mirror of
https://github.com/reactos/wine.git
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283 lines
8.4 KiB
C
283 lines
8.4 KiB
C
/* -*-C-*-
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* Lexical scanner for command line parsing
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*
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* Copyright 1993 Eric Youngdale
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*/
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%{
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "debugger.h"
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#include "xmalloc.h"
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#include "y.tab.h"
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#ifndef DONT_USE_READLINE
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#undef YY_INPUT
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#define YY_INPUT(buf,result,max_size) \
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if ( (result = dbg_read((char *) buf, max_size )) < 0 ) \
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YY_FATAL_ERROR( "read() in flex scanner failed" );
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extern char * readline(char *);
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extern void add_history(char *);
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static int dbg_read(char * buf, int size);
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static char * make_symbol(char *);
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void flush_symbols();
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#endif /* DONT_USE_READLINE */
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#define YY_NO_UNPUT
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static int syntax_error;
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%}
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DIGIT [0-9]
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HEXDIGIT [0-9a-fA-F]
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FORMAT [ubcdiswx]
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IDENTIFIER [_a-zA-Z\.~][_a-zA-Z0-9\.~@]*
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PATHNAME [/_a-zA-Z\.~][/_a-zA-Z0-9\.~@]*
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STRING \"[^\n"]+\"
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%s FORMAT_EXPECTED
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%s PATH_EXPECTED
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%s INFO_CMD
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%s HELP_CMD
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%s DEL_CMD
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%s WALK_CMD
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%s SHOW_CMD
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%s NOCMD
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%s DEBUGSTR
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%%
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\n { BEGIN(0); syntax_error = 0;
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return tEOL; } /*Indicates end of command. Reset state. */
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"||" { return OP_LOR; }
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"&&" { return OP_LAND; }
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"==" { return OP_EQ; }
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"!=" { return OP_NE; }
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"<=" { return OP_LE; }
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">=" { return OP_GE; }
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"<<" { return OP_SHL; }
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">>" { return OP_SHR; }
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"->" { return OP_DRF; }
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[-+<=>|&^()*/%:!~,\.] { return *yytext; }
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"[" { return *yytext; }
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"]" { return *yytext; }
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"0x"{HEXDIGIT}+ { sscanf(yytext, "%x", &yylval.integer); return tNUM; }
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{DIGIT}+ { sscanf(yytext, "%d", &yylval.integer); return tNUM; }
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<FORMAT_EXPECTED>"/"{DIGIT}+{FORMAT} { char * last;
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yylval.integer = strtol( yytext+1, &last, NULL );
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yylval.integer = (yylval.integer << 8) | *last;
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return tFORMAT; }
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<FORMAT_EXPECTED>"/"{FORMAT} { yylval.integer = (1 << 8) | yytext[1]; return tFORMAT; }
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{STRING} { yylval.string = make_symbol(yytext); return tSTRING; }
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<DEBUGSTR>[a-z+\-,]* { yylval.string = yytext; return tDEBUGSTR; }
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$pc { yylval.reg = REG_EIP; return tREG; }
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$flags { yylval.reg = REG_EFL; return tREG; }
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$eip { yylval.reg = REG_EIP; return tREG; }
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$ip { yylval.reg = REG_IP; return tREG; }
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$esp { yylval.reg = REG_ESP; return tREG; }
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$sp { yylval.reg = REG_SP; return tREG; }
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$eax { yylval.reg = REG_EAX; return tREG; }
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$ebx { yylval.reg = REG_EBX; return tREG; }
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$ecx { yylval.reg = REG_ECX; return tREG; }
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$edx { yylval.reg = REG_EDX; return tREG; }
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$esi { yylval.reg = REG_ESI; return tREG; }
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$edi { yylval.reg = REG_EDI; return tREG; }
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$ebp { yylval.reg = REG_EBP; return tREG; }
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$ax { yylval.reg = REG_AX; return tREG; }
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$bx { yylval.reg = REG_BX; return tREG; }
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$cx { yylval.reg = REG_CX; return tREG; }
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$dx { yylval.reg = REG_DX; return tREG; }
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$si { yylval.reg = REG_SI; return tREG; }
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$di { yylval.reg = REG_DI; return tREG; }
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$bp { yylval.reg = REG_BP; return tREG; }
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$es { yylval.reg = REG_ES; return tREG; }
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$ds { yylval.reg = REG_DS; return tREG; }
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$cs { yylval.reg = REG_CS; return tREG; }
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$ss { yylval.reg = REG_SS; return tREG; }
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$fs { yylval.reg = REG_FS; return tREG; }
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$gs { yylval.reg = REG_GS; return tREG; }
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<INITIAL>info|inf|in { BEGIN(INFO_CMD); return tINFO; }
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<INITIAL>up { BEGIN(NOCMD); return tUP; }
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<INITIAL>down|dow|do { BEGIN(NOCMD); return tDOWN; }
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<INITIAL>frame|fram|fra|fr { BEGIN(NOCMD); return tFRAME; }
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<INITIAL>list|lis|li|l { BEGIN(PATH_EXPECTED); return tLIST; }
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<INITIAL>enable|enabl|enab|ena { BEGIN(NOCMD); return tENABLE;}
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<INITIAL>debugmsg|debugms|debugm|debug|debu|deb { BEGIN(DEBUGSTR); return tDEBUGMSG;}
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<INITIAL>disable|disabl|disab|disa|dis { BEGIN(NOCMD); return tDISABLE; }
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<INITIAL>disassemble|disassembl|disassemb|disassem|disasse|disass|disas { BEGIN(NOCMD); return tDISASSEMBLE; }
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<INITIAL,INFO_CMD,DEL_CMD>display|displa|displ|disp { BEGIN(FORMAT_EXPECTED); return tDISPLAY; }
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<INITIAL>undisplay|undispla|undispl|undisp|undis|undi|und { BEGIN(NOCMD); return tUNDISPLAY; }
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<INITIAL>delete|delet|dele|del { BEGIN(DEL_CMD); return tDELETE; }
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<INITIAL>quit|qui|qu|q { BEGIN(NOCMD); return tQUIT; }
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<INITIAL>set|se { BEGIN(NOCMD); return tSET; }
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<INITIAL>walk|w { BEGIN(WALK_CMD); return tWALK; }
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<INITIAL>x { BEGIN(FORMAT_EXPECTED); return tEXAM; }
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<INITIAL>help|hel|he|"?" { BEGIN(HELP_CMD); return tHELP; }
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<INITIAL>backtrace|backtrac|backtra|backt|back|bac|ba|bt { BEGIN(NOCMD); return tBACKTRACE; }
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<INITIAL>where|wher|whe { BEGIN(NOCMD); return tBACKTRACE; }
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<INITIAL>cont|con|co|c { BEGIN(NOCMD); return tCONT; }
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<INITIAL>condition|conditio|conditi|condit|condi|cond { BEGIN(NOCMD); return tCOND; }
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<INITIAL>step|ste|st|s { BEGIN(NOCMD); return tSTEP; }
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<INITIAL>next|nex|ne|n { BEGIN(NOCMD); return tNEXT; }
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<INITIAL>stepi|si { BEGIN(NOCMD); return tSTEPI; }
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<INITIAL>nexti|ni { BEGIN(NOCMD); return tNEXTI; }
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<INITIAL>finish|finis|fini|fin|fi { BEGIN(NOCMD); return tFINISH; }
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<INITIAL>abort|abor|abo { BEGIN(NOCMD); return tABORT; }
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<INITIAL>print|prin|pri|pr|p { BEGIN(FORMAT_EXPECTED); return tPRINT; }
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<INITIAL>mode { BEGIN(NOCMD); return tMODE; }
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<INITIAL>show|sho|sh { BEGIN(SHOW_CMD); return tSHOW; }
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<INITIAL>symbolfile|symbols|symbol|sf { BEGIN(PATH_EXPECTED); return tSYMBOLFILE; }
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<INITIAL,INFO_CMD,DEL_CMD>break|brea|bre|br|b { BEGIN(PATH_EXPECTED); return tBREAK; }
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<INFO_CMD>share|shar|sha { return tSHARE; }
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<INFO_CMD>locals|local|loca|loc { return tLOCAL; }
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<INFO_CMD,WALK_CMD>class|clas|cla { return tCLASS; }
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<INFO_CMD,WALK_CMD>module|modul|modu|mod { return tMODULE; }
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<INFO_CMD,WALK_CMD>queue|queu|que { return tQUEUE; }
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<INFO_CMD>registers|regs|reg|re { return tREGS; }
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<INFO_CMD>segments|segment|segm|seg|se { return tSEGMENTS; }
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<INFO_CMD>stack|stac|sta|st { return tSTACK; }
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<INFO_CMD>maps|map { return tMAPS; }
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<INFO_CMD,WALK_CMD>window|windo|wind|win|wnd { return tWND; }
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<HELP_CMD>info|inf|in { return tINFO; }
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<INITIAL,SHOW_CMD>directories|directorie|directori|director|directo|direct|direc|direc|dir {
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BEGIN(PATH_EXPECTED); return tDIR; }
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char { return tCHAR; }
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short { return tSHORT; }
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int { return tINT; }
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long { return tLONG; }
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float { return tFLOAT; }
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double { return tDOUBLE; }
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unsigned { return tUNSIGNED; }
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signed { return tSIGNED; }
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struct { return tSTRUCT; }
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union { return tUNION; }
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enum { return tENUM; }
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{IDENTIFIER} { yylval.string = make_symbol(yytext); return tIDENTIFIER; }
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<PATH_EXPECTED>{PATHNAME} { yylval.string = make_symbol(yytext); return tPATH; }
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[ \t]+ /* Eat up whitespace */
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. { if (syntax_error == 0)
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{
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syntax_error ++; fprintf(stderr, "Syntax Error\n");
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}
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}
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%%
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#ifndef yywrap
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int yywrap(void) { return 1; }
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#endif
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#ifndef DONT_USE_READLINE
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#ifndef whitespace
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#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
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#endif
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/* Strip whitespace from the start and end of STRING. */
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static void stripwhite (char *string)
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{
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register int i = 0;
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while (whitespace (string[i]))
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i++;
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if (i)
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strcpy (string, string + i);
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i = strlen (string) - 1;
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while (i > 0 && whitespace (string[i]))
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i--;
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string[++i] = '\0';
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}
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static int dbg_read(char * buf, int size)
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{
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static char last_line[256] = "";
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char * line;
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int len;
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for (;;)
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{
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flush_symbols();
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line = readline ("Wine-dbg>");
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if (!line)
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{
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fprintf( stderr, "\n" );
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exit(0);
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}
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/* Remove leading and trailing whitespace from the line */
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stripwhite (line);
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/* If there is anything left, add it to the history list
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and execute it. Otherwise, re-execute last command. */
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if (*line)
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{
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add_history( line );
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strncpy( last_line, line, 255 );
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last_line[255] = '\0';
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}
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free( line );
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line = last_line;
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if ((len = strlen(line)) > 0)
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{
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if (size < len + 1)
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{
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fprintf(stderr,"Fatal readline goof.\n");
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exit(0);
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}
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strcpy(buf, line);
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buf[len] = '\n';
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buf[len+1] = 0;
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return len + 1;
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}
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}
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}
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static char *local_symbols[30];
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static int next_symbol;
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char * make_symbol(char * symbol){
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return local_symbols[next_symbol++] = xstrdup(symbol);
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}
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void flush_symbols()
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{
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while(--next_symbol>= 0) free(local_symbols[next_symbol]);
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next_symbol = 0;
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}
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#endif /* DONT_USE_READLINE */
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