// Equality
ExprNode ParseEquality()
{
var LHS = ParseRelational();
while (true)
{
var pos = _tokenizer.TokenPosition;
if (_tokenizer.TrySkipToken(Token.EQ))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseRelational(),
OpName = "==",
Operator = ExprNodeBinary.OpEQ,
};
}
else if (_tokenizer.TrySkipToken(Token.NE))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseRelational(),
OpName = "!=",
Operator = ExprNodeBinary.OpNE,
};
}
else
{
return(LHS);
}
}
}
// Shift
ExprNode ParseShift()
{
var LHS = ParseAdd();
while (true)
{
var pos = _tokenizer.TokenPosition;
if (_tokenizer.TrySkipToken(Token.Shl))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseAdd(),
OpName = "<<",
Operator = ExprNodeBinary.OpShl,
};
}
else if (_tokenizer.TrySkipToken(Token.Shr))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseAdd(),
OpName = ">>",
Operator = ExprNodeBinary.OpShr,
};
}
else
{
return(LHS);
}
}
}
// Relational
ExprNode ParseRelational()
{
var LHS = ParseDup();
while (true)
{
var pos = _tokenizer.TokenPosition;
if (_tokenizer.TrySkipToken(Token.LE))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseDup(),
OpName = "<=",
Operator = ExprNodeBinary.OpLE,
};
}
else if (_tokenizer.TrySkipToken(Token.GE))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseDup(),
OpName = ">=",
Operator = ExprNodeBinary.OpGE,
};
}
else if (_tokenizer.TrySkipToken(Token.GT))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseDup(),
OpName = ">",
Operator = ExprNodeBinary.OpGT,
};
}
else if (_tokenizer.TrySkipToken(Token.LT))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseDup(),
OpName = "<",
Operator = ExprNodeBinary.OpLT,
};
}
else
{
return(LHS);
}
}
}
ExprNode ParseMultiply()
{
var LHS = ParseUnary();
while (true)
{
var pos = _tokenizer.TokenPosition;
if (_tokenizer.TrySkipToken(Token.Multiply))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseUnary(),
OpName = "*",
Operator = ExprNodeBinary.OpMul,
};
}
else if (_tokenizer.TrySkipToken(Token.Divide))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseUnary(),
OpName = "/",
Operator = ExprNodeBinary.OpDiv,
};
}
else if (_tokenizer.TrySkipToken(Token.Modulus))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseUnary(),
OpName = "%",
Operator = ExprNodeBinary.OpMod,
};
}
else
{
return(LHS);
}
}
}
// Logical OR
ExprNode ParseLogicalOr()
{
var LHS = ParseLogicalAnd();
while (true)
{
var pos = _tokenizer.TokenPosition;
if (_tokenizer.TrySkipToken(Token.LogicalOr))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseLogicalAnd(),
OpName = "||",
Operator = ExprNodeBinary.OpLogicalOr,
};
}
else
{
return(LHS);
}
}
}
// Bitwise XOR
ExprNode ParseBitwiseXor()
{
var LHS = ParseBitwiseAnd();
while (true)
{
var pos = _tokenizer.TokenPosition;
if (_tokenizer.TrySkipToken(Token.BitwiseXor))
{
LHS = new ExprNodeBinary(pos)
{
LHS = LHS,
RHS = ParseBitwiseAnd(),
OpName = "^",
Operator = ExprNodeBinary.OpBitwiseXor,
};
}
else
{
return(LHS);
}
}
}
