https://github.com/eronnen updated
https://github.com/llvm/llvm-project/pull/137426
>From 85c1e0de0a5cb8dd09b6f84b2514c7eb06aadac2 Mon Sep 17 00:00:00 2001
From: Ely Ronnen <elyron...@gmail.com>
Date: Sat, 26 Apr 2025 01:22:05 +0200
Subject: [PATCH] Migrating breakpointLocations request to use typed
RequestHandler
---
.../Handler/BreakpointLocationsHandler.cpp | 156 ++----------------
lldb/tools/lldb-dap/Handler/RequestHandler.h | 10 +-
.../lldb-dap/Protocol/ProtocolRequests.cpp | 17 ++
.../lldb-dap/Protocol/ProtocolRequests.h | 38 +++++
.../tools/lldb-dap/Protocol/ProtocolTypes.cpp | 14 ++
lldb/tools/lldb-dap/Protocol/ProtocolTypes.h | 21 +++
llvm/include/llvm/Support/JSON.h | 8 +
7 files changed, 122 insertions(+), 142 deletions(-)
diff --git a/lldb/tools/lldb-dap/Handler/BreakpointLocationsHandler.cpp
b/lldb/tools/lldb-dap/Handler/BreakpointLocationsHandler.cpp
index 7a477f3e97875..537f1e7b76f1d 100644
--- a/lldb/tools/lldb-dap/Handler/BreakpointLocationsHandler.cpp
+++ b/lldb/tools/lldb-dap/Handler/BreakpointLocationsHandler.cpp
@@ -9,136 +9,24 @@
#include "DAP.h"
#include "JSONUtils.h"
#include "RequestHandler.h"
+#include <vector>
namespace lldb_dap {
-// "BreakpointLocationsRequest": {
-// "allOf": [ { "$ref": "#/definitions/Request" }, {
-// "type": "object",
-// "description": "The `breakpointLocations` request returns all possible
-// locations for source breakpoints in a given range.\nClients should only
-// call this request if the corresponding capability
-// `supportsBreakpointLocationsRequest` is true.",
-// "properties": {
-// "command": {
-// "type": "string",
-// "enum": [ "breakpointLocations" ]
-// },
-// "arguments": {
-// "$ref": "#/definitions/BreakpointLocationsArguments"
-// }
-// },
-// "required": [ "command" ]
-// }]
-// },
-// "BreakpointLocationsArguments": {
-// "type": "object",
-// "description": "Arguments for `breakpointLocations` request.",
-// "properties": {
-// "source": {
-// "$ref": "#/definitions/Source",
-// "description": "The source location of the breakpoints; either
-// `source.path` or `source.sourceReference` must be specified."
-// },
-// "line": {
-// "type": "integer",
-// "description": "Start line of range to search possible breakpoint
-// locations in. If only the line is specified, the request returns all
-// possible locations in that line."
-// },
-// "column": {
-// "type": "integer",
-// "description": "Start position within `line` to search possible
-// breakpoint locations in. It is measured in UTF-16 code units and the
-// client capability `columnsStartAt1` determines whether it is 0- or
-// 1-based. If no column is given, the first position in the start line
is
-// assumed."
-// },
-// "endLine": {
-// "type": "integer",
-// "description": "End line of range to search possible breakpoint
-// locations in. If no end line is given, then the end line is assumed to
-// be the start line."
-// },
-// "endColumn": {
-// "type": "integer",
-// "description": "End position within `endLine` to search possible
-// breakpoint locations in. It is measured in UTF-16 code units and the
-// client capability `columnsStartAt1` determines whether it is 0- or
-// 1-based. If no end column is given, the last position in the end line
-// is assumed."
-// }
-// },
-// "required": [ "source", "line" ]
-// },
-// "BreakpointLocationsResponse": {
-// "allOf": [ { "$ref": "#/definitions/Response" }, {
-// "type": "object",
-// "description": "Response to `breakpointLocations` request.\nContains
-// possible locations for source breakpoints.",
-// "properties": {
-// "body": {
-// "type": "object",
-// "properties": {
-// "breakpoints": {
-// "type": "array",
-// "items": {
-// "$ref": "#/definitions/BreakpointLocation"
-// },
-// "description": "Sorted set of possible breakpoint locations."
-// }
-// },
-// "required": [ "breakpoints" ]
-// }
-// },
-// "required": [ "body" ]
-// }]
-// },
-// "BreakpointLocation": {
-// "type": "object",
-// "description": "Properties of a breakpoint location returned from the
-// `breakpointLocations` request.",
-// "properties": {
-// "line": {
-// "type": "integer",
-// "description": "Start line of breakpoint location."
-// },
-// "column": {
-// "type": "integer",
-// "description": "The start position of a breakpoint location. Position
-// is measured in UTF-16 code units and the client capability
-// `columnsStartAt1` determines whether it is 0- or 1-based."
-// },
-// "endLine": {
-// "type": "integer",
-// "description": "The end line of breakpoint location if the location
-// covers a range."
-// },
-// "endColumn": {
-// "type": "integer",
-// "description": "The end position of a breakpoint location (if the
-// location covers a range). Position is measured in UTF-16 code units
and
-// the client capability `columnsStartAt1` determines whether it is 0- or
-// 1-based."
-// }
-// },
-// "required": [ "line" ]
-// },
-void BreakpointLocationsRequestHandler::operator()(
- const llvm::json::Object &request) const {
- llvm::json::Object response;
- FillResponse(request, response);
- auto *arguments = request.getObject("arguments");
- auto *source = arguments->getObject("source");
- std::string path = GetString(source, "path").value_or("").str();
- const auto start_line = GetInteger<uint64_t>(arguments, "line")
- .value_or(LLDB_INVALID_LINE_NUMBER);
- const auto start_column = GetInteger<uint64_t>(arguments, "column")
- .value_or(LLDB_INVALID_COLUMN_NUMBER);
- const auto end_line =
- GetInteger<uint64_t>(arguments, "endLine").value_or(start_line);
- const auto end_column = GetInteger<uint64_t>(arguments, "endColumn")
- .value_or(std::numeric_limits<uint64_t>::max());
+/// The `breakpointLocations` request returns all possible locations for source
+/// breakpoints in a given range. Clients should only call this request if the
+/// corresponding capability `supportsBreakpointLocationsRequest` is true.
+llvm::Expected<protocol::BreakpointLocationsResponseBody>
+BreakpointLocationsRequestHandler::Run(
+ const protocol::BreakpointLocationsArguments &args) const {
+ std::vector<protocol::BreakpointLocation> breakpoint_locations;
+
+ std::string path = args.source.path.value_or("");
+ uint32_t start_line = args.line;
+ uint32_t start_column = args.column.value_or(LLDB_INVALID_COLUMN_NUMBER);
+ uint32_t end_line = args.endLine.value_or(start_line);
+ uint32_t end_column =
+ args.endColumn.value_or(std::numeric_limits<uint32_t>::max());
lldb::SBFileSpec file_spec(path.c_str(), true);
lldb::SBSymbolContextList compile_units =
@@ -191,18 +79,8 @@ void BreakpointLocationsRequestHandler::operator()(
std::sort(locations.begin(), locations.end());
locations.erase(llvm::unique(locations), locations.end());
- llvm::json::Array locations_json;
- for (auto &l : locations) {
- llvm::json::Object location;
- location.try_emplace("line", l.first);
- location.try_emplace("column", l.second);
- locations_json.emplace_back(std::move(location));
- }
-
- llvm::json::Object body;
- body.try_emplace("breakpoints", std::move(locations_json));
- response.try_emplace("body", std::move(body));
- dap.SendJSON(llvm::json::Value(std::move(response)));
+ return protocol::BreakpointLocationsResponseBody{
+ /*breakpoints=*/std::move(breakpoint_locations)};
}
} // namespace lldb_dap
diff --git a/lldb/tools/lldb-dap/Handler/RequestHandler.h
b/lldb/tools/lldb-dap/Handler/RequestHandler.h
index fa3d76ed4a125..d4d98220c21d2 100644
--- a/lldb/tools/lldb-dap/Handler/RequestHandler.h
+++ b/lldb/tools/lldb-dap/Handler/RequestHandler.h
@@ -204,14 +204,18 @@ class AttachRequestHandler : public LegacyRequestHandler {
void operator()(const llvm::json::Object &request) const override;
};
-class BreakpointLocationsRequestHandler : public LegacyRequestHandler {
+class BreakpointLocationsRequestHandler
+ : public RequestHandler<
+ protocol::BreakpointLocationsArguments,
+ llvm::Expected<protocol::BreakpointLocationsResponseBody>> {
public:
- using LegacyRequestHandler::LegacyRequestHandler;
+ using RequestHandler::RequestHandler;
static llvm::StringLiteral GetCommand() { return "breakpointLocations"; }
FeatureSet GetSupportedFeatures() const override {
return {protocol::eAdapterFeatureBreakpointLocationsRequest};
}
- void operator()(const llvm::json::Object &request) const override;
+ llvm::Expected<protocol::BreakpointLocationsResponseBody>
+ Run(const protocol::BreakpointLocationsArguments &args) const override;
};
class CompletionsRequestHandler : public LegacyRequestHandler {
diff --git a/lldb/tools/lldb-dap/Protocol/ProtocolRequests.cpp
b/lldb/tools/lldb-dap/Protocol/ProtocolRequests.cpp
index 61fea66490c30..a90d28742c990 100644
--- a/lldb/tools/lldb-dap/Protocol/ProtocolRequests.cpp
+++ b/lldb/tools/lldb-dap/Protocol/ProtocolRequests.cpp
@@ -245,6 +245,23 @@ bool fromJSON(const json::Value &Params, Configuration &C,
json::Path P) {
parseSourceMap(Params, C.sourceMap, P);
}
+bool fromJSON(const json::Value &Params, BreakpointLocationsArguments &BLA,
+ json::Path P) {
+ json::ObjectMapper O(Params, P);
+ return O && O.map("source", BLA.source) && O.map("line", BLA.line) &&
+ O.mapOptional("column", BLA.column) &&
+ O.mapOptional("endLine", BLA.endLine) &&
+ O.mapOptional("endColumn", BLA.endColumn);
+}
+
+llvm::json::Value toJSON(const BreakpointLocationsResponseBody &BLRB) {
+ llvm::json::Array breakpoints_json;
+ for (const auto &breakpoint : BLRB.breakpoints) {
+ breakpoints_json.push_back(toJSON(breakpoint));
+ }
+ return llvm::json::Object{{"breakpoints", std::move(breakpoints_json)}};
+}
+
bool fromJSON(const json::Value &Params, LaunchRequestArguments &LRA,
json::Path P) {
json::ObjectMapper O(Params, P);
diff --git a/lldb/tools/lldb-dap/Protocol/ProtocolRequests.h
b/lldb/tools/lldb-dap/Protocol/ProtocolRequests.h
index 33f93cc38799a..fd49e585b1dd5 100644
--- a/lldb/tools/lldb-dap/Protocol/ProtocolRequests.h
+++ b/lldb/tools/lldb-dap/Protocol/ProtocolRequests.h
@@ -30,6 +30,7 @@
#include <cstdint>
#include <optional>
#include <string>
+#include <vector>
namespace lldb_dap::protocol {
@@ -377,6 +378,43 @@ bool fromJSON(const llvm::json::Value &, StepOutArguments
&, llvm::json::Path);
/// body field is required.
using StepOutResponse = VoidResponse;
+/// Arguments for `breakpointLocations` request.
+struct BreakpointLocationsArguments {
+ /// The source location of the breakpoints; either `source.path` or
+ /// `source.sourceReference` must be specified.
+ Source source;
+
+ /// Start line of range to search possible breakpoint locations in. If only
+ /// the line is specified, the request returns all possible locations in that
+ /// line.
+ uint32_t line;
+
+ /// Start position within `line` to search possible breakpoint locations in.
+ /// It is measured in UTF-16 code units and the client capability
+ /// `columnsStartAt1` determines whether it is 0- or 1-based. If no column is
+ /// given, the first position in the start line is assumed.
+ std::optional<uint32_t> column;
+
+ /// End line of range to search possible breakpoint locations in. If no end
+ /// line is given, then the end line is assumed to be the start line.
+ std::optional<uint32_t> endLine;
+
+ /// End position within `endLine` to search possible breakpoint locations in.
+ /// It is measured in UTF-16 code units and the client capability
+ /// `columnsStartAt1` determines whether it is 0- or 1-based. If no end
column
+ /// is given, the last position in the end line is assumed.
+ std::optional<uint32_t> endColumn;
+};
+bool fromJSON(const llvm::json::Value &, BreakpointLocationsArguments &,
+ llvm::json::Path);
+
+/// Response to `breakpointLocations` request.
+struct BreakpointLocationsResponseBody {
+ /// Content of the source reference.
+ std::vector<BreakpointLocation> breakpoints;
+};
+llvm::json::Value toJSON(const BreakpointLocationsResponseBody &);
+
} // namespace lldb_dap::protocol
#endif
diff --git a/lldb/tools/lldb-dap/Protocol/ProtocolTypes.cpp
b/lldb/tools/lldb-dap/Protocol/ProtocolTypes.cpp
index e64998c4ca488..1056751503461 100644
--- a/lldb/tools/lldb-dap/Protocol/ProtocolTypes.cpp
+++ b/lldb/tools/lldb-dap/Protocol/ProtocolTypes.cpp
@@ -254,4 +254,18 @@ bool fromJSON(const llvm::json::Value &Params,
SteppingGranularity &SG,
return true;
}
+json::Value toJSON(const BreakpointLocation &B) {
+ json::Object result;
+
+ result.insert({"line", B.line});
+ if (B.column)
+ result.insert({"column", *B.column});
+ if (B.endLine)
+ result.insert({"endLine", *B.endLine});
+ if (B.endColumn)
+ result.insert({"endColumn", *B.endColumn});
+
+ return result;
+}
+
} // namespace lldb_dap::protocol
diff --git a/lldb/tools/lldb-dap/Protocol/ProtocolTypes.h
b/lldb/tools/lldb-dap/Protocol/ProtocolTypes.h
index 54941f24efbd9..0e8710a736832 100644
--- a/lldb/tools/lldb-dap/Protocol/ProtocolTypes.h
+++ b/lldb/tools/lldb-dap/Protocol/ProtocolTypes.h
@@ -322,6 +322,27 @@ enum SteppingGranularity : unsigned {
bool fromJSON(const llvm::json::Value &, SteppingGranularity &,
llvm::json::Path);
+/// Properties of a breakpoint location returned from the `breakpointLocations`
+/// request.
+struct BreakpointLocation {
+ /// Start line of breakpoint location.
+ uint32_t line;
+
+ /// The start position of a breakpoint location. Position is measured in
+ /// UTF-16 code units and the client capability `columnsStartAt1` determines
+ /// whether it is 0- or 1-based.
+ std::optional<uint32_t> column;
+
+ /// The end line of breakpoint location if the location covers a range.
+ std::optional<uint32_t> endLine;
+
+ /// The end position of a breakpoint location (if the location covers a
+ /// range). Position is measured in UTF-16 code units and the client
+ /// capability `columnsStartAt1` determines whether it is 0- or 1-based.
+ std::optional<uint32_t> endColumn;
+};
+llvm::json::Value toJSON(const BreakpointLocation &);
+
} // namespace lldb_dap::protocol
#endif
diff --git a/llvm/include/llvm/Support/JSON.h b/llvm/include/llvm/Support/JSON.h
index 7f7f5f6228763..f1f4f4db709dd 100644
--- a/llvm/include/llvm/Support/JSON.h
+++ b/llvm/include/llvm/Support/JSON.h
@@ -776,6 +776,14 @@ inline bool fromJSON(const Value &E, bool &Out, Path P) {
P.report("expected boolean");
return false;
}
+inline bool fromJSON(const Value &E, unsigned int &Out, Path P) {
+ if (auto S = E.getAsInteger()) {
+ Out = *S;
+ return true;
+ }
+ P.report("expected integer");
+ return false;
+}
inline bool fromJSON(const Value &E, uint64_t &Out, Path P) {
if (auto S = E.getAsUINT64()) {
Out = *S;
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