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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
%option noyywrap
%{
#define FORBIDDEN_SYMBOL_ALLOW_ALL
#include "common/str.h"
#include "director/lingo/lingo.h"
#include "director/lingo/lingo-gr.h"
using namespace Director;
int yyparse();
static void count() {
g_lingo->_colnumber += strlen(yytext);
}
#if defined(__PLAYSTATION2__) || defined(_MSC_VER)
// Stub for missing function
int isatty(int fileno) { return 0; }
#endif
#ifdef _MSC_VER
#define YY_NO_UNISTD_H
#endif
static void countnl() {
char *p = yytext;
while(*p == '\n' || *p == '\r')
p++;
g_lingo->_linenumber++;
g_lingo->_colnumber = strlen(p);
}
%}
identifier [_[:alpha:]][_[:alnum:]]*
constfloat [[:digit:]]+\.[[:digit:]]*
constinteger [[:digit:]]+
conststring \"[^\"\n]*\"
operator [-+*/%=^:,()><&]
newline [ \t]*[\n\r]+
whitespace [\t ]
%%
--[^\r\n]*
^{whitespace}+ { count(); }
[\t]+ { count(); return ' '; }
(?i:and) { count(); return tAND; }
(?i:contains) { count(); return tCONTAINS; }
(?i:down) { count(); return tDOWN; }
(?i:if) { count(); return tIF; }
(?i:[\n\r]+[\t ]*else[\t ]+if) { countnl(); return tNLELSIF; }
(?i:[\n\r]+[\t ]*else) { countnl(); return tNLELSE; }
(?i:else) { count(); return tELSE; }
(?i:end) { count(); return tEND; }
(?i:factory) { count(); return tFACTORY; }
(?i:exit) { count(); return tEXIT; }
(?i:frame) { count(); return tFRAME; }
(?i:global) { count(); return tGLOBAL; }
(?i:go) { count(); return tGO; }
(?i:intersects) { count(); return tINTERSECTS; }
(?i:into) { count(); return tINTO; }
(?i:loop) { count(); return tLOOP; }
(?i:macro) { count(); return tMACRO; }
(?i:mci) { count(); return tMCI; }
(?i:mciwait) { count(); return tMCIWAIT; }
(?i:method) { count(); return tMETHOD; }
(?i:movie) { count(); return tMOVIE; }
(?i:next) { count(); return tNEXT; }
(?i:not) { count(); return tNOT; }
(?i:of) { count(); return tOF; }
(?i:or) { count(); return tOR; }
(?i:previous) { count(); return tPREVIOUS; }
(?i:put) { count(); return tPUT; }
(?i:repeat) { count(); return tREPEAT; }
(?i:set) { count(); return tSET; }
(?i:starts) { count(); return tSTARTS; }
(?i:the[ \t]+[[:alpha:]]+[\t ]+of[\t ]+[[:alpha:]]+) {
count();
const char *ptr = &yytext[4]; // Skip 'the '
while (*ptr == ' ' || *ptr == '\t')
ptr++;
Common::String field;
while (*ptr != ' ' && *ptr != '\t')
field += *ptr++;
while (*ptr == ' ' || *ptr == '\t')
ptr++;
ptr += 3; // Skip 'of '
while (*ptr == ' ' || *ptr == '\t')
ptr++;
if (g_lingo->_theEntities.contains(ptr)) {
field = Common::String::format("%d%s", g_lingo->_theEntities[ptr]->entity, field.c_str());
if (!g_lingo->_theEntityFields.contains(field)) {
error("Unhandled the field %s", ptr);
}
if (g_lingo->_theEntityFields[field]->entity != g_lingo->_theEntities[ptr]->entity)
error("Unsupported field '%s' for entity '%s'", field.c_str(), ptr);
yylval.e[0] = g_lingo->_theEntities[ptr]->entity;
yylval.e[1] = g_lingo->_theEntityFields[field]->field;
if (g_lingo->_theEntities[ptr]->hasId)
return THEENTITYWITHID;
else
return THEENTITY;
}
warning("Unhandled the entity %s", ptr);
}
(?i:the[ \t]+[[:alpha:]]+) {
count();
const char *ptr = &yytext[4]; // Skip 'the '
while (*ptr == ' ' || *ptr == '\t')
ptr++;
if (g_lingo->_theEntities.contains(ptr)) {
yylval.e[0] = g_lingo->_theEntities[ptr]->entity;
yylval.e[1] = 0; // No field
if (g_lingo->_theEntities[ptr]->hasId)
return THEENTITYWITHID;
else
return THEENTITY;
}
warning("Unhandled the entity %s", ptr);
}
(?i:then) { count(); return tTHEN; }
(?i:to) { count(); return tTO; }
(?i:sprite) { count(); return tSPRITE; }
(?i:with) { count(); return tWITH; }
(?i:within) { count(); return tWITHIN; }
(?i:when) { count(); return tWHEN; }
(?i:while) { count(); return tWHILE; }
[<][>] { count(); return tNEQ; }
[>][=] { count(); return tGE; }
[<][=] { count(); return tLE; }
[&][&] { count(); return tCONCAT; }
{identifier} {
count();
yylval.s = new Common::String(yytext);
if (g_lingo->_handlers.contains(yytext)) {
if (g_lingo->_handlers[yytext]->type == BLTIN && g_lingo->_handlers[yytext]->parens == false) {
if (g_lingo->_handlers[yytext]->nargs == 0) {
if (g_lingo->_handlers[yytext]->maxArgs == 0)
return BLTINNOARGS;
else if (g_lingo->_handlers[yytext]->maxArgs == 1)
return BLTINNOARGSORONE;
else
error("Incorrect setup for builtin: %s", yytext);
} else if (g_lingo->_handlers[yytext]->nargs == 1 &&
g_lingo->_handlers[yytext]->maxArgs == 1) {
return BLTINONEARG;
} else {
error("Incorrect setup for builtin: %s", yytext);
}
}
}
return ID;
}
{constfloat} { count(); yylval.f = atof(yytext); return FLOAT; }
{constinteger} { count(); yylval.i = strtol(yytext, NULL, 10); return INT; }
{operator} { count(); return *yytext; }
{newline} { return '\n'; }
{conststring} { count(); yylval.s = new Common::String(&yytext[1]); yylval.s->deleteLastChar(); return STRING; }
.
%%
extern int yydebug;
namespace Director {
int Lingo::parse(const char *code) {
YY_BUFFER_STATE bp;
yydebug = 0;
yy_delete_buffer(YY_CURRENT_BUFFER);
bp = yy_scan_string(code);
yy_switch_to_buffer(bp);
yyparse();
yy_delete_buffer(bp);
return 0;
}
}
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