fix: GetChild checks children length properly

jakubtomany · jakubtomany · commit 8fb689e7a576 · 2025-03-13T09:30:30.000+01:00
fixes the issue when GetChild is called with index == len(prc.children)

Signed-off-by: Jakub Tomany &lt;34450735+jakubtomany@users.noreply.github.com&gt;
diff --git a/runtime/Go/antlr/v4/parser_rule_context.go b/runtime/Go/antlr/v4/parser_rule_context.go
@@ -161,7 +161,7 @@ func (prc *BaseParserRuleContext) AddErrorNode(badToken Token) *ErrorNodeImpl {
 }
 
 func (prc *BaseParserRuleContext) GetChild(i int) Tree {
-	if prc.children != nil && len(prc.children) >= i {
+	if prc.children != nil && len(prc.children) > i {
 		return prc.children[i]
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -161,7 +161,7 @@ func (prc BaseParserRuleContext) AddErrorNode(badToken Token) ErrorNodeImpl {`
`161`	`161`	`}`
`162`	`162`
`163`	`163`	`func (prc *BaseParserRuleContext) GetChild(i int) Tree {`
`164`		`- if prc.children != nil && len(prc.children) >= i {`
	`164`	`+ if prc.children != nil && len(prc.children) > i {`
`165`	`165`	`return prc.children[i]`
`166`	`166`	`}`
`167`	`167`