Method parseNumber

parser/parser_common.go:263–296

(pos Pos)

}

func (p *Parser) parseNumber(pos Pos) (*NumberLiteral, error) {
	var err error

	lastToken := p.last()
	switch {
	case p.matchTokenKind(TokenKindInt):
		err = p.expectTokenKind(TokenKindInt)
	case p.matchTokenKind(TokenKindFloat):
		err = p.expectTokenKind(TokenKindFloat)
	case p.matchTokenKind(TokenKindDot):
		_ = p.lexer.consumeToken()
		lastToken = p.last()
		if err := p.expectTokenKind(TokenKindInt); err != nil {
			return nil, err
		}
		if lastToken.Base != 10 {
			return nil, fmt.Errorf("invalid decimal literal: %q", lastToken.String)
		}
		lastToken.String = "." + lastToken.String
		lastToken.Kind = TokenKindFloat
	default:
		return nil, fmt.Errorf("expected <int> or <float>, but got %q", p.lastTokenKind())
	}
	if err != nil {
		return nil, err
	}
	number := &NumberLiteral{
		NumPos:  pos,
		NumEnd:  lastToken.End,
		Literal: lastToken.String,
		Base:    lastToken.Base,
	}
	return number, nil
}

func (p *Parser) parseString(pos Pos) (*StringLiteral, error) {
	lastToken := p.last()