source: src/SymTab/Indexer.h @ 9a7a3b6

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprno_listpersistent-indexer
Last change on this file since 9a7a3b6 was 9a7a3b6, checked in by Rob Schluntz <rschlunt@…>, 4 years ago

Fix lookup{SUE}AtScope? functions to look in only a specific scope and provide lookupAtGlobalScope functions

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File size: 6.3 KB
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1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// Indexer.h --
8//
9// Author           : Richard C. Bilson
10// Created On       : Sun May 17 21:38:55 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Thu Aug 17 16:09:12 2017
13// Update Count     : 8
14//
15
16#pragma once
17
18#include <iosfwd>             // for ostream
19#include <list>               // for list
20#include <string>             // for string
21#include <functional>         // for function
22
23#include "SynTree/Visitor.h"  // for Visitor
24#include "SynTree/SynTree.h"  // for AST nodes
25
26namespace ResolvExpr {
27class Cost;
28}
29
30namespace SymTab {
31        class Indexer {
32          public:
33                explicit Indexer();
34
35                Indexer( const Indexer &that );
36                Indexer( Indexer &&that );
37                virtual ~Indexer();
38                Indexer& operator= ( const Indexer &that );
39                Indexer& operator= ( Indexer &&that );
40
41                // when using an indexer manually (e.g., within a mutator traversal), it is necessary to tell the indexer
42                // explicitly when scopes begin and end
43                void enterScope();
44                void leaveScope();
45
46                struct IdData {
47                        DeclarationWithType * id = nullptr;
48                        Expression * baseExpr = nullptr; // WithExpr
49
50                        /// non-null if this declaration is deleted
51                        BaseSyntaxNode * deleteStmt = nullptr;
52
53                        // NOTE: shouldn't need either of these constructors, but gcc-4 does not properly support initializer lists with default members.
54                        IdData() = default;
55                        IdData( DeclarationWithType * id, Expression * baseExpr, BaseSyntaxNode * deleteStmt ) : id( id ), baseExpr( baseExpr ), deleteStmt( deleteStmt ) {}
56
57                        Expression * combine( ResolvExpr::Cost & cost ) const;
58                };
59
60                /// Gets all declarations with the given ID
61                void lookupId( const std::string &id, std::list< IdData > &out ) const;
62                /// Gets the top-most type declaration with the given ID
63                NamedTypeDecl *lookupType( const std::string &id ) const;
64                /// Gets the top-most struct declaration with the given ID
65                StructDecl *lookupStruct( const std::string &id ) const;
66                /// Gets the top-most enum declaration with the given ID
67                EnumDecl *lookupEnum( const std::string &id ) const;
68                /// Gets the top-most union declaration with the given ID
69                UnionDecl *lookupUnion( const std::string &id ) const;
70                /// Gets the top-most trait declaration with the given ID
71                TraitDecl *lookupTrait( const std::string &id ) const;
72
73                /// Gets the struct declaration with the given ID at global scope
74                StructDecl *globalLookupStruct( const std::string &id ) const;
75                /// Gets the union declaration with the given ID at global scope
76                UnionDecl *globalLookupUnion( const std::string &id ) const;
77                /// Gets the enum declaration with the given ID at global scope
78                EnumDecl *globalLookupEnum( const std::string &id ) const;
79
80                void print( std::ostream &os, int indent = 0 ) const;
81
82                /// looks up a specific mangled ID at the given scope
83                IdData * lookupIdAtScope( const std::string &id, const std::string &mangleName, unsigned long scope );
84                const IdData * lookupIdAtScope( const std::string &id, const std::string &mangleName, unsigned long scope ) const;
85                /// returns true if there exists a declaration with C linkage and the given name with a different mangled name
86                bool hasIncompatibleCDecl( const std::string &id, const std::string &mangleName, unsigned long scope ) const;
87                /// returns true if there exists a declaration with C linkage and the given name with the same mangled name
88                bool hasCompatibleCDecl( const std::string &id, const std::string &mangleName, unsigned long scope ) const;
89                // equivalents to lookup functions that only look at tables at scope `scope` (which should be >= tables->scope)
90                NamedTypeDecl *lookupTypeAtScope( const std::string &id, unsigned long scope ) const;
91                StructDecl *lookupStructAtScope( const std::string &id, unsigned long scope ) const;
92                EnumDecl *lookupEnumAtScope( const std::string &id, unsigned long scope ) const;
93                UnionDecl *lookupUnionAtScope( const std::string &id, unsigned long scope ) const;
94                TraitDecl *lookupTraitAtScope( const std::string &id, unsigned long scope ) const;
95
96                typedef std::function<bool(IdData &, const std::string &)> ConflictFunction;
97
98                void addId( DeclarationWithType * decl, Expression * baseExpr = nullptr );
99                void addDeletedId( DeclarationWithType * decl, BaseSyntaxNode * deleteStmt );
100
101                void addType( NamedTypeDecl *decl );
102                void addStruct( const std::string &id );
103                void addStruct( StructDecl *decl );
104                void addEnum( EnumDecl *decl );
105                void addUnion( const std::string &id );
106                void addUnion( UnionDecl *decl );
107                void addTrait( TraitDecl *decl );
108
109                /// adds all of the IDs from WithStmt exprs
110                void addWith( std::list< Expression * > & withExprs, BaseSyntaxNode * withStmt );
111
112                /// adds all of the members of the Aggregate (addWith helper)
113                void addMembers( AggregateDecl * aggr, Expression * expr, ConflictFunction );
114
115                /// convenience function for adding a list of Ids to the indexer
116                void addIds( const std::list< DeclarationWithType * > & decls );
117
118                /// convenience function for adding a list of forall parameters to the indexer
119                void addTypes( const std::list< TypeDecl * > & tds );
120
121                /// convenience function for adding all of the declarations in a function type to the indexer
122                void addFunctionType( FunctionType * ftype );
123
124                bool doDebug = false; ///< Display debugging trace?
125          private:
126                struct Impl;
127
128                Impl *tables;         ///< Copy-on-write instance of table data structure
129                unsigned long scope;  ///< Scope index of this pointer
130
131                /// Takes a new ref to a table (returns null if null)
132                static Impl *newRef( Impl *toClone );
133                /// Clears a ref to a table (does nothing if null)
134                static void deleteRef( Impl *toFree );
135
136                // Removes matching autogenerated constructors and destructors
137                // so that they will not be selected
138                // void removeSpecialOverrides( FunctionDecl *decl );
139                void removeSpecialOverrides( const std::string &id, std::list< IdData > & out ) const;
140
141                /// Ensures that tables variable is writable (i.e. allocated, uniquely owned by this Indexer, and at the current scope)
142                void makeWritable();
143
144                /// common code for addId, addDeletedId, etc.
145                void addId( DeclarationWithType * decl, ConflictFunction, Expression * baseExpr = nullptr, BaseSyntaxNode * deleteStmt = nullptr );
146        };
147} // namespace SymTab
148
149// Local Variables: //
150// tab-width: 4 //
151// mode: c++ //
152// compile-command: "make install" //
153// End: //
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