今天照着C Minus的语法（略有修改）设计出了C Minus的语法树。语法树的设计尽量让生成语法树的代码易于编写。每一个结构的意义十分明确，而且结构与结构之间不需要有相互联系。举个例子，在生成语法树的时候，一个变量定义“Point p;”由两部分组成。其中第一部分是字符串"Point"而不是指向一个类型定义的指针TypeDeclaration*。当然至于Point代表什么，自有语义分析器代为理解。
过几天等毕业论文初稿写完了，我将使用Vczh Combinator Parser为C Minus构造语法分析器。前天为Vczh Combinator Parser加上了错误处理的能力，至此这个工具已经可以为编译器服务了。
语法树分为四大部分，其功能由四套类继承结构承担，基类分别是：
VL_CMinusType：类型表达式
VL_CMinusExpression：值表达式
VL_CMinusStatement：语句表达式
VL_CMinusDeclaration：程序全局对象声明
下面是语法树的代码：
1 /*******************************************************************************
2 Vczh Library++ 2.0
3 JIT::C简化版语法树
4 开发者：陈梓瀚
5 *******************************************************************************/
6 #ifndef VL_JIT_CMINUS
7 #define VL_JIT_CMINUS
8
9 #include "..\..\..\Data\Data\VL_Data_Basic.h"
10 #include "..\..\..\Data\Data\VL_Data_String.h"
11 #include "..\..\..\Data\Data\VL_Data_List.h"
12 #include "..\..\..\Data\Data\VL_Data_Map.h"
13
14 namespace vl
15 {
16 namespace jit
17 {
18 namespace cminus
19 {
20 using namespace collection;
21
22 class VL_CMinusExpressionInfo : public VL_Base
23 {
24 public:
25 VInt Line;
26
27 VL_CMinusExpressionInfo();
28 };
29
30 /*********************************************************************************************************
31 类型表达式
32 *********************************************************************************************************/
33
34 class VL_CMinusType : public VL_Base
35 {
36 public:
37 typedef VL_AutoPtr<VL_CMinusType> Ptr;
38 typedef VL_List<Ptr , false , VL_CMinusType> List;
39 typedef VL_List<VL_Fullpair<VUnicodeString , Ptr> , false> NamedList;
40
41 VL_CMinusExpressionInfo Info;
42 };
43
44 class VL_CMinusNamedType : public VL_CMinusType
45 {
46 public:
47 VUnicodeString Name;
48
49 VL_CMinusNamedType();
50 VL_CMinusNamedType(VUnicodeString aName);
51 };
52
53 class VL_CMinusPointerType : public VL_CMinusType
54 {
55 public:
56 VL_CMinusType::Ptr Type;
57
58 VL_CMinusPointerType();
59 VL_CMinusPointerType(VL_CMinusType::Ptr aType);
60 };
61
62 class VL_CMinusArrayType : public VL_CMinusType
63 {
64 public:
65 VL_CMinusType::Ptr Type;
66 VInt Count;
67
68 VL_CMinusArrayType();
69 VL_CMinusArrayType(VL_CMinusType::Ptr aType , VInt aCount);
70 };
71
72 class VL_CMinusFunctionType : public VL_CMinusType
73 {
74 public:
75 VL_CMinusType::Ptr ReturnType;
76 VL_CMinusType::List ParameterTypes;
77
78 VL_CMinusFunctionType();
79 VL_CMinusFunctionType(VL_CMinusType::Ptr aReturnType , VL_CMinusType::List& aParameterTypes);
80 };
81
82 class VL_CMinusStructType : public VL_CMinusType
83 {
84 public:
85 VL_CMinusType::NamedList MemberTypes;
86
87 VL_CMinusStructType();
88 VL_CMinusStructType(VL_CMinusType::NamedList& aMemberTypes);
89 };
90
91 /*********************************************************************************************************
92 值表达式
93 *********************************************************************************************************/
94
95 class VL_CMinusExpression : public VL_Base
96 {
97 public:
98 typedef VL_AutoPtr<VL_CMinusExpression> Ptr;
99 typedef VL_List<Ptr , false , VL_CMinusExpression> List;
100 typedef VL_List<VL_Fullpair<VUnicodeString , Ptr> , false> NamedList;
101
102 VL_CMinusExpressionInfo Info;
103 };
104
105 enum VLE_CMinusPrimitiveKind
106 {
107 vcpkInt,
108 vcpkFloat,
109 vcpkBool,
110 vcpkChar,
111 vcpkWChar,
112 vcpkString,
113 vcpkWString,
114 vcpkName,
115 vcpkNull
116 };
117 class VL_CMinusPrimitiveExpression : public VL_CMinusExpression
118 {
119 public:
120 VLE_CMinusPrimitiveKind Kind;
121 VInt IntValue;
122 VDouble FloatValue;
123 VBool BoolValue;
124 VWChar CharValue;
125 VUnicodeString StringValue;
126
127 VL_CMinusPrimitiveExpression(VInt Value);
128 VL_CMinusPrimitiveExpression(VDouble Value);
129 VL_CMinusPrimitiveExpression(VBool Value);
130 VL_CMinusPrimitiveExpression(VWChar Value , VBool Unicode);
131 VL_CMinusPrimitiveExpression(VUnicodeString Value , VBool Unicode);
132 VL_CMinusPrimitiveExpression(VUnicodeString Value);
133 };
134
135 enum VLE_CMinusUnaryOperator
136 {
137 vcuoPositive,
138 vcuoNegative,
139 vcuoBitNot,
140 vcuoNot,
141 vcboAddress,
142 vcboValue
143 };
144 class VL_CMinusUnaryExpression : public VL_CMinusExpression
145 {
146 public:
147 VLE_CMinusUnaryOperator Operator;
148 VL_CMinusExpression::Ptr Expression;
149
150 VL_CMinusUnaryExpression();
151 VL_CMinusUnaryExpression(VLE_CMinusUnaryOperator aOperator , VL_CMinusExpression::Ptr aExpression);
152 };
153
154 enum VLE_CMinusBinaryOperator
155 {
156 vcboAdd,
157 vcboSub,
158 vcboMul,
159 vcboDiv,
160 vcboMod,
161 vcboBitAnd,
162 vcboBitOr,
163 vcboBitXor,
164 vcboAnd,
165 vcboOr,
166 vcboXor,
167 vcboLess,
168 vcboLessAndEqual,
169 vcboGreater,
170 vcboGreaterAndEqual,
171 vcboEqual,
172 vcboNotEqual,
173 vcboSubScript,
174 };
175 class VL_CMinusBinaryExpression : public VL_CMinusExpression
176 {
177 public:
178 VLE_CMinusBinaryOperator Operator;
179 VL_CMinusExpression::Ptr Left;
180 VL_CMinusExpression::Ptr Right;
181
182 VL_CMinusBinaryExpression();
183 VL_CMinusBinaryExpression(VLE_CMinusBinaryOperator aOperator , VL_CMinusExpression::Ptr aLeft , VL_CMinusExpression::Ptr aRight);
184 };
185
186 class VL_CMinusInvokeExpression : public VL_CMinusExpression
187 {
188 public:
189 VL_CMinusExpression::Ptr Function;
190 VL_CMinusExpression::List Parameters;
191
192 VL_CMinusInvokeExpression();
193 VL_CMinusInvokeExpression(VL_CMinusExpression::Ptr aFunction , VL_CMinusExpression::List& aParameters);
194 };
195
196 class VL_CMinusTypeCastExpression : public VL_CMinusExpression
197 {
198 public:
199 VL_CMinusType::Ptr Type;
200 VL_CMinusExpression::Ptr Expression;
201
202 VL_CMinusTypeCastExpression();
203 VL_CMinusTypeCastExpression(VL_CMinusType::Ptr aType , VL_CMinusExpression::Ptr aExpression);
204 };
205
206 class VL_CMinusArrayBuildingExpression : public VL_CMinusExpression
207 {
208 public:
209 VL_CMinusType::Ptr Type;
210 VL_CMinusExpression::List Expressions;
211
212 VL_CMinusArrayBuildingExpression();
213 VL_CMinusArrayBuildingExpression(VL_CMinusType::Ptr aType , VL_CMinusExpression::List& aExpressions);
214 };
215
216 class VL_CMinusStructBuildingExpression : public VL_CMinusExpression
217 {
218 public:
219 VL_CMinusType::Ptr Type;
220 VL_CMinusExpression::NamedList MemberValues;
221
222 VL_CMinusStructBuildingExpression();
223 VL_CMinusStructBuildingExpression(VL_CMinusType::Ptr aType , VL_CMinusExpression::NamedList& aMemberValues);
224 };
225
226 /*********************************************************************************************************
227 语句表达式
228 *********************************************************************************************************/
229
230 class VL_CMinusStatement : public VL_Base
231 {
232 public:
233 typedef VL_AutoPtr<VL_CMinusStatement> Ptr;
234 typedef VL_List<Ptr , false , VL_CMinusStatement*> List;
235
236 VL_CMinusExpressionInfo Info;
237 };
238
239 class VL_CMinusVariableStatement : public VL_CMinusStatement
240 {
241 public:
242 VBool Const;
243 VUnicodeString Name;
244 VL_CMinusType::Ptr Type;
245 VL_CMinusExpression::Ptr Expression;
246
247 VL_CMinusVariableStatement();
248 VL_CMinusVariableStatement(VBool aConst , VUnicodeString aName , VL_CMinusType::Ptr aType , VL_CMinusExpression::Ptr aExpression);
249 };
250
251 class VL_CMinusExpressionStatement : public VL_CMinusStatement
252 {
253 public:
254 VL_CMinusExpression::Ptr Expression;
255
256 VL_CMinusExpressionStatement();
257 VL_CMinusExpressionStatement(VL_CMinusExpression::Ptr aExpression);
258 };
259
260 enum VLE_CMinusAssignmentOperator
261 {
262 vcaoAssignment,
263 vcaoAdd,
264 vcaoSub,
265 vcaoMul,
266 vcaoDiv,
267 vcaoMod,
268 vcaoBitAnd,
269 vcaoBitOr,
270 vcaoBitXor,
271 vcaoAnd,
272 vcaoOr,
273 vcaoXor
274 };
275 class VL_CMinusAssignmentStatement : public VL_CMinusStatement
276 {
277 public:
278 VLE_CMinusAssignmentOperator Operator;
279 VL_CMinusExpression::Ptr Left;
280 VL_CMinusExpression::Ptr Right;
281
282 VL_CMinusAssignmentStatement();
283 VL_CMinusAssignmentStatement(VLE_CMinusAssignmentOperator aOperator , VL_CMinusExpression::Ptr aLeft , VL_CMinusExpression::Ptr aRight);
284 };
285
286 class VL_CMinusIfStatement : public VL_CMinusStatement
287 {
288 public:
289 VL_CMinusExpression::Ptr Condition;
290 VL_CMinusStatement::Ptr TrueBody;
291 VL_CMinusStatement::Ptr FalseBody;
292
293 VL_CMinusIfStatement();
294 VL_CMinusIfStatement(VL_CMinusExpression::Ptr aCondition , VL_CMinusStatement::Ptr aTrueBody , VL_CMinusStatement::Ptr aFalseBody);
295 };
296
297 class VL_CMinusWhileStatement : public VL_CMinusStatement
298 {
299 public:
300 VL_CMinusExpression::Ptr Condition;
301 VL_CMinusStatement::Ptr Body;
302
303 VL_CMinusWhileStatement();
304 VL_CMinusWhileStatement(VL_CMinusExpression::Ptr aCondition , VL_CMinusStatement::Ptr aBody);
305 };
306
307 class VL_CMinusDoWhileStatement : public VL_CMinusStatement
308 {
309 public:
310 VL_CMinusExpression::Ptr Condition;
311 VL_CMinusStatement::Ptr Body;
312
313 VL_CMinusDoWhileStatement();
314 VL_CMinusDoWhileStatement(VL_CMinusExpression::Ptr aCondition , VL_CMinusStatement::Ptr aBody);
315 };
316
317 class VL_CMinusBreakStatement : public VL_CMinusStatement
318 {
319 public:
320 };
321
322 class VL_CMinusContinueStatement : public VL_CMinusStatement
323 {
324 public:
325 };
326
327 class VL_CMinusReturnStatement : public VL_CMinusStatement
328 {
329 public:
330 VL_CMinusExpression::Ptr Expression;
331
332 VL_CMinusReturnStatement();
333 VL_CMinusReturnStatement(VL_CMinusExpression::Ptr aExpression);
334 };
335
336 class VL_CMinusBlockStatement : public VL_CMinusStatement
337 {
338 public:
339 VL_CMinusStatement::List Statements;
340
341 VL_CMinusBlockStatement();
342 VL_CMinusBlockStatement(VL_CMinusStatement::List& aStatements);
343 };
344
345 /*********************************************************************************************************
346 程序结构
347 *********************************************************************************************************/
348
349 class VL_CMinusDeclaration : public VL_Base
350 {
351 public:
352 typedef VL_AutoPtr<VL_CMinusDeclaration> Ptr;
353 typedef VL_List<Ptr , false , VL_CMinusDeclaration*> List;
354
355 VL_CMinusExpressionInfo Info;
356 VUnicodeString Name;
357 };
358
359 class VL_CMinusTypeDeclaration : public VL_CMinusDeclaration
360 {
361 public:
362 VL_CMinusType::Ptr Type;
363
364 VL_CMinusTypeDeclaration();
365 VL_CMinusTypeDeclaration(VUnicodeString aName , VL_CMinusType::Ptr aType);
366 };
367
368 class VL_CMinusVariableDeclaration : public VL_CMinusDeclaration
369 {
370 public:
371 VBool Const;
372 VL_CMinusType::Ptr Type;
373 VL_CMinusExpression::Ptr Expression;
374
375 VL_CMinusVariableDeclaration();
376 VL_CMinusVariableDeclaration(VUnicodeString aName , VBool aConst , VL_CMinusType::Ptr aType , VL_CMinusExpression::Ptr aExpression);
377 };
378
379 class VL_CMinusFunctionDeclaration : public VL_CMinusDeclaration
380 {
381 public:
382 VL_CMinusType::Ptr ReturnType;
383 VL_CMinusType::NamedList ParameterTypes;
384 VL_CMinusStatement::Ptr Body;
385
386 VL_CMinusFunctionDeclaration();
387 VL_CMinusFunctionDeclaration(VUnicodeString aName , VL_CMinusType::Ptr aReturnType , VL_CMinusType::NamedList& aParameterTypes , VL_CMinusStatement::Ptr aBody);
388 };
389
390 class VL_CMinusExternalFunctionDeclaration : public VL_CMinusDeclaration
391 {
392 public:
393 VL_CMinusType::Ptr ReturnType;
394 VL_CMinusType::List ParameterTypes;
395 VUnicodeString Alias;
396
397 VL_CMinusExternalFunctionDeclaration();
398 VL_CMinusExternalFunctionDeclaration(VUnicodeString aName , VL_CMinusType::Ptr aReturnType , VL_CMinusType::List& aParameterTypes , VUnicodeString aAlias);
399 };
400
401 class VL_CMinusProgram : public VL_Base
402 {
403 public:
404 VL_CMinusDeclaration::List Declarations;
405 };
406 }
407 }
408 }
409
410 #endif
posted on 2009-04-24 00:58
陈梓瀚(vczh) 阅读(3056)
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