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// 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 "Resource.h"
#include "MCPError.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Module.h"
#include "lldb/Target/Platform.h"
using namespace lldb_private::mcp;
namespace {
struct DebuggerResource {
uint64_t debugger_id = 0;
std::string name;
uint64_t num_targets = 0;
};
llvm::json::Value toJSON(const DebuggerResource &DR) {
llvm::json::Object Result{{"debugger_id", DR.debugger_id},
{"num_targets", DR.num_targets}};
if (!DR.name.empty())
Result.insert({"name", DR.name});
return Result;
}
struct TargetResource {
size_t debugger_id = 0;
size_t target_idx = 0;
bool selected = false;
bool dummy = false;
std::string arch;
std::string path;
std::string platform;
};
llvm::json::Value toJSON(const TargetResource &TR) {
llvm::json::Object Result{{"debugger_id", TR.debugger_id},
{"target_idx", TR.target_idx},
{"selected", TR.selected},
{"dummy", TR.dummy}};
if (!TR.arch.empty())
Result.insert({"arch", TR.arch});
if (!TR.path.empty())
Result.insert({"path", TR.path});
if (!TR.platform.empty())
Result.insert({"platform", TR.platform});
return Result;
}
} // namespace
static constexpr llvm::StringLiteral kMimeTypeJSON = "application/json";
template <typename... Args>
static llvm::Error createStringError(const char *format, Args &&...args) {
return llvm::createStringError(
llvm::formatv(format, std::forward<Args>(args)...).str());
}
static llvm::Error createUnsupportedURIError(llvm::StringRef uri) {
return llvm::make_error<UnsupportedURI>(uri.str());
}
protocol::Resource
DebuggerResourceProvider::GetDebuggerResource(Debugger &debugger) {
const lldb::user_id_t debugger_id = debugger.GetID();
protocol::Resource resource;
resource.uri = llvm::formatv("lldb://debugger/{0}", debugger_id);
resource.name = debugger.GetInstanceName();
resource.description =
llvm::formatv("Information about debugger instance {0}: {1}", debugger_id,
debugger.GetInstanceName());
resource.mimeType = kMimeTypeJSON;
return resource;
}
protocol::Resource
DebuggerResourceProvider::GetTargetResource(size_t target_idx, Target &target) {
const size_t debugger_id = target.GetDebugger().GetID();
std::string target_name = llvm::formatv("target {0}", target_idx);
if (Module *exe_module = target.GetExecutableModulePointer())
target_name = exe_module->GetFileSpec().GetFilename().GetString();
protocol::Resource resource;
resource.uri =
llvm::formatv("lldb://debugger/{0}/target/{1}", debugger_id, target_idx);
resource.name = target_name;
resource.description =
llvm::formatv("Information about target {0} in debugger instance {1}",
target_idx, debugger_id);
resource.mimeType = kMimeTypeJSON;
return resource;
}
std::vector<protocol::Resource> DebuggerResourceProvider::GetResources() const {
std::vector<protocol::Resource> resources;
const size_t num_debuggers = Debugger::GetNumDebuggers();
for (size_t i = 0; i < num_debuggers; ++i) {
lldb::DebuggerSP debugger_sp = Debugger::GetDebuggerAtIndex(i);
if (!debugger_sp)
continue;
resources.emplace_back(GetDebuggerResource(*debugger_sp));
TargetList &target_list = debugger_sp->GetTargetList();
const size_t num_targets = target_list.GetNumTargets();
for (size_t j = 0; j < num_targets; ++j) {
lldb::TargetSP target_sp = target_list.GetTargetAtIndex(j);
if (!target_sp)
continue;
resources.emplace_back(GetTargetResource(j, *target_sp));
}
}
return resources;
}
llvm::Expected<protocol::ResourceResult>
DebuggerResourceProvider::ReadResource(llvm::StringRef uri) const {
auto [protocol, path] = uri.split("://");
if (protocol != "lldb")
return createUnsupportedURIError(uri);
llvm::SmallVector<llvm::StringRef, 4> components;
path.split(components, '/');
if (components.size() < 2)
return createUnsupportedURIError(uri);
if (components[0] != "debugger")
return createUnsupportedURIError(uri);
size_t debugger_idx;
if (components[1].getAsInteger(0, debugger_idx))
return createStringError("invalid debugger id '{0}': {1}", components[1],
path);
if (components.size() > 3) {
if (components[2] != "target")
return createUnsupportedURIError(uri);
size_t target_idx;
if (components[3].getAsInteger(0, target_idx))
return createStringError("invalid target id '{0}': {1}", components[3],
path);
return ReadTargetResource(uri, debugger_idx, target_idx);
}
return ReadDebuggerResource(uri, debugger_idx);
}
llvm::Expected<protocol::ResourceResult>
DebuggerResourceProvider::ReadDebuggerResource(llvm::StringRef uri,
lldb::user_id_t debugger_id) {
lldb::DebuggerSP debugger_sp = Debugger::FindDebuggerWithID(debugger_id);
if (!debugger_sp)
return createStringError("invalid debugger id: {0}", debugger_id);
DebuggerResource debugger_resource;
debugger_resource.debugger_id = debugger_id;
debugger_resource.name = debugger_sp->GetInstanceName();
debugger_resource.num_targets = debugger_sp->GetTargetList().GetNumTargets();
protocol::ResourceContents contents;
contents.uri = uri;
contents.mimeType = kMimeTypeJSON;
contents.text = llvm::formatv("{0}", toJSON(debugger_resource));
protocol::ResourceResult result;
result.contents.push_back(contents);
return result;
}
llvm::Expected<protocol::ResourceResult>
DebuggerResourceProvider::ReadTargetResource(llvm::StringRef uri,
lldb::user_id_t debugger_id,
size_t target_idx) {
lldb::DebuggerSP debugger_sp = Debugger::FindDebuggerWithID(debugger_id);
if (!debugger_sp)
return createStringError("invalid debugger id: {0}", debugger_id);
TargetList &target_list = debugger_sp->GetTargetList();
lldb::TargetSP target_sp = target_list.GetTargetAtIndex(target_idx);
if (!target_sp)
return createStringError("invalid target idx: {0}", target_idx);
TargetResource target_resource;
target_resource.debugger_id = debugger_id;
target_resource.target_idx = target_idx;
target_resource.arch = target_sp->GetArchitecture().GetTriple().str();
target_resource.dummy = target_sp->IsDummyTarget();
target_resource.selected = target_sp == debugger_sp->GetSelectedTarget();
if (Module *exe_module = target_sp->GetExecutableModulePointer())
target_resource.path = exe_module->GetFileSpec().GetPath();
if (lldb::PlatformSP platform_sp = target_sp->GetPlatform())
target_resource.platform = platform_sp->GetName();
protocol::ResourceContents contents;
contents.uri = uri;
contents.mimeType = kMimeTypeJSON;
contents.text = llvm::formatv("{0}", toJSON(target_resource));
protocol::ResourceResult result;
result.contents.push_back(contents);
return result;
}
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