Mercurial > projects > dang
annotate ast/Exp.d @ 77:13eea2c4e60d new_gen
Now able of --ast-dump-code with Pointer types and also codeGen int* x;
author | Anders Johnsen <skabet@gmail.com> |
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date | Fri, 02 May 2008 16:37:13 +0200 |
parents | 628cb46ab13b |
children | 81813366ef92 |
rev | line source |
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1 | 1 module ast.Exp; |
2 | |
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Been working on the floating point parsing. Still a bit of work to do here.
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3 import tango.text.Util; |
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4 import tango.io.Stdout; |
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5 |
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6 import ast.Decl, |
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7 ast.Stmt; |
1 | 8 |
9 import lexer.Token; | |
10 | |
58 | 11 import sema.SymbolTable, |
12 sema.DType; | |
1 | 13 |
14 enum ExpType | |
15 { | |
16 Binary, | |
17 Negate, | |
18 IntegerLit, | |
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19 MemberReference, |
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First update on the way to Arrays! :)
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20 ArrayReference, |
1 | 21 Identifier, |
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22 ArrayIdentifier, |
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23 PointerIdentifier, |
1 | 24 AssignExp, |
25 CallExp, | |
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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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26 CastExp, |
1 | 27 } |
28 | |
29 class Exp | |
30 { | |
31 this(ExpType expType) | |
32 { | |
33 this.expType = expType; | |
34 } | |
35 | |
58 | 36 DType type() { return null; } |
37 | |
1 | 38 ExpType expType; |
39 Scope env; | |
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40 int stmtIndex; |
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41 |
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42 Exp simplify() |
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43 { |
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44 return this; |
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45 } |
1 | 46 } |
47 | |
48 class CallExp : Exp | |
49 { | |
50 this(Exp exp, Exp[] args) | |
51 { | |
52 super(ExpType.CallExp); | |
53 this.exp = exp; | |
54 this.args = args; | |
55 } | |
56 | |
58 | 57 override DType type() |
58 { | |
59 DFunction f = cast(DFunction)exp.type(); | |
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60 assert(f !is null, "Can only call functions"); |
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61 return f.returnType; |
58 | 62 } |
63 | |
1 | 64 Exp exp; |
65 Exp[] args; | |
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66 bool sret = false; |
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67 |
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68 |
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69 Exp simplify() |
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70 { |
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71 if(auto t = cast(DStruct)type) |
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72 { |
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73 DFunction func_t = cast(DFunction)exp.type(); |
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74 assert(func_t !is null, "Calling on something that isn't a function"); |
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75 if (cast(DStruct)func_t.returnType is null) |
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76 return this; |
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77 |
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78 auto call = cast(Identifier)exp; |
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79 FuncDecl f = env.parentFunction; |
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80 auto i = new Identifier("temp.var"); |
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81 i.env = f.env; |
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82 f.env.add(i); |
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83 f.env.find(i).type = t; |
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84 auto ty = new Identifier(t.name); |
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85 auto var = new VarDecl(ty, i, null); |
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86 Exp[] args; |
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87 args ~= i; |
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88 args ~= this.args; |
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89 auto callExp = new CallExp(exp, args); |
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90 callExp.env = f.env; |
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91 var.env = f.env; |
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92 auto stmtVar = new DeclStmt(var); |
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93 auto stmtCall = new ExpStmt(callExp); |
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94 Stmt[] stmts; |
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95 foreach( index, s ; f.statements) |
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96 { |
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97 if(stmtIndex == index) |
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98 { |
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99 stmts ~= stmtVar; |
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100 stmts ~= stmtCall; |
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101 } |
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102 stmts ~= s; |
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103 } |
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104 f.statements = stmts; |
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105 callExp.sret = true; |
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106 |
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107 return i; |
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108 } |
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109 return this; |
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110 } |
1 | 111 } |
112 | |
113 class AssignExp : Exp | |
114 { | |
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115 this(Exp identifier, Exp exp) |
1 | 116 { |
117 super(ExpType.AssignExp); | |
118 this.identifier = identifier; | |
119 this.exp = exp; | |
120 } | |
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121 Exp simplify() |
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122 { |
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123 identifier = identifier.simplify; |
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124 exp = exp.simplify; |
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125 |
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126 return this; |
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127 } |
1 | 128 |
58 | 129 override DType type() { return identifier.type(); } |
130 | |
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131 Exp identifier; |
1 | 132 Exp exp; |
133 } | |
134 | |
135 class BinaryExp : Exp | |
136 { | |
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137 public enum Operator |
1 | 138 { |
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139 Assign, |
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140 |
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141 Eq, Ne, |
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142 |
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143 Lt, Le, |
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144 Gt, Ge, |
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145 |
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146 Add, Sub, |
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147 Mul, Div, Mod, |
1 | 148 } |
149 | |
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150 char[][] getOp = ["=","==","!=","<","<=",">",">=","+","-","*","/","%"]; |
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151 |
1 | 152 this(Operator op, Exp left, Exp right) |
153 { | |
154 super(ExpType.Binary); | |
155 this.op = op; | |
156 this.left = left; | |
157 this.right = right; | |
158 } | |
159 | |
58 | 160 override DType type() |
161 { | |
162 if (myType) | |
163 return myType; | |
164 | |
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165 if (op == Operator.Eq || |
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166 op == Operator.Ne || |
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167 op == Operator.Lt || |
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168 op == Operator.Le || |
381975d76baf
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169 op == Operator.Gt || |
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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170 op == Operator.Ge) |
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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171 { |
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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172 myType = DType.Bool; |
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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173 return myType; |
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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174 } |
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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parents:
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175 |
58 | 176 DType l = left.type; |
177 DType r = right.type; | |
178 if (l is r) | |
179 myType = l; | |
180 else if (l.hasImplicitConversionTo(r)) | |
181 myType = r; | |
182 else if (r.hasImplicitConversionTo(l)) | |
183 myType = l; | |
184 else | |
185 return null; | |
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186 return myType; |
58 | 187 } |
188 | |
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189 char[] resultType() |
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190 { |
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191 if (op >= Operator.Eq && op <= Operator.Ge) |
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192 return "bool"; |
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193 return null; |
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194 } |
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195 Exp simplify() |
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196 { |
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197 left = left.simplify; |
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198 right = right.simplify; |
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199 return this; |
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200 } |
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201 |
1 | 202 Operator op; |
203 Exp left, right; | |
58 | 204 private DType myType; |
1 | 205 } |
206 | |
207 class NegateExp : Exp | |
208 { | |
209 this(Exp exp) | |
210 { | |
211 super(ExpType.Negate); | |
212 this.exp = exp; | |
213 } | |
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214 Exp simplify() |
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215 { |
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216 exp = exp.simplify; |
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217 return this; |
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218 } |
1 | 219 |
58 | 220 override DType type() { return exp.type(); } |
221 | |
1 | 222 public Exp exp; |
223 } | |
224 | |
225 class IntegerLit : Exp | |
226 { | |
227 this(Token t) | |
228 { | |
229 super(ExpType.IntegerLit); | |
230 this.token = t; | |
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231 this.name = substitute(t.get,"_",""); |
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232 } |
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233 |
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234 char[] get() |
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235 { |
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236 return name; |
1 | 237 } |
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238 Exp simplify() |
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239 { |
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240 return this; |
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241 } |
1 | 242 |
58 | 243 override DType type() { return DType.Int; } |
244 | |
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245 |
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246 |
1 | 247 Token token; |
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248 char[] name; |
1 | 249 } |
250 | |
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251 class MemberReference : Exp |
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252 { |
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253 this(Exp target, Identifier child) |
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254 { |
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255 super(ExpType.MemberReference); |
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256 this.target = target; |
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257 this.child = child; |
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258 } |
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259 Exp simplify() |
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260 { |
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261 target = target.simplify; |
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262 return this; |
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263 } |
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264 |
58 | 265 override DType type() |
266 { | |
267 if (myType) | |
268 return myType; | |
269 | |
270 DStruct st = cast(DStruct)target.type; | |
271 assert(st, "Only structs have members"); | |
272 if (auto t = st.typeOf(child.token.get)) | |
273 myType = t; | |
274 // no error reporting here | |
275 else assert(0, "Referencing non-existant member"); | |
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276 |
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277 return myType; |
58 | 278 } |
279 | |
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280 Identifier child; |
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281 Exp target; |
58 | 282 private DType myType; |
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283 } |
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284 |
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285 class ArrayReference : Exp |
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286 { |
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287 this(Exp target, IntegerLit pos) |
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288 { |
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289 super(ExpType.ArrayReference); |
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290 this.target = target; |
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291 this.pos = pos; |
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292 } |
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293 |
58 | 294 override DType type() { return target.type(); } |
295 | |
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296 Exp simplify() |
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297 { |
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298 target = target.simplify; |
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299 pos.simplify; |
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300 return this; |
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301 } |
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302 |
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303 Exp target; |
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304 IntegerLit pos; |
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305 } |
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306 |
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307 class CastExp : Exp |
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308 { |
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309 this(Identifier castType, Exp exp) |
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310 { |
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311 super(ExpType.CastExp); |
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312 this.castType = castType; |
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313 this.exp = exp; |
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314 } |
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315 |
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316 override DType type() |
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317 { |
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318 return env.findType(this.castType); |
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319 } |
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320 |
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321 Exp simplify() |
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322 { |
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323 castType.simplify; |
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324 exp.simplify; |
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325 return this; |
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326 } |
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327 |
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328 Identifier castType; |
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329 Exp exp; |
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330 } |
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331 |
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332 class PointerIdentifier : Identifier |
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333 { |
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334 this(Identifier pointerOf) |
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335 { |
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336 super(ExpType.PointerIdentifier); |
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337 this.pointerOf = pointerOf; |
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338 this.name = pointerOf.name; |
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339 } |
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340 |
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341 override DType type() |
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342 { |
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343 if (myType !is null) |
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344 return myType; |
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345 myType = new DPointer(pointerOf.type); |
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346 return myType; |
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347 } |
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348 |
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349 Identifier pointerOf; |
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350 |
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351 private DType myType; |
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352 } |
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353 |
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354 class ArrayIdentifier : Identifier |
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355 { |
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356 this(Identifier arrayOf) |
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357 { |
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358 super(ExpType.ArrayIdentifier); |
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359 this.arrayOf = arrayOf; |
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360 } |
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361 |
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362 override DType type() |
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363 { |
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364 if (myType !is null) |
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365 return myType; |
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366 myType = new DArray(arrayOf.type); |
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367 return myType; |
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368 } |
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369 |
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370 Identifier arrayOf; |
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371 |
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372 private DType myType; |
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373 } |
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374 |
1 | 375 class Identifier : Exp |
376 { | |
377 this(Token t) | |
378 { | |
379 super(ExpType.Identifier); | |
380 this.token = t; | |
381 name = t.get; | |
382 } | |
383 | |
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384 protected this(ExpType t) |
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385 { |
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386 super(t); |
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387 } |
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388 |
58 | 389 override DType type() |
390 { | |
59
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391 if (myType !is null) |
58 | 392 return myType; |
393 myType = env.find(this).type; | |
394 return myType; | |
395 } | |
396 | |
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397 this(char[] name) |
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398 { |
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399 super(ExpType.Identifier); |
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400 this.name = name; |
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401 } |
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402 |
1 | 403 char[] get() |
404 { | |
405 return name; | |
406 } | |
407 | |
408 hash_t toHash() | |
409 { | |
410 return jhash(name); | |
411 } | |
412 | |
413 int opCmp(Object o) | |
414 { | |
415 if (auto id = cast(Identifier)o) | |
416 return typeid(char[]).compare(&name, &id.name); | |
417 return 0; | |
418 } | |
419 | |
420 int opEquals(Object o) | |
421 { | |
422 if (auto id = cast(Identifier)o) | |
423 return typeid(char[]).equals(&name, &id.name); | |
424 return 0; | |
425 } | |
426 | |
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427 Exp simplify() |
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428 { |
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429 return this; |
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430 } |
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431 |
1 | 432 Token token; |
433 char[] name; | |
58 | 434 private DType myType; |
1 | 435 } |
436 |