1 //===-- CommandObjectScript.cpp ---------------------------------*- 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 #include "CommandObjectScript.h"
11 
12 // C Includes
13 // C++ Includes
14 // Other libraries and framework includes
15 // Project includes
16 
17 #include "lldb/Core/Debugger.h"
18 
19 #include "lldb/DataFormatters/DataVisualization.h"
20 
21 #include "lldb/Interpreter/Args.h"
22 #include "lldb/Interpreter/CommandInterpreter.h"
23 #include "lldb/Interpreter/CommandReturnObject.h"
24 #include "lldb/Interpreter/ScriptInterpreter.h"
25 
26 using namespace lldb;
27 using namespace lldb_private;
28 
29 //-------------------------------------------------------------------------
30 // CommandObjectScript
31 //-------------------------------------------------------------------------
32 
33 CommandObjectScript::CommandObjectScript(CommandInterpreter &interpreter,
34                                          ScriptLanguage script_lang)
35     : CommandObjectRaw(
36           interpreter, "script",
37           "Invoke the script interpreter with provided code and display any "
38           "results.  Start the interactive interpreter if no code is supplied.",
39           "script [<script-code>]") {}
40 
41 CommandObjectScript::~CommandObjectScript() {}
42 
43 bool CommandObjectScript::DoExecute(const char *command,
44                                     CommandReturnObject &result) {
45 #ifdef LLDB_DISABLE_PYTHON
46   // if we ever support languages other than Python this simple #ifdef won't
47   // work
48   result.AppendError("your copy of LLDB does not support scripting.");
49   result.SetStatus(eReturnStatusFailed);
50   return false;
51 #else
52   if (m_interpreter.GetDebugger().GetScriptLanguage() ==
53       lldb::eScriptLanguageNone) {
54     result.AppendError(
55         "the script-lang setting is set to none - scripting not available");
56     result.SetStatus(eReturnStatusFailed);
57     return false;
58   }
59 
60   ScriptInterpreter *script_interpreter = m_interpreter.GetScriptInterpreter();
61 
62   if (script_interpreter == nullptr) {
63     result.AppendError("no script interpreter");
64     result.SetStatus(eReturnStatusFailed);
65     return false;
66   }
67 
68   DataVisualization::ForceUpdate(); // script might change Python code we use
69                                     // for formatting.. make sure we keep up to
70                                     // date with it
71 
72   if (command == nullptr || command[0] == '\0') {
73     script_interpreter->ExecuteInterpreterLoop();
74     result.SetStatus(eReturnStatusSuccessFinishNoResult);
75     return result.Succeeded();
76   }
77 
78   // We can do better when reporting the status of one-liner script execution.
79   if (script_interpreter->ExecuteOneLine(command, &result))
80     result.SetStatus(eReturnStatusSuccessFinishNoResult);
81   else
82     result.SetStatus(eReturnStatusFailed);
83 
84   return result.Succeeded();
85 #endif
86 }
87