Mercurial > projects > ddmd
view dmd/InExp.d @ 187:b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
author | Abscissa |
---|---|
date | Tue, 07 Jun 2011 23:37:34 -0400 |
parents | e3afd1303184 |
children | 52188e7e3fb5 |
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module dmd.InExp; import dmd.common; import dmd.Expression; import dmd.Identifier; import dmd.Loc; import dmd.Scope; import dmd.IRState; import dmd.BinExp; import dmd.TOK; import dmd.Type; import dmd.Id; import dmd.TY; import dmd.TypeAArray; import dmd.expression.util.arrayTypeCompatible; import dmd.backend.elem; import dmd.backend.TYM; import dmd.backend.mTY; import dmd.backend.OPER; import dmd.backend.Symbol; import dmd.backend.Util; import dmd.DDMDExtensions; class InExp : BinExp { mixin insertMemberExtension!(typeof(this)); this(Loc loc, Expression e1, Expression e2) { register(); super(loc, TOKin, InExp.sizeof, e1, e2); } override Expression semantic(Scope sc) { if (type) return this; super.semanticp(sc); Expression e = op_overload(sc); if (e) return e; //type = Type.tboolean; Type t2b = e2.type.toBasetype(); if (t2b.ty != TY.Taarray) { error("rvalue of in expression must be an associative array, not %s", e2.type.toChars()); type = Type.terror; } else { TypeAArray ta = cast(TypeAArray)t2b; // Special handling for array keys if (!arrayTypeCompatible(e1.loc, e1.type, ta.index)) { // Convert key to type of key e1 = e1.implicitCastTo(sc, ta.index); } // Return type is pointer to value type = ta.nextOf().pointerTo(); } return this; } override int isBit() { return 0; } override Identifier opId() { return Id.opIn; } override Identifier opId_r() { return Id.opIn_r; } override elem* toElem(IRState* irs) { elem* e; elem* key = e1.toElem(irs); elem* aa = e2.toElem(irs); elem* ep; elem* keyti; TypeAArray taa = cast(TypeAArray)e2.type.toBasetype(); // set to: // aaIn(aa, keyti, key); if (tybasic(key.Ety) == TYstruct) { key = el_una(OPstrpar, TYstruct, key); key.Enumbytes = key.E1.Enumbytes; assert(key.Enumbytes); } else if (tybasic(key.Ety) == TYarray && taa.index.ty == Tsarray) { // e2.elem() turns string literals into a TYarray, so the // length is lost. Restore it. key = el_una(OPstrpar, TYstruct, key); assert(e1.type.size() == taa.index.size()); key.Enumbytes = cast(size_t) taa.index.size(); } Symbol* s = taa.aaGetSymbol("In", 0); keyti = taa.index.getInternalTypeInfo(null).toElem(irs); ep = el_params(key, keyti, aa, null); e = el_bin(OPcall, type.totym(), el_var(s), ep); el_setLoc(e,loc); return e; } }