C# Class ABT.TypeCast

Inheritance: Expr

Show file Open project: phisiart/C-Compiler Class Usage Examples

Public Properties

Property	Type	Description
Expr	Expr
Kind	TypeCastType

Public Methods

Method	Description
CGenAddress ( CGenState state ) : void
CGenValue ( CGenState state ) : System.Reg
EqualType ( ExprType t1, ExprType t2 ) : System.Boolean
FloatToArith ( Expr expr, ExprType type ) : Expr	From: float, double To: char, uchar, short, ushort, long, ulong, float, double According to MSDN "Conversions from Floating-Point Types", float cannot convert to unsigned char. I don't know why, but I follow it.
FromPointer ( Expr expr, ExprType type, Env env ) : Expr	From: pointer To: pointer, integral
IntegralPromotion ( Expr expr ) : ExprTypeKind>.Tuple	All integrals are converted to LongType or ULongType.
MakeCast ( Expr expr, ExprType type ) : Expr
MakeCast ( Expr expr, ExprType type, Env env ) : Expr
SignedIntegralToArith ( Expr expr, ExprType type ) : Expr	From: char, short, long To: char, uchar, short, ushort, long, ulong, float double
ToPointer ( Expr expr, ExprType type, Env env ) : Expr	From: pointer, integral To: pointer
TypeCast ( TypeCastType kind, Expr expr, ExprType type ) : System
UnsignedIntegralToArith ( Expr expr, ExprType type ) : Expr	From: uchar, ushort, ulong To: char, uchar, short, ushort, long, ulong, float, double Aaccording to MSDN "Conversions from Unsigned Integral Types", unsigned long converts directly to double. However, I just treat unsigned long as long.
UsualArithmeticConversion ( Expr e1, Expr e2 ) : Tuple	Perform the usual arithmetic conversion on two expressions. If either expression is DoubleType, then both are converted to DoubleType. Else, if either expression is FloatType, then both are converted to FloatType. Else, if either expression is ULongType, then both are converted to ULongType. Else, both are converted to LongType.
UsualScalarConversion ( Expr e1, Expr e2 ) : Tuple	First, convert pointers to ULongType's, then do UsualArithmeticConversion.

Private Methods

Method	Description
TypeCast ( TypeCastType kind, Expr expr, ExprType type, Env env ) : System

Method Details

CGenAddress() public method

public CGenAddress ( CGenState state ) : void
state	CodeGeneration.CGenState
return	void

CGenValue() public method

public CGenValue ( CGenState state ) : System.Reg
state	CodeGeneration.CGenState
return	System.Reg

EqualType() public static method

public static EqualType ( ExprType t1, ExprType t2 ) : System.Boolean
t1	ExprType
t2	ExprType
return	System.Boolean

FloatToArith() public static method

From: float, double To: char, uchar, short, ushort, long, ulong, float, double

According to MSDN "Conversions from Floating-Point Types", float cannot convert to unsigned char. I don't know why, but I follow it.

public static FloatToArith ( Expr expr, ExprType type ) : Expr
expr	Expr
type	ExprType
return	Expr

FromPointer() public static method

From: pointer To: pointer, integral

public static FromPointer ( Expr expr, ExprType type, Env env ) : Expr
expr	Expr
type	ExprType
env	Env
return	Expr

IntegralPromotion() public static method

All integrals are converted to LongType or ULongType.

public static IntegralPromotion ( Expr expr ) : ExprTypeKind>.Tuple
expr	Expr	/// The integral expression to be casted. ///
return	ExprTypeKind>.Tuple

MakeCast() public static method

public static MakeCast ( Expr expr, ExprType type ) : Expr
expr	Expr
type	ExprType
return	Expr

MakeCast() public static method

public static MakeCast ( Expr expr, ExprType type, Env env ) : Expr
expr	Expr
type	ExprType
env	Env
return	Expr

SignedIntegralToArith() public static method

From: char, short, long To: char, uchar, short, ushort, long, ulong, float double

public static SignedIntegralToArith ( Expr expr, ExprType type ) : Expr
expr	Expr
type	ExprType
return	Expr

ToPointer() public static method

From: pointer, integral To: pointer

public static ToPointer ( Expr expr, ExprType type, Env env ) : Expr
expr	Expr
type	ExprType
env	Env
return	Expr

TypeCast() public method

public TypeCast ( TypeCastType kind, Expr expr, ExprType type ) : System
kind	TypeCastType
expr	Expr
type	ExprType
return	System

UnsignedIntegralToArith() public static method

From: uchar, ushort, ulong To: char, uchar, short, ushort, long, ulong, float, double

Aaccording to MSDN "Conversions from Unsigned Integral Types", unsigned long converts directly to double. However, I just treat unsigned long as long.

public static UnsignedIntegralToArith ( Expr expr, ExprType type ) : Expr
expr	Expr
type	ExprType
return	Expr

UsualArithmeticConversion() public static method

Perform the usual arithmetic conversion on two expressions.

If either expression is DoubleType, then both are converted to DoubleType.

Else, if either expression is FloatType, then both are converted to FloatType.

Else, if either expression is ULongType, then both are converted to ULongType.

Else, both are converted to LongType.

public static UsualArithmeticConversion ( Expr e1, Expr e2 ) : Tuple
e1	Expr	The first expression to be casted. Must have .
e2	Expr	The second expression to be casted. Must have .
return	Tuple

UsualScalarConversion() public static method

First, convert pointers to ULongType's, then do UsualArithmeticConversion.

public static UsualScalarConversion ( Expr e1, Expr e2 ) : Tuple
e1	Expr	/// The first expression to be casted. ///
e2	Expr	/// The second expression to be casted. ///
return	Tuple

Property Details

Expr public property

public Expr,ABT Expr
return	Expr

Kind public property

public TypeCastType Kind
return	TypeCastType