Mercurial > projects > ldc
view dmd/cond.c @ 1508:e1e93343fc11
Move function codegen data from IrFunction to new FuncGen.
This change reduces memory consumption significantly by releasing the
memory held by the STL containers that are now inside FuncGen.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Sat, 20 Jun 2009 19:11:44 +0200 |
parents | 5855958073a9 |
children | 44b145be2ef5 |
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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", "X86", "X86_64", "Windows", "Win32", "Win64", "linux", #if DMDV2 /* Although Posix is predefined by D1, disallowing its * redefinition breaks makefiles and older builds. */ "Posix", #endif "OSX", "FreeBSD", "Solaris", "LittleEndian", "BigEndian", "all", "none", // LDC "LLVM", "LDC", "LLVM64", "PPC", "PPC64", "darwin","solaris","freebsd" }; 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(')'); }