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|
/**
* Provides an implicit conversion table for basic types.
*
* Used to determine integer promotions and common types.
*
* Specification: $(LINK2 https://dlang.org/spec/type.html#integer-promotions, Integer Promotions),
* $(LINK2 https://dlang.org/spec/type.html#usual-arithmetic-conversions, Usual Arithmetic Conversions).
*
* Copyright: Copyright (C) 1999-2024 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 https://www.digitalmars.com, Walter Bright)
* License: $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/impcnvtab.d, _impcnvtab.d)
* Documentation: https://dlang.org/phobos/dmd_impcnvtab.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/impcnvtab.d
*/
module dmd.impcnvtab;
import dmd.astenums;
import dmd.mtype;
pure @nogc nothrow @safe:
/*************************************************
* If ty1 and ty2 are basic types, return the TY that both can
* be implicitly converted to.
* Params:
* ty1 = first operand type
* ty2 = second operand type
* Returns:
* ty = common type, else Terror
*/
TY implicitConvCommonTy(TY ty1, TY ty2)
{
return impCnvTab.impcnvResultTab[ty1][ty2];
}
/*************************************************
* If ty1 and ty2 are basic types, return the TY that ty1 can
* be implicitly converted to to bring them to a common ty.
* It's symmetric, i.e. the operands can be swapped.
* Params:
* ty1 = first operand type
* ty2 = second operand type
* Returns:
* ty = what ty1 should be converted to, else Terror
*/
TY implicitConvTy1(TY ty1, TY ty2)
{
return impCnvTab.impcnvType1Tab[ty1][ty2];
}
/******************************************************************************/
private:
struct ImpCnvTab
{
TY[TMAX][TMAX] impcnvResultTab;
TY[TMAX][TMAX] impcnvType1Tab;
}
enum ImpCnvTab impCnvTab = generateImpCnvTab();
ImpCnvTab generateImpCnvTab()
{
TY[TMAX] typeTYs =
[
Tarray,
Tsarray,
Taarray,
Tpointer,
Treference,
Tfunction,
Tident,
Tclass,
Tstruct,
Tenum,
Tdelegate,
Tnone,
Tvoid,
Tint8,
Tuns8,
Tint16,
Tuns16,
Tint32,
Tuns32,
Tint64,
Tuns64,
Tfloat32,
Tfloat64,
Tfloat80,
Timaginary32,
Timaginary64,
Timaginary80,
Tcomplex32,
Tcomplex64,
Tcomplex80,
Tbool,
Tchar,
Twchar,
Tdchar,
Terror,
Tinstance,
Ttypeof,
Ttuple,
Tslice,
Treturn,
Tnull,
Tvector,
Tint128,
Tuns128,
Ttraits,
Tmixin,
Tnoreturn,
Ttag,
];
ImpCnvTab impCnvTab;
// Set conversion tables
foreach (i; 0 .. cast(size_t)TMAX)
{
foreach (j; 0 .. cast(size_t)TMAX)
{
impCnvTab.impcnvResultTab[i][j] = Terror;
impCnvTab.impcnvType1Tab[i][j] = Terror;
}
}
void X(TY t1, TY t2, TY nt1, TY nt2, TY rt)
{
impCnvTab.impcnvResultTab[t1][t2] = rt;
impCnvTab.impcnvResultTab[t2][t1] = rt;
impCnvTab.impcnvType1Tab[t1][t2] = nt1;
impCnvTab.impcnvType1Tab[t2][t1] = nt2;
}
/* ======================= */
X(Tbool,Tbool, Tbool,Tbool, Tbool);
X(Tbool,Tint8, Tint32,Tint32, Tint32);
X(Tbool,Tuns8, Tint32,Tint32, Tint32);
X(Tbool,Tint16, Tint32,Tint32, Tint32);
X(Tbool,Tuns16, Tint32,Tint32, Tint32);
X(Tbool,Tint32, Tint32,Tint32, Tint32);
X(Tbool,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tbool,Tint64, Tint64,Tint64, Tint64);
X(Tbool,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tbool,Tint128, Tint128,Tint128, Tint128);
X(Tbool,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tbool,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tbool,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tbool,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tbool,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tbool,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tbool,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tbool,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tbool,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tbool,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tint8,Tint8, Tint32,Tint32, Tint32);
X(Tint8,Tuns8, Tint32,Tint32, Tint32);
X(Tint8,Tint16, Tint32,Tint32, Tint32);
X(Tint8,Tuns16, Tint32,Tint32, Tint32);
X(Tint8,Tint32, Tint32,Tint32, Tint32);
X(Tint8,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tint8,Tint64, Tint64,Tint64, Tint64);
X(Tint8,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tint8,Tint128, Tint128,Tint128, Tint128);
X(Tint8,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tint8,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tint8,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tint8,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tint8,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tint8,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tint8,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tint8,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tint8,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tint8,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tuns8,Tuns8, Tint32,Tint32, Tint32);
X(Tuns8,Tint16, Tint32,Tint32, Tint32);
X(Tuns8,Tuns16, Tint32,Tint32, Tint32);
X(Tuns8,Tint32, Tint32,Tint32, Tint32);
X(Tuns8,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tuns8,Tint64, Tint64,Tint64, Tint64);
X(Tuns8,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tuns8,Tint128, Tint128,Tint128, Tint128);
X(Tuns8,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tuns8,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tuns8,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tuns8,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tuns8,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tuns8,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tuns8,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tuns8,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tuns8,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tuns8,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tint16,Tint16, Tint32,Tint32, Tint32);
X(Tint16,Tuns16, Tint32,Tint32, Tint32);
X(Tint16,Tint32, Tint32,Tint32, Tint32);
X(Tint16,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tint16,Tint64, Tint64,Tint64, Tint64);
X(Tint16,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tint16,Tint128, Tint128,Tint128, Tint128);
X(Tint16,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tint16,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tint16,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tint16,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tint16,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tint16,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tint16,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tint16,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tint16,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tint16,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tuns16,Tuns16, Tint32,Tint32, Tint32);
X(Tuns16,Tint32, Tint32,Tint32, Tint32);
X(Tuns16,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tuns16,Tint64, Tint64,Tint64, Tint64);
X(Tuns16,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tuns16,Tint128, Tint128,Tint128, Tint128);
X(Tuns16,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tuns16,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tuns16,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tuns16,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tuns16,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tuns16,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tuns16,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tuns16,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tuns16,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tuns16,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tint32,Tint32, Tint32,Tint32, Tint32);
X(Tint32,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tint32,Tint64, Tint64,Tint64, Tint64);
X(Tint32,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tint32,Tint128, Tint128,Tint128, Tint128);
X(Tint32,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tint32,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tint32,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tint32,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tint32,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tint32,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tint32,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tint32,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tint32,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tint32,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tuns32,Tuns32, Tuns32,Tuns32, Tuns32);
X(Tuns32,Tint64, Tint64,Tint64, Tint64);
X(Tuns32,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tuns32,Tint128, Tint128,Tint128, Tint128);
X(Tuns32,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tuns32,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tuns32,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tuns32,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tuns32,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tuns32,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tuns32,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tuns32,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tuns32,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tuns32,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tint64,Tint64, Tint64,Tint64, Tint64);
X(Tint64,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tint64,Tint128, Tint128,Tint128, Tint128);
X(Tint64,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tint64,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tint64,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tint64,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tint64,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tint64,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tint64,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tint64,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tint64,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tint64,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tuns64,Tuns64, Tuns64,Tuns64, Tuns64);
X(Tuns64,Tint128, Tint128,Tint128, Tint128);
X(Tuns64,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tuns64,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tuns64,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tuns64,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tuns64,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tuns64,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tuns64,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tuns64,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tuns64,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tuns64,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tint128,Tint128, Tint128,Tint128, Tint128);
X(Tint128,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tint128,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tint128,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tint128,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tint128,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tint128,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tint128,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tint128,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tint128,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tint128,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tuns128,Tuns128, Tuns128,Tuns128, Tuns128);
X(Tuns128,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tuns128,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tuns128,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tuns128,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tuns128,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tuns128,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tuns128,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tuns128,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tuns128,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tfloat32,Tfloat32, Tfloat32,Tfloat32, Tfloat32);
X(Tfloat32,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tfloat32,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tfloat32,Timaginary32, Tfloat32,Timaginary32, Tfloat32);
X(Tfloat32,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tfloat32,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tfloat32,Tcomplex32, Tfloat32,Tcomplex32, Tcomplex32);
X(Tfloat32,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tfloat32,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tfloat64,Tfloat64, Tfloat64,Tfloat64, Tfloat64);
X(Tfloat64,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tfloat64,Timaginary32, Tfloat64,Timaginary64, Tfloat64);
X(Tfloat64,Timaginary64, Tfloat64,Timaginary64, Tfloat64);
X(Tfloat64,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tfloat64,Tcomplex32, Tfloat64,Tcomplex64, Tcomplex64);
X(Tfloat64,Tcomplex64, Tfloat64,Tcomplex64, Tcomplex64);
X(Tfloat64,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tfloat80,Tfloat80, Tfloat80,Tfloat80, Tfloat80);
X(Tfloat80,Timaginary32, Tfloat80,Timaginary80, Tfloat80);
X(Tfloat80,Timaginary64, Tfloat80,Timaginary80, Tfloat80);
X(Tfloat80,Timaginary80, Tfloat80,Timaginary80, Tfloat80);
X(Tfloat80,Tcomplex32, Tfloat80,Tcomplex80, Tcomplex80);
X(Tfloat80,Tcomplex64, Tfloat80,Tcomplex80, Tcomplex80);
X(Tfloat80,Tcomplex80, Tfloat80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Timaginary32,Timaginary32, Timaginary32,Timaginary32, Timaginary32);
X(Timaginary32,Timaginary64, Timaginary64,Timaginary64, Timaginary64);
X(Timaginary32,Timaginary80, Timaginary80,Timaginary80, Timaginary80);
X(Timaginary32,Tcomplex32, Timaginary32,Tcomplex32, Tcomplex32);
X(Timaginary32,Tcomplex64, Timaginary64,Tcomplex64, Tcomplex64);
X(Timaginary32,Tcomplex80, Timaginary80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Timaginary64,Timaginary64, Timaginary64,Timaginary64, Timaginary64);
X(Timaginary64,Timaginary80, Timaginary80,Timaginary80, Timaginary80);
X(Timaginary64,Tcomplex32, Timaginary64,Tcomplex64, Tcomplex64);
X(Timaginary64,Tcomplex64, Timaginary64,Tcomplex64, Tcomplex64);
X(Timaginary64,Tcomplex80, Timaginary80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Timaginary80,Timaginary80, Timaginary80,Timaginary80, Timaginary80);
X(Timaginary80,Tcomplex32, Timaginary80,Tcomplex80, Tcomplex80);
X(Timaginary80,Tcomplex64, Timaginary80,Tcomplex80, Tcomplex80);
X(Timaginary80,Tcomplex80, Timaginary80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tcomplex32,Tcomplex32, Tcomplex32,Tcomplex32, Tcomplex32);
X(Tcomplex32,Tcomplex64, Tcomplex64,Tcomplex64, Tcomplex64);
X(Tcomplex32,Tcomplex80, Tcomplex80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tcomplex64,Tcomplex64, Tcomplex64,Tcomplex64, Tcomplex64);
X(Tcomplex64,Tcomplex80, Tcomplex80,Tcomplex80, Tcomplex80);
/* ======================= */
X(Tcomplex80,Tcomplex80, Tcomplex80,Tcomplex80, Tcomplex80);
// "No type is implicitly convertible to noreturn, but noreturn is implicitly convertible to every other type"
foreach(convertToTy; typeTYs)
X(Tnoreturn, convertToTy, convertToTy, convertToTy, convertToTy);
return impCnvTab;
}
|
