| /** |
| * Miscellaneous declarations, including typedef, alias, variable declarations including the |
| * implicit this declaration, type tuples, ClassInfo, ModuleInfo and various TypeInfos. |
| * |
| * Copyright: Copyright (C) 1999-2025 by The D Language Foundation, All Rights Reserved |
| * Authors: $(LINK2 https://www.digitalmars.com, Walter Bright) |
| * License: $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0) |
| * Source: $(LINK2 https://github.com/dlang/dmd/blob/master/compiler/src/dmd/declaration.d, _declaration.d) |
| * Documentation: https://dlang.org/phobos/dmd_declaration.html |
| * Coverage: https://codecov.io/gh/dlang/dmd/src/master/compiler/src/dmd/declaration.d |
| */ |
| |
| module dmd.declaration; |
| |
| import core.stdc.stdio; |
| import dmd.aggregate; |
| import dmd.arraytypes; |
| import dmd.astenums; |
| import dmd.ctorflow; |
| import dmd.dclass; |
| import dmd.delegatize; |
| import dmd.dscope; |
| import dmd.dstruct; |
| import dmd.dsymbol; |
| import dmd.dsymbolsem : dsymbolSemantic, aliasSemantic; |
| import dmd.dtemplate; |
| import dmd.errors; |
| import dmd.expression; |
| import dmd.func; |
| import dmd.funcsem : overloadApply, getLevelAndCheck; |
| import dmd.globals; |
| import dmd.gluelayer; |
| import dmd.hdrgen; |
| import dmd.id; |
| import dmd.identifier; |
| import dmd.init; |
| import dmd.initsem : initializerToExpression, initializerSemantic; |
| import dmd.intrange; |
| import dmd.location; |
| import dmd.mtype; |
| import dmd.common.outbuffer; |
| import dmd.rootobject; |
| import dmd.root.filename; |
| import dmd.target; |
| import dmd.tokens; |
| import dmd.typesem : toDsymbol, typeSemantic, size, hasPointers; |
| import dmd.visitor; |
| |
| version (IN_GCC) {} |
| else version (IN_LLVM) {} |
| else version = MARS; |
| |
| /****************************************** |
| */ |
| void ObjectNotFound(Loc loc, Identifier id) |
| { |
| global.gag = 0; // never gag the fatal error |
| error(loc, "`%s` not found. object.d may be incorrectly installed or corrupt.", id.toChars()); |
| version (IN_LLVM) |
| { |
| errorSupplemental(loc, "ldc2 might not be correctly installed."); |
| errorSupplemental(loc, "Please check your ldc2.conf configuration file."); |
| errorSupplemental(loc, "Installation instructions can be found at http://wiki.dlang.org/LDC."); |
| } |
| else version (MARS) |
| { |
| errorSupplemental(loc, "dmd might not be correctly installed. Run 'dmd -man' for installation instructions."); |
| const dmdConfFile = global.inifilename.length ? FileName.canonicalName(global.inifilename) : "not found"; |
| errorSupplemental(loc, "config file: %.*s", cast(int)dmdConfFile.length, dmdConfFile.ptr); |
| } |
| fatal(); |
| } |
| |
| /* Accumulator for successive matches. |
| */ |
| struct MatchAccumulator |
| { |
| int count; // number of matches found so far |
| MATCH last = MATCH.nomatch; // match level of lastf |
| FuncDeclaration lastf; // last matching function we found |
| FuncDeclaration nextf; // if ambiguous match, this is the "other" function |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) abstract class Declaration : Dsymbol |
| { |
| Type type; |
| Type originalType; // before semantic analysis |
| STC storage_class = STC.none; |
| // overridden symbol with pragma(mangle, "...") |
| const(char)[] mangleOverride; |
| Visibility visibility; |
| short inuse; // used to detect cycles |
| |
| private extern (D) static struct BitFields |
| { |
| LINK _linkage = LINK.default_; // may be `LINK.system`; use `resolvedLinkage()` to resolve it |
| bool wasRead; // set if AliasDeclaration was read |
| bool ignoreRead; // ignore any reads of AliasDeclaration |
| bool noUnderscore; // don't prepend _ to mangled name |
| bool hidden; // don't print this in .di files |
| bool nrvo; /// forward to fd.nrvo_var when generating code |
| } |
| |
| import dmd.common.bitfields; |
| mixin(generateBitFields!(BitFields, ubyte)); |
| |
| final extern (D) this(DSYM tag, Identifier ident) @safe |
| { |
| super(tag, ident); |
| visibility = Visibility(Visibility.Kind.undefined); |
| } |
| |
| final extern (D) this(DSYM tag, Loc loc, Identifier ident) @safe |
| { |
| super(tag, loc, ident); |
| visibility = Visibility(Visibility.Kind.undefined); |
| } |
| |
| override const(char)* kind() const |
| { |
| return "declaration"; |
| } |
| |
| override final uinteger_t size(Loc loc) |
| { |
| assert(type); |
| const sz = type.size(); |
| if (sz == SIZE_INVALID) |
| errors = true; |
| return sz; |
| } |
| |
| final bool isStatic() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.static_) != 0; |
| } |
| |
| /// Returns the linkage, resolving the target-specific `System` one. |
| final LINK resolvedLinkage() const |
| { |
| return _linkage == LINK.system ? target.systemLinkage() : _linkage; |
| } |
| |
| bool isDelete() |
| { |
| return false; |
| } |
| |
| bool isDataseg() |
| { |
| return false; |
| } |
| |
| bool isThreadlocal() |
| { |
| return false; |
| } |
| |
| bool isCodeseg() const pure nothrow @nogc @safe |
| { |
| return false; |
| } |
| |
| final bool isFinal() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.final_) != 0; |
| } |
| |
| bool isAbstract() |
| { |
| return (storage_class & STC.abstract_) != 0; |
| } |
| |
| final bool isConst() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.const_) != 0; |
| } |
| |
| final bool isImmutable() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.immutable_) != 0; |
| } |
| |
| final bool isWild() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.wild) != 0; |
| } |
| |
| final bool isAuto() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.auto_) != 0; |
| } |
| |
| final bool isScope() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.scope_) != 0; |
| } |
| |
| final bool isReturn() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.return_) != 0; |
| } |
| |
| final bool isSynchronized() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.synchronized_) != 0; |
| } |
| |
| final bool isParameter() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.parameter) != 0; |
| } |
| |
| override final bool isDeprecated() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.deprecated_) != 0; |
| } |
| |
| final bool isDisabled() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.disable) != 0; |
| } |
| |
| final bool isOverride() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.override_) != 0; |
| } |
| |
| final bool isResult() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.result) != 0; |
| } |
| |
| final bool isField() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.field) != 0; |
| } |
| |
| final bool isIn() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.in_) != 0; |
| } |
| |
| final bool isOut() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.out_) != 0; |
| } |
| |
| final bool isRef() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.ref_) != 0; |
| } |
| |
| /// Returns: Whether the variable is a reference, annotated with `out` or `ref` |
| final bool isReference() const pure nothrow @nogc @safe |
| { |
| return (storage_class & (STC.ref_ | STC.out_)) != 0; |
| } |
| |
| final bool isFuture() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.future) != 0; |
| } |
| |
| final extern(D) bool isSystem() const pure nothrow @nogc @safe |
| { |
| return (storage_class & STC.system) != 0; |
| } |
| |
| override final Visibility visible() pure nothrow @nogc @safe |
| { |
| return visibility; |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TupleDeclaration : Declaration |
| { |
| Objects* objects; |
| TypeTuple tupletype; // !=null if this is a type tuple |
| bool isexp; // true: expression tuple |
| bool building; // it's growing in AliasAssign semantic |
| |
| extern (D) this(Loc loc, Identifier ident, Objects* objects) @safe |
| { |
| super(DSYM.tupleDeclaration, loc, ident); |
| this.objects = objects; |
| } |
| |
| override TupleDeclaration syntaxCopy(Dsymbol s) |
| { |
| assert(0); |
| } |
| |
| override const(char)* kind() const |
| { |
| return "sequence"; |
| } |
| |
| override Type getType() |
| { |
| /* If this tuple represents a type, return that type |
| */ |
| |
| //printf("TupleDeclaration::getType() %s\n", toChars()); |
| if (isexp || building) |
| return null; |
| if (!tupletype) |
| { |
| /* It's only a type tuple if all the Object's are types |
| */ |
| for (size_t i = 0; i < objects.length; i++) |
| { |
| RootObject o = (*objects)[i]; |
| if (!o.isType()) |
| { |
| //printf("\tnot[%d], %p, %d\n", i, o, o.dyncast()); |
| return null; |
| } |
| } |
| |
| /* We know it's a type tuple, so build the TypeTuple |
| */ |
| Types* types = cast(Types*)objects; |
| auto args = new Parameters(objects.length); |
| OutBuffer buf; |
| int hasdeco = 1; |
| for (size_t i = 0; i < types.length; i++) |
| { |
| Type t = (*types)[i]; |
| //printf("type = %s\n", t.toChars()); |
| version (none) |
| { |
| buf.printf("_%s_%d", ident.toChars(), i); |
| auto id = Identifier.idPool(buf.extractSlice()); |
| auto arg = new Parameter(Loc.initial, STC.in_, t, id, null); |
| } |
| else |
| { |
| auto arg = new Parameter(Loc.initial, STC.none, t, null, null, null); |
| } |
| (*args)[i] = arg; |
| if (!t.deco) |
| hasdeco = 0; |
| } |
| |
| tupletype = new TypeTuple(args); |
| if (hasdeco) |
| return tupletype.typeSemantic(Loc.initial, null); |
| } |
| return tupletype; |
| } |
| |
| override Dsymbol toAlias2() |
| { |
| //printf("TupleDeclaration::toAlias2() '%s' objects = %s\n", toChars(), objects.toChars()); |
| for (size_t i = 0; i < objects.length; i++) |
| { |
| RootObject o = (*objects)[i]; |
| if (Dsymbol s = isDsymbol(o)) |
| { |
| s = s.toAlias2(); |
| (*objects)[i] = s; |
| } |
| } |
| return this; |
| } |
| |
| override bool needThis() |
| { |
| //printf("TupleDeclaration::needThis(%s)\n", toChars()); |
| return isexp ? foreachVar((s) { return s.needThis(); }) != 0 : false; |
| } |
| |
| /*********************************************************** |
| * Calls dg(Dsymbol) for each Dsymbol, which should be a VarDeclaration |
| * inside VarExp (isexp == true). |
| * Params: |
| * dg = delegate to call for each Dsymbol |
| */ |
| extern (D) void foreachVar(scope void delegate(Dsymbol) dg) |
| { |
| assert(isexp); |
| foreach (o; *objects) |
| { |
| if (auto e = o.isExpression()) |
| if (auto ve = e.isVarExp()) |
| dg(ve.var); |
| } |
| } |
| |
| /*********************************************************** |
| * Calls dg(Dsymbol) for each Dsymbol, which should be a VarDeclaration |
| * inside VarExp (isexp == true). |
| * If dg returns !=0, stops and returns that value else returns 0. |
| * Params: |
| * dg = delegate to call for each Dsymbol |
| * Returns: |
| * last value returned by dg() |
| */ |
| extern (D) int foreachVar(scope int delegate(Dsymbol) dg) |
| { |
| assert(isexp); |
| foreach (o; *objects) |
| { |
| if (auto e = o.isExpression()) |
| if (auto ve = e.isVarExp()) |
| if(auto ret = dg(ve.var)) |
| return ret; |
| } |
| return 0; |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| * https://dlang.org/spec/declaration.html#AliasDeclaration |
| */ |
| extern (C++) final class AliasDeclaration : Declaration |
| { |
| Dsymbol aliassym; // alias ident = aliassym; |
| |
| Dsymbol overnext; // next in overload list |
| Dsymbol _import; // !=null if unresolved internal alias for selective import |
| |
| extern (D) this(Loc loc, Identifier ident, Type type) @safe |
| { |
| super(DSYM.aliasDeclaration, loc, ident); |
| //debug printf("AliasDeclaration(id = '%s', type = `%s`, %p)\n", ident.toChars(), dmd.hdrgen.toChars(type), type.isTypeIdentifier()); |
| this.type = type; |
| assert(type); |
| } |
| |
| extern (D) this(Loc loc, Identifier ident, Dsymbol s) @safe |
| { |
| super(DSYM.aliasDeclaration, loc, ident); |
| //debug printf("AliasDeclaration(id = '%s', s = `%s`)\n", ident.toChars(), s.toChars()); |
| assert(s != this); |
| this.aliassym = s; |
| assert(s); |
| } |
| |
| static AliasDeclaration create(Loc loc, Identifier id, Type type) @safe |
| { |
| return new AliasDeclaration(loc, id, type); |
| } |
| |
| override AliasDeclaration syntaxCopy(Dsymbol s) |
| { |
| //printf("AliasDeclaration::syntaxCopy()\n"); |
| assert(!s); |
| AliasDeclaration sa = type ? new AliasDeclaration(loc, ident, type.syntaxCopy()) : new AliasDeclaration(loc, ident, aliassym.syntaxCopy(null)); |
| sa.comment = comment; |
| sa.storage_class = storage_class; |
| return sa; |
| } |
| |
| override bool overloadInsert(Dsymbol s) |
| { |
| //printf("[%s] AliasDeclaration::overloadInsert('%s') s = %s %s @ [%s]\n", |
| // loc.toChars(), toChars(), s.kind(), s.toChars(), s.loc.toChars()); |
| |
| /** Aliases aren't overloadable themselves, but if their Aliasee is |
| * overloadable they are converted to an overloadable Alias (either |
| * FuncAliasDeclaration or OverDeclaration). |
| * |
| * This is done by moving the Aliasee into such an overloadable alias |
| * which is then used to replace the existing Aliasee. The original |
| * Alias (_this_) remains a useless shell. |
| * |
| * This is a horrible mess. It was probably done to avoid replacing |
| * existing AST nodes and references, but it needs a major |
| * simplification b/c it's too complex to maintain. |
| * |
| * A simpler approach might be to merge any colliding symbols into a |
| * simple Overload class (an array) and then later have that resolve |
| * all collisions. |
| */ |
| if (semanticRun >= PASS.semanticdone) |
| { |
| /* Semantic analysis is already finished, and the aliased entity |
| * is not overloadable. |
| */ |
| if (type) |
| { |
| /* |
| If type has been resolved already we could |
| still be inserting an alias from an import. |
| |
| If we are handling an alias then pretend |
| it was inserting and return true, if not then |
| false since we didn't even pretend to insert something. |
| */ |
| return this._import && this.equals(s); |
| } |
| |
| // https://issues.dlang.org/show_bug.cgi?id=23865 |
| // only insert if the symbol can be part of a set |
| const s1 = s.toAlias(); |
| const isInsertCandidate = s1.isFuncDeclaration() || s1.isOverDeclaration() || s1.isTemplateDeclaration(); |
| |
| /* When s is added in member scope by static if, mixin("code") or others, |
| * aliassym is determined already. See the case in: test/compilable/test61.d |
| */ |
| auto sa = aliassym.toAlias(); |
| |
| if (auto td = s.toAlias().isTemplateDeclaration()) |
| s = td.funcroot ? td.funcroot : td; |
| |
| if (auto fd = sa.isFuncDeclaration()) |
| { |
| auto fa = new FuncAliasDeclaration(ident, fd); |
| fa.visibility = visibility; |
| fa.parent = parent; |
| aliassym = fa; |
| if (isInsertCandidate) |
| return aliassym.overloadInsert(s); |
| } |
| if (auto td = sa.isTemplateDeclaration()) |
| { |
| auto od = new OverDeclaration(ident, td.funcroot ? td.funcroot : td); |
| od.visibility = visibility; |
| od.parent = parent; |
| aliassym = od; |
| if (isInsertCandidate) |
| return aliassym.overloadInsert(s); |
| } |
| if (auto od = sa.isOverDeclaration()) |
| { |
| if (sa.ident != ident || sa.parent != parent) |
| { |
| od = new OverDeclaration(ident, od); |
| od.visibility = visibility; |
| od.parent = parent; |
| aliassym = od; |
| } |
| if (isInsertCandidate) |
| return od.overloadInsert(s); |
| } |
| if (auto os = sa.isOverloadSet()) |
| { |
| if (sa.ident != ident || sa.parent != parent) |
| { |
| os = new OverloadSet(ident, os); |
| // TODO: visibility is lost here b/c OverloadSets have no visibility attribute |
| // Might no be a practical issue, b/c the code below fails to resolve the overload anyhow. |
| // ---- |
| // module os1; |
| // import a, b; |
| // private alias merged = foo; // private alias to overload set of a.foo and b.foo |
| // ---- |
| // module os2; |
| // import a, b; |
| // public alias merged = bar; // public alias to overload set of a.bar and b.bar |
| // ---- |
| // module bug; |
| // import os1, os2; |
| // void test() { merged(123); } // should only look at os2.merged |
| // |
| // os.visibility = visibility; |
| os.parent = parent; |
| aliassym = os; |
| } |
| if (isInsertCandidate) |
| { |
| os.push(s); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /* Don't know yet what the aliased symbol is, so assume it can |
| * be overloaded and check later for correctness. |
| */ |
| if (overnext) |
| return overnext.overloadInsert(s); |
| if (s is this) |
| return true; |
| overnext = s; |
| return true; |
| } |
| |
| override const(char)* kind() const |
| { |
| return "alias"; |
| } |
| |
| override Type getType() |
| { |
| if (type) |
| return type; |
| return toAlias().getType(); |
| } |
| |
| override Dsymbol toAlias() |
| { |
| static if (0) |
| printf("[%s] AliasDeclaration::toAlias('%s', this = %p, aliassym: %s, kind: '%s', inuse = %d)\n", |
| loc.toChars(), toChars(), this, aliassym ? aliassym.toChars() : "", aliassym ? aliassym.kind() : "", inuse); |
| assert(this != aliassym); |
| //static int count; if (++count == 10) *(char*)0=0; |
| |
| Dsymbol err() |
| { |
| // Avoid breaking "recursive alias" state during errors gagged |
| if (global.gag) |
| return this; |
| aliassym = new AliasDeclaration(loc, ident, Type.terror); |
| type = Type.terror; |
| return aliassym; |
| } |
| // Reading the AliasDeclaration |
| if (!this.ignoreRead) |
| this.wasRead = true; // can never assign to this AliasDeclaration again |
| |
| if (inuse == 1 && type && _scope) |
| { |
| inuse = 2; |
| const olderrors = global.errors; |
| Dsymbol s = type.toDsymbol(_scope); |
| //printf("[%s] type = %s, s = %p, this = %p\n", loc.toChars(), type.toChars(), s, this); |
| if (global.errors != olderrors) |
| return err(); |
| if (s) |
| { |
| s = s.toAlias(); |
| if (global.errors != olderrors) |
| return err(); |
| aliassym = s; |
| inuse = 0; |
| } |
| else |
| { |
| Type t = type.typeSemantic(loc, _scope); |
| if (t.ty == Terror) |
| return err(); |
| if (global.errors != olderrors) |
| return err(); |
| //printf("t = %s\n", t.toChars()); |
| inuse = 0; |
| } |
| } |
| if (inuse) |
| { |
| .error(loc, "%s `%s` recursive alias declaration", kind, toPrettyChars); |
| return err(); |
| } |
| |
| if (semanticRun >= PASS.semanticdone) |
| { |
| // semantic is already done. |
| |
| // Do not see aliassym !is null, because of lambda aliases. |
| |
| // Do not see type.deco !is null, even so "alias T = const int;` needs |
| // semantic analysis to take the storage class `const` as type qualifier. |
| } |
| else |
| { |
| // stop AliasAssign tuple building |
| if (aliassym) |
| { |
| if (auto td = aliassym.isTupleDeclaration()) |
| { |
| if (td.building) |
| { |
| td.building = false; |
| semanticRun = PASS.semanticdone; |
| return td; |
| } |
| } |
| } |
| if (_import && _import._scope) |
| { |
| /* If this is an internal alias for selective/renamed import, |
| * load the module first. |
| */ |
| _import.dsymbolSemantic(null); |
| } |
| if (_scope) |
| { |
| aliasSemantic(this, _scope); |
| } |
| } |
| |
| inuse = 1; |
| Dsymbol s = aliassym ? aliassym.toAlias() : this; |
| inuse = 0; |
| return s; |
| } |
| |
| override Dsymbol toAlias2() |
| { |
| if (inuse) |
| { |
| .error(loc, "%s `%s` recursive alias declaration", kind, toPrettyChars); |
| return this; |
| } |
| inuse = 1; |
| Dsymbol s = aliassym ? aliassym.toAlias2() : this; |
| inuse = 0; |
| return s; |
| } |
| |
| override bool isOverloadable() const |
| { |
| // assume overloadable until alias is resolved |
| return semanticRun < PASS.semanticdone || |
| aliassym && aliassym.isOverloadable(); |
| } |
| |
| /** Returns: `true` if this instance was created to make a template parameter |
| visible in the scope of a template body, `false` otherwise */ |
| extern (D) bool isAliasedTemplateParameter() const |
| { |
| return !!(storage_class & STC.templateparameter); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class OverDeclaration : Declaration |
| { |
| Dsymbol overnext; // next in overload list |
| Dsymbol aliassym; |
| |
| extern (D) this(Identifier ident, Dsymbol s) @safe |
| { |
| super(DSYM.overDeclaration, ident); |
| this.aliassym = s; |
| } |
| |
| override const(char)* kind() const |
| { |
| return "overload alias"; // todo |
| } |
| |
| override bool equals(const RootObject o) const |
| { |
| if (this == o) |
| return true; |
| |
| auto s = isDsymbol(o); |
| if (!s) |
| return false; |
| |
| if (auto od2 = s.isOverDeclaration()) |
| return this.aliassym.equals(od2.aliassym); |
| return this.aliassym == s; |
| } |
| |
| override bool overloadInsert(Dsymbol s) |
| { |
| //printf("OverDeclaration::overloadInsert('%s') aliassym = %p, overnext = %p\n", s.toChars(), aliassym, overnext); |
| if (overnext) |
| return overnext.overloadInsert(s); |
| if (s == this) |
| return true; |
| overnext = s; |
| return true; |
| } |
| |
| override bool isOverloadable() const |
| { |
| return true; |
| } |
| |
| Dsymbol isUnique() |
| { |
| Dsymbol result = null; |
| overloadApply(aliassym, (Dsymbol s) |
| { |
| if (result) |
| { |
| result = null; |
| return 1; // ambiguous, done |
| } |
| else |
| { |
| result = s; |
| return 0; |
| } |
| }); |
| return result; |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) class VarDeclaration : Declaration |
| { |
| Initializer _init; |
| FuncDeclarations nestedrefs; // referenced by these lexically nested functions |
| TupleDeclaration aliasTuple; // when `this` is really a tuple of declarations |
| VarDeclaration lastVar; // Linked list of variables for goto-skips-init detection |
| Expression edtor; // if !=null, does the destruction of the variable |
| IntRange* range; // if !=null, the variable is known to be within the range |
| |
| uint endlinnum; // line number of end of scope that this var lives in |
| uint offset; |
| uint sequenceNumber; // order the variables are declared |
| structalign_t alignment; |
| |
| // When interpreting, these point to the value (NULL if value not determinable) |
| // The index of this variable on the CTFE stack, AdrOnStackNone if not allocated |
| enum AdrOnStackNone = ~0u; |
| uint ctfeAdrOnStack; |
| |
| // `bool` fields that are compacted into bit fields in a string mixin |
| private extern (D) static struct BitFields |
| { |
| bool isargptr; /// if parameter that _argptr points to |
| bool ctorinit; /// it has been initialized in a ctor |
| bool iscatchvar; /// this is the exception object variable in catch() clause |
| bool isowner; /// this is an Owner, despite it being `scope` |
| bool setInCtorOnly; /// field can only be set in a constructor, as it is const or immutable |
| |
| /// It is a class that was allocated on the stack |
| /// |
| /// This means the var is not rebindable once assigned, |
| /// and the destructor gets run when it goes out of scope |
| bool onstack; |
| |
| bool overlapped; /// if it is a field and has overlapping |
| bool overlapUnsafe; /// if it is an overlapping field and the overlaps are unsafe |
| bool maybeScope; /// allow inferring 'scope' for this variable |
| bool doNotInferReturn; /// do not infer 'return' for this variable |
| |
| bool isArgDtorVar; /// temporary created to handle scope destruction of a function argument |
| bool isCmacro; /// it is a C macro turned into a C declaration |
| bool dllImport; /// __declspec(dllimport) |
| bool dllExport; /// __declspec(dllexport) |
| version (MARS) |
| { |
| bool inClosure; /// is inserted into a GC allocated closure |
| bool inAlignSection; /// is inserted into an aligned section on stack |
| } |
| bool systemInferred; /// @system was inferred from initializer |
| } |
| |
| import dmd.common.bitfields : generateBitFields; |
| mixin(generateBitFields!(BitFields, uint)); |
| |
| byte canassign; // it can be assigned to |
| ubyte isdataseg; // private data for isDataseg 0 unset, 1 true, 2 false |
| |
| final extern (D) this(Loc loc, Type type, Identifier ident, Initializer _init, STC storage_class = STC.none) |
| in |
| { |
| assert(ident); |
| } |
| do |
| { |
| //printf("VarDeclaration('%s')\n", ident.toChars()); |
| super(DSYM.varDeclaration, loc, ident); |
| debug |
| { |
| if (!type && !_init) |
| { |
| //printf("VarDeclaration('%s')\n", ident.toChars()); |
| //*(char*)0=0; |
| } |
| } |
| |
| assert(type || _init); |
| this.type = type; |
| this._init = _init; |
| ctfeAdrOnStack = AdrOnStackNone; |
| this.storage_class = storage_class; |
| } |
| |
| static VarDeclaration create(Loc loc, Type type, Identifier ident, Initializer _init, StorageClass storage_class = STC.none) |
| { |
| return new VarDeclaration(loc, type, ident, _init, cast(STC) storage_class); |
| } |
| |
| override VarDeclaration syntaxCopy(Dsymbol s) |
| { |
| //printf("VarDeclaration::syntaxCopy(%s)\n", toChars()); |
| assert(!s); |
| auto v = new VarDeclaration(loc, type ? type.syntaxCopy() : null, ident, _init ? _init.syntaxCopy() : null, storage_class); |
| v.comment = comment; |
| return v; |
| } |
| |
| override const(char)* kind() const |
| { |
| return "variable"; |
| } |
| |
| override final inout(AggregateDeclaration) isThis() inout |
| { |
| if (!(storage_class & (STC.static_ | STC.extern_ | STC.manifest | STC.templateparameter | STC.gshared | STC.ctfe))) |
| { |
| /* The casting is necessary because `s = s.parent` is otherwise rejected |
| */ |
| for (auto s = cast(Dsymbol)this; s; s = s.parent) |
| { |
| if (auto ad = (cast(inout)s).isMember()) |
| return ad; |
| if (!s.parent || !s.parent.isTemplateMixin()) |
| break; |
| } |
| } |
| return null; |
| } |
| |
| override final bool needThis() |
| { |
| //printf("VarDeclaration::needThis(%s, x%x)\n", toChars(), storage_class); |
| return isField(); |
| } |
| |
| override final bool isExport() const |
| { |
| return visibility.kind == Visibility.Kind.export_ || dllExport; |
| } |
| |
| override final bool isImportedSymbol() const |
| { |
| /* If global variable has `export` and `extern` then it is imported |
| * export int sym1; // definition: exported |
| * export extern int sym2; // declaration: imported |
| * export extern int sym3 = 0; // error, extern cannot have initializer |
| */ |
| bool result = |
| dllImport || |
| visibility.kind == Visibility.Kind.export_ && |
| storage_class & STC.extern_ && |
| (storage_class & STC.static_ || parent.isModule()); |
| //printf("isImportedSymbol() %s %d\n", toChars(), result); |
| return result; |
| } |
| |
| final bool isCtorinit() const pure nothrow @nogc @safe |
| { |
| return setInCtorOnly; |
| } |
| |
| /******************************* |
| * Does symbol go into data segment? |
| * Includes extern variables. |
| */ |
| override final bool isDataseg() |
| { |
| version (none) |
| { |
| printf("VarDeclaration::isDataseg(%p, '%s')\n", this, toChars()); |
| printf("%llx, isModule: %p, isTemplateInstance: %p, isNspace: %p\n", |
| storage_class & (STC.static_ | STC.const_), parent.isModule(), parent.isTemplateInstance(), parent.isNspace()); |
| printf("parent = '%s'\n", parent.toChars()); |
| } |
| |
| if (isdataseg == 0) // the value is not cached |
| { |
| isdataseg = 2; // The Variables does not go into the datasegment |
| |
| if (!canTakeAddressOf()) |
| { |
| return false; |
| } |
| |
| Dsymbol parent = toParent(); |
| if (!parent && !(storage_class & STC.static_)) |
| { |
| .error(loc, "%s `%s` forward referenced", kind, toPrettyChars); |
| type = Type.terror; |
| } |
| else if (storage_class & (STC.static_ | STC.extern_ | STC.gshared) || |
| parent.isModule() || parent.isTemplateInstance() || parent.isNspace()) |
| { |
| assert(!isParameter() && !isResult()); |
| isdataseg = 1; // It is in the DataSegment |
| } |
| } |
| |
| return (isdataseg == 1); |
| } |
| /************************************ |
| * Does symbol go into thread local storage? |
| */ |
| override final bool isThreadlocal() |
| { |
| //printf("VarDeclaration::isThreadlocal(%p, '%s')\n", this, toChars()); |
| /* Data defaults to being thread-local. It is not thread-local |
| * if it is immutable, const or shared. |
| */ |
| bool i = isDataseg() && !(storage_class & (STC.immutable_ | STC.const_ | STC.shared_ | STC.gshared)); |
| //printf("\treturn %d\n", i); |
| return i; |
| } |
| |
| /******************************************** |
| * Can variable be read and written by CTFE? |
| */ |
| final bool isCTFE() |
| { |
| return (storage_class & STC.ctfe) != 0; // || !isDataseg(); |
| } |
| |
| final bool isOverlappedWith(VarDeclaration v) |
| { |
| const vsz = v.type.size(); |
| const tsz = type.size(); |
| assert(vsz != SIZE_INVALID && tsz != SIZE_INVALID); |
| |
| // Overlap is checked by comparing bit offsets |
| auto bitoffset = offset * 8; |
| auto vbitoffset = v.offset * 8; |
| |
| // Bitsize of types are overridden by any bit-field widths. |
| ulong tbitsize; |
| if (auto bf = isBitFieldDeclaration()) |
| { |
| bitoffset += bf.bitOffset; |
| tbitsize = bf.fieldWidth; |
| } |
| else |
| tbitsize = tsz * 8; |
| |
| ulong vbitsize; |
| if (auto vbf = v.isBitFieldDeclaration()) |
| { |
| vbitoffset += vbf.bitOffset; |
| vbitsize = vbf.fieldWidth; |
| } |
| else |
| vbitsize = vsz * 8; |
| |
| return bitoffset < vbitoffset + vbitsize && |
| vbitoffset < bitoffset + tbitsize; |
| } |
| |
| override final bool hasPointers() |
| { |
| //printf("VarDeclaration::hasPointers() %s, ty = %d\n", toChars(), type.ty); |
| return (!isDataseg() && type.hasPointers()); |
| } |
| |
| /************************************* |
| * Return true if we can take the address of this variable. |
| */ |
| final bool canTakeAddressOf() @safe |
| { |
| return !(storage_class & STC.manifest); |
| } |
| |
| /****************************************** |
| * Return true if variable needs to call the destructor. |
| */ |
| final bool needsScopeDtor() @safe |
| { |
| //printf("VarDeclaration::needsScopeDtor() %s %d\n", toChars(), edtor && !(storage_class & STC.nodtor)); |
| return edtor && !(storage_class & STC.nodtor); |
| } |
| |
| /******************************************* |
| * If variable has a constant expression initializer, get it. |
| * Otherwise, return null. |
| */ |
| extern (D) final Expression getConstInitializer(bool needFullType = true) |
| { |
| assert(type && _init); |
| |
| // Ungag errors when not speculative |
| const oldgag = global.gag; |
| if (global.gag) |
| { |
| Dsymbol sym = isMember(); |
| if (sym && !sym.isSpeculative()) |
| global.gag = 0; |
| } |
| |
| if (_scope) |
| { |
| inuse++; |
| _init = _init.initializerSemantic(_scope, type, INITinterpret); |
| import dmd.semantic2 : lowerStaticAAs; |
| lowerStaticAAs(this, _scope); |
| _scope = null; |
| inuse--; |
| } |
| |
| Expression e = _init.initializerToExpression(needFullType ? type : null); |
| global.gag = oldgag; |
| return e; |
| } |
| |
| /************************************ |
| * Check to see if this variable is actually in an enclosing function |
| * rather than the current one. |
| * Update nestedrefs[], closureVars[] and outerVars[]. |
| * Returns: true if error occurs. |
| */ |
| extern (D) final bool checkNestedReference(Scope* sc, Loc loc) |
| { |
| //printf("VarDeclaration::checkNestedReference() %s\n", toChars()); |
| if (sc.intypeof == 1 || sc.ctfe) |
| return false; |
| if (!parent || parent == sc.parent) |
| return false; |
| if (isDataseg() || (storage_class & STC.manifest)) |
| return false; |
| |
| // The current function |
| FuncDeclaration fdthis = sc.parent.isFuncDeclaration(); |
| if (!fdthis) |
| return false; // out of function scope |
| |
| Dsymbol p = toParent2(); |
| |
| // Function literals from fdthis to p must be delegates |
| ensureStaticLinkTo(fdthis, p); |
| |
| // The function that this variable is in |
| FuncDeclaration fdv = p.isFuncDeclaration(); |
| if (!fdv || fdv == fdthis) |
| return false; |
| |
| // Add fdthis to nestedrefs[] if not already there |
| if (!nestedrefs.contains(fdthis)) |
| nestedrefs.push(fdthis); |
| |
| //printf("\tfdv = %s\n", fdv.toChars()); |
| //printf("\tfdthis = %s\n", fdthis.toChars()); |
| if (loc.isValid()) |
| { |
| if (fdthis.getLevelAndCheck(loc, sc, fdv, this) == fdthis.LevelError) |
| return true; |
| } |
| |
| // Add this VarDeclaration to fdv.closureVars[] if not already there |
| if (!sc.intypeof && !sc.traitsCompiles && |
| // https://issues.dlang.org/show_bug.cgi?id=17605 |
| (fdv.skipCodegen || !fdthis.skipCodegen)) |
| { |
| if (!fdv.closureVars.contains(this)) |
| fdv.closureVars.push(this); |
| } |
| |
| if (!fdthis.outerVars.contains(this)) |
| fdthis.outerVars.push(this); |
| |
| //printf("fdthis is %s\n", fdthis.toChars()); |
| //printf("var %s in function %s is nested ref\n", toChars(), fdv.toChars()); |
| // __dollar creates problems because it isn't a real variable |
| // https://issues.dlang.org/show_bug.cgi?id=3326 |
| if (ident == Id.dollar) |
| { |
| .error(loc, "cannnot use `$` inside a function literal"); |
| return true; |
| } |
| if (ident == Id.withSym) // https://issues.dlang.org/show_bug.cgi?id=1759 |
| { |
| ExpInitializer ez = _init.isExpInitializer(); |
| assert(ez); |
| Expression e = ez.exp; |
| if (e.op == EXP.construct || e.op == EXP.blit) |
| e = (cast(AssignExp)e).e2; |
| return lambdaCheckForNestedRef(e, sc); |
| } |
| |
| return false; |
| } |
| |
| override final Dsymbol toAlias() |
| { |
| //printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym); |
| if ((!type || !type.deco) && _scope) |
| dsymbolSemantic(this, _scope); |
| |
| assert(this != aliasTuple); |
| Dsymbol s = aliasTuple ? aliasTuple.toAlias() : this; |
| return s; |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /******************************************************* |
| * C11 6.7.2.1-4 bit fields |
| */ |
| extern (C++) class BitFieldDeclaration : VarDeclaration |
| { |
| Expression width; |
| |
| uint fieldWidth; |
| uint bitOffset; |
| |
| final extern (D) this(Loc loc, Type type, Identifier ident, Expression width) |
| { |
| super(loc, type, ident, null); |
| this.dsym = DSYM.bitFieldDeclaration; |
| this.width = width; |
| this.storage_class |= STC.field; |
| } |
| |
| override BitFieldDeclaration syntaxCopy(Dsymbol s) |
| { |
| //printf("BitFieldDeclaration::syntaxCopy(%s)\n", toChars()); |
| assert(!s); |
| auto bf = new BitFieldDeclaration(loc, type ? type.syntaxCopy() : null, ident, width.syntaxCopy()); |
| bf.comment = comment; |
| return bf; |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| |
| /*********************************** |
| * Retrieve the .min or .max values. |
| * Only valid after semantic analysis. |
| * Params: |
| * id = Id.min or Id.max |
| * Returns: |
| * the min or max value |
| */ |
| final ulong getMinMax(Identifier id) |
| { |
| const width = fieldWidth; |
| const uns = type.isUnsigned(); |
| const min = id == Id.min; |
| ulong v; |
| assert(width != 0); // should have been rejected in semantic pass |
| if (width == ulong.sizeof * 8) |
| v = uns ? (min ? ulong.min : ulong.max) |
| : (min ? long.min : long.max); |
| else |
| v = uns ? (min ? 0 |
| : (1L << width) - 1) |
| : (min ? -(1L << (width - 1)) |
| : (1L << (width - 1)) - 1); |
| return v; |
| } |
| } |
| |
| /*********************************************************** |
| * This is a shell around a back end symbol |
| */ |
| extern (C++) final class SymbolDeclaration : Declaration |
| { |
| AggregateDeclaration dsym; |
| |
| extern (D) this(Loc loc, AggregateDeclaration dsym) @safe |
| { |
| super(DSYM.symbolDeclaration, loc, dsym.ident); |
| this.dsym = dsym; |
| storage_class |= STC.const_; |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| private Identifier getTypeInfoIdent(Type t) |
| { |
| import dmd.mangle; |
| import core.stdc.stdlib; |
| import dmd.root.rmem; |
| // _init_10TypeInfo_%s |
| OutBuffer buf; |
| buf.reserve(32); |
| mangleToBuffer(t, buf); |
| |
| const slice = buf[]; |
| |
| // Allocate buffer on stack, fail over to using malloc() |
| char[128] namebuf; |
| const namelen = 19 + size_t.sizeof * 3 + slice.length + 1; |
| auto name = namelen <= namebuf.length ? namebuf.ptr : cast(char*)Mem.check(malloc(namelen)); |
| |
| const length = snprintf(name, namelen, "_D%lluTypeInfo_%.*s6__initZ", |
| cast(ulong)(9 + slice.length), cast(int)slice.length, slice.ptr); |
| //printf("%p %s, deco = %s, name = %s\n", this, toChars(), deco, name); |
| assert(0 < length && length < namelen); // don't overflow the buffer |
| |
| auto id = Identifier.idPool(name[0 .. length]); |
| |
| if (name != namebuf.ptr) |
| free(name); |
| return id; |
| } |
| |
| extern (C++) class TypeInfoDeclaration : VarDeclaration |
| { |
| Type tinfo; |
| |
| final extern (D) this(Type tinfo) |
| { |
| super(Loc.initial, Type.dtypeinfo.type, tinfo.getTypeInfoIdent(), null); |
| this.dsym = DSYM.typeInfoDeclaration; |
| this.tinfo = tinfo; |
| storage_class = STC.static_ | STC.gshared; |
| visibility = Visibility(Visibility.Kind.public_); |
| _linkage = LINK.c; |
| alignment.set(target.ptrsize); |
| } |
| |
| static TypeInfoDeclaration create(Type tinfo) |
| { |
| return new TypeInfoDeclaration(tinfo); |
| } |
| |
| override final TypeInfoDeclaration syntaxCopy(Dsymbol s) |
| { |
| assert(0); // should never be produced by syntax |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoStructDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfostruct) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Struct); |
| } |
| type = Type.typeinfostruct.type; |
| } |
| |
| static TypeInfoStructDeclaration create(Type tinfo) |
| { |
| return new TypeInfoStructDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoClassDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoclass) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Class); |
| } |
| type = Type.typeinfoclass.type; |
| } |
| |
| static TypeInfoClassDeclaration create(Type tinfo) |
| { |
| return new TypeInfoClassDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoInterfaceDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfointerface) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Interface); |
| } |
| type = Type.typeinfointerface.type; |
| } |
| |
| static TypeInfoInterfaceDeclaration create(Type tinfo) |
| { |
| return new TypeInfoInterfaceDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoPointerDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfopointer) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Pointer); |
| } |
| type = Type.typeinfopointer.type; |
| } |
| |
| static TypeInfoPointerDeclaration create(Type tinfo) |
| { |
| return new TypeInfoPointerDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoArrayDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoarray) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Array); |
| } |
| type = Type.typeinfoarray.type; |
| } |
| |
| static TypeInfoArrayDeclaration create(Type tinfo) |
| { |
| return new TypeInfoArrayDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoStaticArrayDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfostaticarray) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_StaticArray); |
| } |
| type = Type.typeinfostaticarray.type; |
| } |
| |
| static TypeInfoStaticArrayDeclaration create(Type tinfo) |
| { |
| return new TypeInfoStaticArrayDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoAssociativeArrayDeclaration : TypeInfoDeclaration |
| { |
| Type entry; // type of TypeInfo_AssociativeArray.Entry!(t.index, t.next) |
| |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoassociativearray) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_AssociativeArray); |
| } |
| type = Type.typeinfoassociativearray.type; |
| } |
| |
| static TypeInfoAssociativeArrayDeclaration create(Type tinfo) |
| { |
| return new TypeInfoAssociativeArrayDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoEnumDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoenum) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Enum); |
| } |
| type = Type.typeinfoenum.type; |
| } |
| |
| static TypeInfoEnumDeclaration create(Type tinfo) |
| { |
| return new TypeInfoEnumDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoFunctionDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfofunction) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Function); |
| } |
| type = Type.typeinfofunction.type; |
| } |
| |
| static TypeInfoFunctionDeclaration create(Type tinfo) |
| { |
| return new TypeInfoFunctionDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoDelegateDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfodelegate) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Delegate); |
| } |
| type = Type.typeinfodelegate.type; |
| } |
| |
| static TypeInfoDelegateDeclaration create(Type tinfo) |
| { |
| return new TypeInfoDelegateDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoTupleDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfotypelist) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Tuple); |
| } |
| type = Type.typeinfotypelist.type; |
| } |
| |
| static TypeInfoTupleDeclaration create(Type tinfo) |
| { |
| return new TypeInfoTupleDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoConstDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoconst) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Const); |
| } |
| type = Type.typeinfoconst.type; |
| } |
| |
| static TypeInfoConstDeclaration create(Type tinfo) |
| { |
| return new TypeInfoConstDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoInvariantDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoinvariant) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Invariant); |
| } |
| type = Type.typeinfoinvariant.type; |
| } |
| |
| static TypeInfoInvariantDeclaration create(Type tinfo) |
| { |
| return new TypeInfoInvariantDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoSharedDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfoshared) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Shared); |
| } |
| type = Type.typeinfoshared.type; |
| } |
| |
| static TypeInfoSharedDeclaration create(Type tinfo) |
| { |
| return new TypeInfoSharedDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoWildDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfowild) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Wild); |
| } |
| type = Type.typeinfowild.type; |
| } |
| |
| static TypeInfoWildDeclaration create(Type tinfo) |
| { |
| return new TypeInfoWildDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| */ |
| extern (C++) final class TypeInfoVectorDeclaration : TypeInfoDeclaration |
| { |
| extern (D) this(Type tinfo) |
| { |
| super(tinfo); |
| if (!Type.typeinfovector) |
| { |
| ObjectNotFound(loc, Id.TypeInfo_Vector); |
| } |
| type = Type.typeinfovector.type; |
| } |
| |
| static TypeInfoVectorDeclaration create(Type tinfo) |
| { |
| return new TypeInfoVectorDeclaration(tinfo); |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
| |
| /*********************************************************** |
| * For the "this" parameter to member functions |
| */ |
| extern (C++) final class ThisDeclaration : VarDeclaration |
| { |
| extern (D) this(Loc loc, Type t) |
| { |
| super(loc, t, Id.This, null); |
| this.dsym = DSYM.thisDeclaration; |
| storage_class |= STC.nodtor; |
| } |
| |
| override ThisDeclaration syntaxCopy(Dsymbol s) |
| { |
| assert(0); // should never be produced by syntax |
| } |
| |
| override void accept(Visitor v) |
| { |
| v.visit(this); |
| } |
| } |
