209 { | |
210 visitExp(exp.exp); | |
211 static if (is(ExpT == void)) | |
212 return; | |
213 else | |
214 return ExpT.init; | |
215 } | |
216 | |
217 ExpT visitIntegerLit(IntegerLit exp) | |
218 { | |
219 static if (is(ExpT == void)) | |
220 return; | |
221 else | |
222 return ExpT.init; | |
223 } | |
224 | |
225 ExpT visitIdentifier(Identifier exp) | |
226 { | |
227 static if (is(ExpT == void)) | |
228 return; | |
229 else | |
230 return ExpT.init; | |
231 } | |
28
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
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232 |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
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233 ExpT visitMemberLookup(MemberLookup mem) |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
|
234 { |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
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235 visitExp(mem.target); |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
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236 visitExp(mem.child); |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
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237 |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
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238 static if (is(ExpT == void)) |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
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239 return; |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
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240 else |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
changeset
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241 return ExpT.init; |
69464d465284
Now supporting structs - both read and write. Still a few errors though, so watch out.
Anders Johnsen <skabet@gmail.com>
parents:
22
diff
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242 } |
1 | 243 } |
244 |