Beispiel #1
0
func (r *resolver) resolveMethod(s *scope, mth *ast.Method) error {
	o := r.resolveName(s, mth.InTypeName)
	if o == nil {
		return fmt.Errorf("failed to resolve name %q", mth.InTypeName)
	}
	mth.InType = o.last()

	o = r.resolveName(s, mth.OutTypeName)
	if o == nil {
		return fmt.Errorf("failed to resolve name %q", mth.OutTypeName)
	}
	mth.OutType = o.last()

	return nil
}
Beispiel #2
0
func (p *parser) readService(srv *ast.Service) *parseError {
	if err := p.readToken("service"); err != nil {
		return err
	}
	srv.Position = p.cur.astPosition()

	tok := p.next()
	if tok.err != nil {
		return tok.err
	}
	srv.Name = tok.value // TODO: validate

	if err := p.readToken("{"); err != nil {
		return err
	}

	// Parse methods
	for !p.done {
		tok := p.next()
		if tok.err != nil {
			return tok.err
		}
		switch tok.value {
		case "}":
			// end of service
			return nil
		case "rpc":
			// handled below
		default:
			return p.errorf(`got %q, want "rpc" or "}"`, tok.value)
		}

		tok = p.next()
		if tok.err != nil {
			return tok.err
		}
		mth := new(ast.Method)
		srv.Methods = append(srv.Methods, mth)
		mth.Position = tok.astPosition()
		mth.Name = tok.value // TODO: validate
		mth.Up = srv

		if err := p.readToken("("); err != nil {
			return err
		}

		tok = p.next()
		if tok.err != nil {
			return tok.err
		}
		mth.InTypeName = tok.value // TODO: validate
		if tok.value == "stream" {
			// If the next token isn't ")", this is a stream.
			tok = p.next()
			if tok.err != nil {
				return tok.err
			}
			if tok.value != ")" {
				mth.InTypeName = tok.value
				mth.ClientStreaming = true
			} else {
				p.back()
			}
		}
		if err := p.readToken(")"); err != nil {
			return err
		}
		if err := p.readToken("returns"); err != nil {
			return err
		}
		if err := p.readToken("("); err != nil {
			return err
		}
		tok = p.next()
		if tok.err != nil {
			return tok.err
		}
		mth.OutTypeName = tok.value // TODO: validate

		if tok.value == "stream" {
			// If the next token isn't ")", this is a stream.
			tok = p.next()
			if tok.err != nil {
				return tok.err
			}
			if tok.value != ")" {
				mth.OutTypeName = tok.value
				mth.ServerStreaming = true
			} else {
				p.back()
			}
		}
		if err := p.readToken(")"); err != nil {
			return err
		}
		if err := p.readToken(";"); err != nil {
			return err
		}
	}

	return p.errorf("unexpected EOF while parsing service")
}