public Node ParameterDeclaration()
{
var paramList = new ParameterDeclarationList();
while (CurrentToken == TokenCategory.IDENTIFIER)
{
var tempList = new VariableDeclarationList();
Node idToken = new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
};
tempList.Add(idToken);
while (CurrentToken == TokenCategory.COMMA)
{
Expect(TokenCategory.COMMA);
tempList.Add(new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
});
}
Expect(TokenCategory.DECLARATION);
var tipo = Type();
//declarationList.Add(Type());
foreach (var node in tempList)
{
tipo.Add(node);
}
paramList.Add(tipo);
Expect(TokenCategory.ENDLINE);
}
return(paramList);
}
public Node ProcedureDeclaration()
{
var result = new ProcedureDeclaration()
{
AnchorToken = Expect(TokenCategory.PROCEDURE)
};
result.Add(new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
});
Expect(TokenCategory.PARENTHESIS_OPEN);
var parameterList = new ParameterDeclarationList();
if (CurrentToken == TokenCategory.IDENTIFIER)
{
while (CurrentToken == TokenCategory.IDENTIFIER)
{
parameterList.Add(VariableDeclaration());
}
}
result.Add(parameterList);
Expect(TokenCategory.PARENTHESIS_CLOSE);
var type = new TypeNode();
if (CurrentToken == TokenCategory.COLON)
{
Expect(TokenCategory.COLON);
if (CurrentToken != TokenCategory.LIST)
{
type.Add(SimpleType());
}
else if (CurrentToken == TokenCategory.LIST)
{
type.Add(ListType());
}
}
result.Add(type);
Expect(TokenCategory.SEMICOLON);
var constantList = new ConstantDeclarationList();
if (firstOfDeclaration.Contains(CurrentToken) && CurrentToken == TokenCategory.CONST)
{
constantList.AnchorToken = Expect(TokenCategory.CONST);
do
{
constantList.Add(ConstantDeclaration());
} while (CurrentToken == TokenCategory.IDENTIFIER);
}
result.Add(constantList);
var variableList = new VariableDeclarationList();
if (firstOfDeclaration.Contains(CurrentToken) && CurrentToken == TokenCategory.VAR)
{
variableList.AnchorToken = Expect(TokenCategory.VAR);
do
{
variableList.Add(VariableDeclaration());
} while (CurrentToken == TokenCategory.IDENTIFIER);
}
result.Add(variableList);
Expect(TokenCategory.BEGIN);
var statementList = new StatementList();
if (firstOfStatement.Contains(CurrentToken))
{
while (firstOfStatement.Contains(CurrentToken))
{
statementList.Add(Statement());
}
}
result.Add(statementList);
Expect(TokenCategory.END);
Expect(TokenCategory.SEMICOLON);
return(result);
}
public Node ProcedureDeclaration()
{
var result = new ProcedureDeclaration();
Expect(TokenCategory.PROCEDURE);
result.AnchorToken = Expect(TokenCategory.IDENTIFIER);
Expect(TokenCategory.LEFT_PAR);
var parameterDeclarationList = new ParameterDeclarationList();
while (CurrentToken == TokenCategory.IDENTIFIER)
{
parameterDeclarationList.Add(ParameterDeclaration());
}
result.Add(parameterDeclarationList);
Expect(TokenCategory.RIGHT_PAR);
if (CurrentToken == TokenCategory.COLON)
{
Expect(TokenCategory.COLON);
result.Add(Type());
}
Expect(TokenCategory.SEMICOLON);
if (CurrentToken == TokenCategory.CONST)
{
var constantDeclarationList = new ConstantDeclarationList()
{
AnchorToken = Expect(TokenCategory.CONST)
};
do
{
constantDeclarationList.Add(ConstantDeclaration());
} while (CurrentToken == TokenCategory.IDENTIFIER);
result.Add(constantDeclarationList);
}
if (CurrentToken == TokenCategory.VAR)
{
var variableDeclarationList = new VariableDeclarationList()
{
AnchorToken = Expect(TokenCategory.VAR)
};
do
{
variableDeclarationList.Add(VariableDeclaration());
} while (CurrentToken == TokenCategory.IDENTIFIER);
result.Add(variableDeclarationList);
}
Expect(TokenCategory.BEGIN);
var statementList = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
statementList.Add(Statement());
}
result.Add(statementList);
Expect(TokenCategory.END);
Expect(TokenCategory.SEMICOLON);
return(result);
}