summaryrefslogtreecommitdiffstats
path: root/src/declinfo.l
blob: af94569ae1edd009462cbae41fc5d691450aafcf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
/******************************************************************************
 *
 * 
 *
 * Copyright (C) 1997-2015 by Dimitri van Heesch.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation under the terms of the GNU General Public License is hereby 
 * granted. No representations are made about the suitability of this software 
 * for any purpose. It is provided "as is" without express or implied warranty.
 * See the GNU General Public License for more details.
 *
 * Documents produced by Doxygen are derivative works derived from the
 * input used in their production; they are not affected by this license.
 *
 */
%option never-interactive
%option prefix="declinfoYY"
%option nounput
%option noyywrap
%option reentrant
%option extra-type="struct declinfoYY_state *"

%{

/*
 *	includes
 */
#include <stdio.h>
//#include <iostream.h>
#include <assert.h>
#include <ctype.h>

#include "declinfo.h"
#include "util.h"
#include "message.h"
#include "types.h"

#define YY_NO_INPUT 1
#define YY_NO_UNISTD_H 1
#define YY_NEVER_INTERACTIVE 1
  
/* -----------------------------------------------------------------
 *
 *	statics
 */
struct declinfoYY_state
{
     const char  *inputString;
     int          inputPosition;
     QCString     scope;
     QCString     className;
     QCString     classTempList;
     QCString     funcTempList;
     QCString     type;
     QCString     name;
     QCString     args;
     int          sharpCount;
     bool         classTempListFound;
     bool         funcTempListFound;
     QCString     exceptionString;
     bool         insideObjC;
     bool         insidePHP;
};

static const char *stateToString(int state);
static void addType(yyscan_t yyscanner);
static void addTypeName(yyscan_t yyscanner);
static int yyread(char *buf,int max_size, yyscan_t yyscanner);

/* -----------------------------------------------------------------
 */
#undef	YY_INPUT
#define	YY_INPUT(buf,result,max_size) result=yyread(buf,max_size,yyscanner);
%}

B       [ \t]
ID	"$"?([a-z_A-Z\x80-\xFF][a-z_A-Z0-9\x80-\xFF]*)|(@[0-9]+)

%x      Start
%x	Template
%x	ReadArgs
%x	Operator
%x	FuncPtr
%x	EndTemplate
%x	StripTempArgs
%x	SkipSharp
%x      ReadExceptions

%%

<Start>"operator"/({B}*"["{B}*"]")* 	{ // operator rule must be before {ID} rule
  				  yyextra->name += yytext;
  				  BEGIN(Operator);
  				}
<Start>{ID}{B}*"("{B}*{ID}{B}*")" { // Objective-C class categories
  				  if (!yyextra->insideObjC) 
				  {
				    REJECT;
				  }
				  else 
				  {
				    yyextra->name += yytext;
				  }
  				}
<Start>([~!]{B}*)?{ID}{B}*"["{B}*"]" { // PHP
  				  if (!yyextra->insidePHP)
				  {
				    REJECT;
				  }
  				  addTypeName(yyscanner);
				  yyextra->name += removeRedundantWhiteSpace(yytext);
  				}
<Start>([~!]{B}*)?{ID}/({B}*"["{B}*"]")* { // the []'s are for Java, 
                                        // the / was add to deal with multi-
                                        // dimensional C++ arrays like A[][15]
                                        // the leading ~ is for a destructor
                                        // the leading ! is for a C++/CLI finalizer (see bug 456475 and 635198)
  				  addTypeName(yyscanner);
				  yyextra->name += removeRedundantWhiteSpace(yytext);
  				}
<Start>{B}*"::"{B}*		{ // found a yyextra->scope specifier
 				  if (!yyextra->scope.isEmpty())
				  {
				    yyextra->scope+="::"+yyextra->name; // add yyextra->name to yyextra->scope
				  }
				  else
				  {
  				    yyextra->scope = yyextra->name.copy(); // yyextra->scope becomes yyextra->name
				  }
				  yyextra->name.resize(0);
  				}
<Start>{B}*":"			{ // Objective-C argument separator
  				  yyextra->name+=yytext;
  				}
<Start>[*&]+			{
  				  addType(yyscanner);
  				  yyextra->type+=yytext;
  				}
<Start>{B}+			{
  				  addType(yyscanner);
  				}
<Start>{B}*"("({ID}"::")*{B}*[&*]({B}*("const"|"volatile"){B}+)?	{
  				  addType(yyscanner);
				  QCString text=yytext;
				  yyextra->type+=text.stripWhiteSpace();
  				}
<Start>{B}*")"			{
  				  yyextra->type+=")";
  				}
<Start>{B}*"("			{ // TODO: function pointers
  				  yyextra->args+="(";
  				  BEGIN(ReadArgs);
  				}
<Start>{B}*"["			{
  				  yyextra->args+="[";
				  BEGIN(ReadArgs);
  				}
<Start>{B}*"<"			{
  				  yyextra->name+="<";
				  yyextra->sharpCount=0;
  				  BEGIN(Template);
  				}
<Template>"<<"			{ yyextra->name+="<<"; }
<Template>">>"			{ yyextra->name+=">>"; }
<Template>"<"			{
  				  yyextra->name+="<";
  				  yyextra->sharpCount++;
  				}
<Template>">"			{
  				  yyextra->name+=">";
  				  if (yyextra->sharpCount)
				    --yyextra->sharpCount;
				  else
				  {
				    BEGIN(Start);
				  }
  				}
<Template>.			{
  				  yyextra->name+=*yytext;
  				}
<Operator>{B}*"("{B}*")"{B}*"<>"{B}*/"("	{
  				  yyextra->name+="() <>";
				  BEGIN(ReadArgs);
  				}
<Operator>{B}*"("{B}*")"{B}*/"("	{
  				  yyextra->name+="()";
				  BEGIN(ReadArgs);
  				}
<Operator>[^(]*{B}*("<>"{B}*)?/"(" {
  				  yyextra->name+=yytext;
				  BEGIN(ReadArgs);
  				}
<ReadArgs>"throw"{B}*"("	{
  				  yyextra->exceptionString="throw(";
				  BEGIN(ReadExceptions);
  				}
<ReadArgs>.			{
  				  yyextra->args+=*yytext;
  				}
<ReadExceptions>.		{
  				  yyextra->exceptionString+=*yytext;
  				}
<*>.
<*>\n

%%

static void addType(yyscan_t yyscanner)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  //printf("addType() yyextra->type='%s' yyextra->scope='%s' yyextra->name='%s'\n",
  //       yyextra->type.data(),yyextra->scope.data(),yyextra->name.data());
  if (yyextra->name.isEmpty() && yyextra->scope.isEmpty()) return;
  if (!yyextra->type.isEmpty()) yyextra->type+=" ";
  if (!yyextra->scope.isEmpty()) yyextra->type+=yyextra->scope+"::";
  yyextra->type+=yyextra->name;
  yyextra->scope.resize(0);
  yyextra->name.resize(0);
}

static void addTypeName(yyscan_t yyscanner)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  //printf("addTypeName() yyextra->type='%s' yyextra->scope='%s' yyextra->name='%s'\n",
  //       yyextra->type.data(),yyextra->scope.data(),yyextra->name.data());
  if (yyextra->name.isEmpty() || 
      yyextra->name.at(yyextra->name.length()-1)==':')  // end of Objective-C keyword => append to yyextra->name not yyextra->type
  {
    return;
  }
  if (!yyextra->type.isEmpty()) yyextra->type+=' ';
  yyextra->type+=yyextra->name;
  yyextra->name.resize(0);
}

static int yyread(char *buf,int max_size, yyscan_t yyscanner)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
    int c=0;
    while( c < max_size && yyextra->inputString[yyextra->inputPosition] )
    {
	*buf = yyextra->inputString[yyextra->inputPosition++] ;
	c++; buf++;
    }
    return c;
}

/*@ public interface------------------------------------------------------------
 */
static yyscan_t g_yyscanner;
static struct declinfoYY_state g_declinfo_extra;

void parseFuncDecl(const QCString &decl,const SrcLangExt lang,QCString &cl,QCString &t,
                   QCString &n,QCString &a,QCString &ftl,QCString &exc)
{
  if (decl.isEmpty())
  {
    return;
  }
  declinfoYYlex_init_extra(&g_declinfo_extra, &g_yyscanner);
  struct yyguts_t *yyg = (struct yyguts_t*)g_yyscanner;

#ifdef FLEX_DEBUG
  declinfoYYset_debug(1,g_yyscanner);
#endif

  printlex(yy_flex_debug, TRUE, __FILE__, NULL);
  yyextra->inputString   = decl;
  //printf("Input='%s'\n",yyextra->inputString);
  yyextra->inputPosition      = 0;
  yyextra->classTempListFound = FALSE;
  yyextra->funcTempListFound  = FALSE;
  yyextra->insideObjC = lang==SrcLangExt_ObjC;
  yyextra->insidePHP  = lang==SrcLangExt_PHP;
  yyextra->scope.resize(0);
  yyextra->className.resize(0);
  yyextra->classTempList.resize(0);
  yyextra->funcTempList.resize(0);
  yyextra->name.resize(0);
  yyextra->type.resize(0);
  yyextra->args.resize(0);
  yyextra->exceptionString.resize(0);
  // first we try to find the yyextra->type, yyextra->scope, yyextra->name and arguments
  declinfoYYrestart( yyin, g_yyscanner );
  BEGIN( Start );
  declinfoYYlex(g_yyscanner);

  //printf("yyextra->type='%s' class='%s' yyextra->name='%s' yyextra->args='%s'\n",
  //        yyextra->type.data(),yyextra->scope.data(),yyextra->name.data(),yyextra->args.data());

  int nb = yyextra->name.findRev('[');
  if (nb!=-1 && yyextra->args.isEmpty()) // correct for [] in yyextra->name ambiguity (due to Java return yyextra->type allowing [])
  {
    yyextra->args.prepend(yyextra->name.right(yyextra->name.length()-nb));
    yyextra->name=yyextra->name.left(nb);
  }

#if 0
  {
    int l=yyextra->scope.length();
    int i=0;
    int skipCount=0;
    cl.resize(0);
    ctl.resize(0);
    for (i=0;i<l;i++)
    {
      char c=yyextra->scope.at(i);
      if (c=='<') 
	skipCount++;
      else if (c=='>') 
	skipCount--;
      else if (skipCount==0) 
	cl+=c;
    }
  }
  cl=stripTemplateSpecifiersFromScope(removeRedundantWhiteSpace(yyextra->scope),FALSE); 
  ctl.resize(0);
#endif

  cl=yyextra->scope;
  n=removeRedundantWhiteSpace(yyextra->name);
  int il,ir;
  if ((il=n.find('<'))!=-1 && (ir=n.findRev('>'))!=-1)
    // TODO: handle cases like where n="operator<< <T>" 
  {
    ftl=removeRedundantWhiteSpace(n.right(n.length()-il));
    n=n.left(il);
  }
  
  //ctl=yyextra->classTempList.copy();
  //ftl=yyextra->funcTempList.copy();
  t=removeRedundantWhiteSpace(yyextra->type);
  a=removeRedundantWhiteSpace(yyextra->args);
  exc=removeRedundantWhiteSpace(yyextra->exceptionString);
  
  if (!t.isEmpty() && t.at(t.length()-1)==')') // for function pointers
  {
    a.prepend(")");
    t=t.left(t.length()-1);
  }
  //printf("yyextra->type='%s' class='%s' yyextra->name='%s' yyextra->args='%s'\n",
  //        t.data(),cl.data(),n.data(),a.data());

  printlex(yy_flex_debug, FALSE, __FILE__, NULL);
  declinfoYYlex_destroy(g_yyscanner);
  return;
}

#if 0
void dumpDecl(const char *s)
{
  QCString yyextra->className;
  QCString classTNames;
  QCString yyextra->type;
  QCString yyextra->name;
  QCString yyextra->args;
  QCString funcTNames;
  msg("-----------------------------------------\n");
  parseFuncDecl(s,yyextra->className,classTNames,yyextra->type,yyextra->name,yyextra->args,funcTNames);
  msg("yyextra->type='%s' class='%s' classTempl='%s' yyextra->name='%s' "
         "funcTemplateNames='%s' yyextra->args='%s'\n",
	    yyextra->type.data(),yyextra->className.data(),classTNames.data(),
	    yyextra->name.data(),funcTNames.data(),yyextra->args.data()
	);
}

// some test code
int main()
{
  dumpDecl("A < T > :: Value * A < T > :: getValue < S > ( const A < T > & a )");
  dumpDecl("const A<T>::Value* A<T>::getValue<S>(const A<T>&a)");
  dumpDecl("func()");
  dumpDecl("friend void bla<>()");
  dumpDecl("yyextra->name< T > :: operator () (int bla)");
  dumpDecl("yyextra->name< T > :: operator << (int bla)");
  dumpDecl("yyextra->name< T > :: operator << <> (int bla)");
  dumpDecl("yyextra->className::func()");
  dumpDecl("void ( * yyextra->Name < T > :: bla ) ( int, char * )"); 
}
#endif


#include "declinfo.l.h"