整整写了一天，终于基本写完了CMinus的语义分析的代码，只剩下一个检查struct是否可以计算出长度的问题（环引用造成的）。下面贴出语义分析的结果，从结果中可以看出符号表的结构以及构造方法：
结果分成两部分，第一部分是格式化后的代码，第二部分是符号表。
1 开始语法分析
2 void BubbleSort (int* Input, int Count)
3 {
4 int i = 0;
5 while ((i < (Count - 1)))
6 {
7 int j = (Count - 2);
8 while ((j >= i))
9 {
10 if ((Input[j] > Input[(j + 1)]))
11 {
12 int Temp = Input[j];
13 Input[j] = Input[(j + 1)];
14 Input[(j + 1)] = Temp;
15 }
16 j -= 1;
17 }
18 i += 1;
19 }
20 }
21
22 int Fab (int Index)
23 {
24 if ((Index < 2))
25 return 1;
26 else
27 return (Fab((Index - 1)) + Fab((Index - 2)));
28 }
29
30 typedef struct
31 {
32 int Data;
33 Node* Next;
34 } Node;
35
36 extern void* malloc (int) alias "malloc";
37
38 extern void free (void*) alias "free";
39
40 Node* CreateNodes ()
41 {
42 Node* Head = (Node*)malloc(sizeof(Node));
43 *Head = Node{0, null};
44 Node* Tail = Head;
45 int Current = 1;
46 do
47 {
48 Node* NewNode = (Node*)malloc(sizeof(Node));
49 *NewNode = Node{Current, null};
50 Tail->Next = NewNode;
51 Tail = NewNode;
52 }
53 while ((Current <= 4));
54 return Head;
55 }
56
57 void FreeNodes (Node* Head)
58 {
59 while ((Head != null))
60 {
61 Node* Next = Head->Next;
62 free(Head);
63 Head = Next;
64 }
65 }
66
67 void CreateAndFreeNodes ()
68 {
69 FreeNodes(CreateNodes());
70 }
71
72 int SubRev (int A, int B)
73 {
74 return (-A + B);
75 }
76
77 int Sum ()
78 {
79 int[5] Number = int[]{1, 2, 3, 4, 5};
80 int Result = 0;
81 int Index = 0;
82 while (true)
83 {
84 Result += Number[Index];
85 Index += 1;
86 if ((Index == 5))
87 break;
88 else
89 continue;
90 }
91 return Result;
92 }
93
94 int GlobalA;
95
96 int GlobalB = 0;
97
98 const int GlobalC = 0;
99
100 const int GlobalD = 0;
101
102 void Local ()
103 {
104 int LocalA;
105 int LocalB = 0;
106 const int LocalC = 0;
107 const int LocalD = 0;
108 }
109
110 typedef int(int, int) IntFunc;
111
112 int Add (int a, int b)
113 {
114 return (a + b);
115 }
116
117 int Sub (int a, int b)
118 {
119 return (a - b);
120 }
121
122 void RunAll (int a, int b)
123 {
124 IntFunc[2] Funcs = IntFunc[]{Add, Sub};
125 int[2] Nums;
126 int Index = 0;
127 while ((Index < 2))
128 {
129 Nums[Index] = Funcs[Index](a, b);
130 Index += 1;
131 }
132 }
133
134 void DifferentTypes ()
135 {
136 byte vbyte = 0;
137 unsigned byte vubyte = 0;
138 signed byte vsbyte = 0;
139 short vshort = 0;
140 unsigned short vushort = 0;
141 signed short vsshort = 0;
142 int vint = 0;
143 unsigned int vuint = 0;
144 signed int vsint = 0;
145 char vchar = L'\0';
146 wchar vwchar = L'\0';
147 float vfloat = 0.0;
148 double vdouble = 0.0;
149 bool vbool = true;
150 }
151 开始语义分析
152 语义分析完成。
153 【CMINUS TYPE TABLE】
154 TYPE<0> = signed __int8
155 TYPE<1> = unsigned __int8
156 TYPE<2> = signed __int16
157 TYPE<3> = unsigned __int16
158 TYPE<4> = signed __int32
159 TYPE<5> = unsigned __int32
160 TYPE<6> = float
161 TYPE<7> = double
162 TYPE<8> = void
163 TYPE<9> = bool
164 TYPE<10> = <WRONG-PRIMITIVE-TYPE>
165 TYPE<11> = struct (TYPE<4> Data, TYPE<16> Next)
166 TYPE<12> = function TYPE<4> (TYPE<4>, TYPE<4>)
167 TYPE<13> = pointer of TYPE<4>
168 TYPE<14> = function TYPE<8> (TYPE<13>, TYPE<4>)
169 TYPE<15> = function TYPE<4> (TYPE<4>)
170 TYPE<16> = pointer of TYPE<11>
171 TYPE<17> = pointer of TYPE<8>
172 TYPE<18> = function TYPE<17> (TYPE<4>)
173 TYPE<19> = function TYPE<8> (TYPE<17>)
174 TYPE<20> = function TYPE<16> ()
175 TYPE<21> = function TYPE<8> (TYPE<16>)
176 TYPE<22> = function TYPE<8> ()
177 TYPE<23> = function TYPE<4> ()
178 TYPE<24> = function TYPE<8> (TYPE<4>, TYPE<4>)
179 TYPE<25> = array of TYPE<4> * 5
180 TYPE<26> = array of TYPE<12> * 2
181 TYPE<27> = array of TYPE<4> * 2
182
183 【CMINUS SYMBOL TABLE 0】
184 root symbol
185 SYMBOL<Add> = local function of TYPE<12>
186 SYMBOL<BubbleSort> = local function of TYPE<14>
187 SYMBOL<CreateAndFreeNodes> = local function of TYPE<22>
188 SYMBOL<CreateNodes> = local function of TYPE<20>
189 SYMBOL<DifferentTypes> = local function of TYPE<22>
190 SYMBOL<Fab> = local function of TYPE<15>
191 SYMBOL<FreeNodes> = local function of TYPE<21>
192 SYMBOL<GlobalA> = global variable of TYPE<4>
193 SYMBOL<GlobalB> = global variable of TYPE<4>
194 SYMBOL<GlobalC> = global constant of TYPE<4>
195 SYMBOL<GlobalD> = global constant of TYPE<4>
196 SYMBOL<IntFunc> = type of TYPE<12>
197 SYMBOL<Local> = local function of TYPE<22>
198 SYMBOL<Node> = type of TYPE<11>
199 SYMBOL<RunAll> = local function of TYPE<24>
200 SYMBOL<Sub> = local function of TYPE<12>
201 SYMBOL<SubRev> = local function of TYPE<12>
202 SYMBOL<Sum> = local function of TYPE<23>
203 SYMBOL<bool> = type of TYPE<9>
204 SYMBOL<byte> = type of TYPE<0>
205 SYMBOL<char> = type of TYPE<0>
206 SYMBOL<double> = type of TYPE<7>
207 SYMBOL<float> = type of TYPE<6>
208 SYMBOL<free> = external function of TYPE<19>
209 SYMBOL<int> = type of TYPE<4>
210 SYMBOL<malloc> = external function of TYPE<18>
211 SYMBOL<null> = type of TYPE<10>
212 SYMBOL<short> = type of TYPE<2>
213 SYMBOL<signed byte> = type of TYPE<0>
214 SYMBOL<signed int> = type of TYPE<4>
215 SYMBOL<signed short> = type of TYPE<2>
216 SYMBOL<unsigned byte> = type of TYPE<1>
217 SYMBOL<unsigned int> = type of TYPE<5>
218 SYMBOL<unsigned short> = type of TYPE<3>
219 SYMBOL<void> = type of TYPE<8>
220 SYMBOL<wchar> = type of TYPE<3>
221
222 【CMINUS SYMBOL TABLE 1】
223 previous symbol is 0
224 associated function is BubbleSort
225 SYMBOL<Count> = local 1th parameter of TYPE<4>
226 SYMBOL<Input> = local 0th parameter of TYPE<13>
227
228 【CMINUS SYMBOL TABLE 2】
229 previous symbol is 1
230 associated function is BubbleSort
231 SYMBOL<i> = local variable of TYPE<4>
232
233 【CMINUS SYMBOL TABLE 3】
234 previous symbol is 2
235 associated function is BubbleSort
236
237 【CMINUS SYMBOL TABLE 4】
238 previous symbol is 3
239 associated function is BubbleSort
240 SYMBOL<j> = local variable of TYPE<4>
241
242 【CMINUS SYMBOL TABLE 5】
243 previous symbol is 4
244 associated function is BubbleSort
245
246 【CMINUS SYMBOL TABLE 6】
247 previous symbol is 5
248 associated function is BubbleSort
249
250 【CMINUS SYMBOL TABLE 7】
251 previous symbol is 6
252 associated function is BubbleSort
253 SYMBOL<Temp> = local variable of TYPE<4>
254
255 【CMINUS SYMBOL TABLE 8】
256 previous symbol is 0
257 associated function is Fab
258 SYMBOL<Index> = local 0th parameter of TYPE<4>
259
260 【CMINUS SYMBOL TABLE 9】
261 previous symbol is 8
262 associated function is Fab
263
264 【CMINUS SYMBOL TABLE 10】
265 previous symbol is 0
266 associated function is CreateNodes
267
268 【CMINUS SYMBOL TABLE 11】
269 previous symbol is 10
270 associated function is CreateNodes
271 SYMBOL<Current> = local variable of TYPE<4>
272 SYMBOL<Head> = local variable of TYPE<16>
273 SYMBOL<Tail> = local variable of TYPE<16>
274
275 【CMINUS SYMBOL TABLE 12】
276 previous symbol is 11
277 associated function is CreateNodes
278
279 【CMINUS SYMBOL TABLE 13】
280 previous symbol is 12
281 associated function is CreateNodes
282 SYMBOL<NewNode> = local variable of TYPE<16>
283
284 【CMINUS SYMBOL TABLE 14】
285 previous symbol is 0
286 associated function is FreeNodes
287 SYMBOL<Head> = local 0th parameter of TYPE<16>
288
289 【CMINUS SYMBOL TABLE 15】
290 previous symbol is 14
291 associated function is FreeNodes
292
293 【CMINUS SYMBOL TABLE 16】
294 previous symbol is 15
295 associated function is FreeNodes
296
297 【CMINUS SYMBOL TABLE 17】
298 previous symbol is 16
299 associated function is FreeNodes
300 SYMBOL<Next> = local variable of TYPE<16>
301
302 【CMINUS SYMBOL TABLE 18】
303 previous symbol is 0
304 associated function is CreateAndFreeNodes
305
306 【CMINUS SYMBOL TABLE 19】
307 previous symbol is 18
308 associated function is CreateAndFreeNodes
309
310 【CMINUS SYMBOL TABLE 20】
311 previous symbol is 0
312 associated function is SubRev
313 SYMBOL<A> = local 0th parameter of TYPE<4>
314 SYMBOL<B> = local 1th parameter of TYPE<4>
315
316 【CMINUS SYMBOL TABLE 21】
317 previous symbol is 20
318 associated function is SubRev
319
320 【CMINUS SYMBOL TABLE 22】
321 previous symbol is 0
322 associated function is Sum
323
324 【CMINUS SYMBOL TABLE 23】
325 previous symbol is 22
326 associated function is Sum
327 SYMBOL<Index> = local variable of TYPE<4>
328 SYMBOL<Number> = local variable of TYPE<25>
329 SYMBOL<Result> = local variable of TYPE<4>
330
331 【CMINUS SYMBOL TABLE 24】
332 previous symbol is 23
333 associated function is Sum
334
335 【CMINUS SYMBOL TABLE 25】
336 previous symbol is 24
337 associated function is Sum
338
339 【CMINUS SYMBOL TABLE 26】
340 previous symbol is 0
341 associated function is Local
342
343 【CMINUS SYMBOL TABLE 27】
344 previous symbol is 26
345 associated function is Local
346 SYMBOL<LocalA> = local variable of TYPE<4>
347 SYMBOL<LocalB> = local variable of TYPE<4>
348 SYMBOL<LocalC> = local constant of TYPE<4>
349 SYMBOL<LocalD> = local constant of TYPE<4>
350
351 【CMINUS SYMBOL TABLE 28】
352 previous symbol is 0
353 associated function is Add
354 SYMBOL<a> = local 0th parameter of TYPE<4>
355 SYMBOL<b> = local 1th parameter of TYPE<4>
356
357 【CMINUS SYMBOL TABLE 29】
358 previous symbol is 28
359 associated function is Add
360
361 【CMINUS SYMBOL TABLE 30】
362 previous symbol is 0
363 associated function is Sub
364 SYMBOL<a> = local 0th parameter of TYPE<4>
365 SYMBOL<b> = local 1th parameter of TYPE<4>
366
367 【CMINUS SYMBOL TABLE 31】
368 previous symbol is 30
369 associated function is Sub
370
371 【CMINUS SYMBOL TABLE 32】
372 previous symbol is 0
373 associated function is RunAll
374 SYMBOL<a> = local 0th parameter of TYPE<4>
375 SYMBOL<b> = local 1th parameter of TYPE<4>
376
377 【CMINUS SYMBOL TABLE 33】
378 previous symbol is 32
379 associated function is RunAll
380 SYMBOL<Funcs> = local variable of TYPE<26>
381 SYMBOL<Index> = local variable of TYPE<4>
382 SYMBOL<Nums> = local variable of TYPE<27>
383
384 【CMINUS SYMBOL TABLE 34】
385 previous symbol is 33
386 associated function is RunAll
387
388 【CMINUS SYMBOL TABLE 35】
389 previous symbol is 34
390 associated function is RunAll
391
392 【CMINUS SYMBOL TABLE 36】
393 previous symbol is 0
394 associated function is DifferentTypes
395
396 【CMINUS SYMBOL TABLE 37】
397 previous symbol is 36
398 associated function is DifferentTypes
399 SYMBOL<vbool> = local variable of TYPE<9>
400 SYMBOL<vbyte> = local variable of TYPE<0>
401 SYMBOL<vchar> = local variable of TYPE<0>
402 SYMBOL<vdouble> = local variable of TYPE<7>
403 SYMBOL<vfloat> = local variable of TYPE<6>
404 SYMBOL<vint> = local variable of TYPE<4>
405 SYMBOL<vsbyte> = local variable of TYPE<0>
406 SYMBOL<vshort> = local variable of TYPE<2>
407 SYMBOL<vsint> = local variable of TYPE<4>
408 SYMBOL<vsshort> = local variable of TYPE<2>
409 SYMBOL<vubyte> = local variable of TYPE<1>
410 SYMBOL<vuint> = local variable of TYPE<5>
411 SYMBOL<vushort> = local variable of TYPE<3>
412 SYMBOL<vwchar> = local variable of TYPE<3>
413
posted on 2009-05-06 08:13
陈梓瀚(vczh) 阅读(3013)
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