git.oblomov.eu Git - wine/blob - debugger/debug.l

   1 /* -*-C-*-
   2  * Lexical scanner for command line parsing
   3  *
   4  * Copyright 1993 Eric Youngdale
   5  *           2000 Eric Pouech
   6  */
   7
   8 %{
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include "debugger.h"
  12 #include "y.tab.h"
  13
  14 #ifndef DONT_USE_READLINE
  15 #undef YY_INPUT
  16 #define YY_INPUT(buf,result,max_size) \
  17         if ( (result = dbg_read((char *) buf, max_size )) < 0 ) \
  18             YY_FATAL_ERROR( "read() in flex scanner failed" );
  19
  20 static int dbg_read(char * buf, int size);
  21
  22 #endif  /* DONT_USE_READLINE */
  23
  24 #define YY_NO_UNPUT
  25
  26 static int syntax_error;
  27 %}
  28
  29 DIGIT      [0-9]
  30 HEXDIGIT   [0-9a-fA-F]
  31 FORMAT     [ubcdiswx]
  32 IDENTIFIER [_a-zA-Z~][_a-zA-Z0-9~@]*
  33 PATHNAME   [/_a-zA-Z\.~][/_a-zA-Z0-9\.~@]*
  34 STRING     \"[^\n"]+\"
  35
  36 %s FORMAT_EXPECTED
  37 %s PATH_EXPECTED
  38 %s INFO_CMD
  39 %s HELP_CMD
  40 %s DEL_CMD
  41 %s WALK_CMD
  42 %s SHOW_CMD
  43 %s MODE_CMD
  44 %s NOCMD
  45
  46 %x ASTRING_EXPECTED
  47 %x NOPROCESS
  48 %%
  49                                         /* set to special state when no process is loaded. */
  50                                         if (!DEBUG_CurrProcess && YYSTATE == INITIAL) {BEGIN(NOPROCESS);}
  51
  52 <*>\n                                   { BEGIN(INITIAL); syntax_error = 0; return tEOL; }
  53                                         /* Indicates end of command. Reset state. */
  54
  55 "||"                                    { return OP_LOR; }
  56 "&&"                                    { return OP_LAND; }
  57 "=="                                    { return OP_EQ; }
  58 "!="                                    { return OP_NE; }
  59 "<="                                    { return OP_LE; }
  60 ">="                                    { return OP_GE; }
  61 "<<"                                    { return OP_SHL; }
  62 ">>"                                    { return OP_SHR; }
  63 "->"                                    { return OP_DRF; }
  64 [-+<=>|&^()*/%:!~,\.]                   { return *yytext; }
  65 "["                                     { return *yytext; }
  66 "]"                                     { return *yytext; }
  67
  68 "0x"{HEXDIGIT}+                         { sscanf(yytext, "%x", &yylval.integer); return tNUM; }
  69 {DIGIT}+                                { sscanf(yytext, "%d", &yylval.integer); return tNUM; }
  70
  71 <FORMAT_EXPECTED>"/"{DIGIT}+{FORMAT}    { char* last;
  72                                           yylval.integer = strtol( yytext+1, &last, 0 ) << 8;
  73                                           yylval.integer |= *last;
  74                                           return tFORMAT; }
  75
  76 <FORMAT_EXPECTED>"/"{FORMAT}            { yylval.integer = (1 << 8) | yytext[1]; return tFORMAT; }
  77
  78 {STRING}                                { yylval.string = DEBUG_MakeSymbol(yytext); return tSTRING; }
  79 <ASTRING_EXPECTED>[^\n]+                { char* p = yytext; while (*p == ' ' || *p == '\t') p++;
  80                                           yylval.string = DEBUG_MakeSymbol(p); return tSTRING; }
  81
  82 <INITIAL>info|inf|in                    { BEGIN(INFO_CMD); return tINFO; }
  83 <INITIAL>up                             { BEGIN(NOCMD); return tUP; }
  84 <INITIAL>down|dow|do                    { BEGIN(NOCMD); return tDOWN; }
  85 <INITIAL>frame|fram|fra|fr              { BEGIN(NOCMD); return tFRAME; }
  86 <INITIAL>list|lis|li|l                  { BEGIN(PATH_EXPECTED); return tLIST; }
  87 <INITIAL>enable|enabl|enab|ena          { BEGIN(NOCMD); return tENABLE;}
  88 <INITIAL>disable|disabl|disab|disa|dis  { BEGIN(NOCMD); return tDISABLE; }
  89 <INITIAL>disassemble|disassembl|disassemb|disassem|disasse|disass|disas { BEGIN(NOCMD); return tDISASSEMBLE; }
  90 <INITIAL,INFO_CMD,DEL_CMD>display|displa|displ|disp     { BEGIN(FORMAT_EXPECTED); return tDISPLAY; }
  91 <INITIAL>undisplay|undispla|undispl|undisp|undis|undi|und       { BEGIN(NOCMD); return tUNDISPLAY; }
  92 <INITIAL>delete|delet|dele|del          { BEGIN(DEL_CMD); return tDELETE; }
  93 <INITIAL,NOPROCESS>quit|qui|qu|q        { BEGIN(NOCMD); return tQUIT; }
  94 <INITIAL>set|se                         { BEGIN(NOCMD); return tSET; }
  95 <INITIAL,NOPROCESS>walk|w               { BEGIN(WALK_CMD); return tWALK; }
  96 <INITIAL>x                              { BEGIN(FORMAT_EXPECTED); return tEXAM; }
  97 <INITIAL,NOPROCESS>help|hel|he|"?"              { BEGIN(HELP_CMD); return tHELP; }
  98
  99 <INITIAL>backtrace|backtrac|backtra|backt|back|bac|ba|bt { BEGIN(NOCMD); return tBACKTRACE; }
 100 <INITIAL>where|wher|whe                 { BEGIN(NOCMD); return tBACKTRACE; }
 101
 102 <INITIAL>cont|con|co|c                  { BEGIN(NOCMD); return tCONT; }
 103 <INITIAL>pass|pas|pa                    { BEGIN(NOCMD); return tPASS; }
 104 <INITIAL>condition|conditio|conditi|condit|condi|cond   { BEGIN(NOCMD); return tCOND; }
 105 <INITIAL>step|ste|st|s                  { BEGIN(NOCMD); return tSTEP; }
 106 <INITIAL>next|nex|ne|n                  { BEGIN(NOCMD); return tNEXT; }
 107 <INITIAL>stepi|si                       { BEGIN(NOCMD); return tSTEPI; }
 108 <INITIAL>nexti|ni                       { BEGIN(NOCMD); return tNEXTI; }
 109 <INITIAL>finish|finis|fini|fin|fi       { BEGIN(NOCMD); return tFINISH; }
 110
 111 <INITIAL>abort|abor|abo                 { BEGIN(NOCMD); return tABORT; }
 112 <INITIAL>print|prin|pri|pr|p            { BEGIN(FORMAT_EXPECTED); return tPRINT; }
 113
 114 <INITIAL>mode                           { BEGIN(MODE_CMD); return tMODE; }
 115 <INITIAL>show|sho|sh                    { BEGIN(SHOW_CMD); return tSHOW; }
 116 <INITIAL>symbolfile|symbols|symbol|sf   { BEGIN(PATH_EXPECTED); return tSYMBOLFILE; }
 117
 118 <INITIAL,INFO_CMD,DEL_CMD>break|brea|bre|br|b   { BEGIN(NOCMD); return tBREAK; }
 119 <INITIAL>watch|watc|wat                 { BEGIN(NOCMD); return tWATCH; }
 120 <INITIAL>whatis|whati|what              { BEGIN(NOCMD); return tWHATIS; }
 121 <INITIAL,NOPROCESS>run|ru|r             { BEGIN(ASTRING_EXPECTED); return tRUN;}
 122 <NOPROCESS>attach|attac|atta|att        { BEGIN(NOCMD); return tATTACH; }
 123 <INFO_CMD>share|shar|sha                { return tSHARE; }
 124 <INFO_CMD>locals|local|loca|loc         { return tLOCAL; }
 125 <INFO_CMD,WALK_CMD>class|clas|cla       { return tCLASS; }
 126 <INFO_CMD,WALK_CMD>module|modul|modu|mod { return tMODULE; }
 127 <INFO_CMD,WALK_CMD>queue|queu|que       { return tQUEUE; }
 128 <INFO_CMD,WALK_CMD>process|proces|proce|proc            { return tPROCESS; }
 129 <INFO_CMD,WALK_CMD>threads|thread|threa|thre|thr|th { return tTHREAD; }
 130 <INFO_CMD,WALK_CMD>modref|modre|modr    { return tMODREF; }
 131 <INFO_CMD>registers|regs|reg|re         { return tREGS; }
 132 <INFO_CMD>segments|segment|segm|seg|se  { return tSEGMENTS; }
 133 <INFO_CMD>stack|stac|sta|st             { return tSTACK; }
 134 <INFO_CMD>maps|map                      { return tMAPS; }
 135 <INFO_CMD,WALK_CMD>window|windo|wind|win|wnd    { return tWND; }
 136 <HELP_CMD>info|inf|in                   { return tINFO; }
 137 <MODE_CMD>vm86                          { return tVM86; }
 138
 139 <INITIAL,SHOW_CMD>directories|directorie|directori|director|directo|direct|direc|direc|dir {
 140                                           BEGIN(PATH_EXPECTED); return tDIR; }
 141
 142 char                                    { return tCHAR; }
 143 short                                   { return tSHORT; }
 144 int                                     { return tINT; }
 145 long                                    { return tLONG; }
 146 float                                   { return tFLOAT; }
 147 double                                  { return tDOUBLE; }
 148 unsigned                                { return tUNSIGNED; }
 149 signed                                  { return tSIGNED; }
 150 struct                                  { return tSTRUCT; }
 151 union                                   { return tUNION; }
 152 enum                                    { return tENUM; }
 153
 154 {IDENTIFIER}                            { yylval.string = DEBUG_MakeSymbol(yytext); return tIDENTIFIER; }
 155 "$"{IDENTIFIER}                         { yylval.string = DEBUG_MakeSymbol(yytext+1); return tINTVAR; }
 156
 157 <PATH_EXPECTED>{PATHNAME}               { yylval.string = DEBUG_MakeSymbol(yytext); return tPATH; }
 158
 159 <*>[ \t]+                               /* Eat up whitespace */
 160
 161 <NOPROCESS>.                            { BEGIN(ASTRING_EXPECTED); yyless(0); return tNOPROCESS;}
 162 <*>.                                    { if (syntax_error == 0) {
 163                                              syntax_error++;
 164                                              DEBUG_Printf(DBG_CHN_MESG, "Syntax Error (%s)\n", yytext); }
 165                                         }
 166 %%
 167
 168 #ifndef yywrap
 169 int yywrap(void) { return 1; }
 170 #endif
 171
 172 #ifndef DONT_USE_READLINE
 173
 174 #ifndef whitespace
 175 #define whitespace(c) (((c) == ' ') || ((c) == '\t'))
 176 #endif
 177
 178
 179 /* Strip whitespace from the start and end of STRING. */
 180 static void stripwhite (char *string)
 181 {
 182   register int i = 0;
 183
 184   while (whitespace (string[i]))
 185     i++;
 186
 187   if (i)
 188     strcpy (string, string + i);
 189
 190   i = strlen (string) - 1;
 191
 192   while (i > 0 && whitespace (string[i]))
 193     i--;
 194
 195   string[++i] = '\0';
 196 }
 197
 198 static int dbg_read(char * buf, int size)
 199 {
 200     static char last_line[256] = "";
 201     char * line;
 202     int len;
 203
 204     for (;;)
 205     {
 206         DEBUG_FlushSymbols();
 207         line = readline ("Wine-dbg>");
 208         if (!line)
 209         {
 210             DEBUG_Printf( DBG_CHN_MESG, "\n" );
 211             DEBUG_Exit(0);
 212         }
 213
 214         /* Remove leading and trailing whitespace from the line */
 215
 216         stripwhite (line);
 217
 218         /* If there is anything left, add it to the history list
 219            and execute it. Otherwise, re-execute last command. */
 220
 221         if (*line)
 222         {
 223             add_history( line );
 224             strncpy( last_line, line, 255 );
 225             last_line[255] = '\0';
 226         }
 227
 228         free( line );
 229         line = last_line;
 230
 231         if ((len = strlen(line)) > 0)
 232         {
 233             if (size < len + 1)
 234             {
 235                 DEBUG_Printf(DBG_CHN_MESG,"Fatal readline goof.\n");
 236                 DEBUG_Exit(0);
 237             }
 238             strcpy(buf, line);
 239             buf[len] = '\n';
 240             buf[len+1] = 0;
 241             return len + 1;
 242         }
 243     }
 244 }
 245
 246 static char *local_symbols[30];
 247 static int next_symbol;
 248
 249 char * DEBUG_MakeSymbol(const char * symbol)
 250 {
 251         assert(0 <= next_symbol && next_symbol < (sizeof(local_symbols) / sizeof(local_symbols[0])));
 252         return local_symbols[next_symbol++] = DBG_strdup(symbol);
 253 }
 254
 255 void DEBUG_FlushSymbols(void)
 256 {
 257         while(--next_symbol >= 0) DBG_free(local_symbols[next_symbol]);
 258         next_symbol = 0;
 259 }
 260
 261 #endif  /* DONT_USE_READLINE */