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/* Compiler implementation of the D programming language
* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
* written by Walter Bright
* Distributed under the Boost Software License, Version 1.0.
#pragma once
#include "root/port.h"
#include "ast_node.h"
#include "globals.h"
#include "arraytypes.h"
#include "visitor.h"
class CPPNamespaceDeclaration;
class Identifier;
struct Scope;
class DsymbolTable;
class Declaration;
class ThisDeclaration;
class BitFieldDeclaration;
class TypeInfoDeclaration;
class TupleDeclaration;
class AliasDeclaration;
class AggregateDeclaration;
class EnumDeclaration;
class ClassDeclaration;
class InterfaceDeclaration;
class StructDeclaration;
class UnionDeclaration;
class FuncDeclaration;
class FuncAliasDeclaration;
class OverDeclaration;
class FuncLiteralDeclaration;
class CtorDeclaration;
class PostBlitDeclaration;
class DtorDeclaration;
class StaticCtorDeclaration;
class StaticDtorDeclaration;
class SharedStaticCtorDeclaration;
class SharedStaticDtorDeclaration;
class InvariantDeclaration;
class UnitTestDeclaration;
class NewDeclaration;
class VarDeclaration;
class AttribDeclaration;
class VisibilityDeclaration;
class Package;
class Module;
class Import;
class Type;
class TypeTuple;
class WithStatement;
class LabelDsymbol;
class ScopeDsymbol;
class ForwardingScopeDsymbol;
class TemplateDeclaration;
class TemplateInstance;
class TemplateMixin;
class ForwardingAttribDeclaration;
class Nspace;
class EnumMember;
class WithScopeSymbol;
class ArrayScopeSymbol;
class SymbolDeclaration;
class Expression;
class ExpressionDsymbol;
class AliasAssign;
class OverloadSet;
class StaticAssert;
struct AA;
#ifdef IN_GCC
typedef union tree_node Symbol;
struct Symbol;
struct Ungag
unsigned oldgag;
Ungag(unsigned old) : oldgag(old) {}
~Ungag() { global.gag = oldgag; }
void dsymbolSemantic(Dsymbol *dsym, Scope *sc);
void semantic2(Dsymbol *dsym, Scope *sc);
void semantic3(Dsymbol *dsym, Scope* sc);
struct Visibility
enum Kind
none, // no access
Kind kind;
Package *pkg;
/* State of symbol in winding its way through the passes of the compiler
enum class PASS : uint8_t
initial, // 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
PASSinit, // initial state
PASSsemantic, // semantic() started
PASSsemanticdone, // semantic() done
PASSsemantic2, // semantic2() started
PASSsemantic2done, // semantic2() done
PASSsemantic3, // semantic3() started
PASSsemantic3done, // semantic3() done
PASSinline, // inline started
PASSinlinedone, // inline done
PASSobj // toObjFile() run
/* Flags for symbol search
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
TagNameSpace = 0x100, // search ImportC tag symbol table
struct FieldState
unsigned offset;
unsigned fieldOffset;
unsigned fieldSize;
unsigned fieldAlign;
unsigned bitOffset;
bool inFlight;
struct DsymbolAttributes;
class Dsymbol : public ASTNode
Identifier *ident;
Dsymbol *parent;
Symbol *csym; // symbol for code generator
Loc loc; // where defined
Scope *_scope; // !=NULL means context to use for semantic()
const utf8_t *prettystring;
DsymbolAttributes* atts;
bool errors; // this symbol failed to pass semantic()
PASS semanticRun;
unsigned short localNum; // perturb mangled name to avoid collisions with those in FuncDeclaration.localsymtab
static Dsymbol *create(Identifier *);
const char *toChars() const override;
DeprecatedDeclaration* depdecl();
CPPNamespaceDeclaration* cppnamespace();
UserAttributeDeclaration* userAttribDecl();
DeprecatedDeclaration* depdecl(DeprecatedDeclaration* dd);
CPPNamespaceDeclaration* cppnamespace(CPPNamespaceDeclaration* ns);
UserAttributeDeclaration* userAttribDecl(UserAttributeDeclaration* uad);
virtual const char *toPrettyCharsHelper(); // helper to print fully qualified (template) arguments
Loc getLoc();
const char *locToChars();
bool equals(const RootObject * const o) const override;
bool isAnonymous() const;
void error(const Loc &loc, const char *format, ...);
void error(const char *format, ...);
void deprecation(const Loc &loc, const char *format, ...);
void deprecation(const char *format, ...);
bool checkDeprecated(const Loc &loc, Scope *sc);
Module *getModule();
bool isCsymbol();
Module *getAccessModule();
Dsymbol *pastMixin();
Dsymbol *toParent();
Dsymbol *toParent2();
Dsymbol *toParentDecl();
Dsymbol *toParentLocal();
Dsymbol *toParentP(Dsymbol *p1, Dsymbol *p2 = NULL);
TemplateInstance *isInstantiated();
bool followInstantiationContext(Dsymbol *p1, Dsymbol *p2 = NULL);
TemplateInstance *isSpeculative();
Ungag ungagSpeculative();
// kludge for template.isSymbol()
DYNCAST dyncast() const override final { return DYNCAST_DSYMBOL; }
virtual Identifier *getIdent();
virtual const char *toPrettyChars(bool QualifyTypes = false);
virtual const char *kind() const;
virtual Dsymbol *toAlias(); // resolve real symbol
virtual Dsymbol *toAlias2();
virtual void addMember(Scope *sc, ScopeDsymbol *sds);
virtual void setScope(Scope *sc);
virtual void importAll(Scope *sc);
virtual Dsymbol *search(const Loc &loc, Identifier *ident, int flags = IgnoreNone);
virtual bool overloadInsert(Dsymbol *s);
virtual uinteger_t size(const Loc &loc);
virtual bool isforwardRef();
virtual AggregateDeclaration *isThis(); // is a 'this' required to access the member
virtual bool isExport() const; // is Dsymbol exported?
virtual bool isImportedSymbol() const; // is Dsymbol imported?
virtual bool isDeprecated() const; // is Dsymbol deprecated?
virtual bool isOverloadable() const;
virtual LabelDsymbol *isLabel(); // is this a LabelDsymbol?
AggregateDeclaration *isMember(); // is toParent() an AggregateDeclaration?
AggregateDeclaration *isMember2(); // is toParent2() an AggregateDeclaration?
AggregateDeclaration *isMemberDecl(); // is toParentDecl() an AggregateDeclaration?
AggregateDeclaration *isMemberLocal(); // is toParentLocal() an AggregateDeclaration?
ClassDeclaration *isClassMember(); // isMember() is a ClassDeclaration?
virtual Type *getType(); // is this a type?
virtual bool needThis(); // need a 'this' pointer?
virtual Visibility visible();
virtual Dsymbol *syntaxCopy(Dsymbol *s); // copy only syntax trees
virtual bool oneMember(Dsymbol **ps, Identifier *ident);
virtual void setFieldOffset(AggregateDeclaration *ad, FieldState& fieldState, bool isunion);
virtual bool hasPointers();
virtual bool hasStaticCtorOrDtor();
virtual void addLocalClass(ClassDeclarations *) { }
virtual void addObjcSymbols(ClassDeclarations *, ClassDeclarations *) { }
virtual void checkCtorConstInit() { }
virtual void addComment(const utf8_t *comment);
const utf8_t *comment(); // current value of comment
UnitTestDeclaration *ddocUnittest();
void ddocUnittest(UnitTestDeclaration *);
bool inNonRoot();
// Eliminate need for dynamic_cast
virtual Package *isPackage() { return NULL; }
virtual Module *isModule() { return NULL; }
virtual EnumMember *isEnumMember() { return NULL; }
virtual TemplateDeclaration *isTemplateDeclaration() { return NULL; }
virtual TemplateInstance *isTemplateInstance() { return NULL; }
virtual TemplateMixin *isTemplateMixin() { return NULL; }
virtual ForwardingAttribDeclaration *isForwardingAttribDeclaration() { return NULL; }
virtual Nspace *isNspace() { return NULL; }
virtual Declaration *isDeclaration() { return NULL; }
virtual StorageClassDeclaration *isStorageClassDeclaration(){ return NULL; }
virtual ExpressionDsymbol *isExpressionDsymbol() { return NULL; }
virtual AliasAssign *isAliasAssign() { return NULL; }
virtual ThisDeclaration *isThisDeclaration() { return NULL; }
virtual BitFieldDeclaration *isBitFieldDeclaration() { return NULL; }
virtual TypeInfoDeclaration *isTypeInfoDeclaration() { return NULL; }
virtual TupleDeclaration *isTupleDeclaration() { return NULL; }
virtual AliasDeclaration *isAliasDeclaration() { return NULL; }
virtual AggregateDeclaration *isAggregateDeclaration() { return NULL; }
virtual FuncDeclaration *isFuncDeclaration() { return NULL; }
virtual FuncAliasDeclaration *isFuncAliasDeclaration() { return NULL; }
virtual OverDeclaration *isOverDeclaration() { return NULL; }
virtual FuncLiteralDeclaration *isFuncLiteralDeclaration() { return NULL; }
virtual CtorDeclaration *isCtorDeclaration() { return NULL; }
virtual PostBlitDeclaration *isPostBlitDeclaration() { return NULL; }
virtual DtorDeclaration *isDtorDeclaration() { return NULL; }
virtual StaticCtorDeclaration *isStaticCtorDeclaration() { return NULL; }
virtual StaticDtorDeclaration *isStaticDtorDeclaration() { return NULL; }
virtual SharedStaticCtorDeclaration *isSharedStaticCtorDeclaration() { return NULL; }
virtual SharedStaticDtorDeclaration *isSharedStaticDtorDeclaration() { return NULL; }
virtual InvariantDeclaration *isInvariantDeclaration() { return NULL; }
virtual UnitTestDeclaration *isUnitTestDeclaration() { return NULL; }
virtual NewDeclaration *isNewDeclaration() { return NULL; }
virtual VarDeclaration *isVarDeclaration() { return NULL; }
virtual VersionSymbol *isVersionSymbol() { return NULL; }
virtual DebugSymbol *isDebugSymbol() { return NULL; }
virtual ClassDeclaration *isClassDeclaration() { return NULL; }
virtual StructDeclaration *isStructDeclaration() { return NULL; }
virtual UnionDeclaration *isUnionDeclaration() { return NULL; }
virtual InterfaceDeclaration *isInterfaceDeclaration() { return NULL; }
virtual ScopeDsymbol *isScopeDsymbol() { return NULL; }
virtual ForwardingScopeDsymbol *isForwardingScopeDsymbol() { return NULL; }
virtual WithScopeSymbol *isWithScopeSymbol() { return NULL; }
virtual ArrayScopeSymbol *isArrayScopeSymbol() { return NULL; }
virtual Import *isImport() { return NULL; }
virtual EnumDeclaration *isEnumDeclaration() { return NULL; }
virtual SymbolDeclaration *isSymbolDeclaration() { return NULL; }
virtual AttribDeclaration *isAttribDeclaration() { return NULL; }
virtual AnonDeclaration *isAnonDeclaration() { return NULL; }
virtual CPPNamespaceDeclaration *isCPPNamespaceDeclaration() { return NULL; }
virtual VisibilityDeclaration *isVisibilityDeclaration() { return NULL; }
virtual OverloadSet *isOverloadSet() { return NULL; }
virtual CompileDeclaration *isCompileDeclaration() { return NULL; }
virtual StaticAssert *isStaticAssert() { return NULL; }
void accept(Visitor *v) override { v->visit(this); }
// Dsymbol that generates a scope
class ScopeDsymbol : public Dsymbol
Dsymbols *members; // all Dsymbol's in this scope
DsymbolTable *symtab; // members[] sorted into table
unsigned endlinnum; // the linnumber of the statement after the scope (0 if unknown)
Dsymbols *importedScopes; // imported Dsymbol's
Visibility::Kind *visibilities; // array of `Visibility.Kind`, one for each import
BitArray accessiblePackages, privateAccessiblePackages;
ScopeDsymbol *syntaxCopy(Dsymbol *s) override;
Dsymbol *search(const Loc &loc, Identifier *ident, int flags = SearchLocalsOnly) override;
virtual void importScope(Dsymbol *s, Visibility visibility);
virtual bool isPackageAccessible(Package *p, Visibility visibility, int flags = 0);
bool isforwardRef() override final;
static void multiplyDefined(const Loc &loc, Dsymbol *s1, Dsymbol *s2);
const char *kind() const override;
FuncDeclaration *findGetMembers();
virtual Dsymbol *symtabInsert(Dsymbol *s);
virtual Dsymbol *symtabLookup(Dsymbol *s, Identifier *id);
bool hasStaticCtorOrDtor() override;
ScopeDsymbol *isScopeDsymbol() override final { return this; }
void accept(Visitor *v) override { v->visit(this); }
// With statement scope
class WithScopeSymbol final : public ScopeDsymbol
WithStatement *withstate;
Dsymbol *search(const Loc &loc, Identifier *ident, int flags = SearchLocalsOnly) override;
WithScopeSymbol *isWithScopeSymbol() override { return this; }
void accept(Visitor *v) override { v->visit(this); }
// Array Index/Slice scope
class ArrayScopeSymbol final : public ScopeDsymbol
RootObject *arrayContent;
Scope *sc;
Dsymbol *search(const Loc &loc, Identifier *ident, int flags = IgnoreNone) override;
ArrayScopeSymbol *isArrayScopeSymbol() override { return this; }
void accept(Visitor *v) override { v->visit(this); }
// Overload Sets
class OverloadSet final : public Dsymbol
Dsymbols a; // array of Dsymbols
void push(Dsymbol *s);
OverloadSet *isOverloadSet() override { return this; }
const char *kind() const override;
void accept(Visitor *v) override { v->visit(this); }
// Forwarding ScopeDsymbol
class ForwardingScopeDsymbol final : public ScopeDsymbol
Dsymbol *symtabInsert(Dsymbol *s) override;
Dsymbol *symtabLookup(Dsymbol *s, Identifier *id) override;
void importScope(Dsymbol *s, Visibility visibility) override;
const char *kind() const override;
ForwardingScopeDsymbol *isForwardingScopeDsymbol() override { return this; }
class ExpressionDsymbol final : public Dsymbol
Expression *exp;
ExpressionDsymbol *isExpressionDsymbol() override { return this; }
// Table of Dsymbol's
class DsymbolTable final : public RootObject
AA *tab;
// Look up Identifier. Return Dsymbol if found, NULL if not.
Dsymbol *lookup(Identifier const * const ident);
// Look for Dsymbol in table. If there, return it. If not, insert s and return that.
void update(Dsymbol *s);
// Insert Dsymbol in table. Return NULL if already there.
Dsymbol *insert(Dsymbol *s);
Dsymbol *insert(Identifier const * const ident, Dsymbol *s); // when ident and s are not the same
// Number of symbols in symbol table
size_t length() const;