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
32 HANDLE DEBUG_hParserInput;
33 HANDLE DEBUG_hParserOutput;
35 static int DEBUG_FetchFromLine(const char* pfx, char* buf, int size);
37 #define YY_INPUT(buf,result,max_size) \
38 if ( (result = DEBUG_FetchFromLine("Wine-dbg>", buf, max_size)) < 0 ) \
39 YY_FATAL_ERROR( "ReadLine() in flex scanner failed" );
43 static int syntax_error;
49 IDENTIFIER [_a-zA-Z~][_a-zA-Z0-9~@]*
50 PATHNAME [/_a-zA-Z\.~][/_a-zA-Z0-9\.~@]*
66 /* set to special state when no process is loaded. */
67 if (!DEBUG_CurrProcess && YYSTATE == INITIAL) {BEGIN(NOPROCESS);}
69 <<EOF>> { return tEOF; }
70 <*>\n { BEGIN(INITIAL); syntax_error = 0; return tEOL; }
71 /* Indicates end of command. Reset state. */
73 "||" { return OP_LOR; }
74 "&&" { return OP_LAND; }
75 "==" { return OP_EQ; }
76 "!=" { return OP_NE; }
77 "<=" { return OP_LE; }
78 ">=" { return OP_GE; }
79 "<<" { return OP_SHL; }
80 ">>" { return OP_SHR; }
81 "->" { return OP_DRF; }
82 [-+<=>|&^()*/%:!~,\.] { return *yytext; }
83 "[" { return *yytext; }
84 "]" { return *yytext; }
86 "0x"{HEXDIGIT}+ { sscanf(yytext, "%x", &yylval.integer); return tNUM; }
87 {DIGIT}+ { sscanf(yytext, "%d", &yylval.integer); return tNUM; }
89 <FORMAT_EXPECTED>"/"{DIGIT}+{FORMAT} { char* last;
90 yylval.integer = strtol( yytext+1, &last, 0 ) << 8;
91 yylval.integer |= *last;
94 <FORMAT_EXPECTED>"/"{FORMAT} { yylval.integer = (1 << 8) | yytext[1]; return tFORMAT; }
96 {STRING} { yylval.string = DEBUG_MakeSymbol(yytext); return tSTRING; }
97 <ASTRING_EXPECTED>[^\n]+ { char* p = yytext; while (*p == ' ' || *p == '\t') p++;
98 yylval.string = DEBUG_MakeSymbol(p); return tSTRING; }
100 <INITIAL>info|inf|in { BEGIN(INFO_CMD); return tINFO; }
101 <INITIAL>up { BEGIN(NOCMD); return tUP; }
102 <INITIAL>down|dow|do { BEGIN(NOCMD); return tDOWN; }
103 <INITIAL>frame|fram|fra|fr { BEGIN(NOCMD); return tFRAME; }
104 <INITIAL>list|lis|li|l { BEGIN(PATH_EXPECTED); return tLIST; }
105 <INITIAL>enable|enabl|enab|ena { BEGIN(NOCMD); return tENABLE;}
106 <INITIAL>disable|disabl|disab|disa|dis { BEGIN(NOCMD); return tDISABLE; }
107 <INITIAL>disassemble|disassembl|disassemb|disassem|disasse|disass|disas { BEGIN(NOCMD); return tDISASSEMBLE; }
108 <INITIAL,INFO_CMD,DEL_CMD>display|displa|displ|disp { BEGIN(FORMAT_EXPECTED); return tDISPLAY; }
109 <INITIAL>undisplay|undispla|undispl|undisp|undis|undi|und { BEGIN(NOCMD); return tUNDISPLAY; }
110 <INITIAL>delete|delet|dele|del { BEGIN(DEL_CMD); return tDELETE; }
111 <INITIAL,NOPROCESS>quit|qui|qu|q { BEGIN(NOCMD); return tQUIT; }
112 <INITIAL>set|se { BEGIN(NOCMD); return tSET; }
113 <INITIAL,NOPROCESS>walk|w { BEGIN(WALK_CMD); return tWALK; }
114 <INITIAL>x { BEGIN(FORMAT_EXPECTED); return tEXAM; }
115 <INITIAL,NOPROCESS>help|hel|he|"?" { BEGIN(HELP_CMD); return tHELP; }
117 <INITIAL>backtrace|backtrac|backtra|backt|back|bac|ba|bt { BEGIN(NOCMD); return tBACKTRACE; }
118 <INITIAL>where|wher|whe { BEGIN(NOCMD); return tBACKTRACE; }
120 <INITIAL>cont|con|co|c { BEGIN(NOCMD); return tCONT; }
121 <INITIAL>pass|pas|pa { BEGIN(NOCMD); return tPASS; }
122 <INITIAL>condition|conditio|conditi|condit|condi|cond { BEGIN(NOCMD); return tCOND; }
123 <INITIAL>step|ste|st|s { BEGIN(NOCMD); return tSTEP; }
124 <INITIAL>next|nex|ne|n { BEGIN(NOCMD); return tNEXT; }
125 <INITIAL>stepi|si { BEGIN(NOCMD); return tSTEPI; }
126 <INITIAL>nexti|ni { BEGIN(NOCMD); return tNEXTI; }
127 <INITIAL>finish|finis|fini|fin|fi { BEGIN(NOCMD); return tFINISH; }
129 <INITIAL>abort|abor|abo { BEGIN(NOCMD); return tABORT; }
130 <INITIAL>print|prin|pri|pr|p { BEGIN(FORMAT_EXPECTED); return tPRINT; }
132 <INITIAL>mode { BEGIN(MODE_CMD); return tMODE; }
133 <INITIAL>show|sho|sh { BEGIN(SHOW_CMD); return tSHOW; }
134 <INITIAL,NOPROCESS>source|sourc|sour|src { BEGIN(PATH_EXPECTED); return tSOURCE; }
135 <INITIAL>symbolfile|symbols|symbol|sf { BEGIN(PATH_EXPECTED); return tSYMBOLFILE; }
137 <INITIAL,INFO_CMD,DEL_CMD>break|brea|bre|br|b { BEGIN(NOCMD); return tBREAK; }
138 <INITIAL>watch|watc|wat { BEGIN(NOCMD); return tWATCH; }
139 <INITIAL>whatis|whati|what { BEGIN(NOCMD); return tWHATIS; }
140 <INITIAL,NOPROCESS>run|ru|r { BEGIN(ASTRING_EXPECTED); return tRUN;}
141 <INITIAL>detach|detac|deta|det { BEGIN(NOCMD); return tDETACH; }
142 <NOPROCESS>attach|attac|atta|att { BEGIN(NOCMD); return tATTACH; }
143 <INFO_CMD>share|shar|sha { return tSHARE; }
144 <INFO_CMD>locals|local|loca|loc { return tLOCAL; }
145 <INFO_CMD,WALK_CMD>class|clas|cla { return tCLASS; }
146 <INFO_CMD,WALK_CMD>module|modul|modu|mod { return tMODULE; }
147 <INFO_CMD,WALK_CMD>queue|queu|que { return tQUEUE; }
148 <INFO_CMD,WALK_CMD>process|proces|proce|proc { return tPROCESS; }
149 <INFO_CMD,WALK_CMD>threads|thread|threa|thre|thr|th { return tTHREAD; }
150 <INFO_CMD,WALK_CMD>modref|modre|modr { return tMODREF; }
151 <INFO_CMD>registers|regs|reg|re { return tREGS; }
152 <INFO_CMD>segments|segment|segm|seg|se { return tSEGMENTS; }
153 <INFO_CMD>stack|stac|sta|st { return tSTACK; }
154 <INFO_CMD>maps|map { return tMAPS; }
155 <INFO_CMD,WALK_CMD>window|windo|wind|win|wnd { return tWND; }
156 <HELP_CMD>info|inf|in { return tINFO; }
157 <MODE_CMD>vm86 { return tVM86; }
159 <INITIAL,SHOW_CMD>directories|directorie|directori|director|directo|direct|direc|direc|dir {
160 BEGIN(PATH_EXPECTED); return tDIR; }
162 char { return tCHAR; }
163 short { return tSHORT; }
165 long { return tLONG; }
166 float { return tFLOAT; }
167 double { return tDOUBLE; }
168 unsigned { return tUNSIGNED; }
169 signed { return tSIGNED; }
170 struct { return tSTRUCT; }
171 union { return tUNION; }
172 enum { return tENUM; }
174 {IDENTIFIER} { yylval.string = DEBUG_MakeSymbol(yytext); return tIDENTIFIER; }
175 "$"{IDENTIFIER} { yylval.string = DEBUG_MakeSymbol(yytext+1); return tINTVAR; }
177 <PATH_EXPECTED>{PATHNAME} { yylval.string = DEBUG_MakeSymbol(yytext); return tPATH; }
179 <*>[ \t]+ /* Eat up whitespace */
181 <NOPROCESS>. { BEGIN(ASTRING_EXPECTED); yyless(0); return tNOPROCESS;}
182 <*>. { if (syntax_error == 0) {
184 DEBUG_Printf(DBG_CHN_MESG, "Syntax Error (%s)\n", yytext); }
189 int yywrap(void) { return 1; }
193 #define whitespace(c) (((c) == ' ') || ((c) == '\t'))
197 /* Strip whitespace from the start and end of STRING. */
198 static void stripwhite(char *string)
202 for (i = 0; whitespace(string[i]); i++);
203 if (i) strcpy(string, string + i);
205 last = i = strlen(string) - 1;
206 if (string[last] == '\n') i--;
208 while (i > 0 && whitespace(string[i])) i--;
209 if (string[last] == '\n')
214 static int DEBUG_FetchEntireLine(const char* pfx, char** line, size_t* alloc, BOOL check_nl)
220 /* as of today, console handles can be file handles... so better use file APIs rather than
223 WriteFile(DEBUG_hParserOutput, pfx, strlen(pfx), NULL, NULL);
228 if (!ReadFile(DEBUG_hParserInput, buf_line, sizeof(buf_line) - 1, &nread, NULL) || nread == 0)
230 buf_line[nread] = '\0';
232 if (check_nl && len == 0 && nread == 1 && buf_line[0] == '\n')
235 /* store stuff at the end of last_line */
236 if (len + nread + 1 > *alloc)
238 *line = HeapReAlloc(GetProcessHeap(), 0, *line, *alloc += nread + 1);
240 strcpy(*line + len, buf_line);
242 } while (nread == 0 || buf_line[nread - 1] != '\n');
246 *line = HeapReAlloc(GetProcessHeap(), 0, *line, *alloc = 1);
248 strcpy(*line + len, buf_line);
250 } while (nread == 0 || buf_line[nread - 1] != '\n');
252 /* Remove leading and trailing whitespace from the line */
257 static int DEBUG_FetchFromLine(const char* pfx, char* buf, int size)
260 static char* last_line = NULL;
261 static size_t last_line_size = 0;
262 static size_t last_line_idx = 0;
264 /* first alloc of our current buffer */
267 last_line = HeapAlloc(GetProcessHeap(), 0, last_line_size = 2);
273 /* try first to fetch the remaining of an existing line */
274 if (last_line_idx == 0)
276 /* no remaining chars to be read from last line, grab a brand new line up to '\n' */
277 DEBUG_FlushSymbols();
279 DEBUG_FetchEntireLine(pfx, &last_line, &last_line_size, TRUE);
282 len = min(strlen(last_line + last_line_idx), size - 1);
283 memcpy(buf, last_line + last_line_idx, len);
285 if ((last_line_idx += len) >= strlen(last_line))
290 int DEBUG_ReadLine(const char* pfx, char* buf, int size)
295 DEBUG_FetchEntireLine(pfx, &line, &len, FALSE);
296 len = min(size, len);
297 memcpy(buf, line, len - 1);
302 static char** local_symbols /* = NULL */;
303 static int next_symbol /* = 0 */;
304 static int alloc_symbol /* = 0 */;
306 char* DEBUG_MakeSymbol(const char* symbol)
308 assert(0 <= next_symbol && next_symbol < alloc_symbol + 1);
309 if (next_symbol >= alloc_symbol)
311 local_symbols = HeapReAlloc(GetProcessHeap(), 0, local_symbols,
312 (alloc_symbol += 32) * sizeof(local_symbols[0]));
313 assert(local_symbols);
315 return local_symbols[next_symbol++] = DBG_strdup(symbol);
318 void DEBUG_FlushSymbols(void)
320 while(--next_symbol >= 0) DBG_free(local_symbols[next_symbol]);