JSON Parser and Writer (#1859)

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

* WIP JSONWriter/JSONParser.

* Checking different Layout styles for JSON.

* Add slang-json-parser.h/.cpp

1 files changed, 46 insertions, 0 deletions

diff --git a/tools/slang-test/unit-test-json.cpp b/tools/slang-test/unit-test-json.cpp
index fff16b136..5a59cdcc3 100644
--- a/tools/slang-test/unit-test-json.cpp
+++ b/tools/slang-test/unit-test-json.cpp
@@ -1,6 +1,7 @@
 
 #include "../../source/compiler-core/slang-json-lexer.h"
 #include "../../source/core/slang-string-escape-util.h"
+#include "../../source/compiler-core/slang-json-parser.h"
 
 #include "test-context.h"
 
@@ -48,6 +49,22 @@ static SlangResult _lex(const char* in, DiagnosticSink* sink, List<JSONToken>& t
     return SLANG_OK;
 }
 
+static SlangResult _parse(const char* in, DiagnosticSink* sink, JSONWriter& writer)
+{
+    SourceManager* sourceManager = sink->getSourceManager();
+
+    String contents(in);
+    SourceFile* sourceFile = sourceManager->createSourceFileWithString(PathInfo::makeUnknown(), contents);
+    SourceView* sourceView = sourceManager->createSourceView(sourceFile, nullptr, SourceLoc());
+
+    JSONLexer lexer;
+    lexer.init(sourceView, sink);
+
+    JSONParser parser;
+    SLANG_RETURN_ON_FAIL(parser.parse(&lexer, sourceView, &writer, sink));
+    return SLANG_OK;
+}
+
 static bool _areEqual(SourceManager* sourceManager, const List<JSONToken>& toks, const Element* eles, Index elesCount)
 {
     if (toks.getCount() != elesCount)
@@ -175,6 +192,35 @@ static void jsonUnitTest()
             SLANG_CHECK(escaped == buf);
         }
     }
+
+    {
+        const char in[] = "{ \"Hello\" : \"Json\", \"!\" : 10, \"array\" : [1, 2, 3.0] }";
+
+        {
+            auto style = JSONWriter::IndentationStyle::Allman;
+
+            JSONWriter writer(style);
+            _parse(in, &sink, writer);
+
+            JSONWriter writerCheck(style);
+            _parse(writer.getBuilder().getBuffer(), &sink, writerCheck);
+
+            SLANG_CHECK(writerCheck.getBuilder() == writer.getBuilder());
+        }
+
+        {
+            auto style = JSONWriter::IndentationStyle::KNR;
+
+            JSONWriter writer(style, 80);
+            _parse(in, &sink, writer);
+
+            JSONWriter writerCheck(style);
+            _parse(writer.getBuilder().getBuffer(), &sink, writerCheck);
+
+            SLANG_CHECK(writerCheck.getBuilder() == writer.getBuilder());
+        }
+
+    }
 }
 
 SLANG_UNIT_TEST("JSON", jsonUnitTest);