private InterfaceDeclaringNode InterfaceDeclaring()
{
InterfaceDeclaringNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
Accept(Token.TokenType.Interface);
IdentifierNode itsName = new IdentifierNode(_currentToken);
Accept(Token.TokenType.Identifier);
Accept(Token.TokenType.LeftBrace);
DeclaringSequenceNode itsInterfaceMethodDeclarings = InterfaceMethods();
Accept(Token.TokenType.RightBrace);
itsAST = new InterfaceDeclaringNode(itsName, itsInterfaceMethodDeclarings, itsPos);
return(itsAST);
}
private DeclaringSequenceNode ParseMethodDeclarings()
{
DeclaringSequenceNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
DeclaringNode itsMethod = ParseMethodDeclaring();
if (_currentToken.Type == Token.TokenType.Method)
{
DeclaringSequenceNode itsNextMethods = ParseMethodDeclarings();
itsAST = new MultipleDeclaringSequenceNode(itsMethod, itsNextMethods, itsPos);
}
else
{
itsAST = new SingleDeclaringSequenceNode(itsMethod, itsPos);
}
return(itsAST);
}
private DeclaringSequenceNode ParseVariableDeclarings()
{
DeclaringSequenceNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
DeclaringNode itsVar = ParseVariableDeclaring();
if (_currentToken.Type == Token.TokenType.Var)
{
DeclaringSequenceNode itsNextVars = ParseVariableDeclarings();
itsAST = new MultipleDeclaringSequenceNode(itsVar, itsNextVars, itsPos);
}
else
{
itsAST = new SingleDeclaringSequenceNode(itsVar, itsPos);
}
return(itsAST);
}
private DeclaringSequenceNode ParseImplements()
{
DeclaringSequenceNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
DeclaringNode itsImplement = ParseImplement();
if (_currentToken.Type == Token.TokenType.Comma)
{
Accept(Token.TokenType.Comma);
DeclaringSequenceNode itsNextImplements = ParseImplements();
itsAST = new MultipleDeclaringSequenceNode(itsImplement, itsNextImplements, itsPos);
}
else
{
itsAST = new SingleDeclaringSequenceNode(itsImplement, itsPos);
}
return(itsAST);
}
private ClassDeclaringNode ClassDeclaring()
{
ClassDeclaringNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
Accept(Token.TokenType.Class);
IdentifierNode itsName = new IdentifierNode(_currentToken);
Accept(Token.TokenType.Identifier);
DeclaringSequenceNode itsImplements = Implements();
Accept(Token.TokenType.LeftBrace);
DeclaringSequenceNode itsVars = VariableDeclarings();
DeclaringNode itsConstructor = ConstructorDeclaring();
DeclaringSequenceNode itsMethods = MethodDeclarings();
Accept(Token.TokenType.RightBrace);
itsAST = new ClassDeclaringNode(itsName, itsImplements, itsVars, itsConstructor, itsMethods, itsPos);
return(itsAST);
}
private ConstructorDeclaringNode ConstructorDeclaring()
{
ConstructorDeclaringNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
Accept(Token.TokenType.Constructor);
IdentifierNode itsName = new IdentifierNode(_currentToken);
TypeNode itsType = new ClassTypeNode(itsName, itsPos);
Accept(Token.TokenType.Identifier);
Accept(Token.TokenType.LeftParen);
ParameterSequenceNode itsParams = Parameters();
Accept(Token.TokenType.RightParen);
Accept(Token.TokenType.LeftBrace);
DeclaringSequenceNode itsVars = VariableDeclarings();
ActionSequenceNode itsActions = ActionStatements();
Accept(Token.TokenType.RightBrace);
itsAST = new ConstructorDeclaringNode(itsName, itsType, itsParams, itsVars, itsActions, itsPos);
return(itsAST);
}
private MethodDeclaringNode ParseMethodDeclaring()
{
MethodDeclaringNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
Accept(Token.TokenType.Method);
TypeNode itsType = ReturnType();
IdentifierNode itsName = new IdentifierNode(_currentToken);
Accept(Token.TokenType.Identifier);
Accept(Token.TokenType.LeftParen);
ParameterSequenceNode itsParams = Parameters();
Accept(Token.TokenType.RightParen);
Accept(Token.TokenType.LeftBrace);
DeclaringSequenceNode itsVars = VariableDeclarings();
ActionSequenceNode itsActions = ActionStatements();
ReturnActionNode itsReturn = ReturnStatement();
Accept(Token.TokenType.RightBrace);
itsAST = new MethodDeclaringNode(itsName, itsType, itsParams, itsVars, itsActions, itsReturn, itsPos);
return(itsAST);
}
public ProgramNode(DeclaringSequenceNode declarings, SourceCodePosition pos) : base(pos)
{
Declarings = declarings;
}
