/* -*-C-*- * Lexical scanner for command line parsing * * Copyright 1993 Eric Youngdale * 2000 Eric Pouech * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ %option nounput %{ #include <stdlib.h> #include <string.h> #include <stdarg.h> #include "debugger.h" #include "dbg.tab.h" #undef YY_INPUT static int read_input(const char* pfx, char* buf, int size) { size_t len; static char* last_line = NULL; static size_t last_line_idx = 0; /* try first to fetch the remaining of an existing line */ if (last_line_idx == 0) { char* tmp = NULL; /* no remaining chars to be read from last line, grab a brand new line up to '\n' */ lexeme_flush(); len = input_fetch_entire_line(pfx, &tmp); /* FIXME: should have a pair of buffers, and switch between the two, instead of * reallocating a new one for each line */ if (len == 0 || (len == 1 && tmp[0] == '\n') || (len == 2 && tmp[0] == '\r' && tmp[1] == '\n')) { HeapFree(GetProcessHeap(), 0, tmp); } else { HeapFree(GetProcessHeap(), 0, last_line); last_line = tmp; } } len = min(strlen(last_line + last_line_idx), size - 1); memcpy(buf, last_line + last_line_idx, len); buf[len] = '\0'; if ((last_line_idx += len) >= strlen(last_line)) last_line_idx = 0; return len; } #define YY_INPUT(buf,result,max_size) \ if ((result = read_input("Wine-dbg>", buf, max_size)) < 0) \ YY_FATAL_ERROR("read_input in flex scanner failed"); static int syntax_error; %} DIGIT [0-9] HEXDIGIT [0-9a-fA-F] FORMAT [ubcdgiswx] IDENTIFIER [_a-zA-Z~?][_a-zA-Z0-9~?@]* PATHNAME [\\/-_a-zA-Z0-9\.~@]+ STRING \"[^\n"]+\" %s FORMAT_EXPECTED %s PATH_EXPECTED %s INFO_CMD %s HELP_CMD %s BD_CMD %s LOCAL_CMD %s SHOW_CMD %s MODE_CMD %s MAINT_CMD %s NOCMD %x ASTRING_EXPECTED %x NOPROCESS %% /* set to special state when no process is loaded. */ if (!dbg_curr_process && YYSTATE == INITIAL) {BEGIN(NOPROCESS);} <<EOF>> { return tEOF; } <*>\n { BEGIN(INITIAL); syntax_error = 0; return tEOL; } /* Indicates end of command. Reset state. */ /* This rule must precede the ones below, */ /* otherwise paths like '/' or '0x9' would */ /* get parsed as an operator or tNUM */ <PATH_EXPECTED>{PATHNAME} { yylval.string = lexeme_alloc(yytext); return tPATH; } "||" { return OP_LOR; } "&&" { return OP_LAND; } "==" { return OP_EQ; } "!=" { return OP_NE; } "<=" { return OP_LE; } ">=" { return OP_GE; } "<<" { return OP_SHL; } ">>" { return OP_SHR; } "->" { return OP_DRF; } "::" { return OP_SCOPE; } [-+<=>|&^()*/%:!~,\.] { return *yytext; } "[" { return *yytext; } "]" { return *yytext; } "0x"{HEXDIGIT}+ { sscanf(yytext, "%x", &yylval.integer); return tNUM; } {DIGIT}+ { sscanf(yytext, "%d", &yylval.integer); return tNUM; } <FORMAT_EXPECTED>"/"{DIGIT}+{FORMAT} { char* last; yylval.integer = strtol(yytext+1, &last, 0) << 8; yylval.integer |= *last; return tFORMAT; } <FORMAT_EXPECTED>"/"{FORMAT} { yylval.integer = (1 << 8) | yytext[1]; return tFORMAT; } {STRING} { yylval.string = lexeme_alloc(yytext + 1); yylval.string[strlen(yylval.string) - 1] = '\0'; return tSTRING; } <ASTRING_EXPECTED>[^\n]+ { char* p = yytext; while (*p == ' ' || *p == '\t') p++; yylval.string = lexeme_alloc(p); return tSTRING; } <INITIAL,NOPROCESS>info|inf|in { BEGIN(INFO_CMD); return tINFO; } <INITIAL>up { BEGIN(NOCMD); return tUP; } <INITIAL>down|dow|do { BEGIN(NOCMD); return tDOWN; } <INITIAL>frame|fram|fra|fr { BEGIN(NOCMD); return tFRAME; } <INITIAL>list|lis|li|l { BEGIN(PATH_EXPECTED); return tLIST; } <INITIAL>enable|enabl|enab|ena { BEGIN(BD_CMD); return tENABLE;} <INITIAL>disable|disabl|disab|disa|dis { BEGIN(BD_CMD); return tDISABLE; } <INITIAL>disassemble|disassembl|disassemb|disassem|disasse|disass|disas { BEGIN(NOCMD); return tDISASSEMBLE; } <INITIAL>locally|local { BEGIN(LOCAL_CMD); return tLOCAL; } <INITIAL,LOCAL_CMD>display|displa|displ|disp { BEGIN(FORMAT_EXPECTED); return tDISPLAY; } <INFO_CMD,BD_CMD>display|displa|displ|disp|dis|di|d { BEGIN(NOCMD); return tDISPLAY; } <INITIAL>undisplay|undispla|undispl|undisp|undis|undi|und { BEGIN(NOCMD); return tUNDISPLAY; } <INITIAL>delete|delet|dele|del { BEGIN(BD_CMD); return tDELETE; } <INITIAL,NOPROCESS>quit|qui|qu|q { BEGIN(NOCMD); return tQUIT; } <INITIAL>set|se { BEGIN(NOCMD); return tSET; } <INITIAL>x { BEGIN(FORMAT_EXPECTED); return tEXAM; } <INITIAL,NOPROCESS>help|hel|he|"?" { BEGIN(HELP_CMD); return tHELP; } <INITIAL,NOPROCESS>backtrace|backtrac|backtra|backt|back|bac|ba|bt { BEGIN(NOCMD); return tBACKTRACE; } <INITIAL,NOPROCESS>where|wher|whe { BEGIN(NOCMD); return tBACKTRACE; } <INITIAL>cont|con|co|c { BEGIN(NOCMD); return tCONT; } <INITIAL>pass|pas|pa { BEGIN(NOCMD); return tPASS; } <INITIAL>condition|conditio|conditi|condit|condi|cond { BEGIN(NOCMD); return tCOND; } <INITIAL>step|ste|st|s { BEGIN(NOCMD); return tSTEP; } <INITIAL>next|nex|ne|n { BEGIN(NOCMD); return tNEXT; } <INITIAL>stepi|si { BEGIN(NOCMD); return tSTEPI; } <INITIAL>nexti|ni { BEGIN(NOCMD); return tNEXTI; } <INITIAL>finish|finis|fini|fin|fi { BEGIN(NOCMD); return tFINISH; } <INITIAL>abort|abor|abo { BEGIN(NOCMD); return tABORT; } <INITIAL>print|prin|pri|pr|p { BEGIN(FORMAT_EXPECTED); return tPRINT; } <INITIAL>mode { BEGIN(MODE_CMD); return tMODE; } <INITIAL>show|sho|sh { BEGIN(SHOW_CMD); return tSHOW; } <INITIAL,NOPROCESS>source|sourc|sour|src { BEGIN(PATH_EXPECTED); return tSOURCE; } <INITIAL>symbolfile|symbols|symbol|sf { BEGIN(PATH_EXPECTED); return tSYMBOLFILE; } <INITIAL,INFO_CMD,BD_CMD>break|brea|bre|br|b { BEGIN(NOCMD); return tBREAK; } <INITIAL,INFO_CMD,BD_CMD>hbreak|hbrea|hbre|hbr|hb { BEGIN(NOCMD); return tHBREAK; } <INITIAL>watch|watc|wat { BEGIN(NOCMD); return tWATCH; } <INITIAL>whatis|whati|what { BEGIN(NOCMD); return tWHATIS; } <INITIAL,NOPROCESS>run|ru|r { BEGIN(ASTRING_EXPECTED); return tRUN;} <INITIAL>detach|detac|deta|det { BEGIN(NOCMD); return tDETACH; } <INITIAL>maintenance|maint { BEGIN(MAINT_CMD); return tMAINTENANCE; } <INITIAL>minidump|mdmp { BEGIN(PATH_EXPECTED); return tMINIDUMP; } <INITIAL>echo { BEGIN(ASTRING_EXPECTED); return tECHO; } <NOPROCESS>attach|attac|atta|att { BEGIN(NOCMD); return tATTACH; } <INFO_CMD>share|shar|sha { return tSHARE; } <INFO_CMD>locals|local|loca|loc { return tLOCAL; } <INFO_CMD>class|clas|cla { return tCLASS; } <INFO_CMD>process|proces|proce|proc { return tPROCESS; } <INFO_CMD>threads|thread|threa|thre|thr|th { return tTHREAD; } <INFO_CMD>exception|except|exc|ex { return tEXCEPTION; } <INFO_CMD>registers|regs|reg|re { return tREGS; } <INFO_CMD>allregs|allreg|allre { return tALLREGS; } <INFO_CMD>"all-registers"|"all-regs"|"all-reg"|"all-re" { return tALLREGS; } <INFO_CMD>segments|segment|segm|seg|se { return tSEGMENTS; } <INFO_CMD>stack|stac|sta|st { return tSTACK; } <INFO_CMD>symbol|symbo|symb|sym { BEGIN(ASTRING_EXPECTED); return tSYMBOL; } <INFO_CMD>maps|map { return tMAPS; } <INFO_CMD>window|windo|wind|win|wnd { return tWND; } <HELP_CMD>info|inf|in { return tINFO; } <MODE_CMD>vm86 { return tVM86; } <MAINT_CMD>type { return tTYPE; } <INITIAL,SHOW_CMD>directories|directorie|directori|director|directo|direct|direc|direc|dir { BEGIN(PATH_EXPECTED); return tDIR; } char { return tCHAR; } short { return tSHORT; } int { return tINT; } long { return tLONG; } float { return tFLOAT; } double { return tDOUBLE; } unsigned { return tUNSIGNED; } signed { return tSIGNED; } struct { return tSTRUCT; } union { return tUNION; } enum { return tENUM; } all { return tALL; } {IDENTIFIER} { yylval.string = lexeme_alloc(yytext); return tIDENTIFIER; } "$"{IDENTIFIER} { yylval.string = lexeme_alloc(yytext+1); return tINTVAR; } <*>[ \t\r]+ /* Eat up whitespace and DOS LF */ <NOPROCESS>. { BEGIN(ASTRING_EXPECTED); yyless(0); return tNOPROCESS;} <*>. { if (syntax_error == 0) { syntax_error++; dbg_printf("Syntax Error (%s)\n", yytext); } } %% #ifndef yywrap int yywrap(void) { return 1; } #endif static char** local_lexemes /* = NULL */; static int next_lexeme /* = 0 */; static int alloc_lexeme /* = 0 */; char* lexeme_alloc_size(int size) { assert(0 <= next_lexeme && next_lexeme < alloc_lexeme + 1); if (next_lexeme >= alloc_lexeme) { alloc_lexeme += 32; local_lexemes = dbg_heap_realloc(local_lexemes, alloc_lexeme * sizeof(local_lexemes[0])); assert(local_lexemes); } return local_lexemes[next_lexeme++] = HeapAlloc(GetProcessHeap(), 0, size + 1); } char* lexeme_alloc(const char* lexeme) { char* ptr = lexeme_alloc_size(strlen(lexeme) + 1); return strcpy(ptr, lexeme); } void lexeme_flush(void) { while (--next_lexeme >= 0) HeapFree(GetProcessHeap(), 0, local_lexemes[next_lexeme]); next_lexeme = 0; }