Method SyntaxError

parser/parser.go:920–939

ANTLR Parse listener implementations

(recognizer antlr.Recognizer, offendingSymbol any, line, column int, msg string, e antlr.RecognitionException)

// ANTLR Parse listener implementations
func (p *parser) SyntaxError(recognizer antlr.Recognizer, offendingSymbol any, line, column int, msg string, e antlr.RecognitionException) {
	offset := p.helper.sourceInfo.ComputeOffset(int32(line), int32(column))
	l := p.helper.getLocationByOffset(offset)
	// Hack to keep existing error messages consistent with previous versions of CEL when a reserved word
	// is used as an identifier. This behavior needs to be overhauled to provide consistent, normalized error
	// messages out of ANTLR to prevent future breaking changes related to error message content.
	if strings.Contains(msg, "no viable alternative") {
		msg = reservedIdentifier.ReplaceAllString(msg, mismatchedReservedIdentifier)
	}
	// Ensure that no more than 100 syntax errors are reported as this will halt attempts to recover from a
	// seriously broken expression.
	if p.errorReports < p.errorReportingLimit {
		p.errorReports++
		p.errors.syntaxError(l, msg)
	} else {
		tme := &tooManyErrors{errorReportingLimit: p.errorReportingLimit}
		p.errors.syntaxError(l, tme.Error())
		panic(tme)
	}
}

func (p *parser) ReportAmbiguity(recognizer antlr.Parser, dfa *antlr.DFA, startIndex, stopIndex int, exact bool, ambigAlts *antlr.BitSet, configs *antlr.ATNConfigSet) {
	// Intentional