Mercurial > projects > ddmd
view dmd/StaticIfCondition.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 |
line wrap: on
line source
module dmd.StaticIfCondition; import dmd.common; import dmd.Expression; import dmd.ScopeDsymbol; import dmd.OutBuffer; import dmd.Loc; import dmd.Scope; import dmd.Condition; import dmd.HdrGenState; import dmd.WANT; import dmd.Util; import dmd.DDMDExtensions; class StaticIfCondition : Condition { mixin insertMemberExtension!(typeof(this)); Expression exp; this(Loc loc, Expression exp) { register(); super(loc); this.exp = exp; } override Condition syntaxCopy() { return new StaticIfCondition(loc, exp.syntaxCopy()); } override bool include(Scope sc, ScopeDsymbol s) { static if (false) { printf("StaticIfCondition.include(sc = %p, s = %p)\n", sc, s); if (s) { printf("\ts = '%s', kind = %s\n", s.toChars(), s.kind()); } } if (inc == 0) { if (!sc) { error(loc, "static if conditional cannot be at global scope"); inc = 2; return 0; } sc = sc.push(sc.scopesym); sc.sd = s; // s gets any addMember() sc.flags |= SCOPE.SCOPEstaticif; Expression e = exp.semantic(sc); sc.pop(); e = e.optimize(WANTvalue | WANTinterpret); if (e.isBool(true)) inc = 1; else if (e.isBool(false)) inc = 2; else { e.error("expression %s is not constant or does not evaluate to a bool", e.toChars()); inc = 2; } } return (inc == 1); } override void toCBuffer(OutBuffer buf, HdrGenState* hgs) { assert(false); } }