Method safeCharAt

go/engine/expr/parser.go:384–389

(pos int)

}

func (p *parser) safeCharAt(pos int) byte {
	if pos >= len(p.input) {
		return 0
	}
	return p.input[pos]
}

func isIdentChar(ch byte) bool {
	return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9') || ch == '_'