--- /dev/null
+/* ------------------------------------------------
+Copyright 2014 AT&T Intellectual Property
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ------------------------------------------- */
+
+/*
+ MUST COMPILE WITH
+ flex -PxmlParser -oxmllexer.cc xml.l
+ (or equivalent).
+*/
+
+%{
+/*
+ * AT&T lex can't handle this lexer due to lex bugs. It works with flex
+ * 2.3.7, pclex 2.0.5, and MKS lex 3.1a.
+ */
+
+ // #include "parse_fta.h"
+ #include <string.h>
+
+
+
+#include "xml.tab.hh"
+
+/*
+ Some includes that flex doesn't include as standard,
+ but which are needed.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+
+// Prevent flex from defining yywrap as extern "C"
+
+#define YY_SKIP_YYWRAP
+
+/* No lex lib, supply the yywrap fcn. that normally resides there
+*/
+
+int xmlParserwrap(){return(1);}
+
+extern int xmlParserdebug;
+
+
+/*
+ These variables are used for error reporting:
+ flex_xml_lineno : the line currently being parsed when the error occurs.
+ flex_xml_ch : the character on the line where the error occurs
+ flex_xml_linebuf : store the line for reporting.
+
+ NOTE : 1) the fixed size flex_xml_linebuf buffer is dangerous.
+ 2) You might get pointed to a place shortly after
+ where the syntax error occurs. It is close enough
+ for now.
+*/
+
+int flex_xml_lineno = 1;
+int flex_xml_ch = 0;
+char flex_xml_linebuf[20000];
+
+char *flex_xml_stringinput = NULL;
+int flex_xml_stringinput_ptr = 0;
+FILE *flex_xml_fileinput = NULL;
+int my_xmlParser_yyinput(char *buf, int max_size);
+
+
+
+void xmlParsererror(char *s){
+ int i;
+ fprintf(stderr,"On line %d, char %d: %s (token %s):\n%s\n",
+ flex_xml_lineno, flex_xml_ch, s, xmlParsertext, flex_xml_linebuf );
+ for(i=0;i<flex_xml_ch;i++){
+ if(flex_xml_linebuf[i] == '\t'){
+ fprintf(stderr,"\t");
+ }else{
+ fprintf(stderr," ");
+ }
+ }
+ fprintf(stderr,"^\n");
+ // fprintf(stderr,"%*s\n",1+flex_xml_ch,"^");
+}
+
+#undef YY_INPUT
+#define YY_INPUT(b, r, ms) (r = my_xmlParser_yyinput(b,ms))
+
+%}
+ /* MKS needs the next line to increase the NFA table */
+%e 1200
+%option noyywrap
+
+%%
+
+ /* literal keyword tokens */
+
+ /*
+ The actions associated with each text token are to
+ keep track of the current location (for syntax error reporting)
+ and to report any necessary info to the emf.y parse tree builder
+
+ Its likely that there are a number of omissions, inconsistencies
+ (some keywords do not need to be in caps), and relics
+ (keywords such as BETWEEN, INDICATOR, etc., are not used
+ in emf.y)
+ This parser is somewhat of a work in progress.
+ */
+
+ /* Query keywords */
+
+
+
+
+[<>=/] { flex_xml_ch+=xmlParserleng; return yytext[0]; }
+
+ /* names */
+
+[A-Za-z_][A-Za-z0-9_:\-]* { flex_xml_ch+=xmlParserleng; xmlParserlval.strval = strdup(yytext); return NAME; }
+
+
+ /* strings */
+
+\'[^\'\n]*\' {
+
+ int c;
+
+ xmlParserlval.strval = strdup(xmlParsertext+1);
+
+ c = yyinput();
+
+ unput(c); /* just peeking */
+ if(c != '\'') {
+ flex_xml_ch+=xmlParserleng;
+ xmlParserlval.strval[xmlParserleng-2] = '\0';
+ return STRING_TOKEN;
+ } else
+ yymore();
+ }
+
+\'[^\'\n]*$ { flex_xml_ch+=xmlParserleng; xmlParsererror("Unterminated string"); }
+
+ /* */
+ /* Newline : advance the error reporting line number */
+ /* and grab the next line into flex_xml_linebuf */
+ /* */
+
+\n.* {flex_xml_ch=0; flex_xml_lineno++;
+ strcpy(flex_xml_linebuf,xmlParsertext+1);
+ yyless(1);
+ }
+
+[ \t\r]+ {flex_xml_ch+=xmlParserleng; } /* white space */
+
+"--".*$ {flex_xml_ch+=xmlParserleng; }; /* comment */
+"//".*$ {flex_xml_ch+=xmlParserleng; }; /* comment */
+"<?xml".*$ {flex_xml_ch+=xmlParserleng; }; /* comment */
+
+.|\n {flex_xml_ch+=xmlParserleng; fprintf(stderr,"Warning: unknown token (ignored)\n"); xmlParsererror(yytext);}
+
+%%
+
+int my_xmlParser_yyinput(char *buf, int max_size){
+ int c = 0;
+ int inchar = 0;
+
+ if(flex_xml_stringinput != NULL){
+ while(c<max_size){
+ if(flex_xml_stringinput[flex_xml_stringinput_ptr] != '\0'){
+ buf[c++] = flex_xml_stringinput[flex_xml_stringinput_ptr++];
+ }else{
+ break;
+ }
+ }
+ return(c);
+ }
+
+ if(flex_xml_fileinput != NULL){
+ while(c < max_size){
+ inchar = getc(flex_xml_fileinput);
+ if(inchar != EOF){
+ buf[c++] = inchar;
+ }else{
+ break;
+ }
+ }
+ return(c);
+ }
+
+ return(0);
+}
+
+void xmlParser_setfileinput(FILE *f){
+ xmlParserrestart(NULL);
+
+ flex_xml_fileinput = f;
+ flex_xml_stringinput = NULL;
+ flex_xml_lineno = 1;
+ flex_xml_ch = 0;
+}
+
+void xmlParser_setstringinput(char *s){
+ xmlParserrestart(NULL);
+
+ flex_xml_fileinput = NULL;
+ flex_xml_stringinput = s;
+ flex_xml_stringinput_ptr = 0;
+ flex_xml_lineno = 1;
+ flex_xml_ch = 0;
+}
+
+
+
+
+
Code Review / com / gs-lite.git / blobdiff