Remove duplicate line counting code. Make the remaining implementation have a two element cache.

darcs-hash:20060205131035-ac50b-885c6ba87a6d16aa48dfa7ee4608ae8891c71724.gz

function.c

@@ -18,6 +18,7 @@
 #include "intern.h"
 #include "event.h"
 #include "reader.h"
+#include "parse_util.h"
 
 
 /**
@@ -65,18 +66,6 @@ void function_destroy()
 	hash_destroy( &function );
 }
 
-static int count_lineno( const wchar_t *str, int len )
-{
-	int res = 0;
-	int i;
-	for( i=0; i<len; i++ )
-	{
-		if( str[i] == L'\n' )
-			res++;
-	}
-	return res;
-}
-
 
 void function_add( const wchar_t *name, 
 				   const wchar_t *val,
@@ -88,13 +77,12 @@ void function_add( const wchar_t *name,
 	wchar_t *cmd_end;
 	function_data_t *d;
 	
-	if( function_exists( name ) )
-		function_remove( name );
+	function_remove( name );
 	
 	d = malloc( sizeof( function_data_t ) );
-	d->definition_offset = count_lineno( parser_get_buffer(), current_block->tok_pos );
+	d->definition_offset = parse_util_lineno( parser_get_buffer(), current_block->tok_pos );
 	d->cmd = wcsdup( val );
-
+	
 	cmd_end = d->cmd + wcslen(d->cmd)-1;
 	while( (cmd_end>d->cmd) && wcschr( L"\n\r\t ", *cmd_end ) )
 	{
@@ -103,7 +91,7 @@ void function_add( const wchar_t *name,
 	
 	d->desc = desc?wcsdup( desc ):0;
 	d->is_binding = is_binding;
-	d->definition_file = reader_current_filename()?intern(reader_current_filename()):0;
+	d->definition_file = intern(reader_current_filename());
 	
 	hash_put( &function, intern(name), d );
 	
@@ -125,18 +113,18 @@ void function_remove( const wchar_t *name )
 	function_data_t *d;
 	event_t ev;
 
-	ev.type=EVENT_ANY;
-	ev.function_name=name;	
-	event_remove( &ev );
-
 	hash_remove( &function,
 				 name,
 				 (const void **) &key,
 				 (const void **)&d );
 
-	if( !d )
+	if( !key )
 		return;
 
+	ev.type=EVENT_ANY;
+	ev.function_name=name;	
+	event_remove( &ev );
+
 	clear_function_entry( key, d );
 }
 	

parse_util.c

@@ -21,6 +21,51 @@
 #include "tokenizer.h"
 #include "parse_util.h"
 
+int parse_util_lineno( const wchar_t *str, int len )
+{
+	static int res = 1;
+	static int i=0;
+	static const wchar_t *prev_str = 0;
+
+	static const wchar_t *prev_str2 = 0;
+	static int i2 = 0;
+	static int res2 = 1;
+	
+	if( str != prev_str || i>len )
+	{
+		if( prev_str2 == str && i2 <= len )
+		{
+			const wchar_t *tmp_str = prev_str;
+			int tmp_i = i;
+			int tmp_res = res;
+			prev_str = prev_str2;
+			i=i2;
+			res=res2;
+			
+			prev_str2 = tmp_str;
+			i2 = tmp_i;
+			res2 = tmp_res;
+		}
+		else
+		{
+			prev_str2 = prev_str;
+			i2 = i;
+			res2=res;
+				
+			prev_str = str;
+			i=0;
+			res=1;
+		}
+	}
+	
+	for( ; i<len; i++ )
+	{
+		if( str[i] == L'\n' )
+			res++;
+	}
+	return res;
+}
+
 int parse_util_locate_cmdsubst( const wchar_t *in, 
 								const wchar_t **begin, 
 								const wchar_t **end,

parse_util.h

@@ -47,4 +47,7 @@ void parse_util_token_extent( const wchar_t *buff,
 							  const wchar_t **prev_begin, 
 							  const wchar_t **prev_end );
 
+int parse_util_lineno( const wchar_t *str, int len );
+
+
 #endif

parser.c

@@ -37,6 +37,7 @@ The fish parser. Contains functions for parsing code.
 #include "event.h"
 #include "translate.h"
 #include "intern.h"
+#include "parse_util.h"
 
 /**
    Maximum number of block levels in code. This is not the same as
@@ -1122,11 +1123,13 @@ int parser_get_lineno()
 {
 	const wchar_t *whole_str;
 	const wchar_t *function_name;
+
+	int lineno;
 	
-	static const wchar_t *prev_str = 0;
+/*	static const wchar_t *prev_str = 0;
 	static int i=0;
 	static int lineno=1;
-
+*/
 	if( !current_tokenizer )
 		return -1;
 	
@@ -1135,20 +1138,7 @@ int parser_get_lineno()
 	if( !whole_str )
 		return -1;
 	
-	if( whole_str != prev_str || i>current_tokenizer_pos )
-	{
-		prev_str = whole_str;
-		i=0;
-		lineno = 0;
-	}
-
-	for( ; i<current_tokenizer_pos && whole_str[i]; i++ )
-	{
-		if( whole_str[i] == L'\n' )
-		{
-			lineno++;
-		}
-	}
+	lineno = parse_util_lineno( whole_str, current_tokenizer_pos );
 
 	if( (function_name = is_function()) )
 	{