Support around JSON-RPC (#2014)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Use 'Process' to communicate with an command line tool.

* Remove slang-win-stream

* Tidy up windows ProcessUtil.

* First version of BufferedReadStream.

* Windows working IPC for steams.

* Test proxy count option.

* Split Process/ProcessUtil. Process is platform dependant. ProcessUtil are functions that are platform independent.

* First implementation of Unix Process interface.

* Unix process compiles on cygwin.

* Fix typo in unix process.

* Separate unix pipe stream error of invalid access, from pipe availability.

* Fix in standard line extraction.

* Make fd non blocking.

* Fix issues with Windows Process streams.

* Added UnixPipe.

* Some fixes around UnixPipeStream.

* Make a unix stream closed explicit.

* Hack to debug linux process/stream.

* Revert to old linux pipe handling.

* Pass executable path for unit tests.
Split out CommandLine into own source.

* Small improvements in process/command line.

* Check process behavior with crash.

* Make stderr and stdout unbuffered for crash testing.

* Only turn disable buffering in crash test.

* Disable crash test on CI.

* Fix crash on clang/linux.

* Enable crash test.
Remove _appendBuffer as can use StreamUtil functionality.

* Added inital processing for http headers.

* Small improvements to HttpHeader.

* First pass HTTPPacketConnection working on windows.

* Enable other Process communication tests.

* Update comments.

* WIP JSON RPC.

* Add terminate to Process.
Made JSONRPC a Util.

* Small tidy up around HTTPPacketConnection.

* Improve process termination options.

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/source/compiler-core/slang-json-rpc.cpp b/source/compiler-core/slang-json-rpc.cpp
new file mode 100644
index 000000000..15da92ff0
--- /dev/null
+++ b/source/compiler-core/slang-json-rpc.cpp
@@ -0,0 +1,48 @@
+#include "slang-json-rpc.h"
+
+namespace Slang {
+
+// https://www.jsonrpc.org/specification
+
+//    m_sourceManager.initialize(nullptr, nullptr);
+//    m_diagnosticSink.init(&m_sourceManager, &JSONLexer::calcLexemeLocation);
+
+/* static */SlangResult JSONRPCUtil::parseJSON(const UnownedStringSlice& slice, JSONContainer* container, DiagnosticSink* sink, JSONValue& outValue)
+{
+    SourceManager* sourceManager = sink->getSourceManager();
+
+    // Now need to parse as JSON
+    String contents(slice);
+    SourceFile* sourceFile = sourceManager->createSourceFileWithString(PathInfo::makeUnknown(), contents);
+    SourceView* sourceView = sourceManager->createSourceView(sourceFile, nullptr, SourceLoc());
+
+    JSONLexer lexer;
+    lexer.init(sourceView, sink);
+
+    JSONBuilder builder(container);
+
+    JSONParser parser;
+    SLANG_RETURN_ON_FAIL(parser.parse(&lexer, sourceView, &builder, sink));
+
+    outValue = builder.getRootValue();
+    return SLANG_OK;
+}
+
+SlangResult JSONRPCUtil::parseJSONAndConsume(HTTPPacketConnection* connection, JSONContainer* container, DiagnosticSink* sink, JSONValue& outValue)
+{
+    if (!connection->hasContent())
+    {
+        return SLANG_FAIL;
+    }
+
+    auto content = connection->getContent();
+
+    UnownedStringSlice text((const char*)content.begin(), content.getCount());
+    SlangResult res = parseJSON(text, container, sink, outValue);
+
+    // Consume the content
+    connection->consumeContent();
+    return res;
+}
+
+} // namespace Slang