llvm-project/lldb/source/Commands/CommandObjectLanguage.cpp
Dave Lee 7ed185a8f2
[lldb] Expose language plugin commands based based on language of current frame (#136766)
Use the current frame's language to lookup commands provided by language plugins.

This means commands like `language {objc,cplusplus} <command>` can be used directly, without using the `language <lang>` prefix.

For example, when stopped on a C++ frame, `demangle _Z1fv` will run `language cplusplus demangle _Z1fv`.

rdar://149882520
2025-05-28 11:04:57 -07:00

39 lines
1.5 KiB
C++

//===-- CommandObjectLanguage.cpp -----------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "CommandObjectLanguage.h"
#include "lldb/Target/LanguageRuntime.h"
using namespace lldb;
using namespace lldb_private;
CommandObjectLanguage::CommandObjectLanguage(CommandInterpreter &interpreter)
: CommandObjectMultiword(
interpreter, "language", "Commands specific to a source language.",
"language <language-name> <subcommand> [<subcommand-options>]") {
// Let the LanguageRuntime populates this command with subcommands
LanguageRuntime::InitializeCommands(this);
SetHelpLong(
R"(
Language specific subcommands may be used directly (without the `language
<language-name>` prefix), when stopped on a frame written in that language. For
example, from a C++ frame, users may run `demangle` directly, instead of
`language cplusplus demangle`.
Language specific subcommands are only available when the command name cannot be
misinterpreted. Take the `demangle` command for example, if a Python command
named `demangle-tree` were loaded, then the invocation `demangle` would run
`demangle-tree`, not `language cplusplus demangle`.
)");
}
CommandObjectLanguage::~CommandObjectLanguage() = default;