// lexOperationType lexes a query or mutation operation type.
func lexOperationType(l *lex.Lexer) lex.StateFn {
for {
r := l.Next()
if isNameSuffix(r) {
continue // absorb
}
l.Backup()
// l.Pos would be index of the end of operation type + 1.
word := l.Input[l.Start:l.Pos]
if word == "mutation" {
l.Emit(itemOpType)
l.Mode = mutationMode
} else if word == "fragment" {
l.Emit(itemOpType)
l.Mode = fragmentMode
} else if word == "query" {
l.Emit(itemOpType)
l.Mode = queryMode
} else {
if l.Mode == 0 {
l.Errorf("Invalid operation type")
}
}
break
}
return lexText
}
func lexOperationType(l *lex.Lexer) lex.StateFn {
for {
r := l.Next()
if isNameSuffix(r) {
continue // absorb
}
l.Backup()
word := l.Input[l.Start:l.Pos]
if word == "mutation" {
l.Emit(itemOpType)
l.Mode = mutationMode
} else if word == "query" {
l.Emit(itemOpType)
l.Mode = queryMode
}
break
}
return lexText
}