dmd.dcast

Compiler implementation of the D programming language.

Authors:

Walter Bright

License:

Boost License 1.0

Source

dcast.d

Documentation

https://dlang.org/phobos/dmd_dcast.html

Coverage

https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dcast.d

Expression implicitCastTo(Expression e, Scope* sc, Type t);

Do an implicit cast. Issue error if it can't be done.

MATCH implicitConvTo(Expression e, Type t);

Return MATCH level of implicitly converting e to type t. Don't do the actual cast; don't change e.

Expression castTo(Expression e, Scope* sc, Type t);

Do an explicit cast. Assume that the 'this' expression does not have any indirections.

Expression inferType(Expression e, Type t, int flag = 0);

Set type inference target t Target type flag 1: don't put an error when inference fails

Expression scaleFactor(BinExp be, Scope* sc);

Scale addition/subtraction to/from pointer.

bool typeMerge(Scope* sc, TOK op, Type* pt, Expression* pe1, Expression* pe2);

Combine types.

Output

*pt merged type, if *pt is not NULL *pe1 rewritten e1 *pe2 rewritten e2

Returns:

true success false failed

Expression typeCombine(BinExp be, Scope* sc);

Bring leaves to common type.

Returns:

null on success, ErrorExp if error occurs

Expression integralPromotions(Expression e, Scope* sc);

Do integral promotions (convertchk). Don't convert to

Expression charPromotions(Expression e, Scope* sc);

Do char promotions. char -> dchar wchar -> dchar dchar -> dchar

void fix16997(Scope* sc, UnaExp ue);

This provides a transition from the non-promoting behavior of unary + - ~ to the C-like integral promotion behavior.

Parameters:

Scope* sc	context
UnaExp ue	NegExp, UAddExp, or ComExp which is revised per rules

References

https://issues.dlang.org/show_bug.cgi?id=16997

bool arrayTypeCompatible(Loc loc, Type t1, Type t2);

See if both types are arrays that can be compared for equality. Return true if so. If they are arrays, but incompatible, issue error. This is to enable comparing things like an immutable array with a mutable one.

bool arrayTypeCompatibleWithoutCasting(Type t1, Type t2);

See if both types are arrays that can be compared for equality without any casting. Return true if so. This is to enable comparing things like an immutable array with a mutable one.

IntRange getIntRange(Expression e);