[2bb4a01] | 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 | // Stmt.hpp --
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| 8 | //
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| 9 | // Author : Aaron B. Moss
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[1e97287] | 10 | // Created On : Wed May 8 13:00:00 2019
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| 11 | // Last Modified By : Andrew Beach
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[675d816] | 12 | // Last Modified On : Fri May 17 12:45:00 2019
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| 13 | // Update Count : 5
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[2bb4a01] | 14 | //
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| 15 |
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| 16 | #pragma once
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| 17 |
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| 18 | #include <list>
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| 19 | #include <utility> // for move
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| 20 | #include <vector>
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| 21 |
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| 22 | #include "Label.hpp"
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| 23 | #include "Node.hpp" // for node, ptr
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| 24 | #include "ParseNode.hpp"
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| 25 | #include "Visitor.hpp"
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| 26 | #include "Common/CodeLocation.h"
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| 27 |
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[f3cc5b6] | 28 | // Must be included in *all* AST classes; should be #undef'd at the end of the file
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[99da267] | 29 | #define MUTATE_FRIEND \
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| 30 | template<typename node_t> friend node_t * mutate(const node_t * node); \
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| 31 | template<typename node_t> friend node_t * shallowCopy(const node_t * node);
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[f3cc5b6] | 32 |
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[2bb4a01] | 33 | namespace ast {
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| 34 |
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| 35 | class Expr;
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| 36 |
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| 37 | /// Base statement node
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| 38 | class Stmt : public ParseNode {
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| 39 | public:
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| 40 | std::vector<Label> labels;
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| 41 |
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[f3cc5b6] | 42 | Stmt( const CodeLocation & loc, std::vector<Label> && labels = {} )
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[2bb4a01] | 43 | : ParseNode(loc), labels(std::move(labels)) {}
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| 44 |
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| 45 | Stmt(const Stmt& o) : ParseNode(o), labels(o.labels) {}
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| 46 |
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[f3cc5b6] | 47 | const Stmt * accept( Visitor & v ) const override = 0;
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[2bb4a01] | 48 | private:
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[f3cc5b6] | 49 | Stmt * clone() const override = 0;
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| 50 | MUTATE_FRIEND
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[2bb4a01] | 51 | };
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| 52 |
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| 53 | /// Compound statement `{ ... }`
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| 54 | class CompoundStmt final : public Stmt {
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| 55 | public:
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| 56 | std::list<ptr<Stmt>> kids;
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| 57 |
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[d66e7b7] | 58 | CompoundStmt(const CodeLocation & loc, std::list<ptr<Stmt>> && ks = {},
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| 59 | std::vector<Label>&& labels = {} )
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| 60 | : Stmt(loc, std::move(labels)), kids(std::move(ks)) {}
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[2bb4a01] | 61 |
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| 62 | CompoundStmt( const CompoundStmt& o );
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| 63 | CompoundStmt( CompoundStmt&& o ) = default;
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| 64 |
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[b8524ca] | 65 | void push_back( const Stmt * s ) { kids.emplace_back( s ); }
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| 66 | void push_front( const Stmt * s ) { kids.emplace_front( s ); }
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[2bb4a01] | 67 |
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[f3cc5b6] | 68 | const CompoundStmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[2bb4a01] | 69 | private:
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[f3cc5b6] | 70 | CompoundStmt * clone() const override { return new CompoundStmt{ *this }; }
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| 71 | MUTATE_FRIEND
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[2bb4a01] | 72 | };
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| 73 |
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| 74 | /// Empty statment `;`
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| 75 | class NullStmt final : public Stmt {
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| 76 | public:
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[f3cc5b6] | 77 | NullStmt( const CodeLocation & loc, std::vector<Label> && labels = {} )
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[2bb4a01] | 78 | : Stmt(loc, std::move(labels)) {}
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| 79 |
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[f3cc5b6] | 80 | const NullStmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[2bb4a01] | 81 | private:
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[f3cc5b6] | 82 | NullStmt * clone() const override { return new NullStmt{ *this }; }
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| 83 | MUTATE_FRIEND
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[2bb4a01] | 84 | };
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| 85 |
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| 86 | /// Expression wrapped by statement
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| 87 | class ExprStmt final : public Stmt {
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| 88 | public:
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| 89 | ptr<Expr> expr;
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| 90 |
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[6f8e87d] | 91 | ExprStmt( const CodeLocation& loc, const Expr* e, std::vector<Label>&& labels = {} )
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| 92 | : Stmt(loc, std::move(labels)), expr(e) {}
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[2bb4a01] | 93 |
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[f3cc5b6] | 94 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[2bb4a01] | 95 | private:
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[23f99e1] | 96 | ExprStmt * clone() const override { return new ExprStmt{ *this }; }
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[f3cc5b6] | 97 | MUTATE_FRIEND
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[2bb4a01] | 98 | };
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| 99 |
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[0f740d6] | 100 | /// Assembly statement `asm ... ( "..." : ... )`
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[1e97287] | 101 | class AsmStmt final : public Stmt {
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| 102 | public:
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| 103 | bool isVolatile;
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| 104 | ptr<Expr> instruction;
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| 105 | std::vector<ptr<Expr>> output, input;
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| 106 | std::vector<ptr<ConstantExpr>> clobber;
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| 107 | std::vector<Label> gotoLabels;
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| 108 |
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[f3cc5b6] | 109 | AsmStmt( const CodeLocation & loc, bool isVolatile, const Expr * instruction,
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| 110 | std::vector<ptr<Expr>> && output, std::vector<ptr<Expr>> && input,
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| 111 | std::vector<ptr<ConstantExpr>> && clobber, std::vector<Label> && gotoLabels,
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| 112 | std::vector<Label> && labels = {})
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[1e97287] | 113 | : Stmt(loc, std::move(labels)), isVolatile(isVolatile), instruction(instruction),
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| 114 | output(std::move(output)), input(std::move(input)), clobber(std::move(clobber)),
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| 115 | gotoLabels(std::move(gotoLabels)) {}
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| 116 |
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[f3cc5b6] | 117 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 118 | private:
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[f3cc5b6] | 119 | AsmStmt * clone() const override { return new AsmStmt{ *this }; }
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| 120 | MUTATE_FRIEND
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[1e97287] | 121 | };
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| 122 |
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[0f740d6] | 123 | /// C-preprocessor directive `#...`
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[1e97287] | 124 | class DirectiveStmt final : public Stmt {
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| 125 | public:
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| 126 | std::string directive;
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| 127 |
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[f3cc5b6] | 128 | DirectiveStmt( const CodeLocation & loc, const std::string & directive,
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| 129 | std::vector<Label> && labels = {} )
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[1e97287] | 130 | : Stmt(loc, std::move(labels)), directive(directive) {}
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| 131 |
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[f3cc5b6] | 132 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 133 | private:
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[f3cc5b6] | 134 | DirectiveStmt * clone() const override { return new DirectiveStmt{ *this }; }
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| 135 | MUTATE_FRIEND
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[1e97287] | 136 | };
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| 137 |
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[0f740d6] | 138 | /// If conditional statement `if (...) ... else ...`
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[1e97287] | 139 | class IfStmt final : public Stmt {
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| 140 | public:
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| 141 | ptr<Expr> cond;
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| 142 | ptr<Stmt> thenPart;
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| 143 | ptr<Stmt> elsePart;
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| 144 | std::vector<ptr<Stmt>> inits;
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| 145 |
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[f3cc5b6] | 146 | IfStmt( const CodeLocation & loc, const Expr * cond, const Stmt * thenPart,
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[c1ed2ee] | 147 | const Stmt * elsePart = nullptr, std::vector<ptr<Stmt>> && inits = {},
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[f3cc5b6] | 148 | std::vector<Label> && labels = {} )
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[1e97287] | 149 | : Stmt(loc, std::move(labels)), cond(cond), thenPart(thenPart), elsePart(elsePart),
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| 150 | inits(std::move(inits)) {}
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| 151 |
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[f3cc5b6] | 152 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 153 | private:
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[f3cc5b6] | 154 | IfStmt * clone() const override { return new IfStmt{ *this }; }
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| 155 | MUTATE_FRIEND
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[1e97287] | 156 | };
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| 157 |
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[0f740d6] | 158 | /// Switch or choose conditional statement `switch (...) { ... }`
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[1e97287] | 159 | class SwitchStmt final : public Stmt {
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| 160 | public:
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| 161 | ptr<Expr> cond;
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| 162 | std::vector<ptr<Stmt>> stmts;
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| 163 |
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[f3cc5b6] | 164 | SwitchStmt( const CodeLocation & loc, const Expr * cond, std::vector<ptr<Stmt>> && stmts,
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| 165 | std::vector<Label> && labels = {} )
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[1e97287] | 166 | : Stmt(loc, std::move(labels)), cond(cond), stmts(std::move(stmts)) {}
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| 167 |
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[f3cc5b6] | 168 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 169 | private:
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[f3cc5b6] | 170 | SwitchStmt * clone() const override { return new SwitchStmt{ *this }; }
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| 171 | MUTATE_FRIEND
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[1e97287] | 172 | };
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| 173 |
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[0f740d6] | 174 | /// Case label `case ...:` `default:`
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[1e97287] | 175 | class CaseStmt final : public Stmt {
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| 176 | public:
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[b8ab91a] | 177 | /// Null for the default label.
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[1e97287] | 178 | ptr<Expr> cond;
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| 179 | std::vector<ptr<Stmt>> stmts;
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| 180 |
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[f3cc5b6] | 181 | CaseStmt( const CodeLocation & loc, const Expr * cond, std::vector<ptr<Stmt>> && stmts,
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| 182 | std::vector<Label> && labels = {} )
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| 183 | : Stmt(loc, std::move(labels)), cond(cond), stmts(std::move(stmts)) {}
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[1e97287] | 184 |
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[675d816] | 185 | bool isDefault() const { return !cond; }
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[1e97287] | 186 |
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[f3cc5b6] | 187 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 188 | private:
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[f3cc5b6] | 189 | CaseStmt * clone() const override { return new CaseStmt{ *this }; }
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| 190 | MUTATE_FRIEND
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[1e97287] | 191 | };
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| 192 |
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[0f740d6] | 193 | /// While loop `while (...) ...` `do ... while (...);
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[1e97287] | 194 | class WhileStmt final : public Stmt {
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| 195 | public:
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| 196 | ptr<Expr> cond;
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| 197 | ptr<Stmt> body;
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| 198 | std::vector<ptr<Stmt>> inits;
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| 199 | bool isDoWhile;
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| 200 |
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[f3cc5b6] | 201 | WhileStmt( const CodeLocation & loc, const Expr * cond, const Stmt * body,
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| 202 | std::vector<ptr<Stmt>> && inits, bool isDoWhile = false, std::vector<Label> && labels = {} )
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[1e97287] | 203 | : Stmt(loc, std::move(labels)), cond(cond), body(body), inits(std::move(inits)),
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| 204 | isDoWhile(isDoWhile) {}
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| 205 |
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[f3cc5b6] | 206 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 207 | private:
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[f3cc5b6] | 208 | WhileStmt * clone() const override { return new WhileStmt{ *this }; }
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| 209 | MUTATE_FRIEND
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[1e97287] | 210 | };
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| 211 |
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[0f740d6] | 212 | /// For loop `for (... ; ... ; ...) ...`
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[1e97287] | 213 | class ForStmt final : public Stmt {
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| 214 | public:
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| 215 | std::vector<ptr<Stmt>> inits;
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| 216 | ptr<Expr> cond;
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[8a5530c] | 217 | ptr<Expr> inc;
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[1e97287] | 218 | ptr<Stmt> body;
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| 219 |
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[f3cc5b6] | 220 | ForStmt( const CodeLocation & loc, std::vector<ptr<Stmt>> && inits, const Expr * cond,
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| 221 | const Expr * inc, const Stmt * body, std::vector<Label> && labels = {} )
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[8a5530c] | 222 | : Stmt(loc, std::move(labels)), inits(std::move(inits)), cond(cond), inc(inc),
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[1e97287] | 223 | body(body) {}
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| 224 |
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[f3cc5b6] | 225 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 226 | private:
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[f3cc5b6] | 227 | ForStmt * clone() const override { return new ForStmt{ *this }; }
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| 228 | MUTATE_FRIEND
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[1e97287] | 229 | };
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| 230 |
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[0f740d6] | 231 | /// Branch control flow statement `goto ...` `break` `continue` `fallthru`
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[1e97287] | 232 | class BranchStmt final : public Stmt {
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| 233 | public:
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| 234 | enum Kind { Goto, Break, Continue, FallThrough, FallThroughDefault };
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| 235 | static constexpr size_t kindEnd = 1 + (size_t)FallThroughDefault;
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| 236 |
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| 237 | const Label originalTarget;
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| 238 | Label target;
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| 239 | ptr<Expr> computedTarget;
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| 240 | Kind kind;
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| 241 |
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[f3cc5b6] | 242 | BranchStmt( const CodeLocation & loc, Kind kind, Label target,
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| 243 | std::vector<Label> && labels = {} );
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| 244 | BranchStmt( const CodeLocation & loc, const Expr * computedTarget,
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| 245 | std::vector<Label> && labels = {} )
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[1e97287] | 246 | : Stmt(loc, std::move(labels)), originalTarget(loc), target(loc),
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| 247 | computedTarget(computedTarget), kind(Goto) {}
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| 248 |
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[94b1f718] | 249 | const char * kindName() const { return kindNames[kind]; }
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[1e97287] | 250 |
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[f3cc5b6] | 251 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 252 | private:
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[f3cc5b6] | 253 | BranchStmt * clone() const override { return new BranchStmt{ *this }; }
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| 254 | MUTATE_FRIEND
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[8a5530c] | 255 |
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[1e97287] | 256 | static const char * kindNames[kindEnd];
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| 257 | };
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| 258 |
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[0f740d6] | 259 | /// Return statement `return ...`
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[1e97287] | 260 | class ReturnStmt final : public Stmt {
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| 261 | public:
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| 262 | ptr<Expr> expr;
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| 263 |
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[f3cc5b6] | 264 | ReturnStmt( const CodeLocation & loc, const Expr * expr, std::vector<Label> && labels = {} )
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[1e97287] | 265 | : Stmt(loc, std::move(labels)), expr(expr) {}
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| 266 |
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[f3cc5b6] | 267 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 268 | private:
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[f3cc5b6] | 269 | ReturnStmt * clone() const override { return new ReturnStmt{ *this }; }
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| 270 | MUTATE_FRIEND
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[1e97287] | 271 | };
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| 272 |
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[6f4b7f2] | 273 | /// Kind of exception
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| 274 | enum ExceptionKind { Terminate, Resume };
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| 275 |
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[0f740d6] | 276 | /// Throw statement `throw ...`
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[1e97287] | 277 | class ThrowStmt final : public Stmt {
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| 278 | public:
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| 279 | ptr<Expr> expr;
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| 280 | ptr<Expr> target;
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[6f4b7f2] | 281 | ExceptionKind kind;
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[1e97287] | 282 |
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[a7d50b6] | 283 | ThrowStmt(
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[6f4b7f2] | 284 | const CodeLocation & loc, ExceptionKind kind, const Expr * expr, const Expr * target,
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[f3cc5b6] | 285 | std::vector<Label> && labels = {} )
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[1e97287] | 286 | : Stmt(loc, std::move(labels)), expr(expr), target(target), kind(kind) {}
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| 287 |
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[f3cc5b6] | 288 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 289 | private:
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[f3cc5b6] | 290 | ThrowStmt * clone() const override { return new ThrowStmt{ *this }; }
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| 291 | MUTATE_FRIEND
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[1e97287] | 292 | };
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| 293 |
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[0f740d6] | 294 | /// Try statement `try { ... } ...`
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[1e97287] | 295 | class TryStmt final : public Stmt {
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| 296 | public:
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| 297 | ptr<CompoundStmt> body;
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| 298 | std::vector<ptr<CatchStmt>> handlers;
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| 299 | ptr<FinallyStmt> finally;
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| 300 |
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[a7d50b6] | 301 | TryStmt(
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[6f4b7f2] | 302 | const CodeLocation & loc, const CompoundStmt * body,
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[f3cc5b6] | 303 | std::vector<ptr<CatchStmt>> && handlers, const FinallyStmt * finally,
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| 304 | std::vector<Label> && labels = {} )
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[1e97287] | 305 | : Stmt(loc, std::move(labels)), body(body), handlers(std::move(handlers)), finally(finally) {}
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| 306 |
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[f3cc5b6] | 307 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 308 | private:
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[f3cc5b6] | 309 | TryStmt * clone() const override { return new TryStmt{ *this }; }
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| 310 | MUTATE_FRIEND
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[1e97287] | 311 | };
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| 312 |
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[0f740d6] | 313 | /// Catch clause of try statement
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[1e97287] | 314 | class CatchStmt final : public Stmt {
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| 315 | public:
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| 316 | ptr<Decl> decl;
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| 317 | ptr<Expr> cond;
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| 318 | ptr<Stmt> body;
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[6f4b7f2] | 319 | ExceptionKind kind;
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[1e97287] | 320 |
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[a7d50b6] | 321 | CatchStmt(
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[6f4b7f2] | 322 | const CodeLocation & loc, ExceptionKind kind, const Decl * decl, const Expr * cond,
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[f3cc5b6] | 323 | const Stmt * body, std::vector<Label> && labels = {} )
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[1e97287] | 324 | : Stmt(loc, std::move(labels)), decl(decl), cond(cond), body(body), kind(kind) {}
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| 325 |
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[f3cc5b6] | 326 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 327 | private:
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[f3cc5b6] | 328 | CatchStmt * clone() const override { return new CatchStmt{ *this }; }
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| 329 | MUTATE_FRIEND
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[1e97287] | 330 | };
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| 331 |
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[0f740d6] | 332 | /// Finally clause of try statement
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[1e97287] | 333 | class FinallyStmt final : public Stmt {
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| 334 | public:
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| 335 | ptr<CompoundStmt> body;
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| 336 |
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[f3cc5b6] | 337 | FinallyStmt( const CodeLocation & loc, const CompoundStmt * body,
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| 338 | std::vector<Label> && labels = {} )
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[1e97287] | 339 | : Stmt(loc, std::move(labels)), body(body) {}
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| 340 |
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[f3cc5b6] | 341 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 342 | private:
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[f3cc5b6] | 343 | FinallyStmt * clone() const override { return new FinallyStmt{ *this }; }
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| 344 | MUTATE_FRIEND
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[1e97287] | 345 | };
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[2bb4a01] | 346 |
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[37cdd97] | 347 | /// Suspend statement
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| 348 | class SuspendStmt final : public Stmt {
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| 349 | public:
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| 350 | ptr<CompoundStmt> then;
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| 351 | enum Type { None, Coroutine, Generator } type = None;
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| 352 |
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| 353 | SuspendStmt( const CodeLocation & loc, const CompoundStmt * then, Type type, std::vector<Label> && labels = {} )
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| 354 | : Stmt(loc, std::move(labels)), then(then), type(type) {}
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| 355 |
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| 356 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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| 357 | private:
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| 358 | SuspendStmt * clone() const override { return new SuspendStmt{ *this }; }
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| 359 | MUTATE_FRIEND
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| 360 | };
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| 361 |
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[0f740d6] | 362 | /// Wait for concurrency statement `when (...) waitfor (... , ...) ... timeout(...) ... else ...`
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[1e97287] | 363 | class WaitForStmt final : public Stmt {
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| 364 | public:
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| 365 | struct Target {
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[e0016a5] | 366 | ptr<Expr> func;
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| 367 | std::vector<ptr<Expr>> args;
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[1e97287] | 368 | };
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| 369 |
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| 370 | struct Clause {
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| 371 | Target target;
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| 372 | ptr<Stmt> stmt;
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| 373 | ptr<Expr> cond;
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| 374 | };
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| 375 |
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| 376 | struct Timeout {
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| 377 | ptr<Expr> time;
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| 378 | ptr<Stmt> stmt;
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| 379 | ptr<Expr> cond;
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| 380 | };
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| 381 |
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| 382 | struct OrElse {
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| 383 | ptr<Stmt> stmt;
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| 384 | ptr<Expr> cond;
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| 385 | };
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| 386 |
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| 387 | std::vector<Clause> clauses;
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| 388 | Timeout timeout;
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| 389 | OrElse orElse;
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| 390 |
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[f3cc5b6] | 391 | WaitForStmt( const CodeLocation & loc, std::vector<Label> && labels = {} )
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[1e97287] | 392 | : Stmt(loc, std::move(labels)) {}
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| 393 |
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[f3cc5b6] | 394 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 395 | private:
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[f3cc5b6] | 396 | WaitForStmt * clone() const override { return new WaitForStmt{ *this }; }
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| 397 | MUTATE_FRIEND
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[1e97287] | 398 | };
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| 399 |
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[0f740d6] | 400 | /// Any declaration in a (compound) statement.
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[1e97287] | 401 | class DeclStmt final : public Stmt {
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| 402 | public:
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| 403 | ptr<Decl> decl;
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| 404 |
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[f3cc5b6] | 405 | DeclStmt( const CodeLocation & loc, const Decl * decl, std::vector<Label> && labels = {} )
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[1e97287] | 406 | : Stmt(loc, std::move(labels)), decl(decl) {}
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| 407 |
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[f3cc5b6] | 408 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 409 | private:
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[f3cc5b6] | 410 | DeclStmt * clone() const override { return new DeclStmt{ *this }; }
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| 411 | MUTATE_FRIEND
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[1e97287] | 412 | };
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| 413 |
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[0f740d6] | 414 | /// Represents an implicit application of a constructor or destructor.
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[1e97287] | 415 | class ImplicitCtorDtorStmt final : public Stmt {
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| 416 | public:
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[c570806] | 417 | ptr<Stmt> callStmt;
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[1e97287] | 418 |
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[f3cc5b6] | 419 | ImplicitCtorDtorStmt( const CodeLocation & loc, const Stmt * callStmt,
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| 420 | std::vector<Label> && labels = {} )
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[1e97287] | 421 | : Stmt(loc, std::move(labels)), callStmt(callStmt) {}
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| 422 |
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[f3cc5b6] | 423 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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[1e97287] | 424 | private:
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[f3cc5b6] | 425 | ImplicitCtorDtorStmt * clone() const override { return new ImplicitCtorDtorStmt{ *this }; }
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| 426 | MUTATE_FRIEND
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[1e97287] | 427 | };
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[2bb4a01] | 428 |
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[6cebfef] | 429 | /// Mutex Statement
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| 430 | class MutexStmt final : public Stmt {
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| 431 | public:
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| 432 | ptr<Stmt> stmt;
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| 433 | std::vector<ptr<Expr>> mutexObjs;
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| 434 |
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| 435 | MutexStmt( const CodeLocation & loc, const Stmt * stmt,
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| 436 | std::vector<ptr<Expr>> && mutexes, std::vector<Label> && labels = {} )
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| 437 | : Stmt(loc, std::move(labels)), stmt(stmt), mutexObjs(std::move(mutexes)) {}
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| 438 |
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| 439 | const Stmt * accept( Visitor & v ) const override { return v.visit( this ); }
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| 440 | private:
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| 441 | MutexStmt * clone() const override { return new MutexStmt{ *this }; }
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| 442 | MUTATE_FRIEND
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| 443 | };
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| 444 |
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[2bb4a01] | 445 | }
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| 446 |
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[f3cc5b6] | 447 | #undef MUTATE_FRIEND
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| 448 |
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[2bb4a01] | 449 | // Local Variables: //
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| 450 | // tab-width: 4 //
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| 451 | // mode: c++ //
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| 452 | // compile-command: "make install" //
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[1e97287] | 453 | // End: //
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