Mercurial > projects > ldc
view dmd2/cond.c @ 1351:8d501abecd24
Initial (but disabled) fix for ticket #294 , the actual part that fixes the bug is in a #if 0 block as I'm afraid it will cause regressions. I'm most likely not going to be around tonight, and maybe not tomorrow as well, so I'm pushing it in case someone wants to run some serious testing/investigate the problem noted in llvmhelpers.cpp : realignOffset .
author | Tomas Lindquist Olsen <tomas.l.olsen gmail com> |
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date | Thu, 14 May 2009 17:20:17 +0200 |
parents | f04dde6e882c |
children | 638d16625da2 |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2008 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com // License for redistribution is by either the Artistic License // in artistic.txt, or the GNU General Public License in gnu.txt. // See the included readme.txt for details. #include <stdio.h> #include <assert.h> #include "id.h" #include "init.h" #include "declaration.h" #include "identifier.h" #include "expression.h" #include "cond.h" #include "module.h" #include "template.h" #include "lexer.h" #ifdef _DH #include "mtype.h" #include "scope.h" #endif int findCondition(Array *ids, Identifier *ident) { if (ids) { for (int i = 0; i < ids->dim; i++) { const char *id = (const char *)ids->data[i]; if (strcmp(id, ident->toChars()) == 0) return TRUE; } } return FALSE; } /* ============================================================ */ Condition::Condition(Loc loc) { this->loc = loc; inc = 0; } /* ============================================================ */ DVCondition::DVCondition(Module *mod, unsigned level, Identifier *ident) : Condition(0) { this->mod = mod; this->level = level; this->ident = ident; } Condition *DVCondition::syntaxCopy() { return this; // don't need to copy } /* ============================================================ */ void DebugCondition::setGlobalLevel(unsigned level) { global.params.debuglevel = level; } void DebugCondition::addGlobalIdent(const char *ident) { if (!global.params.debugids) global.params.debugids = new Array(); global.params.debugids->push((void *)ident); } DebugCondition::DebugCondition(Module *mod, unsigned level, Identifier *ident) : DVCondition(mod, level, ident) { } int DebugCondition::include(Scope *sc, ScopeDsymbol *s) { //printf("DebugCondition::include() level = %d, debuglevel = %d\n", level, global.params.debuglevel); if (inc == 0) { inc = 2; if (ident) { if (findCondition(mod->debugids, ident)) inc = 1; else if (findCondition(global.params.debugids, ident)) inc = 1; else { if (!mod->debugidsNot) mod->debugidsNot = new Array(); mod->debugidsNot->push(ident->toChars()); } } else if (level <= global.params.debuglevel || level <= mod->debuglevel) inc = 1; } return (inc == 1); } void DebugCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { if (ident) buf->printf("debug (%s)", ident->toChars()); else buf->printf("debug (%u)", level); } /* ============================================================ */ void VersionCondition::setGlobalLevel(unsigned level) { global.params.versionlevel = level; } void VersionCondition::checkPredefined(Loc loc, const char *ident) { static const char* reserved[] = { "DigitalMars", "LLVM", "LDC", "LLVM64", "X86", "X86_64", "PPC", "PPC64", "Windows", "Win32", "Win64", "linux", "darwin", "Posix", "LittleEndian", "BigEndian", "all", "none", }; for (unsigned i = 0; i < sizeof(reserved) / sizeof(reserved[0]); i++) { if (strcmp(ident, reserved[i]) == 0) goto Lerror; } if (ident[0] == 'D' && ident[1] == '_') goto Lerror; return; Lerror: error(loc, "version identifier '%s' is reserved and cannot be set", ident); } void VersionCondition::addGlobalIdent(const char *ident) { checkPredefined(0, ident); addPredefinedGlobalIdent(ident); } void VersionCondition::addPredefinedGlobalIdent(const char *ident) { if (!global.params.versionids) global.params.versionids = new Array(); global.params.versionids->push((void *)ident); } VersionCondition::VersionCondition(Module *mod, unsigned level, Identifier *ident) : DVCondition(mod, level, ident) { } int VersionCondition::include(Scope *sc, ScopeDsymbol *s) { //printf("VersionCondition::include() level = %d, versionlevel = %d\n", level, global.params.versionlevel); //if (ident) printf("\tident = '%s'\n", ident->toChars()); if (inc == 0) { inc = 2; if (ident) { if (findCondition(mod->versionids, ident)) inc = 1; else if (findCondition(global.params.versionids, ident)) inc = 1; else { if (!mod->versionidsNot) mod->versionidsNot = new Array(); mod->versionidsNot->push(ident->toChars()); } } else if (level <= global.params.versionlevel || level <= mod->versionlevel) inc = 1; } return (inc == 1); } void VersionCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { if (ident) buf->printf("version (%s)", ident->toChars()); else buf->printf("version (%u)", level); } /**************************** StaticIfCondition *******************************/ StaticIfCondition::StaticIfCondition(Loc loc, Expression *exp) : Condition(loc) { this->exp = exp; } Condition *StaticIfCondition::syntaxCopy() { return new StaticIfCondition(loc, exp->syntaxCopy()); } int StaticIfCondition::include(Scope *sc, ScopeDsymbol *s) { #if 0 printf("StaticIfCondition::include(sc = %p, s = %p)\n", sc, s); if (s) { printf("\ts = '%s', kind = %s\n", s->toChars(), s->kind()); } #endif 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 |= 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); } void StaticIfCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { buf->writestring("static if("); exp->toCBuffer(buf, hgs); buf->writeByte(')'); } /**************************** IftypeCondition *******************************/ IftypeCondition::IftypeCondition(Loc loc, Type *targ, Identifier *id, enum TOK tok, Type *tspec) : Condition(loc) { this->targ = targ; this->id = id; this->tok = tok; this->tspec = tspec; } Condition *IftypeCondition::syntaxCopy() { return new IftypeCondition(loc, targ->syntaxCopy(), id, tok, tspec ? tspec->syntaxCopy() : NULL); } int IftypeCondition::include(Scope *sc, ScopeDsymbol *sd) { //printf("IftypeCondition::include()\n"); if (inc == 0) { if (!sc) { error(loc, "iftype conditional cannot be at global scope"); inc = 2; return 0; } unsigned errors = global.errors; global.gag++; // suppress printing of error messages targ = targ->semantic(loc, sc); global.gag--; if (errors != global.errors) // if any errors happened { inc = 2; // then condition is false global.errors = errors; } else if (id && tspec) { /* Evaluate to TRUE if targ matches tspec. * If TRUE, declare id as an alias for the specialized type. */ MATCH m; TemplateTypeParameter tp(loc, id, NULL, NULL); TemplateParameters parameters; parameters.setDim(1); parameters.data[0] = (void *)&tp; Objects dedtypes; dedtypes.setDim(1); m = targ->deduceType(NULL, tspec, ¶meters, &dedtypes); if (m == MATCHnomatch || (m != MATCHexact && tok == TOKequal)) inc = 2; else { inc = 1; Type *tded = (Type *)dedtypes.data[0]; if (!tded) tded = targ; Dsymbol *s = new AliasDeclaration(loc, id, tded); s->semantic(sc); sc->insert(s); if (sd) s->addMember(sc, sd, 1); } } else if (id) { /* Declare id as an alias for type targ. Evaluate to TRUE */ Dsymbol *s = new AliasDeclaration(loc, id, targ); s->semantic(sc); sc->insert(s); if (sd) s->addMember(sc, sd, 1); inc = 1; } else if (tspec) { /* Evaluate to TRUE if targ matches tspec */ tspec = tspec->semantic(loc, sc); //printf("targ = %s\n", targ->toChars()); //printf("tspec = %s\n", tspec->toChars()); if (tok == TOKcolon) { if (targ->implicitConvTo(tspec)) inc = 1; else inc = 2; } else /* == */ { if (targ->equals(tspec)) inc = 1; else inc = 2; } } else inc = 1; //printf("inc = %d\n", inc); } return (inc == 1); } void IftypeCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { buf->writestring("iftype("); targ->toCBuffer(buf, id, hgs); if (tspec) { if (tok == TOKcolon) buf->writestring(" : "); else buf->writestring(" == "); tspec->toCBuffer(buf, NULL, hgs); } buf->writeByte(')'); }