`Repro` functionality (#1085)

* WIP on serialize/save state.

* Relative string encoding.

* Added RelativeContainer unit test.
Split out RelativeContainer into core.

* Fix bug in RelativeString encoding.

* More work around relative container.

* Fix checks.

* Use RelativeBase for safe access.
Use malloc/free/realloc instead of List.

* Add natvis support for relative types.

* Setting up of state (not includes) writing of repro state.

* Capture after spCompile.

* Writing SourceFile and file system files.
Added -dump-repo

* First pass at loading state.

* First pass at reading repro.

* Small optimization around Safe32Ptr

* Refactor how repro data is stored - to make saving off the files more simple, by having all all backed by 'files'.
Make file loading always set up PathInfo so we get uniqueIdentifier info.

* Generate unique file names.

* Added RelativeFileSystem
Added saveFile to ISlangFileSystemExt and implemented for interfaces
Added mechanism to save of files (and manifest)

* Added ability to replace files in repo with directory holding their contents.

* Add support for entry points.

* Fix problem compiling on linux.

* Added SIMPLE_EX option, where everything on command line must be specified.

* Fix typo in unit test for relative container.

* Fix another typo in unit test for RelativeContainer.

* Fix small bugs.

* Fix release unused variable issue in slang-state-serialize.cpp

* Fix checking for SIMPLE_EX in testing, else broke COMMAND_LINE_SIMPLE.

* Fix warnings on 32 bit debug build.

* Added import-subdir-search-path-repro.slang test. Although disabled for now as writes to root of slang project.

* Remove wrong version of import-subdir-search-path-repro.slang

* Added import-subdir-search-path-repro.slang

1 files changed, 94 insertions, 0 deletions

diff --git a/tools/slang-test/unit-relative-container.cpp b/tools/slang-test/unit-relative-container.cpp
new file mode 100644
index 000000000..4ecd18dba
--- /dev/null
+++ b/tools/slang-test/unit-relative-container.cpp
@@ -0,0 +1,94 @@
+// unit-test-path.cpp
+
+#include "../../source/core/slang-relative-container.h"
+
+#include "test-context.h"
+
+using namespace Slang;
+
+static void _checkEncodeDecode(uint32_t size)
+{
+    uint8_t encode[RelativeString::kMaxSizeEncodeSize];
+
+    size_t encodeSize = RelativeString::calcEncodedSize(size, encode);
+
+    size_t decodedSize;
+    const char* chars = RelativeString::decodeSize((const char*)encode, decodedSize);
+
+    SLANG_CHECK(decodedSize == size);
+    SLANG_CHECK(chars - (const char*)encode == encodeSize);
+}
+
+namespace { // anonymous
+
+struct Root
+{
+    Relative32Array<Relative32Ptr<RelativeString> > dirs;
+    Relative32Ptr<RelativeString> name;
+    float value;
+};
+
+} // anonymous
+
+static void relativeContainerUnitTest()
+{
+    _checkEncodeDecode(253);
+
+    for (int64_t i = 0; i < 0x100000000; i += (i / 2) + 1)
+    {
+        _checkEncodeDecode(uint32_t(i));
+    }
+
+    {
+        RelativeContainer container;
+
+        const char* strings[] =
+        {
+            "Hello",
+            "World",
+            nullptr,
+        };
+
+        {
+            Safe32Ptr<Root> root = container.allocate<Root>();
+
+            auto array = container.allocateArray<Relative32Ptr<RelativeString>>(SLANG_COUNT_OF(strings));
+            for (Int i = 0; i < SLANG_COUNT_OF(strings); ++i)
+            {
+                array[i] = container.newString(strings[i]);
+            }
+
+            root->dirs = array;
+        }
+
+        {
+            RelativeContainer copy;
+            copy.set(container.getData(), container.getDataCount()); 
+
+            Root* root = (Root*)copy.getData();
+
+            SLANG_CHECK(root->dirs.getCount() == SLANG_COUNT_OF(strings));
+
+            Int count = root->dirs.getCount();
+            for (Int i = 0; i < count; ++i)
+            {
+                RelativeString* str = root->dirs[i];
+
+                const char* check = strings[i];
+
+                if (check)
+                {
+                    SLANG_CHECK(str != nullptr);
+                    const char* strCstr = str->getCstr();
+                    SLANG_CHECK(strcmp(strCstr, check) == 0);
+                }
+                else
+                {
+                    SLANG_CHECK(str == nullptr);
+                }
+            }
+        }
+    }
+}
+
+SLANG_UNIT_TEST("RelativeContainer", relativeContainerUnitTest);