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 static int read_input(const char* pfx, char* buf, int size)
35 static char* last_line = NULL;
36 static size_t last_line_size = 0;
37 static size_t last_line_idx = 0;
39 /* first alloc of our current buffer */
42 last_line = HeapAlloc(GetProcessHeap(), 0, last_line_size = 2);
48 /* try first to fetch the remaining of an existing line */
49 if (last_line_idx == 0)
51 /* no remaining chars to be read from last line, grab a brand new line up to '\n' */
53 input_fetch_entire_line(pfx, &last_line, &last_line_size, TRUE);
56 len = min(strlen(last_line + last_line_idx), size - 1);
57 memcpy(buf, last_line + last_line_idx, len);
59 if ((last_line_idx += len) >= strlen(last_line))
64 #define YY_INPUT(buf,result,max_size) \
65 if ((result = read_input("Wine-dbg>", buf, max_size)) < 0) \
66 YY_FATAL_ERROR("read_input in flex scanner failed");
70 static int syntax_error;
76 IDENTIFIER [_a-zA-Z~][_a-zA-Z0-9~@]*
77 PATHNAME [/_a-zA-Z\.~][/_a-zA-Z0-9\.~@]*
94 /* set to special state when no process is loaded. */
95 if (!dbg_curr_process && YYSTATE == INITIAL) {BEGIN(NOPROCESS);}
97 <<EOF>> { return tEOF; }
98 <*>\n { BEGIN(INITIAL); syntax_error = 0; return tEOL; }
99 /* Indicates end of command. Reset state. */
101 "||" { return OP_LOR; }
102 "&&" { return OP_LAND; }
103 "==" { return OP_EQ; }
104 "!=" { return OP_NE; }
105 "<=" { return OP_LE; }
106 ">=" { return OP_GE; }
107 "<<" { return OP_SHL; }
108 ">>" { return OP_SHR; }
109 "->" { return OP_DRF; }
110 [-+<=>|&^()*/%:!~,\.] { return *yytext; }
111 "[" { return *yytext; }
112 "]" { return *yytext; }
114 "0x"{HEXDIGIT}+ { sscanf(yytext, "%x", &yylval.integer); return tNUM; }
115 {DIGIT}+ { sscanf(yytext, "%d", &yylval.integer); return tNUM; }
117 <FORMAT_EXPECTED>"/"{DIGIT}+{FORMAT} { char* last;
118 yylval.integer = strtol(yytext+1, &last, 0) << 8;
119 yylval.integer |= *last;
122 <FORMAT_EXPECTED>"/"{FORMAT} { yylval.integer = (1 << 8) | yytext[1]; return tFORMAT; }
124 {STRING} { yylval.string = lexeme_alloc(yytext); return tSTRING; }
125 <ASTRING_EXPECTED>[^\n]+ { char* p = yytext; while (*p == ' ' || *p == '\t') p++;
126 yylval.string = lexeme_alloc(p); return tSTRING; }
128 <INITIAL,NOPROCESS>info|inf|in { BEGIN(INFO_CMD); return tINFO; }
129 <INITIAL>up { BEGIN(NOCMD); return tUP; }
130 <INITIAL>down|dow|do { BEGIN(NOCMD); return tDOWN; }
131 <INITIAL>frame|fram|fra|fr { BEGIN(NOCMD); return tFRAME; }
132 <INITIAL>list|lis|li|l { BEGIN(PATH_EXPECTED); return tLIST; }
133 <INITIAL>enable|enabl|enab|ena { BEGIN(BD_CMD); return tENABLE;}
134 <INITIAL>disable|disabl|disab|disa|dis { BEGIN(BD_CMD); return tDISABLE; }
135 <INITIAL>disassemble|disassembl|disassemb|disassem|disasse|disass|disas { BEGIN(NOCMD); return tDISASSEMBLE; }
136 <INITIAL>locally|local { BEGIN(LOCAL_CMD); return tLOCAL; }
137 <INITIAL,LOCAL_CMD>display|displa|displ|disp { BEGIN(FORMAT_EXPECTED); return tDISPLAY; }
138 <INFO_CMD,BD_CMD>display|displa|displ|disp|dis|di|d { BEGIN(NOCMD); return tDISPLAY; }
139 <INITIAL>undisplay|undispla|undispl|undisp|undis|undi|und { BEGIN(NOCMD); return tUNDISPLAY; }
140 <INITIAL>delete|delet|dele|del { BEGIN(BD_CMD); return tDELETE; }
141 <INITIAL,NOPROCESS>quit|qui|qu|q { BEGIN(NOCMD); return tQUIT; }
142 <INITIAL>set|se { BEGIN(NOCMD); return tSET; }
143 <INITIAL>x { BEGIN(FORMAT_EXPECTED); return tEXAM; }
144 <INITIAL,NOPROCESS>help|hel|he|"?" { BEGIN(HELP_CMD); return tHELP; }
146 <INITIAL,NOPROCESS>backtrace|backtrac|backtra|backt|back|bac|ba|bt { BEGIN(NOCMD); return tBACKTRACE; }
147 <INITIAL,NOPROCESS>where|wher|whe { BEGIN(NOCMD); return tBACKTRACE; }
149 <INITIAL>cont|con|co|c { BEGIN(NOCMD); return tCONT; }
150 <INITIAL>pass|pas|pa { BEGIN(NOCMD); return tPASS; }
151 <INITIAL>condition|conditio|conditi|condit|condi|cond { BEGIN(NOCMD); return tCOND; }
152 <INITIAL>step|ste|st|s { BEGIN(NOCMD); return tSTEP; }
153 <INITIAL>next|nex|ne|n { BEGIN(NOCMD); return tNEXT; }
154 <INITIAL>stepi|si { BEGIN(NOCMD); return tSTEPI; }
155 <INITIAL>nexti|ni { BEGIN(NOCMD); return tNEXTI; }
156 <INITIAL>finish|finis|fini|fin|fi { BEGIN(NOCMD); return tFINISH; }
158 <INITIAL>abort|abor|abo { BEGIN(NOCMD); return tABORT; }
159 <INITIAL>print|prin|pri|pr|p { BEGIN(FORMAT_EXPECTED); return tPRINT; }
161 <INITIAL>mode { BEGIN(MODE_CMD); return tMODE; }
162 <INITIAL>show|sho|sh { BEGIN(SHOW_CMD); return tSHOW; }
163 <INITIAL,NOPROCESS>source|sourc|sour|src { BEGIN(PATH_EXPECTED); return tSOURCE; }
164 <INITIAL>symbolfile|symbols|symbol|sf { BEGIN(PATH_EXPECTED); return tSYMBOLFILE; }
166 <INITIAL,INFO_CMD,BD_CMD>break|brea|bre|br|b { BEGIN(NOCMD); return tBREAK; }
167 <INITIAL>watch|watc|wat { BEGIN(NOCMD); return tWATCH; }
168 <INITIAL>whatis|whati|what { BEGIN(NOCMD); return tWHATIS; }
169 <INITIAL,NOPROCESS>run|ru|r { BEGIN(ASTRING_EXPECTED); return tRUN;}
170 <INITIAL>detach|detac|deta|det { BEGIN(NOCMD); return tDETACH; }
171 <INITIAL>maintenance|maint { BEGIN(MAINT_CMD); return tMAINTENANCE; }
172 <NOPROCESS>attach|attac|atta|att { BEGIN(NOCMD); return tATTACH; }
173 <INFO_CMD>share|shar|sha { return tSHARE; }
174 <INFO_CMD>locals|local|loca|loc { return tLOCAL; }
175 <INFO_CMD>class|clas|cla { return tCLASS; }
176 <INFO_CMD>process|proces|proce|proc { return tPROCESS; }
177 <INFO_CMD>threads|thread|threa|thre|thr|th { return tTHREAD; }
178 <INFO_CMD>exception|except|exc|ex { return tEXCEPTION; }
179 <INFO_CMD>registers|regs|reg|re { return tREGS; }
180 <INFO_CMD>segments|segment|segm|seg|se { return tSEGMENTS; }
181 <INFO_CMD>stack|stac|sta|st { return tSTACK; }
182 <INFO_CMD>symbol|symbo|symb|sym { BEGIN(ASTRING_EXPECTED); return tSYMBOL; }
183 <INFO_CMD>maps|map { return tMAPS; }
184 <INFO_CMD>window|windo|wind|win|wnd { return tWND; }
185 <HELP_CMD>info|inf|in { return tINFO; }
186 <MODE_CMD>vm86 { return tVM86; }
187 <MAINT_CMD>type { return tTYPE; }
189 <INITIAL,SHOW_CMD>directories|directorie|directori|director|directo|direct|direc|direc|dir {
190 BEGIN(PATH_EXPECTED); return tDIR; }
192 char { return tCHAR; }
193 short { return tSHORT; }
195 long { return tLONG; }
196 float { return tFLOAT; }
197 double { return tDOUBLE; }
198 unsigned { return tUNSIGNED; }
199 signed { return tSIGNED; }
200 struct { return tSTRUCT; }
201 union { return tUNION; }
202 enum { return tENUM; }
205 {IDENTIFIER} { yylval.string = lexeme_alloc(yytext); return tIDENTIFIER; }
206 "$"{IDENTIFIER} { yylval.string = lexeme_alloc(yytext+1); return tINTVAR; }
208 <PATH_EXPECTED>{PATHNAME} { yylval.string = lexeme_alloc(yytext); return tPATH; }
210 <*>[ \t]+ /* Eat up whitespace */
212 <NOPROCESS>. { BEGIN(ASTRING_EXPECTED); yyless(0); return tNOPROCESS;}
213 <*>. { if (syntax_error == 0) { syntax_error++; dbg_printf("Syntax Error (%s)\n", yytext); } }
217 int yywrap(void) { return 1; }
220 static char** local_lexemes /* = NULL */;
221 static int next_lexeme /* = 0 */;
222 static int alloc_lexeme /* = 0 */;
224 char* lexeme_alloc(const char* lexeme)
226 assert(0 <= next_lexeme && next_lexeme < alloc_lexeme + 1);
227 if (next_lexeme >= alloc_lexeme)
230 local_lexemes = dbg_heap_realloc(local_lexemes, alloc_lexeme * sizeof(local_lexemes[0]));
231 assert(local_lexemes);
233 return local_lexemes[next_lexeme++] = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(lexeme) + 1), lexeme);
236 void lexeme_flush(void)
238 while (--next_lexeme >= 0) HeapFree(GetProcessHeap(), 0, local_lexemes[next_lexeme]);