100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/*
|
|
* Copyright 2011 Jacek Caban for CodeWeavers
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include <assert.h>
|
|
|
|
#include "vbscript.h"
|
|
#include "parse.h"
|
|
#include "parser.tab.h"
|
|
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(vbscript);
|
|
|
|
static inline BOOL is_identifier_char(WCHAR c)
|
|
{
|
|
return isalnumW(c) || c == '_';
|
|
}
|
|
|
|
static int parse_identifier(parser_ctx_t *ctx, const WCHAR **ret)
|
|
{
|
|
const WCHAR *ptr = ctx->ptr++;
|
|
WCHAR *str;
|
|
int len;
|
|
|
|
while(ctx->ptr < ctx->end && is_identifier_char(*ctx->ptr))
|
|
ctx->ptr++;
|
|
len = ctx->ptr-ptr;
|
|
|
|
str = parser_alloc(ctx, (len+1)*sizeof(WCHAR));
|
|
if(!str)
|
|
return 0;
|
|
|
|
memcpy(str, ptr, (len+1)*sizeof(WCHAR));
|
|
str[len] = 0;
|
|
*ret = str;
|
|
return tIdentifier;
|
|
}
|
|
|
|
static int parse_next_token(void *lval, parser_ctx_t *ctx)
|
|
{
|
|
WCHAR c;
|
|
|
|
while(*ctx->ptr == ' ' || *ctx->ptr == '\t' || *ctx->ptr == '\r')
|
|
ctx->ptr++;
|
|
if(ctx->ptr == ctx->end)
|
|
return ctx->last_token == tNL ? tEOF : tNL;
|
|
|
|
c = *ctx->ptr;
|
|
|
|
if(isalphaW(c))
|
|
return parse_identifier(ctx, lval);
|
|
|
|
switch(c) {
|
|
case '\n':
|
|
ctx->ptr++;
|
|
return tNL;
|
|
case '\'':
|
|
ctx->ptr = strchrW(ctx->ptr, '\n');
|
|
if(ctx->ptr)
|
|
ctx->ptr++;
|
|
else
|
|
ctx->ptr = ctx->end;
|
|
return tNL;
|
|
default:
|
|
FIXME("Unhandled char %c in %s\n", *ctx->ptr, debugstr_w(ctx->ptr));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int parser_lex(void *lval, parser_ctx_t *ctx)
|
|
{
|
|
int ret;
|
|
|
|
while(1) {
|
|
ret = parse_next_token(lval, ctx);
|
|
if(ret != tNL || ctx->last_token != tNL)
|
|
break;
|
|
|
|
ctx->last_nl = ctx->ptr-ctx->code;
|
|
}
|
|
|
|
return (ctx->last_token = ret);
|
|
}
|