int PP_Expression::logical_OR_expression()
{
int value = logical_AND_expression();
if (test(PP_OROR))
return logical_OR_expression() || value;
return value;
}
Expression *ExpressionBuilder::logical_OR_expression()
{
Expression *value = logical_AND_expression();
if (test(Token_or))
return createBinaryExpression(Expression::OrOp, value, logical_OR_expression());
return value;
}
int PP_Expression::conditional_expression()
{
int value = logical_OR_expression();
if (test(PP_QUESTION)) {
int alt1 = conditional_expression();
int alt2 = test(PP_COLON) ? conditional_expression() : 0;
return value ? alt1 : alt2;
}
return value;
}
Expression *ExpressionBuilder::conditional_expression()
{
Expression *value = logical_OR_expression();
if (test('?')) {
Expression *leftExpression = conditional_expression();
Expression *rightExpression;
if(test(':'))
rightExpression = conditional_expression();
else
rightExpression = createIntLiteral(0);
return createConditionalExpression(value, leftExpression, rightExpression);
}
return value;
}
/* FIRST(conditional expression)={AVID_T, FPL_T,INL_T,SVID_T, STR_T}
<conditional expression> ->
<logical OR expression>
Author: Kwok Hong Kelvin Chan */
void conditional_expression(void){
logical_OR_expression();
gen_incode("Conditional expression parsed");
}
