Method charAt

parser.go:648–653

charAt() returns the byte at the offset in the input source string. because the Go tokenizer discards white space, we need this method in order to check for, for example, a space after an identifier in parsing an implicit expression, because that would denote the end of that simple expression in Pus

(offset int)

// expression, because that would denote the end of that simple expression in
// Pushup syntax.
func (p *codeParser) charAt(offset int) byte {
	if len(p.parser.src) > offset {
		return p.parser.src[offset]
	}
	return 0
}

func (p *codeParser) prev() goToken {
	if tok, ok := Value(p.acceptedToken); ok {