void MulExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
string newOp = null;
Unary(out child);
result.Add(child);
while (StartOf(4))
{
if (la.kind == 33)
{
Get();
newOp = "*";
}
else if (la.kind == 34)
{
Get();
newOp = "/";
}
else if (la.kind == 35)
{
Get();
newOp = "%";
}
else
{
Get();
newOp = "MOD";
}
Unary(out child);
result.Add(child, newOp);
}
expression = result.Simplify();
}
void Unary(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
string newOp = null;
if (la.kind == 31 || la.kind == 32 || la.kind == 36)
{
if (la.kind == 31)
{
Get();
newOp = "+";
}
else if (la.kind == 32)
{
Get();
newOp = "-";
}
else
{
Get();
newOp = "~";
}
}
Primary(out child);
result.Add(child); child.UnaryOp = newOp;
expression = result.Simplify();
}
void AndExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
EqlExpr(out child);
result.Add(child);
while (la.kind == 5)
{
Get();
bool negated = false;
if (la.kind == 7)
{
Get();
negated = true;
}
EqlExpr(out child);
if (negated)
{
child.UnaryOp = "NOT";
}
result.Add(child, "AND");
}
expression = result.Simplify();
}
void AddExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
string newOp = null;
MulExpr(out child);
result.Add(child);
while (la.kind == 31 || la.kind == 32)
{
if (la.kind == 31)
{
Get();
newOp = "+";
}
else
{
Get();
newOp = "-";
}
MulExpr(out child);
result.Add(child, newOp);
}
expression = result.Simplify();
}
void BitAndExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
AddExpr(out child);
result.Add(child);
while (la.kind == 30)
{
Get();
AddExpr(out child);
result.Add(child, "&");
}
expression = result.Simplify();
}
void BitOrExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
BitXorExpr(out child);
result.Add(child);
while (la.kind == 28)
{
Get();
BitXorExpr(out child);
result.Add(child, "|");
}
expression = result.Simplify();
}
void RootExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
bool negated = false;
if (la.kind == 7)
{
Get();
negated = true;
}
OrExpr(out child);
if (negated)
{
result.UnaryOp = "NOT";
}
result.Add(child);
expression = result.Simplify();
}
void RelExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
string newOp = null;
bool negated = false;
BitOrExpr(out child);
result.Add(child);
if (StartOf(2))
{
if (StartOf(3))
{
switch (la.kind)
{
case 22: {
Get();
newOp = "<";
break;
}
case 23: {
Get();
newOp = ">";
break;
}
case 24: {
Get();
newOp = "<=";
break;
}
case 25: {
Get();
newOp = ">=";
break;
}
case 26: {
Get();
newOp = ">=";
break;
}
case 27: {
Get();
newOp = "<=";
break;
}
}
BitOrExpr(out child);
result.Add(child, newOp);
}
else if (la.kind == 11)
{
Get();
if (la.kind == 7)
{
Get();
negated = true;
}
Expect(12);
result.Add(new NamedConstantExpression("NULL", negated, t.line, t.col), "IS");
}
else
{
if (la.kind == 7)
{
Get();
negated = true;
}
Expect(10);
BitOrExpr(out child);
result.Add(child, "BETWEEN");
Expect(5);
BitOrExpr(out child);
result.Add(child, "BETWEEN");
}
}
expression = result.Simplify();
}
void EqlExpr(out OqlExpression expression)
{
OqlExpression child;
OqlExpression result = new OqlExpression(la.line, la.col);
string newOp = null;
bool negated = false;
if (!(scanner.Peek().kind == _IN))
{
RelExpr(out child);
result.Add(child);
while (StartOf(1))
{
if (la.kind == 17)
{
Get();
newOp = "<>";
}
else if (la.kind == 18)
{
Get();
newOp = "<>";
}
else if (la.kind == 19)
{
Get();
newOp = "=";
if (la.kind == 7)
{
Get();
negated = true;
}
}
else
{
Get();
newOp = "LIKE";
}
RelExpr(out child);
if (negated)
{
child.UnaryOp = "NOT";
}
result.Add(child, newOp);
}
}
else if (la.kind == 1)
{
Identifier(out child);
result.Add(child);
Expect(15);
Expect(20);
if (la.kind == 2 || la.kind == 3)
{
NumList(out child);
child.HasBrackets = true; result.Add(child, "IN");
}
else if (la.kind == 4)
{
StringList(out child);
child.HasBrackets = true; result.Add(child, "IN");
}
else
{
SynErr(40);
}
Expect(21);
}
else
{
SynErr(41);
}
expression = result.Simplify();
}