コード例 #1
0
ファイル: parsing.go プロジェクト: krisgiesing/mojo
// STRUCT_BODY          -> {ATTR_STRUCT_ELEMENT}
// ATTR_STRUCT_ELEMENT  -> [ATTRIBUTES] STRUCT_ELEMENT
// STRUCT_ELEMENT       -> STRUCT_FIELD | ENUM_DECL | CONSTANT_DECL
func (p *Parser) parseStructBody(mojomStruct *mojom.MojomStruct) bool {
	if !p.OK() {
		return p.OK()
	}
	p.pushChildNode("structBody")
	defer p.popNode()

	// The struct body forms a new scope.
	p.pushScope(mojomStruct.InitAsScope(p.currentScope))
	defer p.popScope()

	rbraceFound := false
	for attributes := p.parseAttributes(); !rbraceFound; attributes = p.parseAttributes() {
		if !p.OK() {
			return false
		}
		nextToken := p.peekNextToken("I was parsing a struct body.")
		var duplicateNameError error = nil
		switch nextToken.Kind {
		case lexer.Name:
			mojomStruct.AddField(p.parseStructField(attributes))
		case lexer.Enum:
			if mojomEnum := p.parseEnumDecl(attributes); mojomEnum != nil {
				duplicateNameError = mojomStruct.AddEnum(mojomEnum)
			}
		case lexer.Const:
			if constant := p.parseConstDecl(attributes); constant != nil {
				duplicateNameError = mojomStruct.AddConstant(constant)
			}
		case lexer.RBrace:
			rbraceFound = true
			if attributes != nil {
				message := "Struct body ends with extraneouss attributes."
				p.err = &ParseError{ParserErrorCodeBadAttributeLocation, message}
			}
			break
		default:
			p.unexpectedTokenError(nextToken, "field, enum or constant declaration")
			return false
		}
		if p.OK() && duplicateNameError != nil {
			p.err = &ParseError{ParserErrorCodeDuplicateDeclaration, duplicateNameError.Error()}
			return false
		}
	}
	if p.OK() {
		mojomStruct.ComputeFieldOrdinals()
	}
	return p.OK()
}
コード例 #2
0
// STRUCT_BODY          -> {ATTR_STRUCT_ELEMENT}
// ATTR_STRUCT_ELEMENT  -> [ATTRIBUTES] STRUCT_ELEMENT
// STRUCT_ELEMENT       -> STRUCT_FIELD | ENUM_DECL | CONSTANT_DECL
func (p *Parser) parseStructBody(mojomStruct *mojom.MojomStruct) bool {
	if !p.OK() {
		return p.OK()
	}
	p.pushChildNode("structBody")
	defer p.popNode()

	// The struct body forms a new scope.
	p.pushScope(mojomStruct.InitAsScope(p.currentScope))
	defer p.popScope()

	rbraceFound := false
	for attributes := p.parseAttributes(); !rbraceFound; attributes = p.parseAttributes() {
		if !p.OK() {
			return false
		}
		nextToken := p.peekNextToken("I was parsing a struct body.")
		dupeMessage := ""
		switch nextToken.Kind {
		case lexer.NAME:
			mojomStruct.AddField(p.parseStructField(attributes))
		case lexer.ENUM:
			if mojomEnum, nameToken := p.parseEnumDecl(attributes); mojomEnum != nil {
				dupeMessage = p.duplicateNameMessage(mojomStruct.AddEnum(mojomEnum), nameToken)
			}
		case lexer.CONST:
			if constant, nameToken := p.parseConstDecl(attributes); constant != nil {
				dupeMessage = p.duplicateNameMessage(mojomStruct.AddConstant(constant), nameToken)
			}
		case lexer.RBRACE:
			rbraceFound = true
			if attributes != nil {
				message := "Struct body ends with extranesous attributes."
				p.err = &ParseError{E_BAD_ATTRIBUTE_LOCATION, message}
			}
			break
		default:
			p.unexpectedTokenError(nextToken, "field, enum or constant declaration")
			return false
		}
		if p.OK() && len(dupeMessage) > 0 {
			p.err = &ParseError{E_DUPLICATE_DECLARATION, dupeMessage}
			return false
		}
	}
	if p.OK() {
		mojomStruct.ComputeFieldOrdinals()
	}
	return p.OK()
}