wine/dlls/msxml3/xslpattern.l

185 lines
5.4 KiB
Plaintext

/*
* XSLPattern lexer
*
* Copyright 2010 Adam Martinson 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 "config.h"
#include "wine/port.h"
#ifdef HAVE_LIBXML2
#include "xslpattern.h"
#include "xslpattern.tab.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msxml);
#define SCAN xslpattern_get_extra(yyscanner)
#define YY_INPUT(tok_buf, tok_len, max) \
do { \
if (SCAN->pos <= SCAN->len) \
{ \
tok_len = SCAN->len - SCAN->pos; \
if (tok_len > max) tok_len = max; \
memcpy(tok_buf, SCAN->in + SCAN->pos, tok_len); \
SCAN->pos += tok_len; \
} \
else \
{ \
tok_len = YY_NULL; \
} \
} while (0);
#define TOK(tok) TRACE("token: %s : %s\n", #tok, yytext); return tok
#define OP(tok) *yylval=NULL; TOK(tok)
#define SYM(tok) *yylval=NULL; TOK(tok)
#define STR(tok) *yylval=xmlStrdup(BAD_CAST yytext); TOK(tok)
%}
%option reentrant bison-bridge
%option noyywrap
%option prefix="xslpattern_"
%option noinput nounput
/* From the w3c XML standard
* <http://www.w3.org/TR/REC-xml/> */
/* [2.3] Common Syntactic Constructs */
WSpace ([[:space:]])
NCNameStartChar ([A-Za-z_]|[\xc0-\xd6\xd8-\xf6\xf8-\xff])
NameCharEx ([0-9]|[-._\xb7])
NCNameChar ({NCNameStartChar}|{NameCharEx})
/* From the w3c XML Namespace standard
* <http://www.w3.org/TR/REC-xml-names/> */
/* [3] Declaring Namespaces*/
NCName ({NCNameStartChar}{NCNameChar}*)
/* Mostly verbatim from the w3c XPath standard.
* <http://www.w3.org/TR/xpath/> */
/* [3.4] Booleans
* ||, &&, $foo$ are XSLPattern only */
OP_Or ("or"|"||"|"$or$")
OP_And ("and"|"&&"|"$and$")
OP_Eq ("="|"$eq$")
OP_IEq ("$ieq$")
OP_NEq ("!="|"$ne$")
OP_INEq ("$ine$")
OP_Lt ("<"|"$lt$")
OP_ILt ("$ilt$")
OP_Gt (">"|"$gt$")
OP_IGt ("$igt$")
OP_LEq ("<="|"$le$")
OP_ILEq ("$ile$")
OP_GEq (">="|"$ge$")
OP_IGEq ("$ige$")
OP_Not ("$not$")
OP_All ("$all$")
OP_Any ("$any$")
/* [3.7] Lexical Structure */
Literal (([\x22]([^\x22]*)[\x22])|([\x27]([^\x27]*)[\x27]))
Number ({Digits}("."{Digits}?)?|"."{Digits})
Digits ([0-9]+)
ANY (.)
%%
{WSpace}+ { /* ignored */ }
{Literal} { STR(TOK_Literal); }
"//" { SYM(TOK_DblFSlash); }
"/" { SYM(TOK_FSlash); }
".." { SYM(TOK_Parent); }
"." { SYM(TOK_Self); }
"::" { SYM(TOK_Axis); }
":" { SYM(TOK_Colon); }
"(" { SYM('('); }
")" { SYM(')'); }
"[" { SYM('['); }
"]" { SYM(']'); }
"@" { SYM('@'); }
"," { SYM(','); }
"*" { SYM('*'); }
{OP_And} { OP(TOK_OpAnd); }
{OP_Or} { OP(TOK_OpOr); }
{OP_Not} { OP(TOK_OpNot); }
{OP_Eq} { OP(TOK_OpEq); }
{OP_IEq} { OP(TOK_OpIEq); }
{OP_NEq} { OP(TOK_OpNEq); }
{OP_INEq} { OP(TOK_OpINEq); }
{OP_Lt} { OP(TOK_OpLt); }
{OP_ILt} { OP(TOK_OpILt); }
{OP_Gt} { OP(TOK_OpGt); }
{OP_IGt} { OP(TOK_OpIGt); }
{OP_LEq} { OP(TOK_OpLEq); }
{OP_ILEq} { OP(TOK_OpILEq); }
{OP_GEq} { OP(TOK_OpGEq); }
{OP_IGEq} { OP(TOK_OpIGEq); }
{OP_All} { OP(TOK_OpAll); }
{OP_Any} { OP(TOK_OpAny); }
"|" { SYM('|'); }
"!" { SYM('!'); }
{NCName} { STR(TOK_NCName); }
{Number} { STR(TOK_Number); }
{ANY} { FIXME("Unexpected character '%s'.\n",yytext); }
%%
xmlChar* XSLPattern_to_XPath(xmlXPathContextPtr ctxt, xmlChar const* xslpat_str)
{
parser_param p;
TRACE("(%s)\n", wine_dbgstr_a((char const*)xslpat_str));
memset(&p, 0, sizeof(parser_param));
p.ctx = ctxt;
p.in = xslpat_str;
p.len = xmlStrlen(xslpat_str);
xslpattern_lex_init(&p.yyscanner);
xslpattern_set_extra(&p, p.yyscanner);
xslpattern_parse(&p, p.yyscanner);
TRACE("=> %s\n", wine_dbgstr_a((char const*)p.out));
xslpattern_lex_destroy(p.yyscanner);
if (p.err)
{
xmlFree(p.out);
return xmlStrdup(xslpat_str);
}
else
{
return p.out;
}
}
#endif /* HAVE_LIBXML2 */