mirror of
https://github.com/xomboverlord/ldc.git
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386 lines
9.4 KiB
C
386 lines
9.4 KiB
C
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// Compiler implementation of the D programming language
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// Copyright (c) 1999-2009 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 "root.h"
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#include "dsymbol.h"
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#include "import.h"
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#include "identifier.h"
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#include "module.h"
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#include "scope.h"
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#include "hdrgen.h"
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#include "mtype.h"
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#include "declaration.h"
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#include "id.h"
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#include "attrib.h"
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/********************************* Import ****************************/
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Import::Import(Loc loc, Identifiers *packages, Identifier *id, Identifier *aliasId,
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int isstatic)
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: Dsymbol(id)
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{
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assert(id);
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this->loc = loc;
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this->packages = packages;
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this->id = id;
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this->aliasId = aliasId;
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this->isstatic = isstatic;
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pkg = NULL;
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mod = NULL;
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if (aliasId)
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this->ident = aliasId;
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// Kludge to change Import identifier to first package
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else if (packages && packages->dim)
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this->ident = packages->tdata()[0];
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}
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void Import::addAlias(Identifier *name, Identifier *alias)
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{
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if (isstatic)
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error("cannot have an import bind list");
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if (!aliasId)
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this->ident = NULL; // make it an anonymous import
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names.push(name);
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aliases.push(alias);
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}
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const char *Import::kind()
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{
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return isstatic ? (char *)"static import" : (char *)"import";
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}
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Dsymbol *Import::syntaxCopy(Dsymbol *s)
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{
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assert(!s);
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Import *si;
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si = new Import(loc, packages, id, aliasId, isstatic);
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for (size_t i = 0; i < names.dim; i++)
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{
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si->addAlias(names.tdata()[i], aliases.tdata()[i]);
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}
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return si;
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}
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void Import::load(Scope *sc)
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{
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//printf("Import::load('%s')\n", toChars());
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// See if existing module
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DsymbolTable *dst = Package::resolve(packages, NULL, &pkg);
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Dsymbol *s = dst->lookup(id);
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if (s)
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{
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#if TARGET_NET
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mod = (Module *)s;
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#else
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if (s->isModule())
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mod = (Module *)s;
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else
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error("package and module have the same name");
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#endif
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}
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if (!mod)
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{
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// Load module
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mod = Module::load(loc, packages, id);
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dst->insert(id, mod); // id may be different from mod->ident,
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// if so then insert alias
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if (!mod->importedFrom)
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mod->importedFrom = sc ? sc->module->importedFrom : Module::rootModule;
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}
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if (!pkg)
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pkg = mod;
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//printf("-Import::load('%s'), pkg = %p\n", toChars(), pkg);
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}
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void escapePath(OutBuffer *buf, const char *fname)
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{
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while (1)
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{
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switch (*fname)
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{
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case 0:
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return;
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case '(':
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case ')':
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case '\\':
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buf->writebyte('\\');
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default:
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buf->writebyte(*fname);
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break;
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}
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fname++;
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}
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}
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void Import::importAll(Scope *sc)
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{
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if (!mod)
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{
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load(sc);
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mod->importAll(0);
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if (!isstatic && !aliasId && !names.dim)
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{
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/* Default to private importing
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*/
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enum PROT prot = sc->protection;
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if (!sc->explicitProtection)
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prot = PROTprivate;
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sc->scopesym->importScope(mod, prot);
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}
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}
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}
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void Import::semantic(Scope *sc)
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{
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//printf("Import::semantic('%s')\n", toChars());
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// Load if not already done so
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if (!mod)
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{ load(sc);
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mod->importAll(0);
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}
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if (mod)
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{
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#if 0
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if (mod->loc.linnum != 0)
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{ /* If the line number is not 0, then this is not
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* a 'root' module, i.e. it was not specified on the command line.
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*/
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mod->importedFrom = sc->module->importedFrom;
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assert(mod->importedFrom);
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}
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#endif
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// Modules need a list of each imported module
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//printf("%s imports %s\n", sc->module->toChars(), mod->toChars());
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sc->module->aimports.push(mod);
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if (!isstatic && !aliasId && !names.dim)
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{
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/* Default to private importing
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*/
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enum PROT prot = sc->protection;
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if (!sc->explicitProtection)
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prot = PROTprivate;
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for (Scope *scd = sc; scd; scd = scd->enclosing)
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{
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if (scd->scopesym)
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{
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scd->scopesym->importScope(mod, prot);
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break;
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}
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}
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}
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mod->semantic();
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if (mod->needmoduleinfo)
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{ //printf("module4 %s because of %s\n", sc->module->toChars(), mod->toChars());
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sc->module->needmoduleinfo = 1;
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}
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sc = sc->push(mod);
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for (size_t i = 0; i < aliasdecls.dim; i++)
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{ Dsymbol *s = aliasdecls.tdata()[i];
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//printf("\tImport alias semantic('%s')\n", s->toChars());
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if (!mod->search(loc, names.tdata()[i], 0))
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error("%s not found", (names.tdata()[i])->toChars());
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s->semantic(sc);
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}
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sc = sc->pop();
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}
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if (global.params.moduleDeps != NULL)
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{
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/* The grammar of the file is:
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* ImportDeclaration
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* ::= BasicImportDeclaration [ " : " ImportBindList ] [ " -> "
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* ModuleAliasIdentifier ] "\n"
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*
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* BasicImportDeclaration
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* ::= ModuleFullyQualifiedName " (" FilePath ") : " Protection
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* " [ " static" ] : " ModuleFullyQualifiedName " (" FilePath ")"
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*
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* FilePath
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* - any string with '(', ')' and '\' escaped with the '\' character
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*/
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OutBuffer *ob = global.params.moduleDeps;
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ob->writestring(sc->module->toPrettyChars());
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ob->writestring(" (");
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escapePath(ob, sc->module->srcfile->toChars());
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ob->writestring(") : ");
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ProtDeclaration::protectionToCBuffer(ob, sc->protection);
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if (isstatic)
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StorageClassDeclaration::stcToCBuffer(ob, STCstatic);
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ob->writestring(": ");
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if (packages)
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{
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for (size_t i = 0; i < packages->dim; i++)
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{
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Identifier *pid = packages->tdata()[i];
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ob->printf("%s.", pid->toChars());
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}
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}
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ob->writestring(id->toChars());
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ob->writestring(" (");
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if (mod)
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escapePath(ob, mod->srcfile->toChars());
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else
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ob->writestring("???");
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ob->writebyte(')');
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for (size_t i = 0; i < names.dim; i++)
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{
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if (i == 0)
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ob->writebyte(':');
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else
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ob->writebyte(',');
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Identifier *name = names.tdata()[i];
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Identifier *alias = aliases.tdata()[i];
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if (!alias)
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{
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ob->printf("%s", name->toChars());
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alias = name;
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}
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else
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ob->printf("%s=%s", alias->toChars(), name->toChars());
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}
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if (aliasId)
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ob->printf(" -> %s", aliasId->toChars());
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ob->writenl();
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}
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//printf("-Import::semantic('%s'), pkg = %p\n", toChars(), pkg);
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}
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void Import::semantic2(Scope *sc)
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{
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//printf("Import::semantic2('%s')\n", toChars());
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mod->semantic2();
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if (mod->needmoduleinfo)
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{ //printf("module5 %s because of %s\n", sc->module->toChars(), mod->toChars());
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sc->module->needmoduleinfo = 1;
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}
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}
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Dsymbol *Import::toAlias()
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{
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if (aliasId)
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return mod;
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return this;
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}
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/*****************************
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* Add import to sd's symbol table.
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*/
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int Import::addMember(Scope *sc, ScopeDsymbol *sd, int memnum)
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{
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int result = 0;
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if (names.dim == 0)
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return Dsymbol::addMember(sc, sd, memnum);
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if (aliasId)
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result = Dsymbol::addMember(sc, sd, memnum);
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/* Instead of adding the import to sd's symbol table,
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* add each of the alias=name pairs
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*/
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for (size_t i = 0; i < names.dim; i++)
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{
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Identifier *name = names.tdata()[i];
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Identifier *alias = aliases.tdata()[i];
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if (!alias)
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alias = name;
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TypeIdentifier *tname = new TypeIdentifier(loc, name);
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AliasDeclaration *ad = new AliasDeclaration(loc, alias, tname);
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result |= ad->addMember(sc, sd, memnum);
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aliasdecls.push(ad);
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}
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return result;
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}
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Dsymbol *Import::search(Loc loc, Identifier *ident, int flags)
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{
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//printf("%s.Import::search(ident = '%s', flags = x%x)\n", toChars(), ident->toChars(), flags);
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if (!pkg)
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{ load(NULL);
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mod->semantic();
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}
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// Forward it to the package/module
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return pkg->search(loc, ident, flags);
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}
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int Import::overloadInsert(Dsymbol *s)
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{
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// Allow multiple imports of the same name
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return s->isImport() != NULL;
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}
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void Import::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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{
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if (hgs->hdrgen && id == Id::object)
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return; // object is imported by default
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if (isstatic)
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buf->writestring("static ");
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buf->writestring("import ");
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if (aliasId)
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{
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buf->printf("%s = ", aliasId->toChars());
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}
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if (packages && packages->dim)
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{
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for (size_t i = 0; i < packages->dim; i++)
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{ Identifier *pid = packages->tdata()[i];
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buf->printf("%s.", pid->toChars());
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}
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}
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buf->printf("%s;", id->toChars());
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buf->writenl();
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}
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