From cea3e47938322b97c318dea38dc0d649e196dc1b Mon Sep 17 00:00:00 2001
From: Ben Culkin <scorpress@gmail.com>
Date: Tue, 16 Aug 2022 23:03:27 -0400
Subject: Refactor to add backtracking support

This probably doesn't help w/ error messages, but it enables some cool
ideas where syntax can be reused in cases where it would otherwise be
invalid
---
 JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java')

diff --git a/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java b/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java
index bfe5ab3..df17595 100644
--- a/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java
+++ b/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java
@@ -3,6 +3,8 @@ package bjc.pratt.blocks;
 import java.util.function.UnaryOperator;
 
 import bjc.pratt.ParserContext;
+import bjc.pratt.commands.CommandResult;
+import bjc.pratt.commands.CommandResult.Status;
 import bjc.pratt.tokens.Token;
 import bjc.data.Tree;
 import bjc.utils.parserutils.ParserException;
@@ -45,13 +47,15 @@ public class TriggeredParseBlock<K, V, C> implements ParseBlock<K, V, C> {
 	}
 
 	@Override
-	public Tree<Token<K, V>> parse(final ParserContext<K, V, C> ctx) throws ParserException {
+	public CommandResult<K, V> parse(final ParserContext<K, V, C> ctx) throws ParserException {
 		final C newState = onEntr.apply(ctx.state);
 
 		final ParserContext<K, V, C> newCtx = new ParserContext<>(ctx.tokens, ctx.parse, newState);
 
-		final Tree<Token<K, V>> res = sourc.parse(newCtx);
+		final CommandResult<K,V> res = sourc.parse(newCtx);
 
+		if (res.status != Status.SUCCESS) return res;
+		
 		ctx.state = onExt.apply(newState);
 
 		return res;
-- 
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