From 84d4bc6f0f38e237f2a40faaf75e921211ab0ac6 Mon Sep 17 00:00:00 2001
From: randomguy3 <randomguy3@7c02a99a-9b00-45e3-bf44-6f3dd7fddb64>
Date: Sat, 10 Mar 2012 16:16:25 +0000
Subject: Better parse error reporting

git-svn-id: https://tikzit.svn.sourceforge.net/svnroot/tikzit/trunk@424 7c02a99a-9b00-45e3-bf44-6f3dd7fddb64
---
 tikzit/src/common/TikzGraphAssembler.m | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'tikzit/src/common/TikzGraphAssembler.m')

diff --git a/tikzit/src/common/TikzGraphAssembler.m b/tikzit/src/common/TikzGraphAssembler.m
index 5354710..5e60b05 100644
--- a/tikzit/src/common/TikzGraphAssembler.m
+++ b/tikzit/src/common/TikzGraphAssembler.m
@@ -22,6 +22,7 @@
 //  
 
 #import "TikzGraphAssembler.h"
+#import "NSError+Tikzit.h"
 
 extern int yyparse(void);
 extern int yylex(void);  
@@ -36,7 +37,10 @@ static id currentAssembler = nil;
 void yyerror(const char *str) {
 	NSLog(@"Parse error: %s", str);
 	if (currentAssembler != nil) {
-		[currentAssembler invalidate];
+		NSError *error = [NSError
+			errorWithMessage:[NSString stringWithCString:str]
+						code:TZ_ERR_PARSE];
+		[currentAssembler invalidateWithError:error];
 	}
 }
 
@@ -56,6 +60,7 @@ int yywrap() {
 }
 
 - (Graph*)graph { return graph; }
+- (NSError*)lastError { return lastError; }
 
 - (GraphElementData *)data {
 	if (currentNode != nil) {
@@ -95,6 +100,7 @@ int yywrap() {
 	yylex_destroy();
 	
 	[nodeMap release];
+	nodeMap = nil;
 	
 	currentAssembler = nil;
 	[pool drain];
@@ -144,12 +150,19 @@ int yywrap() {
 
 - (void)dealloc {
 	[graph release];
+	[lastError release];
 	[super dealloc];
 }
 
 - (void)invalidate {
 	[graph release];
 	graph = nil;
+	lastError = nil;
+}
+
+- (void)invalidateWithError:(NSError*)error {
+	[self invalidate];
+	lastError = [error retain];
 }
 
 + (void)setup {
-- 
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