X-Git-Url: https://git.draconx.ca/gitweb/gob-dx.git/blobdiff_plain/4f09fcd75bb0057d90c7431f7db57ca2c5a6c028..5cfe51ee2287165feb0cf006901bbbc2b961f3b8:/src/lexer.l

diff --git a/src/lexer.l b/src/lexer.l
index 95cbf52..37ec65a 100644
--- a/src/lexer.l
+++ b/src/lexer.l
@@ -23,6 +23,7 @@
 #include "config.h"
 #include <glib.h>
 #include <string.h>
+#include <ctype.h>
 
 #include "treefuncs.h"
 #include "parse.h"
@@ -46,6 +47,8 @@ GList *include_files = NULL;
 static int look_for_includes = 0;
 
 int line_no = 1;
+/* last filename parsed from a #line directive */
+char *hline_filename = NULL;
 
 static void
 clear_cbuf(void)
@@ -126,6 +129,44 @@ REJECT;
 }
 
 \/\/.*$			{ ; /*comment, ignore*/ }
+
+<*>^#[ \t]*line[ \t]+[0-9]+([ \t]\"[^\n\r\f\"]*\")? {
+	char *p;
+	char *number;
+	char *filename;
+	char *str=g_strdup(yytext);
+
+	/* find first digit of line number */
+	p=str;
+	while(*p&&!isdigit(*p)) p++;
+	number=p;
+  
+	/* find end of line number */
+	while(*p&&isdigit(*p)) p++;
+	if(*p) *p++=0;
+
+	/* find beginning of filename */
+	p=strchr(p,'"');
+	if(p) p++;
+	filename=p;
+
+	/* find end of filename */
+	if(p) p=strchr(p,'"');
+	if(p) *p=0;
+
+	/* stash number (minus one because we don't count this line) */  
+	if(number) line_no=atoi(number)-1;
+
+	/* stash filename */
+	if(filename) {
+		if(hline_filename) g_free(hline_filename);
+		hline_filename=g_strdup(filename);
+	}
+  
+	/* clean up */
+	g_free(str);
+}
+
 <C_CODE>^#[ \t]*include[ \t][<"][^\n">]*[>"] {
 	if(look_for_includes==1) {
 		char *p;
@@ -459,7 +500,7 @@ class		{
 				return '}';
 			}
 
-<CLASS_CODE,CLASS_CODE_I,INITIAL>[\t ]	;  /*ignore*/
+<CLASS_CODE,CLASS_CODE_I,INITIAL>[\f\t ]	;  /*ignore*/
 
 <*>.		{
 			yylval.line = line_no;