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dsymbol.d
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dsymbol.d
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/**
* The base class for a D symbol, which can be a module, variable, function, enum, etc.
*
* Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 http://www.digitalmars.com, Walter Bright)
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dsymbol.d, _dsymbol.d)
* Documentation: https://dlang.org/phobos/dmd_dsymbol.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dsymbol.d
*/
module dmd.dsymbol;
import core.stdc.stdarg;
import core.stdc.stdio;
import core.stdc.string;
import core.stdc.stdlib;
import dmd.aggregate;
import dmd.aliasthis;
import dmd.arraytypes;
import dmd.attrib;
import dmd.ast_node;
import dmd.gluelayer;
import dmd.dclass;
import dmd.declaration;
import dmd.denum;
import dmd.dimport;
import dmd.dmodule;
import dmd.dversion;
import dmd.dscope;
import dmd.dstruct;
import dmd.dsymbolsem;
import dmd.dtemplate;
import dmd.errors;
import dmd.expression;
import dmd.expressionsem;
import dmd.func;
import dmd.globals;
import dmd.id;
import dmd.identifier;
import dmd.init;
import dmd.lexer;
import dmd.mtype;
import dmd.nspace;
import dmd.opover;
import dmd.root.aav;
import dmd.root.rmem;
import dmd.root.rootobject;
import dmd.root.speller;
import dmd.root.string;
import dmd.statement;
import dmd.tokens;
import dmd.visitor;
/***************************************
* Calls dg(Dsymbol *sym) for each Dsymbol.
* If dg returns !=0, stops and returns that value else returns 0.
* Params:
* symbols = Dsymbols
* dg = delegate to call for each Dsymbol
* Returns:
* last value returned by dg()
*
* See_Also: $(REF each, dmd, root, array)
*/
int foreachDsymbol(Dsymbols* symbols, scope int delegate(Dsymbol) dg)
{
assert(dg);
if (symbols)
{
/* Do not use foreach, as the size of the array may expand during iteration
*/
for (size_t i = 0; i < symbols.dim; ++i)
{
Dsymbol s = (*symbols)[i];
const result = dg(s);
if (result)
return result;
}
}
return 0;
}
/***************************************
* Calls dg(Dsymbol *sym) for each Dsymbol.
* Params:
* symbols = Dsymbols
* dg = delegate to call for each Dsymbol
*
* See_Also: $(REF each, dmd, root, array)
*/
void foreachDsymbol(Dsymbols* symbols, scope void delegate(Dsymbol) dg)
{
assert(dg);
if (symbols)
{
/* Do not use foreach, as the size of the array may expand during iteration
*/
for (size_t i = 0; i < symbols.dim; ++i)
{
Dsymbol s = (*symbols)[i];
dg(s);
}
}
}
struct Ungag
{
uint oldgag;
extern (D) this(uint old)
{
this.oldgag = old;
}
extern (C++) ~this()
{
global.gag = oldgag;
}
}
struct Visibility
{
///
enum Kind : ubyte
{
undefined,
none, // no access
private_,
package_,
protected_,
public_,
export_,
}
Kind kind;
Package pkg;
extern (D):
this(Visibility.Kind kind) pure nothrow @nogc @safe
{
this.kind = kind;
}
/**
* Checks if `this` is less or more visible than `other`
*
* Params:
* other = Visibility to compare `this` to.
*
* Returns:
* A value `< 0` if `this` is less visible than `other`,
* a value `> 0` if `this` is more visible than `other`,
* and `0` if they are at the same level.
* Note that `package` visibility with different packages
* will also return `0`.
*/
int opCmp(const Visibility other) const pure nothrow @nogc @safe
{
return this.kind - other.kind;
}
///
unittest
{
assert(Visibility(Visibility.Kind.public_) > Visibility(Visibility.Kind.private_));
assert(Visibility(Visibility.Kind.private_) < Visibility(Visibility.Kind.protected_));
assert(Visibility(Visibility.Kind.package_) >= Visibility(Visibility.Kind.package_));
}
/**
* Checks if `this` is absolutely identical visibility attribute to `other`
*/
bool opEquals(ref const Visibility other) const
{
if (this.kind == other.kind)
{
if (this.kind == Visibility.Kind.package_)
return this.pkg == other.pkg;
return true;
}
return false;
}
}
enum PASS : int
{
init, // initial state
semantic, // semantic() started
semanticdone, // semantic() done
semantic2, // semantic2() started
semantic2done, // semantic2() done
semantic3, // semantic3() started
semantic3done, // semantic3() done
inline, // inline started
inlinedone, // inline done
obj, // toObjFile() run
}
// Search options
enum : int
{
IgnoreNone = 0x00, // default
IgnorePrivateImports = 0x01, // don't search private imports
IgnoreErrors = 0x02, // don't give error messages
IgnoreAmbiguous = 0x04, // return NULL if ambiguous
SearchLocalsOnly = 0x08, // only look at locals (don't search imports)
SearchImportsOnly = 0x10, // only look in imports
SearchUnqualifiedModule = 0x20, // the module scope search is unqualified,
// meaning don't search imports in that scope,
// because qualified module searches search
// their imports
IgnoreSymbolVisibility = 0x80, // also find private and package protected symbols
}
/***********************************************************
*/
extern (C++) class Dsymbol : ASTNode
{
Identifier ident;
Dsymbol parent;
/// C++ namespace this symbol belongs to
CPPNamespaceDeclaration cppnamespace;
Symbol* csym; // symbol for code generator
Symbol* isym; // import version of csym
const(char)* comment; // documentation comment for this Dsymbol
const Loc loc; // where defined
Scope* _scope; // !=null means context to use for semantic()
const(char)* prettystring; // cached value of toPrettyChars()
bool errors; // this symbol failed to pass semantic()
PASS semanticRun = PASS.init;
ushort localNum; /// perturb mangled name to avoid collisions with those in FuncDeclaration.localsymtab
DeprecatedDeclaration depdecl; // customized deprecation message
UserAttributeDeclaration userAttribDecl; // user defined attributes
// !=null means there's a ddoc unittest associated with this symbol
// (only use this with ddoc)
UnitTestDeclaration ddocUnittest;
final extern (D) this()
{
//printf("Dsymbol::Dsymbol(%p)\n", this);
loc = Loc(null, 0, 0);
}
final extern (D) this(Identifier ident)
{
//printf("Dsymbol::Dsymbol(%p, ident)\n", this);
this.loc = Loc(null, 0, 0);
this.ident = ident;
}
final extern (D) this(const ref Loc loc, Identifier ident)
{
//printf("Dsymbol::Dsymbol(%p, ident)\n", this);
this.loc = loc;
this.ident = ident;
}
static Dsymbol create(Identifier ident)
{
return new Dsymbol(ident);
}
override const(char)* toChars() const
{
return ident ? ident.toChars() : "__anonymous";
}
// helper to print fully qualified (template) arguments
const(char)* toPrettyCharsHelper()
{
return toChars();
}
final const(Loc) getLoc()
{
if (!loc.isValid()) // avoid bug 5861.
if (const m = getModule())
return Loc(m.srcfile.toChars(), 0, 0);
return loc;
}
final const(char)* locToChars()
{
return getLoc().toChars();
}
override bool equals(const RootObject o) const
{
if (this == o)
return true;
if (o.dyncast() != DYNCAST.dsymbol)
return false;
auto s = cast(Dsymbol)o;
// Overload sets don't have an ident
// Function-local declarations may have identical names
// if they are declared in different scopes
if (s && ident && s.ident && ident.equals(s.ident) && localNum == s.localNum)
return true;
return false;
}
final bool isAnonymous() const
{
return ident is null || ident.isAnonymous;
}
extern(D) private const(char)[] prettyFormatHelper()
{
const cstr = toPrettyChars();
return '`' ~ cstr.toDString() ~ "`\0";
}
static if (__VERSION__ < 2092)
{
final void error(const ref Loc loc, const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
.verror(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
final void error(const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
const loc = getLoc();
.verror(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
final void deprecation(const ref Loc loc, const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
.vdeprecation(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
final void deprecation(const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
const loc = getLoc();
.vdeprecation(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
}
else
{
pragma(printf) final void error(const ref Loc loc, const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
.verror(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
pragma(printf) final void error(const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
const loc = getLoc();
.verror(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
pragma(printf) final void deprecation(const ref Loc loc, const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
.vdeprecation(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
pragma(printf) final void deprecation(const(char)* format, ...)
{
va_list ap;
va_start(ap, format);
const loc = getLoc();
.vdeprecation(loc, format, ap, kind(), prettyFormatHelper().ptr);
va_end(ap);
}
}
final bool checkDeprecated(const ref Loc loc, Scope* sc)
{
if (global.params.useDeprecated == DiagnosticReporting.off)
return false;
if (!this.isDeprecated())
return false;
// Don't complain if we're inside a deprecated symbol's scope
if (sc.isDeprecated())
return false;
// Don't complain if we're inside a template constraint
// https://issues.dlang.org/show_bug.cgi?id=21831
if (sc.flags & SCOPE.constraint)
return false;
const(char)* message = null;
for (Dsymbol p = this; p; p = p.parent)
{
message = p.depdecl ? p.depdecl.getMessage() : null;
if (message)
break;
}
if (message)
deprecation(loc, "is deprecated - %s", message);
else
deprecation(loc, "is deprecated");
if (auto ti = sc.parent ? sc.parent.isInstantiated() : null)
ti.printInstantiationTrace(Classification.deprecation);
else if (auto ti = sc.parent ? sc.parent.isTemplateInstance() : null)
ti.printInstantiationTrace(Classification.deprecation);
return true;
}
/**********************************
* Determine which Module a Dsymbol is in.
*/
final Module getModule()
{
//printf("Dsymbol::getModule()\n");
if (TemplateInstance ti = isInstantiated())
return ti.tempdecl.getModule();
Dsymbol s = this;
while (s)
{
//printf("\ts = %s '%s'\n", s.kind(), s.toPrettyChars());
Module m = s.isModule();
if (m)
return m;
s = s.parent;
}
return null;
}
/**********************************
* Determine which Module a Dsymbol is in, as far as access rights go.
*/
final Module getAccessModule()
{
//printf("Dsymbol::getAccessModule()\n");
if (TemplateInstance ti = isInstantiated())
return ti.tempdecl.getAccessModule();
Dsymbol s = this;
while (s)
{
//printf("\ts = %s '%s'\n", s.kind(), s.toPrettyChars());
Module m = s.isModule();
if (m)
return m;
TemplateInstance ti = s.isTemplateInstance();
if (ti && ti.enclosing)
{
/* Because of local template instantiation, the parent isn't where the access
* rights come from - it's the template declaration
*/
s = ti.tempdecl;
}
else
s = s.parent;
}
return null;
}
/**
* `pastMixin` returns the enclosing symbol if this is a template mixin.
*
* `pastMixinAndNspace` does likewise, additionally skipping over Nspaces that
* are mangleOnly.
*
* See also `parent`, `toParent` and `toParent2`.
*/
final inout(Dsymbol) pastMixin() inout
{
//printf("Dsymbol::pastMixin() %s\n", toChars());
if (!isTemplateMixin() && !isForwardingAttribDeclaration() && !isForwardingScopeDsymbol())
return this;
if (!parent)
return null;
return parent.pastMixin();
}
/**********************************
* `parent` field returns a lexically enclosing scope symbol this is a member of.
*
* `toParent()` returns a logically enclosing scope symbol this is a member of.
* It skips over TemplateMixin's.
*
* `toParent2()` returns an enclosing scope symbol this is living at runtime.
* It skips over both TemplateInstance's and TemplateMixin's.
* It's used when looking for the 'this' pointer of the enclosing function/class.
*
* `toParentDecl()` similar to `toParent2()` but always follows the template declaration scope
* instead of the instantiation scope.
*
* `toParentLocal()` similar to `toParentDecl()` but follows the instantiation scope
* if a template declaration is non-local i.e. global or static.
*
* Examples:
* ---
* module mod;
* template Foo(alias a) { mixin Bar!(); }
* mixin template Bar() {
* public { // VisibilityDeclaration
* void baz() { a = 2; }
* }
* }
* void test() {
* int v = 1;
* alias foo = Foo!(v);
* foo.baz();
* assert(v == 2);
* }
*
* // s == FuncDeclaration('mod.test.Foo!().Bar!().baz()')
* // s.parent == TemplateMixin('mod.test.Foo!().Bar!()')
* // s.toParent() == TemplateInstance('mod.test.Foo!()')
* // s.toParent2() == FuncDeclaration('mod.test')
* // s.toParentDecl() == Module('mod')
* // s.toParentLocal() == FuncDeclaration('mod.test')
* ---
*/
final inout(Dsymbol) toParent() inout
{
return parent ? parent.pastMixin() : null;
}
/// ditto
final inout(Dsymbol) toParent2() inout
{
if (!parent || !parent.isTemplateInstance && !parent.isForwardingAttribDeclaration() && !parent.isForwardingScopeDsymbol())
return parent;
return parent.toParent2;
}
/// ditto
final inout(Dsymbol) toParentDecl() inout
{
return toParentDeclImpl(false);
}
/// ditto
final inout(Dsymbol) toParentLocal() inout
{
return toParentDeclImpl(true);
}
private inout(Dsymbol) toParentDeclImpl(bool localOnly) inout
{
auto p = toParent();
if (!p || !p.isTemplateInstance())
return p;
auto ti = p.isTemplateInstance();
if (ti.tempdecl && (!localOnly || !(cast(TemplateDeclaration)ti.tempdecl).isstatic))
return ti.tempdecl.toParentDeclImpl(localOnly);
return parent.toParentDeclImpl(localOnly);
}
/**
* Returns the declaration scope scope of `this` unless any of the symbols
* `p1` or `p2` resides in its enclosing instantiation scope then the
* latter is returned.
*/
final Dsymbol toParentP(Dsymbol p1, Dsymbol p2 = null)
{
return followInstantiationContext(p1, p2) ? toParent2() : toParentLocal();
}
final inout(TemplateInstance) isInstantiated() inout
{
if (!parent)
return null;
auto ti = parent.isTemplateInstance();
if (ti && !ti.isTemplateMixin())
return ti;
return parent.isInstantiated();
}
/***
* Returns true if any of the symbols `p1` or `p2` resides in the enclosing
* instantiation scope of `this`.
*/
final bool followInstantiationContext(Dsymbol p1, Dsymbol p2 = null)
{
static bool has2This(Dsymbol s)
{
if (auto f = s.isFuncDeclaration())
return f.isThis2;
if (auto ad = s.isAggregateDeclaration())
return ad.vthis2 !is null;
return false;
}
if (has2This(this))
{
assert(p1);
auto outer = toParent();
while (outer)
{
auto ti = outer.isTemplateInstance();
if (!ti)
break;
foreach (oarg; *ti.tiargs)
{
auto sa = getDsymbol(oarg);
if (!sa)
continue;
sa = sa.toAlias().toParent2();
if (!sa)
continue;
if (sa == p1)
return true;
else if (p2 && sa == p2)
return true;
}
outer = ti.tempdecl.toParent();
}
return false;
}
return false;
}
// Check if this function is a member of a template which has only been
// instantiated speculatively, eg from inside is(typeof()).
// Return the speculative template instance it is part of,
// or NULL if not speculative.
final inout(TemplateInstance) isSpeculative() inout
{
if (!parent)
return null;
auto ti = parent.isTemplateInstance();
if (ti && ti.gagged)
return ti;
if (!parent.toParent())
return null;
return parent.isSpeculative();
}
final Ungag ungagSpeculative() const
{
uint oldgag = global.gag;
if (global.gag && !isSpeculative() && !toParent2().isFuncDeclaration())
global.gag = 0;
return Ungag(oldgag);
}
// kludge for template.isSymbol()
override final DYNCAST dyncast() const
{
return DYNCAST.dsymbol;
}
/*************************************
* Do syntax copy of an array of Dsymbol's.
*/
extern (D) static Dsymbols* arraySyntaxCopy(Dsymbols* a)
{
Dsymbols* b = null;
if (a)
{
b = a.copy();
for (size_t i = 0; i < b.dim; i++)
{
(*b)[i] = (*b)[i].syntaxCopy(null);
}
}
return b;
}
Identifier getIdent()
{
return ident;
}
const(char)* toPrettyChars(bool QualifyTypes = false)
{
if (prettystring && !QualifyTypes)
return prettystring;
//printf("Dsymbol::toPrettyChars() '%s'\n", toChars());
if (!parent)
{
auto s = toChars();
if (!QualifyTypes)
prettystring = s;
return s;
}
// Computer number of components
size_t complength = 0;
for (Dsymbol p = this; p; p = p.parent)
++complength;
// Allocate temporary array comp[]
alias T = const(char)[];
auto compptr = cast(T*)Mem.check(malloc(complength * T.sizeof));
auto comp = compptr[0 .. complength];
// Fill in comp[] and compute length of final result
size_t length = 0;
int i;
for (Dsymbol p = this; p; p = p.parent)
{
const s = QualifyTypes ? p.toPrettyCharsHelper() : p.toChars();
const len = strlen(s);
comp[i] = s[0 .. len];
++i;
length += len + 1;
}
auto s = cast(char*)mem.xmalloc_noscan(length);
auto q = s + length - 1;
*q = 0;
foreach (j; 0 .. complength)
{
const t = comp[j].ptr;
const len = comp[j].length;
q -= len;
memcpy(q, t, len);
if (q == s)
break;
*--q = '.';
}
free(comp.ptr);
if (!QualifyTypes)
prettystring = s;
return s;
}
const(char)* kind() const pure nothrow @nogc @safe
{
return "symbol";
}
/*********************************
* If this symbol is really an alias for another,
* return that other.
* If needed, semantic() is invoked due to resolve forward reference.
*/
Dsymbol toAlias()
{
return this;
}
/*********************************
* Resolve recursive tuple expansion in eponymous template.
*/
Dsymbol toAlias2()
{
return toAlias();
}
void addMember(Scope* sc, ScopeDsymbol sds)
{
//printf("Dsymbol::addMember('%s')\n", toChars());
//printf("Dsymbol::addMember(this = %p, '%s' scopesym = '%s')\n", this, toChars(), sds.toChars());
//printf("Dsymbol::addMember(this = %p, '%s' sds = %p, sds.symtab = %p)\n", this, toChars(), sds, sds.symtab);
parent = sds;
if (isAnonymous()) // no name, so can't add it to symbol table
return;
if (!sds.symtabInsert(this)) // if name is already defined
{
if (isAliasDeclaration() && !_scope)
setScope(sc);
Dsymbol s2 = sds.symtabLookup(this,ident);
if (!s2.overloadInsert(this))
{
sds.multiplyDefined(Loc.initial, this, s2);
errors = true;
}
}
if (sds.isAggregateDeclaration() || sds.isEnumDeclaration())
{
if (ident == Id.__sizeof || ident == Id.__xalignof || ident == Id._mangleof)
{
error("`.%s` property cannot be redefined", ident.toChars());
errors = true;
}
}
}
/*************************************
* Set scope for future semantic analysis so we can
* deal better with forward references.
*/
void setScope(Scope* sc)
{
//printf("Dsymbol::setScope() %p %s, %p stc = %llx\n", this, toChars(), sc, sc.stc);
if (!sc.nofree)
sc.setNoFree(); // may need it even after semantic() finishes
_scope = sc;
if (sc.depdecl)
depdecl = sc.depdecl;
if (!userAttribDecl)
userAttribDecl = sc.userAttribDecl;
}
void importAll(Scope* sc)
{
}
/*********************************************
* Search for ident as member of s.
* Params:
* loc = location to print for error messages
* ident = identifier to search for
* flags = IgnoreXXXX
* Returns:
* null if not found
*/
Dsymbol search(const ref Loc loc, Identifier ident, int flags = IgnoreNone)
{
//printf("Dsymbol::search(this=%p,%s, ident='%s')\n", this, toChars(), ident.toChars());
return null;
}
extern (D) final Dsymbol search_correct(Identifier ident)
{
/***************************************************
* Search for symbol with correct spelling.
*/
extern (D) Dsymbol symbol_search_fp(const(char)[] seed, out int cost)
{
/* If not in the lexer's string table, it certainly isn't in the symbol table.
* Doing this first is a lot faster.
*/
if (!seed.length)
return null;
Identifier id = Identifier.lookup(seed);
if (!id)
return null;
cost = 0; // all the same cost
Dsymbol s = this;
Module.clearCache();
return s.search(Loc.initial, id, IgnoreErrors);
}
if (global.gag)
return null; // don't do it for speculative compiles; too time consuming
// search for exact name first
if (auto s = search(Loc.initial, ident, IgnoreErrors))
return s;
return speller!symbol_search_fp(ident.toString());
}
/***************************************
* Search for identifier id as a member of `this`.
* `id` may be a template instance.
*
* Params:
* loc = location to print the error messages
* sc = the scope where the symbol is located
* id = the id of the symbol
* flags = the search flags which can be `SearchLocalsOnly` or `IgnorePrivateImports`
*
* Returns:
* symbol found, NULL if not
*/
extern (D) final Dsymbol searchX(const ref Loc loc, Scope* sc, RootObject id, int flags)
{
//printf("Dsymbol::searchX(this=%p,%s, ident='%s')\n", this, toChars(), ident.toChars());
Dsymbol s = toAlias();
Dsymbol sm;
if (Declaration d = s.isDeclaration())
{
if (d.inuse)
{
.error(loc, "circular reference to `%s`", d.toPrettyChars());
return null;
}
}
switch (id.dyncast())
{
case DYNCAST.identifier:
sm = s.search(loc, cast(Identifier)id, flags);
break;
case DYNCAST.dsymbol:
{
// It's a template instance
//printf("\ttemplate instance id\n");
Dsymbol st = cast(Dsymbol)id;
TemplateInstance ti = st.isTemplateInstance();
sm = s.search(loc, ti.name);
if (!sm)
{
sm = s.search_correct(ti.name);
if (sm)
.error(loc, "template identifier `%s` is not a member of %s `%s`, did you mean %s `%s`?", ti.name.toChars(), s.kind(), s.toPrettyChars(), sm.kind(), sm.toChars());
else
.error(loc, "template identifier `%s` is not a member of %s `%s`", ti.name.toChars(), s.kind(), s.toPrettyChars());
return null;
}
sm = sm.toAlias();
TemplateDeclaration td = sm.isTemplateDeclaration();
if (!td)
{
.error(loc, "`%s.%s` is not a template, it is a %s", s.toPrettyChars(), ti.name.toChars(), sm.kind());
return null;
}
ti.tempdecl = td;
if (!ti.semanticRun)
ti.dsymbolSemantic(sc);
sm = ti.toAlias();
break;
}
case DYNCAST.type:
case DYNCAST.expression:
default:
assert(0);
}
return sm;
}
bool overloadInsert(Dsymbol s)
{
//printf("Dsymbol::overloadInsert('%s')\n", s.toChars());
return false;
}
/*********************************
* Returns:
* SIZE_INVALID when the size cannot be determined
*/
d_uns64 size(const ref Loc loc)
{
error("Dsymbol `%s` has no size", toChars());
return SIZE_INVALID;
}
bool isforwardRef()
{
return false;
}
// is a 'this' required to access the member
inout(AggregateDeclaration) isThis() inout
{
return null;
}
// is Dsymbol exported?
bool isExport() const
{
return false;
}
// is Dsymbol imported?
bool isImportedSymbol() const
{
return false;
}
// is Dsymbol deprecated?
bool isDeprecated() @safe @nogc pure nothrow const
{
return false;
}
bool isOverloadable() const
{
return false;
}
// is this a LabelDsymbol()?
LabelDsymbol isLabel()
{
return null;
}
/// Returns an AggregateDeclaration when toParent() is that.
final inout(AggregateDeclaration) isMember() inout
{
//printf("Dsymbol::isMember() %s\n", toChars());
auto p = toParent();
//printf("parent is %s %s\n", p.kind(), p.toChars());
return p ? p.isAggregateDeclaration() : null;
}
/// Returns an AggregateDeclaration when toParent2() is that.
final inout(AggregateDeclaration) isMember2() inout
{
//printf("Dsymbol::isMember2() '%s'\n", toChars());
auto p = toParent2();
//printf("parent is %s %s\n", p.kind(), p.toChars());
return p ? p.isAggregateDeclaration() : null;
}
/// Returns an AggregateDeclaration when toParentDecl() is that.
final inout(AggregateDeclaration) isMemberDecl() inout