1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
//===-- ScriptedPythonInterface.h -------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTEDPYTHONINTERFACE_H
#define LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTEDPYTHONINTERFACE_H
#include "lldb/Host/Config.h"
#if LLDB_ENABLE_PYTHON
#include "lldb/Interpreter/ScriptedInterface.h"
#include "lldb/Utility/DataBufferHeap.h"
#include "PythonDataObjects.h"
#include "SWIGPythonBridge.h"
#include "ScriptInterpreterPythonImpl.h"
namespace lldb_private {
class ScriptInterpreterPythonImpl;
class ScriptedPythonInterface : virtual public ScriptedInterface {
public:
ScriptedPythonInterface(ScriptInterpreterPythonImpl &interpreter);
virtual ~ScriptedPythonInterface() = default;
protected:
template <typename T = StructuredData::ObjectSP>
T ExtractValueFromPythonObject(python::PythonObject &p, Status &error) {
return p.CreateStructuredObject();
}
template <typename T = StructuredData::ObjectSP, typename... Args>
T Dispatch(llvm::StringRef method_name, Status &error, Args... args) {
using namespace python;
using Locker = ScriptInterpreterPythonImpl::Locker;
std::string caller_signature =
llvm::Twine(LLVM_PRETTY_FUNCTION + llvm::Twine(" (") +
llvm::Twine(method_name) + llvm::Twine(")"))
.str();
if (!m_object_instance_sp)
return ErrorWithMessage<T>(caller_signature, "Python object ill-formed",
error);
Locker py_lock(&m_interpreter, Locker::AcquireLock | Locker::NoSTDIN,
Locker::FreeLock);
PythonObject implementor(PyRefType::Borrowed,
(PyObject *)m_object_instance_sp->GetValue());
if (!implementor.IsAllocated())
return ErrorWithMessage<T>(caller_signature,
"Python implementor not allocated.", error);
PythonObject pmeth(
PyRefType::Owned,
PyObject_GetAttrString(implementor.get(), method_name.str().c_str()));
if (PyErr_Occurred())
PyErr_Clear();
if (!pmeth.IsAllocated())
return ErrorWithMessage<T>(caller_signature,
"Python method not allocated.", error);
if (PyCallable_Check(pmeth.get()) == 0) {
if (PyErr_Occurred())
PyErr_Clear();
return ErrorWithMessage<T>(caller_signature,
"Python method not callable.", error);
}
if (PyErr_Occurred())
PyErr_Clear();
// TODO: make `const char *` when removing support for Python 2.
char *format = nullptr;
std::string format_buffer;
if (sizeof...(Args) > 0) {
FormatArgs(format_buffer, args...);
// TODO: make `const char *` when removing support for Python 2.
format = const_cast<char *>(format_buffer.c_str());
}
// TODO: make `const char *` when removing support for Python 2.
PythonObject py_return(
PyRefType::Owned,
PyObject_CallMethod(implementor.get(),
const_cast<char *>(method_name.data()), format,
args...));
if (PyErr_Occurred()) {
PyErr_Print();
PyErr_Clear();
return ErrorWithMessage<T>(caller_signature,
"Python method could not be called.", error);
}
if (!py_return.IsAllocated())
return ErrorWithMessage<T>(caller_signature, "Returned object is null.",
error);
return ExtractValueFromPythonObject<T>(py_return, error);
}
Status GetStatusFromMethod(llvm::StringRef method_name);
template <typename T, typename... Args>
void FormatArgs(std::string &fmt, T arg, Args... args) const {
FormatArgs(fmt, arg);
FormatArgs(fmt, args...);
}
template <typename T> void FormatArgs(std::string &fmt, T arg) const {
fmt += GetPythonValueFormatString(arg);
}
void FormatArgs(std::string &fmt) const {}
// The lifetime is managed by the ScriptInterpreter
ScriptInterpreterPythonImpl &m_interpreter;
};
template <>
StructuredData::DictionarySP
ScriptedPythonInterface::ExtractValueFromPythonObject<
StructuredData::DictionarySP>(python::PythonObject &p, Status &error);
template <>
Status ScriptedPythonInterface::ExtractValueFromPythonObject<Status>(
python::PythonObject &p, Status &error);
template <>
lldb::DataExtractorSP
ScriptedPythonInterface::ExtractValueFromPythonObject<lldb::DataExtractorSP>(
python::PythonObject &p, Status &error);
template <>
llvm::Optional<MemoryRegionInfo>
ScriptedPythonInterface::ExtractValueFromPythonObject<
llvm::Optional<MemoryRegionInfo>>(python::PythonObject &p, Status &error);
} // namespace lldb_private
#endif // LLDB_ENABLE_PYTHON
#endif // LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTEDPYTHONINTERFACE_H
|
