fix(parser): check for extra symbols in expression

HeavyPunk · HeavyPunk · commit 08e3a816f779 · 2025-05-20T17:08:00.000+05:00
diff --git a/pkg/parser/parser.go b/pkg/parser/parser.go
@@ -651,6 +651,12 @@ func ParseExpr(e string) (Expr, string, error) {
 	if err != nil {
 		return exp, e, err
 	}
+
+  // all symbols should be parsed, otherwise we have an syntax error
+  if e != "" {
+    return nil, "", ErrUnexpectedCharacter
+  }
+
 	exp, err = defineMap.expandExpr(exp.(*expr))
 	return exp, e, err
 }

Original file line number	Diff line number	Diff line change
`@@ -651,6 +651,12 @@ func ParseExpr(e string) (Expr, string, error) {`
`651`	`651`	`if err != nil {`
`652`	`652`	`return exp, e, err`
`653`	`653`	`}`
	`654`	`+`
	`655`	`+ // all symbols should be parsed, otherwise we have an syntax error`
	`656`	`+ if e != "" {`
	`657`	`+ return nil, "", ErrUnexpectedCharacter`
	`658`	`+ }`
	`659`	`+`
`654`	`660`	`exp, err = defineMap.expandExpr(exp.(*expr))`
`655`	`661`	`return exp, e, err`
`656`	`662`	`}`