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1309 lines
32 KiB
C
1309 lines
32 KiB
C
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// Compiler implementation of the D programming language
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// Copyright (c) 1999-2007 by Digital Mars
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// All Rights Reserved
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// written by Walter Bright
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// http://www.digitalmars.com
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// License for redistribution is by either the Artistic License
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// in artistic.txt, or the GNU General Public License in gnu.txt.
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// See the included readme.txt for details.
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#include <stdio.h>
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#include <assert.h>
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#include "init.h"
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#include "declaration.h"
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#include "attrib.h"
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#include "mtype.h"
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#include "template.h"
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#include "scope.h"
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#include "aggregate.h"
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#include "module.h"
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#include "id.h"
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#include "expression.h"
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#include "hdrgen.h"
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/********************************* Declaration ****************************/
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Declaration::Declaration(Identifier *id)
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: Dsymbol(id)
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{
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type = NULL;
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originalType = NULL;
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storage_class = STCundefined;
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protection = PROTundefined;
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linkage = LINKdefault;
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}
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void Declaration::semantic(Scope *sc)
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{
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}
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char *Declaration::kind()
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{
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return "declaration";
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}
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unsigned Declaration::size(Loc loc)
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{
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assert(type);
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return type->size();
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}
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int Declaration::isStaticConstructor()
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{
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return FALSE;
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}
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int Declaration::isStaticDestructor()
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{
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return FALSE;
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}
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int Declaration::isDelete()
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{
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return FALSE;
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}
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int Declaration::isDataseg()
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{
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return FALSE;
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}
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int Declaration::isCodeseg()
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{
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return FALSE;
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}
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enum PROT Declaration::prot()
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{
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return protection;
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}
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/********************************* TupleDeclaration ****************************/
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TupleDeclaration::TupleDeclaration(Loc loc, Identifier *id, Objects *objects)
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: Declaration(id)
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{
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this->type = NULL;
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this->objects = objects;
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this->isexp = 0;
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this->tupletype = NULL;
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}
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Dsymbol *TupleDeclaration::syntaxCopy(Dsymbol *s)
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{
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assert(0);
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return NULL;
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}
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char *TupleDeclaration::kind()
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{
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return "tuple";
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}
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Type *TupleDeclaration::getType()
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{
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/* If this tuple represents a type, return that type
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*/
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//printf("TupleDeclaration::getType() %s\n", toChars());
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if (isexp)
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return NULL;
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if (!tupletype)
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{
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/* It's only a type tuple if all the Object's are types
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*/
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for (size_t i = 0; i < objects->dim; i++)
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{ Object *o = (Object *)objects->data[i];
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if (o->dyncast() != DYNCAST_TYPE)
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{
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//printf("\tnot[%d], %p, %d\n", i, o, o->dyncast());
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return NULL;
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}
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}
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/* We know it's a type tuple, so build the TypeTuple
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*/
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Arguments *args = new Arguments();
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args->setDim(objects->dim);
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OutBuffer buf;
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for (size_t i = 0; i < objects->dim; i++)
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{ Type *t = (Type *)objects->data[i];
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//printf("type = %s\n", t->toChars());
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#if 0
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buf.printf("_%s_%d", ident->toChars(), i);
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char *name = (char *)buf.extractData();
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Identifier *id = new Identifier(name, TOKidentifier);
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Argument *arg = new Argument(STCin, t, id, NULL);
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#else
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Argument *arg = new Argument(STCin, t, NULL, NULL);
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#endif
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args->data[i] = (void *)arg;
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}
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tupletype = new TypeTuple(args);
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}
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return tupletype;
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}
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int TupleDeclaration::needThis()
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{
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//printf("TupleDeclaration::needThis(%s)\n", toChars());
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for (size_t i = 0; i < objects->dim; i++)
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{ Object *o = (Object *)objects->data[i];
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if (o->dyncast() == DYNCAST_EXPRESSION)
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{ Expression *e = (Expression *)o;
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if (e->op == TOKdsymbol)
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{ DsymbolExp *ve = (DsymbolExp *)e;
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Declaration *d = ve->s->isDeclaration();
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if (d && d->needThis())
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{
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return 1;
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}
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}
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}
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}
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return 0;
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}
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/********************************* TypedefDeclaration ****************************/
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TypedefDeclaration::TypedefDeclaration(Loc loc, Identifier *id, Type *basetype, Initializer *init)
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: Declaration(id)
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{
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this->type = new TypeTypedef(this);
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this->basetype = basetype->toBasetype();
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this->init = init;
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#ifdef _DH
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this->htype = NULL;
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this->hbasetype = NULL;
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#endif
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this->sem = 0;
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this->inuse = 0;
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this->loc = loc;
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this->sinit = NULL;
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}
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Dsymbol *TypedefDeclaration::syntaxCopy(Dsymbol *s)
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{
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Type *basetype = this->basetype->syntaxCopy();
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Initializer *init = NULL;
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if (this->init)
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init = this->init->syntaxCopy();
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assert(!s);
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TypedefDeclaration *st;
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st = new TypedefDeclaration(loc, ident, basetype, init);
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#ifdef _DH
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// Syntax copy for header file
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if (!htype) // Don't overwrite original
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{ if (type) // Make copy for both old and new instances
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{ htype = type->syntaxCopy();
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st->htype = type->syntaxCopy();
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}
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}
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else // Make copy of original for new instance
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st->htype = htype->syntaxCopy();
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if (!hbasetype)
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{ if (basetype)
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{ hbasetype = basetype->syntaxCopy();
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st->hbasetype = basetype->syntaxCopy();
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}
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}
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else
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st->hbasetype = hbasetype->syntaxCopy();
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#endif
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return st;
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}
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void TypedefDeclaration::semantic(Scope *sc)
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{
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//printf("TypedefDeclaration::semantic(%s) sem = %d\n", toChars(), sem);
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if (sem == 0)
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{ sem = 1;
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basetype = basetype->semantic(loc, sc);
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sem = 2;
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type = type->semantic(loc, sc);
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if (sc->parent->isFuncDeclaration() && init)
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semantic2(sc);
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}
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else if (sem == 1)
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{
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error("circular definition");
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}
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}
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void TypedefDeclaration::semantic2(Scope *sc)
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{
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//printf("TypedefDeclaration::semantic2(%s) sem = %d\n", toChars(), sem);
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if (sem == 2)
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{ sem = 3;
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if (init)
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{
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init = init->semantic(sc, basetype);
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ExpInitializer *ie = init->isExpInitializer();
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if (ie)
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{
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if (ie->exp->type == basetype)
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ie->exp->type = type;
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}
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}
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}
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}
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char *TypedefDeclaration::kind()
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{
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return "typedef";
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}
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Type *TypedefDeclaration::getType()
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{
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return type;
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}
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void TypedefDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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{
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buf->writestring("typedef ");
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basetype->toCBuffer(buf, ident, hgs);
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if (init)
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{
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buf->writestring(" = ");
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init->toCBuffer(buf, hgs);
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}
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buf->writeByte(';');
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buf->writenl();
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}
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/********************************* AliasDeclaration ****************************/
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AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Type *type)
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: Declaration(id)
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{
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//printf("AliasDeclaration(id = '%s', type = %p)\n", id->toChars(), type);
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//printf("type = '%s'\n", type->toChars());
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this->loc = loc;
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this->type = type;
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this->aliassym = NULL;
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#ifdef _DH
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this->htype = NULL;
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this->haliassym = NULL;
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#endif
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this->overnext = NULL;
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this->inSemantic = 0;
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assert(type);
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}
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AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Dsymbol *s)
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: Declaration(id)
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{
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//printf("AliasDeclaration(id = '%s', s = %p)\n", id->toChars(), s);
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assert(s != this);
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this->loc = loc;
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this->type = NULL;
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this->aliassym = s;
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#ifdef _DH
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this->htype = NULL;
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this->haliassym = NULL;
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#endif
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this->overnext = NULL;
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this->inSemantic = 0;
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assert(s);
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}
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Dsymbol *AliasDeclaration::syntaxCopy(Dsymbol *s)
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{
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assert(!s);
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AliasDeclaration *sa;
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if (type)
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sa = new AliasDeclaration(loc, ident, type->syntaxCopy());
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else
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sa = new AliasDeclaration(loc, ident, aliassym->syntaxCopy(NULL));
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#ifdef _DH
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// Syntax copy for header file
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if (!htype) // Don't overwrite original
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{ if (type) // Make copy for both old and new instances
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{ htype = type->syntaxCopy();
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sa->htype = type->syntaxCopy();
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}
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}
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else // Make copy of original for new instance
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sa->htype = htype->syntaxCopy();
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if (!haliassym)
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{ if (aliassym)
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{ haliassym = aliassym->syntaxCopy(s);
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sa->haliassym = aliassym->syntaxCopy(s);
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}
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}
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else
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sa->haliassym = haliassym->syntaxCopy(s);
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#endif
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return sa;
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}
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void AliasDeclaration::semantic(Scope *sc)
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{
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//printf("AliasDeclaration::semantic() %s\n", toChars());
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if (aliassym)
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{
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if (aliassym->isTemplateInstance())
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aliassym->semantic(sc);
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return;
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}
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this->inSemantic = 1;
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if (storage_class & STCconst)
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error("cannot be const");
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storage_class |= sc->stc & STCdeprecated;
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// Given:
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// alias foo.bar.abc def;
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// it is not knowable from the syntax whether this is an alias
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// for a type or an alias for a symbol. It is up to the semantic()
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// pass to distinguish.
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// If it is a type, then type is set and getType() will return that
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// type. If it is a symbol, then aliassym is set and type is NULL -
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// toAlias() will return aliasssym.
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Dsymbol *s;
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Type *t;
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Expression *e;
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/* This section is needed because resolve() will:
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* const x = 3;
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* alias x y;
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* try to alias y to 3.
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*/
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s = type->toDsymbol(sc);
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if (s)
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goto L2; // it's a symbolic alias
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//printf("alias type is %s\n", type->toChars());
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type->resolve(loc, sc, &e, &t, &s);
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if (s)
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{
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goto L2;
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}
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else if (e)
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{
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// Try to convert Expression to Dsymbol
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if (e->op == TOKvar)
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{ s = ((VarExp *)e)->var;
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goto L2;
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}
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else if (e->op == TOKfunction)
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{ s = ((FuncExp *)e)->fd;
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goto L2;
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}
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else
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{ error("cannot alias an expression %s", e->toChars());
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t = e->type;
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}
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}
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else if (t)
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type = t;
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if (overnext)
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ScopeDsymbol::multiplyDefined(0, this, overnext);
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this->inSemantic = 0;
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return;
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L2:
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//printf("alias is a symbol %s %s\n", s->kind(), s->toChars());
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type = NULL;
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VarDeclaration *v = s->isVarDeclaration();
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if (v && v->linkage == LINKdefault)
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{
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error("forward reference of %s", v->toChars());
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s = NULL;
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}
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else
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{
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FuncDeclaration *f = s->toAlias()->isFuncDeclaration();
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if (f)
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{
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if (overnext)
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{
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FuncAliasDeclaration *fa = new FuncAliasDeclaration(f);
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if (!fa->overloadInsert(overnext))
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ScopeDsymbol::multiplyDefined(0, f, overnext);
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overnext = NULL;
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s = fa;
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s->parent = sc->parent;
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}
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}
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if (overnext)
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ScopeDsymbol::multiplyDefined(0, s, overnext);
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if (s == this)
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{
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assert(global.errors);
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s = NULL;
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}
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}
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aliassym = s;
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this->inSemantic = 0;
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}
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int AliasDeclaration::overloadInsert(Dsymbol *s)
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{
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/* Don't know yet what the aliased symbol is, so assume it can
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* be overloaded and check later for correctness.
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*/
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//printf("AliasDeclaration::overloadInsert('%s')\n", s->toChars());
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if (overnext == NULL)
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{ overnext = s;
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return TRUE;
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}
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else
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{
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return overnext->overloadInsert(s);
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}
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}
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char *AliasDeclaration::kind()
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{
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return "alias";
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}
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Type *AliasDeclaration::getType()
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{
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return type;
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}
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Dsymbol *AliasDeclaration::toAlias()
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{
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//printf("AliasDeclaration::toAlias('%s', this = %p, aliassym = %p, kind = '%s')\n", toChars(), this, aliassym, aliassym ? aliassym->kind() : "");
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assert(this != aliassym);
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//static int count; if (++count == 10) *(char*)0=0;
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if (inSemantic)
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{ error("recursive alias declaration");
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// return this;
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}
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Dsymbol *s = aliassym ? aliassym->toAlias() : this;
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return s;
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}
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void AliasDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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{
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buf->writestring("alias ");
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#if 0 && _DH
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if (hgs->hdrgen)
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{
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if (haliassym)
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{
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haliassym->toCBuffer(buf, hgs);
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buf->writeByte(' ');
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buf->writestring(ident->toChars());
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}
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else
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htype->toCBuffer(buf, ident, hgs);
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}
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else
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#endif
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{
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if (aliassym)
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{
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aliassym->toCBuffer(buf, hgs);
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buf->writeByte(' ');
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buf->writestring(ident->toChars());
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}
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else
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type->toCBuffer(buf, ident, hgs);
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}
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buf->writeByte(';');
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buf->writenl();
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}
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|
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/********************************* VarDeclaration ****************************/
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|
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VarDeclaration::VarDeclaration(Loc loc, Type *type, Identifier *id, Initializer *init)
|
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: Declaration(id)
|
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{
|
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//printf("VarDeclaration('%s')\n", id->toChars());
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#ifdef DEBUG
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if (!type && !init)
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{ printf("VarDeclaration('%s')\n", id->toChars());
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//*(char*)0=0;
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}
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#endif
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assert(type || init);
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this->type = type;
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this->init = init;
|
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#ifdef _DH
|
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this->htype = NULL;
|
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this->hinit = NULL;
|
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#endif
|
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this->loc = loc;
|
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offset = 0;
|
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noauto = 0;
|
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nestedref = 0;
|
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inuse = 0;
|
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ctorinit = 0;
|
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aliassym = NULL;
|
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onstack = 0;
|
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canassign = 0;
|
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value = NULL;
|
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irGlobal = NULL;
|
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irLocal = NULL;
|
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irField = NULL;
|
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needsStorage = false;
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}
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|
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Dsymbol *VarDeclaration::syntaxCopy(Dsymbol *s)
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{
|
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//printf("VarDeclaration::syntaxCopy(%s)\n", toChars());
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|
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VarDeclaration *sv;
|
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if (s)
|
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{ sv = (VarDeclaration *)s;
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}
|
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else
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{
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Initializer *init = NULL;
|
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if (this->init)
|
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{ init = this->init->syntaxCopy();
|
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//init->isExpInitializer()->exp->print();
|
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//init->isExpInitializer()->exp->dump(0);
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}
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|
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sv = new VarDeclaration(loc, type ? type->syntaxCopy() : NULL, ident, init);
|
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sv->storage_class = storage_class;
|
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}
|
|
#ifdef _DH
|
|
// Syntax copy for header file
|
|
if (!htype) // Don't overwrite original
|
|
{ if (type) // Make copy for both old and new instances
|
|
{ htype = type->syntaxCopy();
|
|
sv->htype = type->syntaxCopy();
|
|
}
|
|
}
|
|
else // Make copy of original for new instance
|
|
sv->htype = htype->syntaxCopy();
|
|
if (!hinit)
|
|
{ if (init)
|
|
{ hinit = init->syntaxCopy();
|
|
sv->hinit = init->syntaxCopy();
|
|
}
|
|
}
|
|
else
|
|
sv->hinit = hinit->syntaxCopy();
|
|
#endif
|
|
return sv;
|
|
}
|
|
|
|
void VarDeclaration::semantic(Scope *sc)
|
|
{
|
|
//printf("VarDeclaration::semantic('%s', parent = '%s')\n", toChars(), sc->parent->toChars());
|
|
//printf("type = %s\n", type->toChars());
|
|
//printf("linkage = %d\n", sc->linkage);
|
|
//if (strcmp(toChars(), "mul") == 0) halt();
|
|
|
|
storage_class |= sc->stc;
|
|
if (storage_class & STCextern && init)
|
|
error("extern symbols cannot have initializers");
|
|
|
|
/* If auto type inference, do the inference
|
|
*/
|
|
int inferred = 0;
|
|
if (!type)
|
|
{ inuse++;
|
|
type = init->inferType(sc);
|
|
inuse--;
|
|
inferred = 1;
|
|
|
|
/* This is a kludge to support the existing syntax for RAII
|
|
* declarations.
|
|
*/
|
|
storage_class &= ~STCauto;
|
|
originalType = type;
|
|
}
|
|
else
|
|
{ if (!originalType)
|
|
originalType = type;
|
|
type = type->semantic(loc, sc);
|
|
}
|
|
|
|
type->checkDeprecated(loc, sc);
|
|
linkage = sc->linkage;
|
|
this->parent = sc->parent;
|
|
//printf("this = %p, parent = %p, '%s'\n", this, parent, parent->toChars());
|
|
protection = sc->protection;
|
|
//printf("sc->stc = %x\n", sc->stc);
|
|
//printf("storage_class = %x\n", storage_class);
|
|
|
|
Dsymbol *parent = toParent();
|
|
FuncDeclaration *fd = parent->isFuncDeclaration();
|
|
|
|
Type *tb = type->toBasetype();
|
|
if (tb->ty == Tvoid && !(storage_class & STClazy))
|
|
{ error("voids have no value");
|
|
type = Type::terror;
|
|
tb = type;
|
|
}
|
|
if (tb->ty == Tfunction)
|
|
{ error("cannot be declared to be a function");
|
|
type = Type::terror;
|
|
tb = type;
|
|
}
|
|
if (tb->ty == Tstruct)
|
|
{ TypeStruct *ts = (TypeStruct *)tb;
|
|
|
|
if (!ts->sym->members)
|
|
{
|
|
error("no definition of struct %s", ts->toChars());
|
|
}
|
|
}
|
|
|
|
if (tb->ty == Ttuple)
|
|
{ /* Instead, declare variables for each of the tuple elements
|
|
* and add those.
|
|
*/
|
|
TypeTuple *tt = (TypeTuple *)tb;
|
|
size_t nelems = Argument::dim(tt->arguments);
|
|
Objects *exps = new Objects();
|
|
exps->setDim(nelems);
|
|
|
|
for (size_t i = 0; i < nelems; i++)
|
|
{ Argument *arg = Argument::getNth(tt->arguments, i);
|
|
|
|
OutBuffer buf;
|
|
buf.printf("_%s_field_%zu", ident->toChars(), i);
|
|
buf.writeByte(0);
|
|
char *name = (char *)buf.extractData();
|
|
Identifier *id = new Identifier(name, TOKidentifier);
|
|
|
|
VarDeclaration *v = new VarDeclaration(loc, arg->type, id, NULL);
|
|
//printf("declaring field %s of type %s\n", v->toChars(), v->type->toChars());
|
|
v->semantic(sc);
|
|
|
|
if (sc->scopesym)
|
|
{ //printf("adding %s to %s\n", v->toChars(), sc->scopesym->toChars());
|
|
if (sc->scopesym->members)
|
|
sc->scopesym->members->push(v);
|
|
}
|
|
|
|
Expression *e = new DsymbolExp(loc, v);
|
|
exps->data[i] = e;
|
|
}
|
|
TupleDeclaration *v2 = new TupleDeclaration(loc, ident, exps);
|
|
v2->isexp = 1;
|
|
aliassym = v2;
|
|
return;
|
|
}
|
|
|
|
if (storage_class & STCconst && !init && !fd)
|
|
// Initialize by constructor only
|
|
storage_class = (storage_class & ~STCconst) | STCctorinit;
|
|
|
|
if (isConst())
|
|
{
|
|
}
|
|
else if (isStatic())
|
|
{
|
|
}
|
|
else if (isSynchronized())
|
|
{
|
|
error("variable %s cannot be synchronized", toChars());
|
|
}
|
|
else if (isOverride())
|
|
{
|
|
error("override cannot be applied to variable");
|
|
}
|
|
else if (isAbstract())
|
|
{
|
|
error("abstract cannot be applied to variable");
|
|
}
|
|
else if (storage_class & STCtemplateparameter)
|
|
{
|
|
}
|
|
else
|
|
{
|
|
AggregateDeclaration *aad = sc->anonAgg;
|
|
if (!aad)
|
|
aad = parent->isAggregateDeclaration();
|
|
if (aad)
|
|
{
|
|
aad->addField(sc, this);
|
|
}
|
|
|
|
InterfaceDeclaration *id = parent->isInterfaceDeclaration();
|
|
if (id)
|
|
{
|
|
error("field not allowed in interface");
|
|
}
|
|
|
|
TemplateInstance *ti = parent->isTemplateInstance();
|
|
if (ti)
|
|
{
|
|
// Take care of nested templates
|
|
while (1)
|
|
{
|
|
TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance();
|
|
if (!ti2)
|
|
break;
|
|
ti = ti2;
|
|
}
|
|
|
|
// If it's a member template
|
|
AggregateDeclaration *ad = ti->tempdecl->isMember();
|
|
if (ad && storage_class != STCundefined)
|
|
{
|
|
error("cannot use template to add field to aggregate '%s'", ad->toChars());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (type->isauto() && !noauto)
|
|
{
|
|
if (storage_class & (STCfield | STCout | STCref | STCstatic) || !fd)
|
|
{
|
|
error("globals, statics, fields, ref and out parameters cannot be auto");
|
|
}
|
|
|
|
if (!(storage_class & (STCauto | STCscope)))
|
|
{
|
|
if (!(storage_class & STCparameter) && ident != Id::withSym)
|
|
error("reference to scope class must be scope");
|
|
}
|
|
}
|
|
|
|
if (!init && !sc->inunion && !isStatic() && !isConst() && fd &&
|
|
!(storage_class & (STCfield | STCin | STCforeach)) &&
|
|
type->size() != 0)
|
|
{
|
|
// Provide a default initializer
|
|
//printf("Providing default initializer for '%s'\n", toChars());
|
|
if (type->ty == Tstruct &&
|
|
((TypeStruct *)type)->sym->zeroInit == 1)
|
|
{ /* If a struct is all zeros, as a special case
|
|
* set it's initializer to the integer 0.
|
|
* In AssignExp::toElem(), we check for this and issue
|
|
* a memset() to initialize the struct.
|
|
* Must do same check in interpreter.
|
|
*/
|
|
Expression *e = new IntegerExp(loc, 0, Type::tint32);
|
|
Expression *e1;
|
|
e1 = new VarExp(loc, this);
|
|
e = new AssignExp(loc, e1, e);
|
|
e->type = e1->type;
|
|
init = new ExpInitializer(loc, e/*->type->defaultInit()*/);
|
|
return;
|
|
}
|
|
else if (type->ty == Ttypedef)
|
|
{ TypeTypedef *td = (TypeTypedef *)type;
|
|
if (td->sym->init)
|
|
{ init = td->sym->init;
|
|
ExpInitializer *ie = init->isExpInitializer();
|
|
if (ie)
|
|
// Make copy so we can modify it
|
|
init = new ExpInitializer(ie->loc, ie->exp);
|
|
}
|
|
else
|
|
init = getExpInitializer();
|
|
}
|
|
else
|
|
{
|
|
init = getExpInitializer();
|
|
}
|
|
}
|
|
|
|
if (init)
|
|
{
|
|
ArrayInitializer *ai = init->isArrayInitializer();
|
|
if (ai && tb->ty == Taarray)
|
|
{
|
|
init = ai->toAssocArrayInitializer();
|
|
}
|
|
|
|
StructInitializer *si = init->isStructInitializer();
|
|
ExpInitializer *ei = init->isExpInitializer();
|
|
|
|
// See if we can allocate on the stack
|
|
if (ei && isScope() && ei->exp->op == TOKnew)
|
|
{ NewExp *ne = (NewExp *)ei->exp;
|
|
if (!(ne->newargs && ne->newargs->dim))
|
|
{ ne->onstack = 1;
|
|
onstack = 1;
|
|
if (type->isBaseOf(ne->newtype->semantic(loc, sc), NULL))
|
|
onstack = 2;
|
|
}
|
|
}
|
|
|
|
// If inside function, there is no semantic3() call
|
|
if (sc->func)
|
|
{
|
|
// If local variable, use AssignExp to handle all the various
|
|
// possibilities.
|
|
if (fd && !isStatic() && !isConst() && !init->isVoidInitializer())
|
|
{
|
|
Expression *e1;
|
|
Type *t;
|
|
int dim;
|
|
|
|
//printf("fd = '%s', var = '%s'\n", fd->toChars(), toChars());
|
|
if (!ei)
|
|
{
|
|
Expression *e = init->toExpression();
|
|
if (!e)
|
|
{
|
|
init = init->semantic(sc, type);
|
|
e = init->toExpression();
|
|
if (!e)
|
|
{ error("is not a static and cannot have static initializer");
|
|
return;
|
|
}
|
|
}
|
|
ei = new ExpInitializer(init->loc, e);
|
|
init = ei;
|
|
}
|
|
|
|
e1 = new VarExp(loc, this);
|
|
|
|
t = type->toBasetype();
|
|
if (t->ty == Tsarray)
|
|
{
|
|
ei->exp = ei->exp->semantic(sc);
|
|
if (!ei->exp->implicitConvTo(type))
|
|
{
|
|
dim = ((TypeSArray *)t)->dim->toInteger();
|
|
// If multidimensional static array, treat as one large array
|
|
while (1)
|
|
{
|
|
t = t->nextOf()->toBasetype();
|
|
if (t->ty != Tsarray)
|
|
break;
|
|
dim *= ((TypeSArray *)t)->dim->toInteger();
|
|
e1->type = new TypeSArray(t->nextOf(), new IntegerExp(0, dim, Type::tindex));
|
|
}
|
|
}
|
|
e1 = new SliceExp(loc, e1, NULL, NULL);
|
|
}
|
|
else if (t->ty == Tstruct)
|
|
{
|
|
ei->exp = ei->exp->semantic(sc);
|
|
if (!ei->exp->implicitConvTo(type))
|
|
ei->exp = new CastExp(loc, ei->exp, type);
|
|
}
|
|
ei->exp = new AssignExp(loc, e1, ei->exp);
|
|
ei->exp->op = TOKconstruct;
|
|
canassign++;
|
|
ei->exp = ei->exp->semantic(sc);
|
|
canassign--;
|
|
ei->exp->optimize(WANTvalue);
|
|
}
|
|
else
|
|
{
|
|
init = init->semantic(sc, type);
|
|
if (fd && isConst() && !isStatic())
|
|
{ // Make it static
|
|
storage_class |= STCstatic;
|
|
}
|
|
}
|
|
}
|
|
else if (isConst() || isFinal())
|
|
{
|
|
/* Because we may need the results of a const declaration in a
|
|
* subsequent type, such as an array dimension, before semantic2()
|
|
* gets ordinarily run, try to run semantic2() now.
|
|
* Ignore failure.
|
|
*/
|
|
|
|
if (!global.errors && !inferred)
|
|
{
|
|
unsigned errors = global.errors;
|
|
global.gag++;
|
|
//printf("+gag\n");
|
|
Expression *e;
|
|
Initializer *i2 = init;
|
|
inuse++;
|
|
if (ei)
|
|
{
|
|
e = ei->exp->syntaxCopy();
|
|
e = e->semantic(sc);
|
|
e = e->implicitCastTo(sc, type);
|
|
}
|
|
else if (si || ai)
|
|
{ i2 = init->syntaxCopy();
|
|
i2 = i2->semantic(sc, type);
|
|
}
|
|
inuse--;
|
|
global.gag--;
|
|
//printf("-gag\n");
|
|
if (errors != global.errors) // if errors happened
|
|
{
|
|
if (global.gag == 0)
|
|
global.errors = errors; // act as if nothing happened
|
|
}
|
|
else if (ei)
|
|
{
|
|
e = e->optimize(WANTvalue | WANTinterpret);
|
|
if (e->op == TOKint64 || e->op == TOKstring)
|
|
{
|
|
ei->exp = e; // no errors, keep result
|
|
}
|
|
}
|
|
else
|
|
init = i2; // no errors, keep result
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ExpInitializer *VarDeclaration::getExpInitializer()
|
|
{
|
|
ExpInitializer *ei;
|
|
|
|
if (init)
|
|
ei = init->isExpInitializer();
|
|
else
|
|
{
|
|
Expression *e = type->defaultInit();
|
|
if (e)
|
|
ei = new ExpInitializer(loc, e);
|
|
else
|
|
ei = NULL;
|
|
}
|
|
return ei;
|
|
}
|
|
|
|
void VarDeclaration::semantic2(Scope *sc)
|
|
{
|
|
//printf("VarDeclaration::semantic2('%s')\n", toChars());
|
|
if (init && !toParent()->isFuncDeclaration())
|
|
{ inuse++;
|
|
#if 0
|
|
ExpInitializer *ei = init->isExpInitializer();
|
|
if (ei)
|
|
{
|
|
ei->exp->dump(0);
|
|
printf("type = %p\n", ei->exp->type);
|
|
}
|
|
#endif
|
|
init = init->semantic(sc, type);
|
|
inuse--;
|
|
}
|
|
}
|
|
|
|
char *VarDeclaration::kind()
|
|
{
|
|
return "variable";
|
|
}
|
|
|
|
Dsymbol *VarDeclaration::toAlias()
|
|
{
|
|
//printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym);
|
|
assert(this != aliassym);
|
|
Dsymbol *s = aliassym ? aliassym->toAlias() : this;
|
|
return s;
|
|
}
|
|
|
|
void VarDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
{
|
|
if (storage_class & STCconst)
|
|
buf->writestring("const ");
|
|
if (storage_class & STCstatic)
|
|
buf->writestring("static ");
|
|
if (type)
|
|
type->toCBuffer(buf, ident, hgs);
|
|
else
|
|
buf->writestring(ident->toChars());
|
|
if (init)
|
|
{ buf->writestring(" = ");
|
|
init->toCBuffer(buf, hgs);
|
|
}
|
|
buf->writeByte(';');
|
|
buf->writenl();
|
|
}
|
|
|
|
int VarDeclaration::needThis()
|
|
{
|
|
//printf("VarDeclaration::needThis(%s, x%x)\n", toChars(), storage_class);
|
|
return storage_class & STCfield;
|
|
}
|
|
|
|
int VarDeclaration::isImportedSymbol()
|
|
{
|
|
if (protection == PROTexport && !init && (isStatic() || isConst() || parent->isModule()))
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
void VarDeclaration::checkCtorConstInit()
|
|
{
|
|
if (ctorinit == 0 && isCtorinit() && !(storage_class & STCfield))
|
|
error("missing initializer in static constructor for const variable");
|
|
}
|
|
|
|
/************************************
|
|
* Check to see if variable is a reference to an enclosing function
|
|
* or not.
|
|
*/
|
|
|
|
void VarDeclaration::checkNestedReference(Scope *sc, Loc loc)
|
|
{
|
|
if (parent && !isDataseg() && parent != sc->parent)
|
|
{
|
|
FuncDeclaration *fdv = toParent()->isFuncDeclaration();
|
|
FuncDeclaration *fdthis = sc->parent->isFuncDeclaration();
|
|
|
|
if (fdv && fdthis)
|
|
{
|
|
if (loc.filename)
|
|
fdthis->getLevel(loc, fdv);
|
|
nestedref = 1;
|
|
fdv->nestedFrameRef = 1;
|
|
fdv->nestedVars.insert(this);
|
|
//printf("var %s in function %s is nested ref\n", toChars(), fdv->toChars());
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************
|
|
* Does symbol go into data segment?
|
|
*/
|
|
|
|
int VarDeclaration::isDataseg()
|
|
{
|
|
#if 0
|
|
printf("VarDeclaration::isDataseg(%p, '%s')\n", this, toChars());
|
|
printf("%x, %p, %p\n", storage_class & (STCstatic | STCconst), parent->isModule(), parent->isTemplateInstance());
|
|
printf("parent = '%s'\n", parent->toChars());
|
|
#endif
|
|
Dsymbol *parent = this->toParent();
|
|
if (!parent && !(storage_class & (STCstatic | STCconst)))
|
|
{ error("forward referenced");
|
|
type = Type::terror;
|
|
return 0;
|
|
}
|
|
return (storage_class & (STCstatic | STCconst) ||
|
|
parent->isModule() ||
|
|
parent->isTemplateInstance());
|
|
}
|
|
|
|
int VarDeclaration::hasPointers()
|
|
{
|
|
return (!isDataseg() && type->hasPointers());
|
|
}
|
|
|
|
/******************************************
|
|
* If a variable has an auto destructor call, return call for it.
|
|
* Otherwise, return NULL.
|
|
*/
|
|
|
|
Expression *VarDeclaration::callAutoDtor()
|
|
{ Expression *e = NULL;
|
|
|
|
//printf("VarDeclaration::callAutoDtor() %s\n", toChars());
|
|
if (storage_class & (STCauto | STCscope) && !noauto)
|
|
{
|
|
for (ClassDeclaration *cd = type->isClassHandle();
|
|
cd;
|
|
cd = cd->baseClass)
|
|
{
|
|
/* We can do better if there's a way with onstack
|
|
* classes to determine if there's no way the monitor
|
|
* could be set.
|
|
*/
|
|
if (cd->isInterfaceDeclaration())
|
|
error("interface %s cannot be scope", cd->toChars());
|
|
if (1 || onstack || cd->dtors.dim) // if any destructors
|
|
{
|
|
// delete this;
|
|
Expression *ec;
|
|
|
|
ec = new VarExp(loc, this);
|
|
e = new DeleteExp(loc, ec);
|
|
e->type = Type::tvoid;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return e;
|
|
}
|
|
|
|
|
|
/********************************* ClassInfoDeclaration ****************************/
|
|
|
|
ClassInfoDeclaration::ClassInfoDeclaration(ClassDeclaration *cd)
|
|
: VarDeclaration(0, ClassDeclaration::classinfo->type, cd->ident, NULL)
|
|
{
|
|
this->cd = cd;
|
|
storage_class = STCstatic;
|
|
}
|
|
|
|
Dsymbol *ClassInfoDeclaration::syntaxCopy(Dsymbol *s)
|
|
{
|
|
assert(0); // should never be produced by syntax
|
|
return NULL;
|
|
}
|
|
|
|
void ClassInfoDeclaration::semantic(Scope *sc)
|
|
{
|
|
}
|
|
|
|
/********************************* ModuleInfoDeclaration ****************************/
|
|
|
|
ModuleInfoDeclaration::ModuleInfoDeclaration(Module *mod)
|
|
: VarDeclaration(0, Module::moduleinfo->type, mod->ident, NULL)
|
|
{
|
|
this->mod = mod;
|
|
storage_class = STCstatic;
|
|
}
|
|
|
|
Dsymbol *ModuleInfoDeclaration::syntaxCopy(Dsymbol *s)
|
|
{
|
|
assert(0); // should never be produced by syntax
|
|
return NULL;
|
|
}
|
|
|
|
void ModuleInfoDeclaration::semantic(Scope *sc)
|
|
{
|
|
}
|
|
|
|
/********************************* TypeInfoDeclaration ****************************/
|
|
|
|
TypeInfoDeclaration::TypeInfoDeclaration(Type *tinfo, int internal)
|
|
: VarDeclaration(0, Type::typeinfo->type, tinfo->getTypeInfoIdent(internal), NULL)
|
|
{
|
|
this->tinfo = tinfo;
|
|
storage_class = STCstatic;
|
|
protection = PROTpublic;
|
|
linkage = LINKc;
|
|
}
|
|
|
|
Dsymbol *TypeInfoDeclaration::syntaxCopy(Dsymbol *s)
|
|
{
|
|
assert(0); // should never be produced by syntax
|
|
return NULL;
|
|
}
|
|
|
|
void TypeInfoDeclaration::semantic(Scope *sc)
|
|
{
|
|
assert(linkage == LINKc);
|
|
}
|
|
|
|
/***************************** TypeInfoConstDeclaration **********************/
|
|
|
|
#if V2
|
|
TypeInfoConstDeclaration::TypeInfoConstDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/***************************** TypeInfoInvariantDeclaration **********************/
|
|
|
|
#if V2
|
|
TypeInfoInvariantDeclaration::TypeInfoInvariantDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/***************************** TypeInfoStructDeclaration **********************/
|
|
|
|
TypeInfoStructDeclaration::TypeInfoStructDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoClassDeclaration ***********************/
|
|
|
|
TypeInfoClassDeclaration::TypeInfoClassDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoInterfaceDeclaration *******************/
|
|
|
|
TypeInfoInterfaceDeclaration::TypeInfoInterfaceDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoTypedefDeclaration *********************/
|
|
|
|
TypeInfoTypedefDeclaration::TypeInfoTypedefDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoPointerDeclaration *********************/
|
|
|
|
TypeInfoPointerDeclaration::TypeInfoPointerDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoArrayDeclaration ***********************/
|
|
|
|
TypeInfoArrayDeclaration::TypeInfoArrayDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoStaticArrayDeclaration *****************/
|
|
|
|
TypeInfoStaticArrayDeclaration::TypeInfoStaticArrayDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoAssociativeArrayDeclaration ************/
|
|
|
|
TypeInfoAssociativeArrayDeclaration::TypeInfoAssociativeArrayDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoEnumDeclaration ***********************/
|
|
|
|
TypeInfoEnumDeclaration::TypeInfoEnumDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoFunctionDeclaration ********************/
|
|
|
|
TypeInfoFunctionDeclaration::TypeInfoFunctionDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoDelegateDeclaration ********************/
|
|
|
|
TypeInfoDelegateDeclaration::TypeInfoDelegateDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/***************************** TypeInfoTupleDeclaration **********************/
|
|
|
|
TypeInfoTupleDeclaration::TypeInfoTupleDeclaration(Type *tinfo)
|
|
: TypeInfoDeclaration(tinfo, 0)
|
|
{
|
|
}
|
|
|
|
/********************************* ThisDeclaration ****************************/
|
|
|
|
// For the "this" parameter to member functions
|
|
|
|
ThisDeclaration::ThisDeclaration(Type *t)
|
|
: VarDeclaration(0, t, Id::This, NULL)
|
|
{
|
|
noauto = 1;
|
|
}
|
|
|
|
Dsymbol *ThisDeclaration::syntaxCopy(Dsymbol *s)
|
|
{
|
|
assert(0); // should never be produced by syntax
|
|
return NULL;
|
|
}
|
|
|
|
|