bool Expr::parseRelationalExpression() {
PARSER_FLOW_TRACER();
/* right associative */
FAIL_IF_NOT(parseAdditiveExpression());
switch(ahead().type()) {
case T_LESS_THAN_EQUAL:
case T_GREATER_THAN_EQUAL:
case T_LEFT_ANGLE:
case T_RIGHT_ANGLE:
case T_EQUAL:
case T_INEQUAL: {
Model::ExprBinary::Ptr result = new Model::ExprBinary;
result->setLeftOperand(model());
result->setBinaryOperator(tokenToBinary(ahead().type()));
next();
FAIL_IF_NOT(parseAdditiveExpression());
result->setRightOperand(model());
setModel(result); }
}
return true;
}
Value parseShiftExpression(void) {
Value v1, v2;
v1 = parseAdditiveExpression();
while (token == TOK_LSHIFT || token == TOK_RSHIFT) {
if (token == TOK_LSHIFT) {
getToken();
v2 = parseAdditiveExpression();
if (v1.sym != NULL || v2.sym != NULL) {
error("shifting of symbols not supported, line %d", lineno);
}
v1.con <<= v2.con;
} else
if (token == TOK_RSHIFT) {
getToken();
v2 = parseAdditiveExpression();
if (v1.sym != NULL || v2.sym != NULL) {
error("shifting of symbols not supported, line %d", lineno);
}
v1.con >>= v2.con;
}
}
