dlls/msxml3/xslpattern.l

   1 /*
   2  *    XSLPattern lexer
   3  *
   4  * Copyright 2010 Adam Martinson for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 %{
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #ifdef HAVE_LIBXML2
  26
  27 #include "xslpattern.h"
  28 #include "xslpattern.tab.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  32
  33 #define SCAN    xslpattern_get_extra(yyscanner)
  34
  35 #define YY_INPUT(tok_buf, tok_len, max) \
  36         do { \
  37             if (SCAN->pos <= SCAN->len) \
  38             { \
  39                 tok_len = SCAN->len - SCAN->pos; \
  40                 if (tok_len > max) tok_len = max; \
  41                 memcpy(tok_buf, SCAN->in + SCAN->pos, tok_len); \
  42                 SCAN->pos += tok_len; \
  43             } \
  44             else \
  45             { \
  46                 tok_len = YY_NULL; \
  47             } \
  48         } while (0);
  49
  50 #define TOK(tok)    TRACE("token: %s : %s\n", #tok, yytext); return tok
  51 #define OP(tok)     *yylval=NULL; TOK(tok)
  52 #define SYM(tok)    *yylval=NULL; TOK(tok)
  53 #define STR(tok)    *yylval=xmlStrdup(BAD_CAST yytext); TOK(tok)
  54
  55
  56 %}
  57
  58 %option reentrant bison-bridge
  59 %option noyywrap
  60 %option prefix="xslpattern_"
  61 %option noinput nounput
  62
  63 /* From the w3c XML standard
  64  * <http://www.w3.org/TR/REC-xml/> */
  65
  66     /* [2.3] Common Syntactic Constructs */
  67 WSpace          ([[:space:]])
  68
  69 NCNameStartChar ([A-Za-z_]|[\xc0-\xd6\xd8-\xf6\xf8-\xff])
  70
  71 NameCharEx      ([0-9]|[-._\xb7])
  72
  73 NCNameChar      ({NCNameStartChar}|{NameCharEx})
  74
  75 /* From the w3c XML Namespace standard
  76  * <http://www.w3.org/TR/REC-xml-names/> */
  77
  78     /* [3] Declaring Namespaces*/
  79 NCName          ({NCNameStartChar}{NCNameChar}*)
  80
  81 /* Mostly verbatim from the w3c XPath standard.
  82  * <http://www.w3.org/TR/xpath/> */
  83
  84
  85     /* [3.4] Booleans
  86      * ||, &&, $foo$ are XSLPattern only */
  87
  88 OP_Or           ("or"|"||"|"$or$")
  89 OP_And          ("and"|"&&"|"$and$")
  90 OP_Eq           ("="|"$eq$")
  91 OP_IEq          ("$ieq$")
  92 OP_NEq          ("!="|"$ne$")
  93 OP_INEq         ("$ine$")
  94 OP_Lt           ("<"|"$lt$")
  95 OP_ILt          ("$ilt$")
  96 OP_Gt           (">"|"$gt$")
  97 OP_IGt          ("$igt$")
  98 OP_LEq          ("<="|"$le$")
  99 OP_ILEq         ("$ile$")
 100 OP_GEq          (">="|"$ge$")
 101 OP_IGEq         ("$ige$")
 102 OP_Not          ("$not$")
 103 OP_All          ("$all$")
 104 OP_Any          ("$any$")
 105
 106     /* [3.7] Lexical Structure */
 107 Literal             (([\x22]([^\x22]*)[\x22])|([\x27]([^\x27]*)[\x27]))
 108 Number              ({Digits}("."{Digits}?)?|"."{Digits})
 109 Digits              ([0-9]+)
 110
 111 ANY                 (.)
 112
 113 %%
 114
 115 {WSpace}+                   { /* ignored */ }
 116 {Literal}                   { STR(TOK_Literal); }
 117 "//"                        { SYM(TOK_DblFSlash); }
 118 "/"                         { SYM(TOK_FSlash); }
 119 ".."                        { SYM(TOK_Parent); }
 120 "."                         { SYM(TOK_Self); }
 121 "::"                        { SYM(TOK_Axis); }
 122 ":"                         { SYM(TOK_Colon); }
 123 "("                         { SYM('('); }
 124 ")"                         { SYM(')'); }
 125 "["                         { SYM('['); }
 126 "]"                         { SYM(']'); }
 127 "@"                         { SYM('@'); }
 128 ","                         { SYM(','); }
 129 "*"                         { SYM('*'); }
 130 {OP_And}                    { OP(TOK_OpAnd); }
 131 {OP_Or}                     { OP(TOK_OpOr); }
 132 {OP_Not}                    { OP(TOK_OpNot); }
 133 {OP_Eq}                     { OP(TOK_OpEq); }
 134 {OP_IEq}                    { OP(TOK_OpIEq); }
 135 {OP_NEq}                    { OP(TOK_OpNEq); }
 136 {OP_INEq}                   { OP(TOK_OpINEq); }
 137 {OP_Lt}                     { OP(TOK_OpLt); }
 138 {OP_ILt}                    { OP(TOK_OpILt); }
 139 {OP_Gt}                     { OP(TOK_OpGt); }
 140 {OP_IGt}                    { OP(TOK_OpIGt); }
 141 {OP_LEq}                    { OP(TOK_OpLEq); }
 142 {OP_ILEq}                   { OP(TOK_OpILEq); }
 143 {OP_GEq}                    { OP(TOK_OpGEq); }
 144 {OP_IGEq}                   { OP(TOK_OpIGEq); }
 145 {OP_All}                    { OP(TOK_OpAll); }
 146 {OP_Any}                    { OP(TOK_OpAny); }
 147 "|"                         { SYM('|'); }
 148 "!"                         { SYM('!'); }
 149 {NCName}                    { STR(TOK_NCName); }
 150 {Number}                    { STR(TOK_Number); }
 151 {ANY}                       { FIXME("Unexpected character '%s'.\n",yytext); }
 152
 153 %%
 154
 155 xmlChar* XSLPattern_to_XPath(xmlXPathContextPtr ctxt, xmlChar const* xslpat_str)
 156 {
 157     parser_param p;
 158     TRACE("(%s)\n", wine_dbgstr_a((char const*)xslpat_str));
 159     memset(&p, 0, sizeof(parser_param));
 160     p.ctx = ctxt;
 161     p.in = xslpat_str;
 162     p.len = xmlStrlen(xslpat_str);
 163
 164     xslpattern_lex_init(&p.yyscanner);
 165     xslpattern_set_extra(&p, p.yyscanner);
 166
 167     xslpattern_parse(&p, p.yyscanner);
 168
 169     TRACE("=> %s\n", wine_dbgstr_a((char const*)p.out));
 170     xslpattern_lex_destroy(p.yyscanner);
 171
 172     if (p.err)
 173     {
 174         xmlFree(p.out);
 175         return xmlStrdup(xslpat_str);
 176     }
 177     else
 178     {
 179         return p.out;
 180     }
 181
 182 }
 183
 184 #endif /* HAVE_LIBXML2 */