2 * Lexical scanner for command line parsing
4 * Copyright 1993 Eric Youngdale
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
35 HANDLE DEBUG_hParserInput;
36 HANDLE DEBUG_hParserOutput;
38 static int DEBUG_FetchFromLine(const char* pfx, char* buf, int size);
40 #define YY_INPUT(buf,result,max_size) \
41 if ( (result = DEBUG_FetchFromLine("Wine-dbg>", buf, max_size)) < 0 ) \
42 YY_FATAL_ERROR( "FetchFromLine() in flex scanner failed" );
46 static int syntax_error;
52 IDENTIFIER [_a-zA-Z~][_a-zA-Z0-9~@]*
53 PATHNAME [/_a-zA-Z\.~][/_a-zA-Z0-9\.~@]*
71 /* set to special state when no process is loaded. */
72 if (!DEBUG_CurrProcess && YYSTATE == INITIAL) {BEGIN(NOPROCESS);}
74 <<EOF>> { return tEOF; }
75 <*>\n { BEGIN(INITIAL); syntax_error = 0; return tEOL; }
76 /* Indicates end of command. Reset state. */
78 "||" { return OP_LOR; }
79 "&&" { return OP_LAND; }
80 "==" { return OP_EQ; }
81 "!=" { return OP_NE; }
82 "<=" { return OP_LE; }
83 ">=" { return OP_GE; }
84 "<<" { return OP_SHL; }
85 ">>" { return OP_SHR; }
86 "->" { return OP_DRF; }
87 [-+<=>|&^()*/%:!~,\.] { return *yytext; }
88 "[" { return *yytext; }
89 "]" { return *yytext; }
91 "0x"{HEXDIGIT}+ { sscanf(yytext, "%x", &yylval.integer); return tNUM; }
92 {DIGIT}+ { sscanf(yytext, "%d", &yylval.integer); return tNUM; }
94 <FORMAT_EXPECTED>"/"{DIGIT}+{FORMAT} { char* last;
95 yylval.integer = strtol( yytext+1, &last, 0 ) << 8;
96 yylval.integer |= *last;
99 <FORMAT_EXPECTED>"/"{FORMAT} { yylval.integer = (1 << 8) | yytext[1]; return tFORMAT; }
101 {STRING} { yylval.string = DEBUG_MakeSymbol(yytext); return tSTRING; }
102 <ASTRING_EXPECTED>[^\n]+ { char* p = yytext; while (*p == ' ' || *p == '\t') p++;
103 yylval.string = DEBUG_MakeSymbol(p); return tSTRING; }
105 <INITIAL>info|inf|in { BEGIN(INFO_CMD); return tINFO; }
106 <INITIAL>up { BEGIN(NOCMD); return tUP; }
107 <INITIAL>down|dow|do { BEGIN(NOCMD); return tDOWN; }
108 <INITIAL>frame|fram|fra|fr { BEGIN(NOCMD); return tFRAME; }
109 <INITIAL>list|lis|li|l { BEGIN(PATH_EXPECTED); return tLIST; }
110 <INITIAL>enable|enabl|enab|ena { BEGIN(BD_CMD); return tENABLE;}
111 <INITIAL>disable|disabl|disab|disa|dis { BEGIN(BD_CMD); return tDISABLE; }
112 <INITIAL>disassemble|disassembl|disassemb|disassem|disasse|disass|disas { BEGIN(NOCMD); return tDISASSEMBLE; }
113 <INITIAL>locally|local { BEGIN(LOCAL_CMD); return tLOCAL; }
114 <INITIAL,LOCAL_CMD>display|displa|displ|disp { BEGIN(FORMAT_EXPECTED); return tDISPLAY; }
115 <INFO_CMD,BD_CMD>display|displa|displ|disp|dis|di|d { BEGIN(NOCMD); return tDISPLAY; }
116 <INITIAL>undisplay|undispla|undispl|undisp|undis|undi|und { BEGIN(NOCMD); return tUNDISPLAY; }
117 <INITIAL>delete|delet|dele|del { BEGIN(BD_CMD); return tDELETE; }
118 <INITIAL,NOPROCESS>quit|qui|qu|q { BEGIN(NOCMD); return tQUIT; }
119 <INITIAL>set|se { BEGIN(NOCMD); return tSET; }
120 <INITIAL,NOPROCESS>walk|w { BEGIN(WALK_CMD); return tWALK; }
121 <INITIAL>x { BEGIN(FORMAT_EXPECTED); return tEXAM; }
122 <INITIAL,NOPROCESS>help|hel|he|"?" { BEGIN(HELP_CMD); return tHELP; }
124 <INITIAL>backtrace|backtrac|backtra|backt|back|bac|ba|bt { BEGIN(NOCMD); return tBACKTRACE; }
125 <INITIAL>where|wher|whe { BEGIN(NOCMD); return tBACKTRACE; }
127 <INITIAL>cont|con|co|c { BEGIN(NOCMD); return tCONT; }
128 <INITIAL>pass|pas|pa { BEGIN(NOCMD); return tPASS; }
129 <INITIAL>condition|conditio|conditi|condit|condi|cond { BEGIN(NOCMD); return tCOND; }
130 <INITIAL>step|ste|st|s { BEGIN(NOCMD); return tSTEP; }
131 <INITIAL>next|nex|ne|n { BEGIN(NOCMD); return tNEXT; }
132 <INITIAL>stepi|si { BEGIN(NOCMD); return tSTEPI; }
133 <INITIAL>nexti|ni { BEGIN(NOCMD); return tNEXTI; }
134 <INITIAL>finish|finis|fini|fin|fi { BEGIN(NOCMD); return tFINISH; }
136 <INITIAL>abort|abor|abo { BEGIN(NOCMD); return tABORT; }
137 <INITIAL>print|prin|pri|pr|p { BEGIN(FORMAT_EXPECTED); return tPRINT; }
139 <INITIAL>mode { BEGIN(MODE_CMD); return tMODE; }
140 <INITIAL>show|sho|sh { BEGIN(SHOW_CMD); return tSHOW; }
141 <INITIAL,NOPROCESS>source|sourc|sour|src { BEGIN(PATH_EXPECTED); return tSOURCE; }
142 <INITIAL>symbolfile|symbols|symbol|sf { BEGIN(PATH_EXPECTED); return tSYMBOLFILE; }
144 <INITIAL,INFO_CMD,BD_CMD>break|brea|bre|br|b { BEGIN(NOCMD); return tBREAK; }
145 <INITIAL>watch|watc|wat { BEGIN(NOCMD); return tWATCH; }
146 <INITIAL>whatis|whati|what { BEGIN(NOCMD); return tWHATIS; }
147 <INITIAL,NOPROCESS>run|ru|r { BEGIN(ASTRING_EXPECTED); return tRUN;}
148 <INITIAL>detach|detac|deta|det { BEGIN(NOCMD); return tDETACH; }
149 <INITIAL>maintenance|maint { BEGIN(MAINT_CMD); return tMAINTENANCE; }
150 <NOPROCESS>attach|attac|atta|att { BEGIN(NOCMD); return tATTACH; }
151 <INFO_CMD>share|shar|sha { return tSHARE; }
152 <INFO_CMD>locals|local|loca|loc { return tLOCAL; }
153 <INFO_CMD,WALK_CMD>class|clas|cla { return tCLASS; }
154 <INFO_CMD,WALK_CMD>module|modul|modu|mod { return tMODULE; }
155 <INFO_CMD,WALK_CMD>process|proces|proce|proc { return tPROCESS; }
156 <INFO_CMD,WALK_CMD>threads|thread|threa|thre|thr|th { return tTHREAD; }
157 <WALK_CMD>exception|except|exc|ex { return tEXCEPTION; }
158 <INFO_CMD>registers|regs|reg|re { return tREGS; }
159 <INFO_CMD>segments|segment|segm|seg|se { return tSEGMENTS; }
160 <INFO_CMD>stack|stac|sta|st { return tSTACK; }
161 <INFO_CMD>symbol|symbo|symb|sym { BEGIN(ASTRING_EXPECTED); return tSYMBOL; }
162 <WALK_CMD>maps|map { return tMAPS; }
163 <INFO_CMD,WALK_CMD>window|windo|wind|win|wnd { return tWND; }
164 <HELP_CMD>info|inf|in { return tINFO; }
165 <MODE_CMD>vm86 { return tVM86; }
166 <MAINT_CMD>type { return tTYPE; }
168 <INITIAL,SHOW_CMD>directories|directorie|directori|director|directo|direct|direc|direc|dir {
169 BEGIN(PATH_EXPECTED); return tDIR; }
171 char { return tCHAR; }
172 short { return tSHORT; }
174 long { return tLONG; }
175 float { return tFLOAT; }
176 double { return tDOUBLE; }
177 unsigned { return tUNSIGNED; }
178 signed { return tSIGNED; }
179 struct { return tSTRUCT; }
180 union { return tUNION; }
181 enum { return tENUM; }
183 {IDENTIFIER} { yylval.string = DEBUG_MakeSymbol(yytext); return tIDENTIFIER; }
184 "$"{IDENTIFIER} { yylval.string = DEBUG_MakeSymbol(yytext+1); return tINTVAR; }
186 <PATH_EXPECTED>{PATHNAME} { yylval.string = DEBUG_MakeSymbol(yytext); return tPATH; }
188 <*>[ \t]+ /* Eat up whitespace */
190 <NOPROCESS>. { BEGIN(ASTRING_EXPECTED); yyless(0); return tNOPROCESS;}
191 <*>. { if (syntax_error == 0) {
193 DEBUG_Printf("Syntax Error (%s)\n", yytext); }
198 int yywrap(void) { return 1; }
202 #define whitespace(c) (((c) == ' ') || ((c) == '\t'))
206 /* Strip whitespace from the start and end of STRING. */
207 static void stripwhite(char *string)
211 for (i = 0; whitespace(string[i]); i++);
212 if (i) strcpy(string, string + i);
214 last = i = strlen(string) - 1;
215 if (string[last] == '\n') i--;
217 while (i > 0 && whitespace(string[i])) i--;
218 if (string[last] == '\n')
223 static int DEBUG_FetchEntireLine(const char* pfx, char** line, size_t* alloc, BOOL check_nl)
229 /* as of today, console handles can be file handles... so better use file APIs rather than
232 WriteFile(DEBUG_hParserOutput, pfx, strlen(pfx), NULL, NULL);
237 if (!ReadFile(DEBUG_hParserInput, buf_line, sizeof(buf_line) - 1, &nread, NULL) || nread == 0)
239 buf_line[nread] = '\0';
241 if (check_nl && len == 0 && nread == 1 && buf_line[0] == '\n')
244 /* store stuff at the end of last_line */
245 if (len + nread + 1 > *alloc)
248 *line = HeapReAlloc(GetProcessHeap(), 0, *line, *alloc += nread + 1);
250 *line = HeapAlloc(GetProcessHeap(), 0, *alloc += nread + 1);
252 strcpy(*line + len, buf_line);
254 } while (nread == 0 || buf_line[nread - 1] != '\n');
258 *line = HeapReAlloc(GetProcessHeap(), 0, *line, *alloc = 1);
262 /* Remove leading and trailing whitespace from the line */
267 static int DEBUG_FetchFromLine(const char* pfx, char* buf, int size)
270 static char* last_line = NULL;
271 static size_t last_line_size = 0;
272 static size_t last_line_idx = 0;
274 /* first alloc of our current buffer */
277 last_line = HeapAlloc(GetProcessHeap(), 0, last_line_size = 2);
283 /* try first to fetch the remaining of an existing line */
284 if (last_line_idx == 0)
286 /* no remaining chars to be read from last line, grab a brand new line up to '\n' */
287 DEBUG_FlushSymbols();
289 DEBUG_FetchEntireLine(pfx, &last_line, &last_line_size, TRUE);
292 len = min(strlen(last_line + last_line_idx), size - 1);
293 memcpy(buf, last_line + last_line_idx, len);
295 if ((last_line_idx += len) >= strlen(last_line))
300 int DEBUG_ReadLine(const char* pfx, char* buf, int size)
305 /* first alloc of our current buffer */
306 line = HeapAlloc(GetProcessHeap(), 0, len = 2);
311 DEBUG_FetchEntireLine(pfx, &line, &len, FALSE);
313 /* remove trailing \n */
314 if (len > 0 && line[len - 1] == '\n') len--;
315 len = min(size - 1, len);
316 memcpy(buf, line, len);
318 HeapFree(GetProcessHeap(), 0, line);
322 static char** local_symbols /* = NULL */;
323 static int next_symbol /* = 0 */;
324 static int alloc_symbol /* = 0 */;
326 char* DEBUG_MakeSymbol(const char* symbol)
328 assert(0 <= next_symbol && next_symbol < alloc_symbol + 1);
329 if (next_symbol >= alloc_symbol)
332 local_symbols = HeapAlloc(GetProcessHeap(), 0,
333 (alloc_symbol += 32) * sizeof(local_symbols[0]));
335 local_symbols = HeapReAlloc(GetProcessHeap(), 0, local_symbols,
336 (alloc_symbol += 32) * sizeof(local_symbols[0]));
337 assert(local_symbols);
339 return local_symbols[next_symbol++] = DBG_strdup(symbol);
342 void DEBUG_FlushSymbols(void)
344 while(--next_symbol >= 0) DBG_free(local_symbols[next_symbol]);