dmd.opover

Handles operator overloading.

Specification: Operator Overloading

Authors

Walter Bright

License

Boost License 1.0

Source: opover.d

Documentation: https://dlang.org/phobos/dmd_opover.html

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

  • isCommutative

    Declaration

    bool isCommutative(TOK op);

    Determine if operands of binary op can be reversed to fit operator overload.

  • opToArg

    Declaration

    Objects* opToArg(Scope* sc, TOK op);

    Helper function to turn operator into template argument list

  • op_overload

    Declaration

    Expression op_overload(Expression e, Scope* sc, TOK* pop = null);

    Operator overload. Check for operator overload, if so, replace with function call.

    Parameters

    Expression e

    expression with operator

    Scope* sc

    context

    TOK* pop

    if not null, is set to the operator that was actually overloaded, which may not be e.op. Happens when operands are reversed to match an overload

    Return Value

    null if not an operator overload, otherwise the lowered expression

  • build_overload

    Declaration

    Expression build_overload(const ref Loc loc, Scope* sc, Expression ethis, Expression earg, Dsymbol d);

    Utility to build a function call out of this reference and argument.

  • search_function

    Declaration

    Dsymbol search_function(ScopeDsymbol ad, Identifier funcid);

    Search for function funcid in aggregate ad.

  • inferForeachAggregate

    Declaration

    bool inferForeachAggregate(Scope* sc, bool isForeach, ref Expression feaggr, out Dsymbol sapply);

    Figure out what is being foreach'd over by looking at the ForeachAggregate.

    Parameters

    Scope* sc

    context

    bool isForeach

    true for foreach, false for foreach_reverse

    Expression feaggr

    ForeachAggregate

    Dsymbol sapply

    set to function opApply/opApplyReverse, or delegate, or null. Overload resolution is not done.

    Return Value

    true if successfully figured it out; feaggr updated with semantic analysis. false for failed, which is an error.

  • inferApplyArgTypes

    Declaration

    bool inferApplyArgTypes(ForeachStatement fes, Scope* sc, ref Dsymbol sapply);

    Given array of foreach parameters and an aggregate type, find best opApply overload, if any of the parameter types are missing, attempt to infer them from the aggregate type.

    Parameters

    ForeachStatement fes

    the foreach statement

    Scope* sc

    context

    Dsymbol sapply

    null or opApply or delegate

    Return Value

    false for errors