ClangExpressionDeclMap.h revision e562a073bba53fa46161feb51d1b1e36f9af9666 
1//===-- ClangExpressionDeclMap.h --------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef liblldb_ClangExpressionDeclMap_h_
11#define liblldb_ClangExpressionDeclMap_h_
12
13// C Includes
14#include <signal.h>
15#include <stdint.h>
16
17// C++ Includes
18#include <vector>
19
20// Other libraries and framework includes
21// Project includes
22#include "lldb/Core/ClangForward.h"
23#include "lldb/Core/Value.h"
24#include "lldb/Symbol/TaggedASTType.h"
25
26namespace llvm {
27    class Type;
28    class Value;
29}
30
31namespace lldb_private {
32
33class ClangPersistentVariables;
34class Error;
35class Function;
36class NameSearchContext;
37class Variable;
38
39class ClangExpressionDeclMap
40{
41public:
42    ClangExpressionDeclMap(ExecutionContext *exe_ctx,
43                           ClangPersistentVariables &persistent_vars);
44    ~ClangExpressionDeclMap();
45
46    // Interface for ClangStmtVisitor
47    bool GetIndexForDecl (uint32_t &index,
48                          const clang::Decl *decl);
49
50    // Interface for IRForTarget
51    bool AddValueToStruct (llvm::Value *value,
52                           const clang::NamedDecl *decl,
53                           std::string &name,
54                           void *type,
55                           clang::ASTContext *ast_context,
56                           size_t size,
57                           off_t alignment);
58    bool DoStructLayout ();
59    bool GetStructInfo (uint32_t &num_elements,
60                        size_t &size,
61                        off_t &alignment);
62    bool GetStructElement (const clang::NamedDecl *&decl,
63                           llvm::Value *&value,
64                           off_t &offset,
65                           uint32_t index);
66
67    bool GetFunctionInfo (const clang::NamedDecl *decl,
68                          llvm::Value**& value,
69                          uint64_t &ptr);
70
71    bool GetFunctionAddress (const char *name,
72                             uint64_t &ptr);
73
74    // Interface for DwarfExpression
75    Value *GetValueForIndex (uint32_t index);
76
77    // Interface for CommandObjectExpression
78    bool Materialize(ExecutionContext *exe_ctx,
79                     lldb::addr_t &struct_address,
80                     Error &error);
81
82    bool DumpMaterializedStruct(ExecutionContext *exe_ctx,
83                                Stream &s,
84                                Error &error);
85
86    bool Dematerialize(ExecutionContext *exe_ctx,
87                       lldb_private::Value &result_value,
88                       Error &error);
89
90    // Interface for ClangASTSource
91    void GetDecls (NameSearchContext &context,
92                   const char *name);
93
94    typedef TaggedASTType<0> TypeFromParser;
95    typedef TaggedASTType<1> TypeFromUser;
96private:
97    struct Tuple
98    {
99        const clang::NamedDecl  *m_decl;
100        TypeFromParser          m_parser_type;
101        TypeFromUser            m_user_type;
102        lldb_private::Value     *m_value; /* owned by ClangExpressionDeclMap */
103        llvm::Value             *m_llvm_value;
104    };
105
106    struct StructMember
107    {
108        const clang::NamedDecl *m_decl;
109        llvm::Value            *m_value;
110        std::string             m_name;
111        TypeFromParser          m_parser_type;
112        off_t                   m_offset;
113        size_t                  m_size;
114        off_t                   m_alignment;
115    };
116
117    typedef std::vector<Tuple> TupleVector;
118    typedef TupleVector::iterator TupleIterator;
119
120    typedef std::vector<StructMember> StructMemberVector;
121    typedef StructMemberVector::iterator StructMemberIterator;
122
123    TupleVector                 m_tuples;
124    StructMemberVector          m_members;
125    ExecutionContext           *m_exe_ctx;
126    SymbolContext              *m_sym_ctx; /* owned by ClangExpressionDeclMap */
127    ClangPersistentVariables   &m_persistent_vars;
128    off_t                       m_struct_alignment;
129    size_t                      m_struct_size;
130    bool                        m_struct_laid_out;
131    lldb::addr_t                m_allocated_area;
132    lldb::addr_t                m_materialized_location;
133
134    Variable *FindVariableInScope(const SymbolContext &sym_ctx,
135                                  const char *name,
136                                  TypeFromUser *type = NULL);
137
138    Value *GetVariableValue(ExecutionContext &exe_ctx,
139                            Variable *var,
140                            clang::ASTContext *parser_ast_context,
141                            TypeFromUser *found_type = NULL,
142                            TypeFromParser *parser_type = NULL);
143
144    void AddOneVariable(NameSearchContext &context, Variable *var);
145    void AddOneFunction(NameSearchContext &context, Function *fun, Symbol *sym);
146    void AddOneType(NameSearchContext &context, Type *type);
147
148    bool DoMaterialize (bool dematerialize,
149                        ExecutionContext *exe_ctx,
150                        lldb_private::Value *result_value, /* must be non-NULL if D is set */
151                        Error &err);
152
153    bool DoMaterializeOneVariable(bool dematerialize,
154                                  ExecutionContext &exe_ctx,
155                                  const SymbolContext &sym_ctx,
156                                  const char *name,
157                                  TypeFromUser type,
158                                  lldb::addr_t addr,
159                                  Error &err);
160};
161
162class ClangPersistentVariables
163{
164
165};
166
167} // namespace lldb_private
168
169#endif  // liblldb_ClangExpressionDeclMap_h_
170