source: src/SynTree/Declaration.h @ aeb5d0d

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Declaration.h --
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Fri Dec 13 23:11:22 2019
// Update Count     : 157
//

#pragma once

#include <cassert>               // for assertf
#include <iosfwd>                // for ostream
#include <list>                  // for list
#include <unordered_map>         // for unordered_map
#include <string>                // for string, operator+, allocator, to_string

#include "BaseSyntaxNode.h"      // for BaseSyntaxNode
#include "Mutator.h"             // for Mutator
#include "LinkageSpec.h"         // for Spec, Cforall
#include "SynTree.h"             // for UniqueId
#include "SynTree/Type.h"        // for Type, Type::StorageClasses, Type::Fu...
#include "Visitor.h"             // for Visitor

class AsmStmt;
class Attribute;
class CompoundStmt;
class ConstantExpr;
class Expression;
class Initializer;
class TypeDecl;

class Declaration : public BaseSyntaxNode {
  public:
        std::string name;
        LinkageSpec::Spec linkage;
        bool extension = false;

        Declaration( const std::string & name, Type::StorageClasses scs, LinkageSpec::Spec linkage );
        Declaration( const Declaration & other );
        virtual ~Declaration();

        const std::string & get_name() const { return name; }
        void set_name( std::string newValue ) { name = newValue; }

        Type::StorageClasses get_storageClasses() const { return storageClasses; }

        LinkageSpec::Spec get_linkage() const { return linkage; }
        void set_linkage( LinkageSpec::Spec newValue ) { linkage = newValue; }

        UniqueId get_uniqueId() const { return uniqueId; }

        bool get_extension() const { return extension; }
        Declaration * set_extension( bool exten ) { extension = exten; return this; }

        void fixUniqueId( void );
        virtual Declaration * clone() const override = 0;
        virtual void accept( Visitor & v ) override = 0;
        virtual void accept( Visitor & v ) const override = 0;
        virtual Declaration * acceptMutator( Mutator & m ) override = 0;
        virtual void print( std::ostream & os, Indenter indent = {} ) const override = 0;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const = 0;

        UniqueId uniqueId;
        Type::StorageClasses storageClasses;
  private:
};

class DeclarationWithType : public Declaration {
  public:
        // this represents the type with all types and typedefs expanded it is generated by SymTab::Validate::Pass2
        std::string mangleName;
        // need to remember the scope level at which the variable was declared, so that shadowed identifiers can be accessed
        int scopeLevel = 0;

        Expression * asmName;
        std::list< Attribute * > attributes;
        bool isDeleted = false;

        DeclarationWithType( const std::string & name, Type::StorageClasses scs, LinkageSpec::Spec linkage, const std::list< Attribute * > & attributes, Type::FuncSpecifiers fs );
        DeclarationWithType( const DeclarationWithType & other );
        virtual ~DeclarationWithType();

        std::string get_mangleName() const { return mangleName; }
        DeclarationWithType * set_mangleName( std::string newValue ) { mangleName = newValue; return this; }

        std::string get_scopedMangleName() const { return mangleName + "_" + std::to_string(scopeLevel); }

        int get_scopeLevel() const { return scopeLevel; }
        DeclarationWithType * set_scopeLevel( int newValue ) { scopeLevel = newValue; return this; }

        Expression * get_asmName() const { return asmName; }
        DeclarationWithType * set_asmName( Expression * newValue ) { asmName = newValue; return this; }

        std::list< Attribute * >& get_attributes() { return attributes; }
        const std::list< Attribute * >& get_attributes() const { return attributes; }

        Type::FuncSpecifiers get_funcSpec() const { return fs; }
        //void set_functionSpecifiers( Type::FuncSpecifiers newValue ) { fs = newValue; }

        virtual DeclarationWithType * clone() const override = 0;
        virtual DeclarationWithType * acceptMutator( Mutator & m )  override = 0;

        virtual Type * get_type() const = 0;
        virtual void set_type(Type *) = 0;

  private:
        Type::FuncSpecifiers fs;
};

class ObjectDecl : public DeclarationWithType {
        typedef DeclarationWithType Parent;
  public:
        Type * type;
        Initializer * init;
        Expression * bitfieldWidth;

        ObjectDecl( const std::string & name, Type::StorageClasses scs, LinkageSpec::Spec linkage, Expression * bitfieldWidth, Type * type, Initializer * init,
                                const std::list< Attribute * > attributes = std::list< Attribute * >(), Type::FuncSpecifiers fs = Type::FuncSpecifiers() );
        ObjectDecl( const ObjectDecl & other );
        virtual ~ObjectDecl();

        virtual Type * get_type() const override { return type; }
        virtual void set_type(Type * newType) override { type = newType; }

        Initializer * get_init() const { return init; }
        void set_init( Initializer * newValue ) { init = newValue; }

        Expression * get_bitfieldWidth() const { return bitfieldWidth; }
        void set_bitfieldWidth( Expression * newValue ) { bitfieldWidth = newValue; }

        static ObjectDecl * newObject( const std::string & name, Type * type, Initializer * init );

        virtual ObjectDecl * clone() const override { return new ObjectDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual DeclarationWithType * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override;
};

class FunctionDecl : public DeclarationWithType {
        typedef DeclarationWithType Parent;
  public:
        FunctionType * type;
        CompoundStmt * statements;
        std::list< Expression * > withExprs;

        FunctionDecl( const std::string & name, Type::StorageClasses scs, LinkageSpec::Spec linkage, FunctionType * type, CompoundStmt * statements,
                                  const std::list< Attribute * > attributes = std::list< Attribute * >(), Type::FuncSpecifiers fs = Type::FuncSpecifiers() );
        FunctionDecl( const FunctionDecl & other );
        virtual ~FunctionDecl();

        virtual Type * get_type() const override { return type; }
        virtual void set_type(Type * t) override { type = strict_dynamic_cast< FunctionType* >( t ); }

        FunctionType * get_functionType() const { return type; }
        void set_functionType( FunctionType * newValue ) { type = newValue; }
        CompoundStmt * get_statements() const { return statements; }
        void set_statements( CompoundStmt * newValue ) { statements = newValue; }
        bool has_body() const { return NULL != statements; }

        static FunctionDecl * newFunction( const std::string & name, FunctionType * type, CompoundStmt * statements );

        virtual FunctionDecl * clone() const override { return new FunctionDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual DeclarationWithType * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override;
};

class NamedTypeDecl : public Declaration {
        typedef Declaration Parent;
  public:
        Type * base;
        std::list< TypeDecl * > parameters;
        std::list< DeclarationWithType * > assertions;

        NamedTypeDecl( const std::string & name, Type::StorageClasses scs, Type * type );
        NamedTypeDecl( const NamedTypeDecl & other );
        virtual ~NamedTypeDecl();

        Type * get_base() const { return base; }
        void set_base( Type * newValue ) { base = newValue; }
        std::list< TypeDecl* > & get_parameters() { return parameters; }
        std::list< DeclarationWithType * >& get_assertions() { return assertions; }

        virtual const char * typeString() const = 0;

        virtual NamedTypeDecl * clone() const override = 0;
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override;
};

class TypeDecl : public NamedTypeDecl {
        typedef NamedTypeDecl Parent;
  public:
        enum Kind { Dtype, Otype, Ftype, Ttype, NUMBER_OF_KINDS };

        Kind kind;
        bool sized;
        Type * init;

        /// Data extracted from a type decl
        struct Data {
                Kind kind;
                bool isComplete;

                Data() : kind( NUMBER_OF_KINDS ), isComplete( false ) {}
                Data( const TypeDecl * typeDecl ) : Data( typeDecl->get_kind(), typeDecl->isComplete() ) {}
                Data( Kind kind, bool isComplete ) : kind( kind ), isComplete( isComplete ) {}
                Data( const Data & d1, const Data & d2 )
                        : kind( d1.kind ), isComplete( d1.isComplete || d2.isComplete ) {}

                bool operator==( const Data & other ) const { return kind == other.kind && isComplete == other.isComplete; }
                bool operator!=( const Data & other ) const { return !(*this == other);}
        };

        TypeDecl( const std::string & name, Type::StorageClasses scs, Type * type, Kind kind, bool sized, Type * init = nullptr );
        TypeDecl( const TypeDecl & other );
        virtual ~TypeDecl();

        Kind get_kind() const { return kind; }

        Type * get_init() const { return init; }
        TypeDecl * set_init( Type * newValue ) { init = newValue; return this; }

        bool isComplete() const { return sized; }
        bool get_sized() const { return sized; }
        TypeDecl * set_sized( bool newValue ) { sized = newValue; return this; }

        virtual const char * typeString() const override;
        virtual const char * genTypeString() const;

        virtual TypeDecl * clone() const override { return new TypeDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
};

class TypedefDecl : public NamedTypeDecl {
        typedef NamedTypeDecl Parent;
  public:
        TypedefDecl( const std::string & name, CodeLocation location, Type::StorageClasses scs, Type * type, LinkageSpec::Spec spec = LinkageSpec::Cforall )
                : Parent( name, scs, type ) { set_linkage( spec ); this->location = location; }

        TypedefDecl( const TypedefDecl & other ) : Parent( other ) {}

        virtual const char * typeString() const override;

        virtual TypedefDecl * clone() const override { return new TypedefDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
  private:
};

class AggregateDecl : public Declaration {
        typedef Declaration Parent;
  public:
        enum Aggregate { Struct, Union, Enum, Exception, Trait, Generator, Coroutine, Monitor, Thread, NoAggregate };
        static const char * aggrString( Aggregate aggr );

        std::list<Declaration*> members;
        std::list<TypeDecl*> parameters;
        bool body;
        std::list< Attribute * > attributes;
        AggregateDecl * parent = nullptr;

        AggregateDecl( const std::string & name, const std::list< Attribute * > & attributes = std::list< class Attribute * >(), LinkageSpec::Spec linkage = LinkageSpec::Cforall );
        AggregateDecl( const AggregateDecl & other );
        virtual ~AggregateDecl();

        std::list<Declaration*>& get_members() { return members; }
        std::list<TypeDecl*>& get_parameters() { return parameters; }

        std::list< Attribute * >& get_attributes() { return attributes; }
        const std::list< Attribute * >& get_attributes() const { return attributes; }

        bool has_body() const { return body; }
        AggregateDecl * set_body( bool body ) { AggregateDecl::body = body; return this; }

        virtual void print( std::ostream & os, Indenter indent = {} ) const override final;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override;
  protected:
        virtual const char * typeString() const = 0;
};

class StructDecl : public AggregateDecl {
        typedef AggregateDecl Parent;
  public:
        StructDecl( const std::string & name, Aggregate kind = Struct, const std::list< Attribute * > & attributes = std::list< class Attribute * >(), LinkageSpec::Spec linkage = LinkageSpec::Cforall ) : Parent( name, attributes, linkage ), kind( kind ) {}
        StructDecl( const StructDecl & other ) : Parent( other ), kind( other.kind ) {}

        bool is_coroutine() { return kind == Coroutine; }
        bool is_monitor() { return kind == Monitor; }
        bool is_thread() { return kind == Thread; }

        virtual StructDecl * clone() const override { return new StructDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        Aggregate kind;
  private:
        virtual const char * typeString() const override;
};

class UnionDecl : public AggregateDecl {
        typedef AggregateDecl Parent;
  public:
        UnionDecl( const std::string & name, const std::list< Attribute * > & attributes = std::list< class Attribute * >(), LinkageSpec::Spec linkage = LinkageSpec::Cforall ) : Parent( name, attributes, linkage ) {}
        UnionDecl( const UnionDecl & other ) : Parent( other ) {}

        virtual UnionDecl * clone() const override { return new UnionDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
  private:
        virtual const char * typeString() const override;
};

class EnumDecl : public AggregateDecl {
        typedef AggregateDecl Parent;
  public:
        EnumDecl( const std::string & name, const std::list< Attribute * > & attributes = std::list< class Attribute * >(), LinkageSpec::Spec linkage = LinkageSpec::Cforall ) : Parent( name, attributes, linkage ) {}
        EnumDecl( const EnumDecl & other ) : Parent( other ) {}

        bool valueOf( Declaration * enumerator, long long int & value );

        virtual EnumDecl * clone() const override { return new EnumDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
  private:
        std::unordered_map< std::string, long long int > enumValues;
        virtual const char * typeString() const override;
};

class TraitDecl : public AggregateDecl {
        typedef AggregateDecl Parent;
  public:
        TraitDecl( const std::string & name, const std::list< Attribute * > & attributes, LinkageSpec::Spec linkage ) : Parent( name, attributes, linkage ) {
                assertf( attributes.empty(), "attribute unsupported for traits" );
        }
        TraitDecl( const TraitDecl & other ) : Parent( other ) {}

        virtual TraitDecl * clone() const override { return new TraitDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
  private:
        virtual const char * typeString() const override;
};

class WithStmt : public Declaration {
public:
        std::list< Expression * > exprs;
        Statement * stmt;

        WithStmt( const std::list< Expression * > & exprs, Statement * stmt );
        WithStmt( const WithStmt & other );
        virtual ~WithStmt();

        virtual WithStmt * clone() const override { return new WithStmt( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual Declaration * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override { print(os, indent); }
};

class AsmDecl : public Declaration {
  public:
        AsmStmt * stmt;

        AsmDecl( AsmStmt * stmt );
        AsmDecl( const AsmDecl & other );
        virtual ~AsmDecl();

        AsmStmt * get_stmt() { return stmt; }
        void set_stmt( AsmStmt * newValue ) { stmt = newValue; }

        virtual AsmDecl * clone() const override { return new AsmDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual AsmDecl * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override;
};

class StaticAssertDecl : public Declaration {
public:
        Expression * condition;
        ConstantExpr * message;   // string literal

        StaticAssertDecl( Expression * condition, ConstantExpr * message );
        StaticAssertDecl( const StaticAssertDecl & other );
        virtual ~StaticAssertDecl();

        virtual StaticAssertDecl * clone() const override { return new StaticAssertDecl( *this ); }
        virtual void accept( Visitor & v ) override { v.visit( this ); }
        virtual void accept( Visitor & v ) const override { v.visit( this ); }
        virtual StaticAssertDecl * acceptMutator( Mutator & m )  override { return m.mutate( this ); }
        virtual void print( std::ostream & os, Indenter indent = {} ) const override;
        virtual void printShort( std::ostream & os, Indenter indent = {} ) const override;
};

std::ostream & operator<<( std::ostream & os, const TypeDecl::Data & data );

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //