public void addElse(ElseExpression elseExp)
{
elseBlock = elseExp;
}
public IfExpression parseIfExpression()
{
IfExpression ifExp = new IfExpression();
ElseIfExpression elseIfExp;
ElseExpression elseExp;
nextTokenIfEquals(Token.TokenValue.IF);
nextTokenIfEquals(Token.TokenValue.LPAR);
if (currentTokenEquals(Token.TokenValue.RPAR))
{
throw new EmptyExpression(lineNumber, colNumber);
}
ifExp.condition = parseSimpleExpression();
if (ifExp.condition.getExpressionType() != ObjectType.booleanType)
{
throw new IncompatibleTypesException(lineNumber, colNumber, ObjectType.booleanType, ifExp.condition.getExpressionType());
}
nextTokenIfEquals(Token.TokenValue.RPAR);
nextTokenIfEquals(Token.TokenValue.LBRACE);
//if(e){}
if (currentTokenEquals(Token.TokenValue.RBRACE))
{
ifExp.body = null;
nextToken();
}
//if(e){ e }
else
{
ifExp.body = parseExpression();
nextTokenIfEquals(Token.TokenValue.RBRACE);
}
while (currentTokenEquals(Token.TokenValue.ELSEIF))
{
elseIfExp = new ElseIfExpression();
nextToken();
nextTokenIfEquals(Token.TokenValue.LPAR);
if (currentTokenEquals(Token.TokenValue.RPAR))
{
throw new EmptyExpression(lineNumber, colNumber);
}
elseIfExp.condition = parseSimpleExpression();
if (elseIfExp.condition.getExpressionType() != ObjectType.booleanType)
{
throw new IncompatibleTypesException(lineNumber, colNumber, ObjectType.booleanType, elseIfExp.condition.getExpressionType());
}
nextTokenIfEquals(Token.TokenValue.RPAR);
nextTokenIfEquals(Token.TokenValue.LBRACE);
//else if(e){}
if (currentTokenEquals(Token.TokenValue.RBRACE))
{
elseIfExp.corps = null;
nextToken();
}
//else if(e){ e }
else
{
elseIfExp.corps = parseExpression();
nextTokenIfEquals(Token.TokenValue.RBRACE);
}
ifExp.addElseIf(elseIfExp);
}
if (currentTokenEquals(Token.TokenValue.ELSE))
{
elseExp = new ElseExpression();
nextToken();
nextTokenIfEquals(Token.TokenValue.LBRACE);
//else{}
if (currentTokenEquals(Token.TokenValue.RBRACE))
{
elseExp.body = null;
nextToken();
}
//else{ e }
else
{
elseExp.body = parseExpression();
nextTokenIfEquals(Token.TokenValue.RBRACE);
}
ifExp.addElse(elseExp);
}
return ifExp;
}
public void addElse(ElseExpression elseExp)
{
elseBlock = elseExp;
}