[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 | // Decl.hpp -- |
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| 8 | // |
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| 9 | // Author : Aaron B. Moss |
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| 10 | // Created On : Thu May 9 10:00:00 2019 |
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[312029a] | 11 | // Last Modified By : Peter A. Buhr |
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[07de76b] | 12 | // Last Modified On : Fri Dec 13 17:38:33 2019 |
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| 13 | // Update Count : 29 |
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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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[d76c588] | 18 | #include <iosfwd> |
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[a300e4a] | 19 | #include <string> // for string, to_string |
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| 20 | #include <unordered_map> |
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[2bb4a01] | 21 | #include <vector> |
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[07de76b] | 22 | #include <algorithm> |
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[2bb4a01] | 23 | |
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[a300e4a] | 24 | #include "FunctionSpec.hpp" |
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[2bb4a01] | 25 | #include "Fwd.hpp" // for UniqueId |
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| 26 | #include "LinkageSpec.hpp" |
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| 27 | #include "Node.hpp" // for ptr, readonly |
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| 28 | #include "ParseNode.hpp" |
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| 29 | #include "StorageClasses.hpp" |
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| 30 | #include "Visitor.hpp" |
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[07de76b] | 31 | #include "Common/utility.h" |
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| 32 | #include "Common/SemanticError.h" // error_str |
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[2bb4a01] | 33 | |
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[f3cc5b6] | 34 | // Must be included in *all* AST classes; should be #undef'd at the end of the file |
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[99da267] | 35 | #define MUTATE_FRIEND \ |
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| 36 | template<typename node_t> friend node_t * mutate(const node_t * node); \ |
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| 37 | template<typename node_t> friend node_t * shallowCopy(const node_t * node); |
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[f3cc5b6] | 38 | |
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[2bb4a01] | 39 | namespace ast { |
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[a300e4a] | 40 | |
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[2bb4a01] | 41 | /// Base declaration class |
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| 42 | class Decl : public ParseNode { |
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| 43 | public: |
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| 44 | std::string name; |
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| 45 | Storage::Classes storage; |
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| 46 | Linkage::Spec linkage; |
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| 47 | UniqueId uniqueId = 0; |
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| 48 | bool extension = false; |
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| 49 | |
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[14cebb7a] | 50 | Decl( const CodeLocation& loc, const std::string& name, Storage::Classes storage, |
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[2bb4a01] | 51 | Linkage::Spec linkage ) |
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| 52 | : ParseNode( loc ), name( name ), storage( storage ), linkage( linkage ) {} |
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| 53 | |
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| 54 | Decl* set_extension( bool ex ) { extension = ex; return this; } |
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| 55 | |
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| 56 | /// Ensures this node has a unique ID |
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| 57 | void fixUniqueId(); |
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| 58 | /// Get canonical declaration for unique ID |
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| 59 | static readonly<Decl> fromId( UniqueId id ); |
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| 60 | |
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[23f99e1] | 61 | const Decl * accept( Visitor & v ) const override = 0; |
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[2bb4a01] | 62 | private: |
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[23f99e1] | 63 | Decl * clone() const override = 0; |
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[f3cc5b6] | 64 | MUTATE_FRIEND |
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[2bb4a01] | 65 | }; |
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| 66 | |
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| 67 | /// Typed declaration base class |
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| 68 | class DeclWithType : public Decl { |
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| 69 | public: |
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| 70 | /// Represents the type with all types and typedefs expanded. |
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| 71 | /// This field is generated by SymTab::Validate::Pass2 |
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| 72 | std::string mangleName; |
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[14cebb7a] | 73 | /// Stores the scope level at which the variable was declared. |
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[2bb4a01] | 74 | /// Used to access shadowed identifiers. |
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| 75 | int scopeLevel = 0; |
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| 76 | |
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| 77 | std::vector<ptr<Attribute>> attributes; |
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[a300e4a] | 78 | Function::Specs funcSpec; |
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[2bb4a01] | 79 | ptr<Expr> asmName; |
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| 80 | bool isDeleted = false; |
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[16ba4a6f] | 81 | bool isTypeFixed = false; |
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[2bb4a01] | 82 | |
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[14cebb7a] | 83 | DeclWithType( const CodeLocation& loc, const std::string& name, Storage::Classes storage, |
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[2bb4a01] | 84 | Linkage::Spec linkage, std::vector<ptr<Attribute>>&& attrs, Function::Specs fs ) |
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[14cebb7a] | 85 | : Decl( loc, name, storage, linkage ), mangleName(), attributes( std::move(attrs) ), |
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[a300e4a] | 86 | funcSpec(fs), asmName() {} |
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[14cebb7a] | 87 | |
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[a300e4a] | 88 | std::string scopedMangleName() const { return mangleName + "_" + std::to_string(scopeLevel); } |
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| 89 | |
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| 90 | /// Get type of this declaration. May be generated by subclass |
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[6d51bd7] | 91 | virtual const Type * get_type() const = 0; |
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[a300e4a] | 92 | /// Set type of this declaration. May be verified by subclass |
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[e0e9a0b] | 93 | virtual void set_type( const Type * ) = 0; |
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[a300e4a] | 94 | |
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[23f99e1] | 95 | const DeclWithType * accept( Visitor & v ) const override = 0; |
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[a300e4a] | 96 | private: |
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[23f99e1] | 97 | DeclWithType * clone() const override = 0; |
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[f3cc5b6] | 98 | MUTATE_FRIEND |
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[a300e4a] | 99 | }; |
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| 100 | |
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[77a3f41] | 101 | /// Object declaration `Foo foo = 42;` |
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| 102 | class ObjectDecl final : public DeclWithType { |
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| 103 | public: |
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| 104 | ptr<Type> type; |
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| 105 | ptr<Init> init; |
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| 106 | ptr<Expr> bitfieldWidth; |
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| 107 | |
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[e67991f] | 108 | ObjectDecl( const CodeLocation & loc, const std::string & name, const Type * type, |
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| 109 | const Init * init = nullptr, Storage::Classes storage = {}, |
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| 110 | Linkage::Spec linkage = Linkage::C, const Expr * bitWd = nullptr, |
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[2a8f0c1] | 111 | std::vector< ptr<Attribute> > && attrs = {}, Function::Specs fs = {} ) |
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[14cebb7a] | 112 | : DeclWithType( loc, name, storage, linkage, std::move(attrs), fs ), type( type ), |
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[77a3f41] | 113 | init( init ), bitfieldWidth( bitWd ) {} |
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[14cebb7a] | 114 | |
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[77a3f41] | 115 | const Type* get_type() const override { return type; } |
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[e0e9a0b] | 116 | void set_type( const Type * ty ) override { type = ty; } |
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[77a3f41] | 117 | |
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[23f99e1] | 118 | const DeclWithType * accept( Visitor& v ) const override { return v.visit( this ); } |
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[77a3f41] | 119 | private: |
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[23f99e1] | 120 | ObjectDecl * clone() const override { return new ObjectDecl{ *this }; } |
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[f3cc5b6] | 121 | MUTATE_FRIEND |
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[23f99e1] | 122 | }; |
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| 123 | |
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[8a5530c] | 124 | /// Object declaration `int foo()` |
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[23f99e1] | 125 | class FunctionDecl : public DeclWithType { |
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| 126 | public: |
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[954c954] | 127 | std::vector<ptr<DeclWithType>> params; |
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| 128 | std::vector<ptr<DeclWithType>> returns; |
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| 129 | // declared type, derived from parameter declarations |
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[23f99e1] | 130 | ptr<FunctionType> type; |
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| 131 | ptr<CompoundStmt> stmts; |
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[d76c588] | 132 | std::vector< ptr<Expr> > withExprs; |
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[23f99e1] | 133 | |
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[490fb92e] | 134 | FunctionDecl( const CodeLocation & loc, const std::string & name, std::vector<ptr<TypeDecl>>&& forall, |
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[954c954] | 135 | std::vector<ptr<DeclWithType>>&& params, std::vector<ptr<DeclWithType>>&& returns, |
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[23f99e1] | 136 | CompoundStmt * stmts, Storage::Classes storage = {}, Linkage::Spec linkage = Linkage::C, |
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[490fb92e] | 137 | std::vector<ptr<Attribute>>&& attrs = {}, Function::Specs fs = {}, bool isVarArgs = false); |
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| 138 | // : DeclWithType( loc, name, storage, linkage, std::move(attrs), fs ), params(std::move(params)), returns(std::move(returns)), |
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| 139 | // stmts( stmts ) {} |
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[23f99e1] | 140 | |
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[8a5530c] | 141 | const Type * get_type() const override; |
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[e0e9a0b] | 142 | void set_type( const Type * t ) override; |
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[23f99e1] | 143 | |
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| 144 | bool has_body() const { return stmts; } |
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| 145 | |
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[07de76b] | 146 | const DeclWithType * accept( Visitor & v ) const override { return v.visit( this ); } |
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[23f99e1] | 147 | private: |
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| 148 | FunctionDecl * clone() const override { return new FunctionDecl( *this ); } |
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[f3cc5b6] | 149 | MUTATE_FRIEND |
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[77a3f41] | 150 | }; |
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| 151 | |
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[360b2e13] | 152 | /// Base class for named type aliases |
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| 153 | class NamedTypeDecl : public Decl { |
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| 154 | public: |
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| 155 | ptr<Type> base; |
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[54e41b3] | 156 | std::vector<ptr<TypeDecl>> params; |
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[360b2e13] | 157 | std::vector<ptr<DeclWithType>> assertions; |
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| 158 | |
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[7030dab] | 159 | NamedTypeDecl( |
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[e0e9a0b] | 160 | const CodeLocation & loc, const std::string & name, Storage::Classes storage, |
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| 161 | const Type * b, Linkage::Spec spec = Linkage::Cforall ) |
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[54e41b3] | 162 | : Decl( loc, name, storage, spec ), base( b ), params(), assertions() {} |
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[360b2e13] | 163 | |
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| 164 | /// Produces a name for the kind of alias |
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[312029a] | 165 | virtual const char * typeString() const = 0; |
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[360b2e13] | 166 | |
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| 167 | private: |
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| 168 | NamedTypeDecl* clone() const override = 0; |
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[f3cc5b6] | 169 | MUTATE_FRIEND |
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[360b2e13] | 170 | }; |
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| 171 | |
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| 172 | /// Cforall type variable: `dtype T` |
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| 173 | class TypeDecl final : public NamedTypeDecl { |
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[07de76b] | 174 | public: |
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| 175 | enum Kind { Dtype, Otype, Ftype, Ttype, NUMBER_OF_KINDS }; |
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| 176 | |
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| 177 | Kind kind; |
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[360b2e13] | 178 | bool sized; |
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| 179 | ptr<Type> init; |
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| 180 | |
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| 181 | /// Data extracted from a type decl |
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| 182 | struct Data { |
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[07de76b] | 183 | Kind kind; |
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[360b2e13] | 184 | bool isComplete; |
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| 185 | |
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[07de76b] | 186 | Data() : kind( NUMBER_OF_KINDS ), isComplete( false ) {} |
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[d76c588] | 187 | Data( const TypeDecl * d ) : kind( d->kind ), isComplete( d->sized ) {} |
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[07de76b] | 188 | Data( Kind k, bool c ) : kind( k ), isComplete( c ) {} |
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[d76c588] | 189 | Data( const Data & d1, const Data & d2 ) |
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[07de76b] | 190 | : kind( d1.kind ), isComplete( d1.isComplete || d2.isComplete ) {} |
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[360b2e13] | 191 | |
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[07de76b] | 192 | bool operator==( const Data & o ) const { return kind == o.kind && isComplete == o.isComplete; } |
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| 193 | bool operator!=( const Data & o ) const { return !(*this == o); } |
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[360b2e13] | 194 | }; |
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| 195 | |
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[7030dab] | 196 | TypeDecl( |
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| 197 | const CodeLocation & loc, const std::string & name, Storage::Classes storage, |
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[e3bc51c] | 198 | const Type * b, TypeDecl::Kind k, bool s, const Type * i = nullptr ) |
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| 199 | : NamedTypeDecl( loc, name, storage, b ), kind( k ), sized( k == TypeDecl::Ttype || s ), |
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[9e1d485] | 200 | init( i ) {} |
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[360b2e13] | 201 | |
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[312029a] | 202 | const char * typeString() const override; |
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[360b2e13] | 203 | /// Produces a name for generated code |
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[312029a] | 204 | const char * genTypeString() const; |
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[360b2e13] | 205 | |
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[9e1d485] | 206 | /// convenience accessor to match Type::isComplete() |
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| 207 | bool isComplete() { return sized; } |
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| 208 | |
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[23f99e1] | 209 | const Decl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[07de76b] | 210 | private: |
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[23f99e1] | 211 | TypeDecl * clone() const override { return new TypeDecl{ *this }; } |
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[f3cc5b6] | 212 | MUTATE_FRIEND |
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[360b2e13] | 213 | }; |
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| 214 | |
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[d76c588] | 215 | std::ostream & operator<< ( std::ostream &, const TypeDecl::Data & ); |
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| 216 | |
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[360b2e13] | 217 | /// C-style typedef `typedef Foo Bar` |
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| 218 | class TypedefDecl final : public NamedTypeDecl { |
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| 219 | public: |
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[e0115286] | 220 | TypedefDecl( const CodeLocation& loc, const std::string& name, Storage::Classes storage, |
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[360b2e13] | 221 | Type* b, Linkage::Spec spec = Linkage::Cforall ) |
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| 222 | : NamedTypeDecl( loc, name, storage, b, spec ) {} |
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| 223 | |
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[312029a] | 224 | const char * typeString() const override { return "typedef"; } |
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[360b2e13] | 225 | |
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[23f99e1] | 226 | const Decl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[360b2e13] | 227 | private: |
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[23f99e1] | 228 | TypedefDecl * clone() const override { return new TypedefDecl{ *this }; } |
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[f3cc5b6] | 229 | MUTATE_FRIEND |
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[360b2e13] | 230 | }; |
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| 231 | |
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[a300e4a] | 232 | /// Aggregate type declaration base class |
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| 233 | class AggregateDecl : public Decl { |
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| 234 | public: |
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[312029a] | 235 | enum Aggregate { Struct, Union, Enum, Exception, Trait, Generator, Coroutine, Monitor, Thread, NoAggregate }; |
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| 236 | static const char * aggrString( Aggregate aggr ); |
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| 237 | |
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[a300e4a] | 238 | std::vector<ptr<Decl>> members; |
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[54e41b3] | 239 | std::vector<ptr<TypeDecl>> params; |
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[a300e4a] | 240 | std::vector<ptr<Attribute>> attributes; |
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| 241 | bool body = false; |
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| 242 | readonly<AggregateDecl> parent = {}; |
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| 243 | |
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[14cebb7a] | 244 | AggregateDecl( const CodeLocation& loc, const std::string& name, |
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[a300e4a] | 245 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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[54e41b3] | 246 | : Decl( loc, name, Storage::Classes{}, linkage ), members(), params(), |
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[a300e4a] | 247 | attributes( std::move(attrs) ) {} |
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[14cebb7a] | 248 | |
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[a300e4a] | 249 | AggregateDecl* set_body( bool b ) { body = b; return this; } |
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| 250 | |
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[ed3935da] | 251 | /// Produces a name for the kind of aggregate |
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[312029a] | 252 | virtual const char * typeString() const = 0; |
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[ed3935da] | 253 | |
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[f3cc5b6] | 254 | private: |
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| 255 | AggregateDecl * clone() const override = 0; |
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| 256 | MUTATE_FRIEND |
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[a300e4a] | 257 | }; |
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| 258 | |
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| 259 | /// struct declaration `struct Foo { ... };` |
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| 260 | class StructDecl final : public AggregateDecl { |
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| 261 | public: |
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[312029a] | 262 | Aggregate kind; |
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[a300e4a] | 263 | |
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[14cebb7a] | 264 | StructDecl( const CodeLocation& loc, const std::string& name, |
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[312029a] | 265 | Aggregate kind = Struct, |
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[a300e4a] | 266 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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| 267 | : AggregateDecl( loc, name, std::move(attrs), linkage ), kind( kind ) {} |
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| 268 | |
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[312029a] | 269 | bool is_coroutine() { return kind == Coroutine; } |
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[427854b] | 270 | bool is_generator() { return kind == Generator; } |
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| 271 | bool is_monitor () { return kind == Monitor ; } |
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| 272 | bool is_thread () { return kind == Thread ; } |
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[a300e4a] | 273 | |
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[23f99e1] | 274 | const Decl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[ed3935da] | 275 | |
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[312029a] | 276 | const char * typeString() const override { return aggrString( kind ); } |
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[ed3935da] | 277 | |
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[a300e4a] | 278 | private: |
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[23f99e1] | 279 | StructDecl * clone() const override { return new StructDecl{ *this }; } |
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[f3cc5b6] | 280 | MUTATE_FRIEND |
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[a300e4a] | 281 | }; |
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| 282 | |
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| 283 | /// union declaration `union Foo { ... };` |
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| 284 | class UnionDecl final : public AggregateDecl { |
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| 285 | public: |
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[14cebb7a] | 286 | UnionDecl( const CodeLocation& loc, const std::string& name, |
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[a300e4a] | 287 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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| 288 | : AggregateDecl( loc, name, std::move(attrs), linkage ) {} |
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| 289 | |
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[23f99e1] | 290 | const Decl * accept( Visitor& v ) const override { return v.visit( this ); } |
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[ed3935da] | 291 | |
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[312029a] | 292 | const char * typeString() const override { return aggrString( Union ); } |
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[ed3935da] | 293 | |
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[a300e4a] | 294 | private: |
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[23f99e1] | 295 | UnionDecl * clone() const override { return new UnionDecl{ *this }; } |
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[f3cc5b6] | 296 | MUTATE_FRIEND |
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[a300e4a] | 297 | }; |
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| 298 | |
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| 299 | /// enum declaration `enum Foo { ... };` |
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| 300 | class EnumDecl final : public AggregateDecl { |
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| 301 | public: |
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[14cebb7a] | 302 | EnumDecl( const CodeLocation& loc, const std::string& name, |
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[a300e4a] | 303 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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| 304 | : AggregateDecl( loc, name, std::move(attrs), linkage ), enumValues() {} |
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| 305 | |
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| 306 | /// gets the integer value for this enumerator, returning true iff value found |
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[9d6e7fa9] | 307 | bool valueOf( const Decl * enumerator, long long& value ) const; |
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[a300e4a] | 308 | |
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[23f99e1] | 309 | const Decl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[ed3935da] | 310 | |
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[312029a] | 311 | const char * typeString() const override { return aggrString( Enum ); } |
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[ed3935da] | 312 | |
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[a300e4a] | 313 | private: |
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[23f99e1] | 314 | EnumDecl * clone() const override { return new EnumDecl{ *this }; } |
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[f3cc5b6] | 315 | MUTATE_FRIEND |
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[a300e4a] | 316 | |
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| 317 | /// Map from names to enumerator values; kept private for lazy initialization |
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| 318 | mutable std::unordered_map< std::string, long long > enumValues; |
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| 319 | }; |
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| 320 | |
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| 321 | /// trait declaration `trait Foo( ... ) { ... };` |
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| 322 | class TraitDecl final : public AggregateDecl { |
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| 323 | public: |
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[14cebb7a] | 324 | TraitDecl( const CodeLocation& loc, const std::string& name, |
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[a300e4a] | 325 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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| 326 | : AggregateDecl( loc, name, std::move(attrs), linkage ) {} |
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| 327 | |
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[23f99e1] | 328 | const Decl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[ed3935da] | 329 | |
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[312029a] | 330 | const char * typeString() const override { return "trait"; } |
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[ed3935da] | 331 | |
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[a300e4a] | 332 | private: |
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[23f99e1] | 333 | TraitDecl * clone() const override { return new TraitDecl{ *this }; } |
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[f3cc5b6] | 334 | MUTATE_FRIEND |
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[2bb4a01] | 335 | }; |
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| 336 | |
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[e67991f] | 337 | /// With statement `with (...) ...` |
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| 338 | class WithStmt final : public Decl { |
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| 339 | public: |
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| 340 | std::vector<ptr<Expr>> exprs; |
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| 341 | ptr<Stmt> stmt; |
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| 342 | |
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| 343 | WithStmt( const CodeLocation & loc, std::vector<ptr<Expr>> && exprs, const Stmt * stmt ) |
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| 344 | : Decl(loc, "", Storage::Auto, Linkage::Cforall), exprs(std::move(exprs)), stmt(stmt) {} |
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| 345 | |
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| 346 | const Decl * accept( Visitor & v ) const override { return v.visit( this ); } |
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| 347 | private: |
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| 348 | WithStmt * clone() const override { return new WithStmt{ *this }; } |
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| 349 | MUTATE_FRIEND |
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| 350 | }; |
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| 351 | |
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[23f99e1] | 352 | class AsmDecl : public Decl { |
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| 353 | public: |
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| 354 | ptr<AsmStmt> stmt; |
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| 355 | |
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[07de76b] | 356 | AsmDecl( const CodeLocation & loc, AsmStmt * stmt ) |
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[23f99e1] | 357 | : Decl( loc, "", {}, {} ), stmt(stmt) {} |
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| 358 | |
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[07de76b] | 359 | const AsmDecl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[23f99e1] | 360 | private: |
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[07de76b] | 361 | AsmDecl * clone() const override { return new AsmDecl( *this ); } |
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[f3cc5b6] | 362 | MUTATE_FRIEND |
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[23f99e1] | 363 | }; |
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| 364 | |
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| 365 | class StaticAssertDecl : public Decl { |
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| 366 | public: |
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[112fe04] | 367 | ptr<Expr> cond; |
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[23f99e1] | 368 | ptr<ConstantExpr> msg; // string literal |
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| 369 | |
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| 370 | StaticAssertDecl( const CodeLocation & loc, const Expr * condition, const ConstantExpr * msg ) |
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[112fe04] | 371 | : Decl( loc, "", {}, {} ), cond( condition ), msg( msg ) {} |
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[23f99e1] | 372 | |
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[07de76b] | 373 | const StaticAssertDecl * accept( Visitor & v ) const override { return v.visit( this ); } |
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[23f99e1] | 374 | private: |
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| 375 | StaticAssertDecl * clone() const override { return new StaticAssertDecl( *this ); } |
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[f3cc5b6] | 376 | MUTATE_FRIEND |
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[23f99e1] | 377 | }; |
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[e0115286] | 378 | |
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[2bb4a01] | 379 | } |
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| 380 | |
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[f3cc5b6] | 381 | #undef MUTATE_FRIEND |
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| 382 | |
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[2bb4a01] | 383 | // Local Variables: // |
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| 384 | // tab-width: 4 // |
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| 385 | // mode: c++ // |
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| 386 | // compile-command: "make install" // |
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| 387 | // End: // |
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