public Parameter(int lineNum, int colNum, int charIndex, VariableDeclaration varDec, ArgType argType)
: base(lineNum, colNum, charIndex)
{
this.TypeMark = varDec.TypeMark;
this.VariableName = varDec.VariableName;
this.ArraySize = varDec.ArraySize;
Type = argType;
}
public VariableDeclaration ParseVariableDeclaration()
{
VariableDeclaration result;
// Typemark
Token typeMarkToken = Scanner.ConsumeTypemarkToken();
result = new VariableDeclaration(typeMarkToken.CodeLineNumber, typeMarkToken.CodeColumnNumber, typeMarkToken.CodeCharacterIndex);
if (typeMarkToken.Type == Token.Types.BOOL)
result.TypeMark = Lexer.TypeMarks.BOOL;
else if (typeMarkToken.Type == Token.Types.FLOAT)
result.TypeMark = Lexer.TypeMarks.FLOAT;
else if (typeMarkToken.Type == Token.Types.INT)
result.TypeMark = Lexer.TypeMarks.INT;
else if (typeMarkToken.Type == Token.Types.STRING)
result.TypeMark = Lexer.TypeMarks.STRING;
else
ErrorHandler.ParserError(Scanner, "Fatal error: unreachable code reached.");
// Name
result.VariableName = Scanner.ConsumeIdentifierToken().Text;
// Optional array size
if (NextTokenType == Token.Types.OPEN_BRACKET)
{
Scanner.ConsumeOperatorToken(Token.Types.OPEN_BRACKET);
int arraySize = Scanner.ConsumeInt();
if (arraySize > 0)
result.ArraySize = arraySize;
else
ErrorHandler.ParserError(Scanner, "Array size must at least 1.");
Scanner.ConsumeOperatorToken(Token.Types.CLOSE_BRACKET);
}
return result;
}
