[9131e54] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // Init.hpp -- |
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| 8 | // |
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| 9 | // Author : Aaron B. Moss |
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| 10 | // Created On : Fri May 10 10:30:00 2019 |
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| 11 | // Last Modified By : Aaron B. Moss |
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| 12 | // Created On : Fri May 10 10:30:00 2019 |
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| 13 | // Update Count : 1 |
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| 14 | // |
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| 15 | |
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| 16 | #pragma once |
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| 17 | |
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| 18 | #include <utility> // for move |
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| 19 | #include <vector> |
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| 20 | |
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| 21 | #include "ParseNode.hpp" |
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| 22 | #include "Node.hpp" // for ptr |
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| 23 | #include "Visitor.hpp" |
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| 24 | |
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| 25 | namespace ast { |
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| 26 | |
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| 27 | class Expr; |
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| 28 | class Stmt; |
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| 29 | |
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| 30 | /// List of designator (NameExpr, VariableExpr, and ConstantExpr) expressions that specify an |
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| 31 | /// object being initialized |
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| 32 | class Designation final : public ParseNode { |
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| 33 | public: |
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| 34 | std::vector<ptr<Expr>> designators; |
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| 35 | |
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| 36 | Designation( const CodeLocation& loc, std::vector<ptr<Expr>>&& ds = {} ) |
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| 37 | : ParseNode( loc ), designators( std::move(ds) ) {} |
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| 38 | |
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| 39 | Designation* accept( Visitor& v ) override { return v.visit( this ); } |
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| 40 | private: |
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| 41 | Designation* clone() const override { return new Designation{ *this }; } |
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| 42 | }; |
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| 43 | |
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| 44 | /// Object initializer base class |
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| 45 | class Init : public ParseNode { |
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| 46 | public: |
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| 47 | bool maybeConstructed; |
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| 48 | |
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| 49 | Init( const CodeLocation& loc, bool mc ) : ParseNode( loc ), maybeConstructed( mc ) {} |
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| 50 | |
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| 51 | virtual Init* accept( Visitor& v ) override = 0; |
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| 52 | private: |
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| 53 | virtual Init* clone() const override = 0; |
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| 54 | }; |
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| 55 | |
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| 56 | /// Initializer for a common object: `int x = 4` |
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| 57 | class SingleInit final : public Init { |
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| 58 | public: |
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| 59 | /// value to initialize to. Must be compile-time constant. |
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| 60 | ptr<Expr> value; |
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| 61 | |
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| 62 | SingleInit( const CodeLocation& loc, Expr* val, bool mc = false ) |
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| 63 | : Init( loc, mc ), value( val ) {} |
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| 64 | |
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| 65 | Init* accept( Visitor& v ) override { return v.visit( this ); } |
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| 66 | private: |
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| 67 | SingleInit* clone() const override { return new SingleInit{ *this }; } |
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| 68 | }; |
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| 69 | |
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| 70 | /// Initializer recursively composed of a list of initializers. |
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| 71 | /// Used to initialize an array or aggregate: `int a[] = { 1, 2, 3 }` |
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| 72 | class ListInit final : public Init { |
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| 73 | public: |
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| 74 | /// list of initializers |
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| 75 | std::vector<ptr<Init>> initializers; |
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| 76 | /// list of designators; order/length is consistent with initializers |
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| 77 | std::vector<ptr<Designation>> designations; |
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| 78 | |
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| 79 | ListInit( const CodeLocation& loc, std::vector<ptr<Init>>&& is, |
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| 80 | std::vector<ptr<Designation>>&& ds = {}, bool mc = false ); |
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| 81 | |
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| 82 | using iterator = std::vector<ptr<Init>>::iterator; |
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| 83 | using const_iterator = std::vector<ptr<Init>>::const_iterator; |
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| 84 | iterator begin() { return initializers.begin(); } |
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| 85 | iterator end() { return initializers.end(); } |
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| 86 | const_iterator begin() const { return initializers.begin(); } |
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| 87 | const_iterator end() const { return initializers.end(); } |
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| 88 | |
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| 89 | Init* accept( Visitor& v ) override { return v.visit( this ); } |
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| 90 | private: |
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| 91 | ListInit* clone() const override { return new ListInit{ *this }; } |
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| 92 | }; |
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| 93 | |
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| 94 | /// Either a constructor expression or a C-style initializer. |
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| 95 | /// Should not be necessary to create manually; instead set `maybeConstructed` true on `SingleInit` |
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| 96 | /// or `ListInit` if the object should be constructed. |
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| 97 | class ConstructorInit final : public Init { |
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| 98 | public: |
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| 99 | ptr<Stmt> ctor; |
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| 100 | ptr<Stmt> dtor; |
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| 101 | /// C-style initializer made up of SingleInit/ListInit nodes to use as a fallback if an |
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| 102 | /// appropriate constructor definition is not found by the resolver. |
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| 103 | ptr<Init> init; |
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| 104 | |
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| 105 | ConstructorInit( const CodeLocation& loc, Stmt* ctor, Stmt* dtor, Init* init ) |
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| 106 | : Init( loc, true ), ctor( ctor ), dtor( dtor ), init( init ) {} |
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| 107 | |
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| 108 | Init* accept( Visitor& v ) override { return v.visit( this ); } |
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| 109 | private: |
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| 110 | ConstructorInit* clone() const override { return new ConstructorInit{ *this }; } |
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| 111 | }; |
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| 112 | |
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| 113 | } |
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| 114 | |
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| 115 | // Local Variables: // |
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| 116 | // tab-width: 4 // |
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| 117 | // mode: c++ // |
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| 118 | // compile-command: "make install" // |
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| 119 | // End: // |
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