source: src/SynTree/Initializer.h @ e4d829b

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since e4d829b was e4d829b, checked in by Rob Schluntz <rschlunt@…>, 4 years ago

major effort on designations, works in many cases

  • Property mode set to 100644
File size: 5.4 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// Initializer.h --
8//
9// Author           : Richard C. Bilson
10// Created On       : Mon May 18 07:44:20 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Thu Mar 23 16:12:42 2017
13// Update Count     : 20
14//
15
16#ifndef INITIALIZER_H
17#define INITIALIZER_H
18
19#include <cassert>
20
21#include "BaseSyntaxNode.h"
22#include "Mutator.h"
23#include "SynTree.h"
24#include "Type.h"
25#include "Visitor.h"
26
27// Designation: list of designator (NameExpr, VariableExpr, and ConstantExpr) expressions that specify an object being initialized.
28class Designation : public BaseSyntaxNode {
29public:
30        Designation( const std::list< Expression * > & designators );
31        Designation( const Designation & other );
32        virtual ~Designation();
33
34        std::list< Expression * > & get_designators() { return designators; }
35
36        virtual Designation * clone() const { return new Designation( *this ); };
37        virtual void accept( Visitor &v ) { v.visit( this ); }
38        virtual Designation * acceptMutator( Mutator &m ) { return m.mutate( this ); }
39        virtual void print( std::ostream &os, int indent = 0 ) const;
40private:
41        std::list< Expression * > designators;
42};
43
44const std::list<Designation *> noDesignators;
45
46// Initializer: base class for object initializers (provide default values)
47class Initializer : public BaseSyntaxNode {
48  public:
49        Initializer( bool maybeConstructed );
50        Initializer( const Initializer & other );
51        virtual ~Initializer();
52
53        bool get_maybeConstructed() { return maybeConstructed; }
54
55        virtual Initializer *clone() const = 0;
56        virtual void accept( Visitor &v ) = 0;
57        virtual Initializer *acceptMutator( Mutator &m ) = 0;
58        virtual void print( std::ostream &os, int indent = 0 ) const = 0;
59  private:
60        bool maybeConstructed;
61};
62
63// SingleInit represents an initializer for a common object (e.g., int x = 4)
64class SingleInit : public Initializer {
65  public:
66        SingleInit( Expression *value, bool maybeConstructed = false );
67        SingleInit( const SingleInit &other );
68        virtual ~SingleInit();
69
70        Expression *get_value() { return value; }
71        void set_value( Expression *newValue ) { value = newValue; }
72
73        virtual SingleInit *clone() const { return new SingleInit( *this); }
74        virtual void accept( Visitor &v ) { v.visit( this ); }
75        virtual Initializer *acceptMutator( Mutator &m ) { return m.mutate( this ); }
76        virtual void print( std::ostream &os, int indent = 0 ) const;
77  private:
78        //Constant *value;
79        Expression *value;      // has to be a compile-time constant
80};
81
82// ListInit represents an initializer that is composed recursively of a list of initializers; this is used to initialize
83// an array or aggregate
84class ListInit : public Initializer {
85  public:
86        ListInit( const std::list<Initializer*> &initializers,
87                          const std::list<Designation *> &designators = {}, bool maybeConstructed = false );
88        ListInit( const ListInit & other );
89        virtual ~ListInit();
90
91        std::list<Designation *> & get_designations() { return designations; }
92        std::list<Initializer *> & get_initializers() { return initializers; }
93
94        typedef std::list<Initializer*>::iterator iterator;
95        typedef std::list<Initializer*>::const_iterator const_iterator;
96        iterator begin() { return initializers.begin(); }
97        iterator end() { return initializers.end(); }
98        const_iterator begin() const { return initializers.begin(); }
99        const_iterator end() const { return initializers.end(); }
100
101        virtual ListInit *clone() const { return new ListInit( *this ); }
102        virtual void accept( Visitor &v ) { v.visit( this ); }
103        virtual Initializer *acceptMutator( Mutator &m ) { return m.mutate( this ); }
104        virtual void print( std::ostream &os, int indent = 0 ) const;
105  private:
106        std::list<Initializer *> initializers;  // order *is* important
107        std::list<Designation *> designations;  // order/length is consistent with initializers
108};
109
110// ConstructorInit represents an initializer that is either a constructor expression or
111// a C-style initializer.
112// It should not be necessary to create ConstructorInit nodes manually. Instead, set maybeConstructed
113// to true on SingleInit or ListInit constructors if object should be constructed.
114class ConstructorInit : public Initializer {
115  public:
116        ConstructorInit( Statement * ctor, Statement * dtor, Initializer * init );
117        ConstructorInit( const ConstructorInit &other );
118        virtual ~ConstructorInit();
119
120        void set_ctor( Statement * newValue ) { ctor = newValue; }
121        Statement * get_ctor() const { return ctor; }
122        void set_dtor( Statement * newValue ) { dtor = newValue; }
123        Statement * get_dtor() const { return dtor; }
124        void set_init( Initializer * newValue ) { init = newValue; }
125        Initializer * get_init() const { return init; }
126
127        ConstructorInit *clone() const { return new ConstructorInit( *this ); }
128        virtual void accept( Visitor &v ) { v.visit( this ); }
129        virtual Initializer *acceptMutator( Mutator &m ) { return m.mutate( this ); }
130        virtual void print( std::ostream &os, int indent = 0 ) const;
131
132  private:
133        Statement * ctor;
134        Statement * dtor;
135        // C-style initializer made up of SingleInit and ListInit nodes to use as a fallback
136        // if an appropriate constructor definition is not found by the resolver
137        Initializer * init;
138};
139
140std::ostream & operator<<( std::ostream & out, const Initializer * init );
141std::ostream & operator<<( std::ostream & out, const Designation * des );
142
143#endif // INITIALIZER_H
144
145// Local Variables: //
146// tab-width: 4 //
147// mode: c++ //
148// compile-command: "make install" //
149// End: //
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