Mercurial > projects > ddmd
view dmd/VersionSymbol.d @ 187:b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
author | Abscissa |
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date | Tue, 07 Jun 2011 23:37:34 -0400 |
parents | e3afd1303184 |
children |
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module dmd.VersionSymbol; import dmd.common; import dmd.Dsymbol; import dmd.Loc; import dmd.Identifier; import dmd.Module; import dmd.Array; import dmd.VersionCondition; import dmd.Scope; import dmd.ScopeDsymbol; import dmd.HdrGenState; import dmd.String; import dmd.OutBuffer; import dmd.DDMDExtensions; /* VersionSymbol's happen for statements like: * version = identifier; * version = integer; */ class VersionSymbol : Dsymbol { mixin insertMemberExtension!(typeof(this)); uint level; this(Loc loc, Identifier ident) { register(); super(ident); this.loc = loc; } this(Loc loc, uint level) { register(); super(); this.level = level; this.loc = loc; } override Dsymbol syntaxCopy(Dsymbol s) { assert(!s); VersionSymbol ds = new VersionSymbol(loc, ident); ds.level = level; return ds; } override bool addMember(Scope sc, ScopeDsymbol s, bool memnum) { //printf("VersionSymbol::addMember('%s') %s\n", sd->toChars(), toChars()); // Do not add the member to the symbol table, // just make sure subsequent debug declarations work. Module m = s.isModule(); if (ident) { VersionCondition.checkPredefined(loc, ident.toChars()); if (!m) error("declaration must be at module level"); else { if (findCondition(m.versionidsNot, ident)) error("defined after use"); m.versionids.push(ident.toChars()); } } else { if (!m) error("level declaration must be at module level"); else m.versionlevel = level; } return false; } override void semantic(Scope sc) { } override void toCBuffer(OutBuffer buf, HdrGenState* hgs) { buf.writestring("version = "); if (ident) buf.writestring(ident.toChars()); else buf.printf("%u", level); buf.writestring(";"); buf.writenl(); } override string kind() { return "version"; } }