script: add ScriptDataCursor

cdcScript/CMakeLists.txt

@@ -3,6 +3,7 @@ target_sources(dxhr PRIVATE
 	GarbageCollector.cpp
 	GCObject.cpp
 	PackageBinaryLoader.cpp
+	ScriptDataCursor.cpp
 	ScriptManager.cpp
 	ScriptObject.cpp
 	ScriptType.cpp)

cdcScript/ScriptDataCursor.cpp

@@ -0,0 +1,50 @@
+#include "ScriptDataCursor.h"
+
+namespace cdc {
+
+ScriptDataCursor::ScriptDataCursor(ScriptType *_scriptType) : scriptType(_scriptType) {
+	pDataMemberArray = scriptType->blob->m_members;
+	cursor = pDataMemberArray.begin();
+	end    = pDataMemberArray.end();
+	refill();
+}
+
+void ScriptDataCursor::refill() {
+	if (scriptType == nullptr)
+		return;
+
+	while (cursor == end) {
+
+		scriptType = scriptType->getParentType();
+		if (scriptType == nullptr)
+			break;
+
+		auto blob = scriptType->blob;
+
+		pDataMemberArray = scriptType->blob->m_members;
+		cursor = pDataMemberArray.begin();
+		end    = pDataMemberArray.end();
+	}
+}
+
+void ScriptDataCursor::advance() {
+	cursor++;
+	refill();
+}
+
+ScriptUniqueDataCursor::ScriptUniqueDataCursor(ScriptType *scriptType) :
+	ScriptDataCursor(scriptType),
+	field20(0),
+	field24(1)
+{
+	if (cursor < end)
+		seen.insert(cursor->m_offset);
+}
+
+void ScriptUniqueDataCursor::advance() {
+	do {
+		ScriptDataCursor::advance();
+	} while(cursor < end && seen.insert(cursor->m_offset).second == false);
+}
+
+}

cdcScript/ScriptDataCursor.h

@@ -0,0 +1,34 @@
+#pragma once
+#include "cdcSys/SArray.h"
+#include "cdcSys/HashSet.h"
+#include "ScriptType.h"
+
+namespace cdc {
+
+class ScriptDataCursor {
+protected:
+	ScriptType        *scriptType;
+	SArray<DataMember> pDataMemberArray;
+	DataMember        *cursor;
+	DataMember        *end;
+	void refill();
+
+public:
+	ScriptDataCursor(ScriptType *scriptType);
+	bool done() const { return cursor == end; }
+	DataMember *operator->() const { return cursor; }
+	operator DataMember*() const { return cursor; }
+	virtual ~ScriptDataCursor() = default;
+	virtual void advance();
+};
+
+struct ScriptUniqueDataCursor : public ScriptDataCursor {
+	HashSet<uint16_t> seen;
+	uint32_t field20;
+	uint32_t field24;
+public:
+	ScriptUniqueDataCursor(ScriptType *scriptType);
+	void advance() override;
+};
+
+}

cdcSys/HashSet.h

@@ -0,0 +1,27 @@
+#pragma once
+#include <unordered_set>
+
+namespace cdc {
+
+template <typename T>
+using HashSet = std::unordered_set<T>;
+
+}
+
+/*
+#include <cstdint>
+#include "Allocator.h"
+#include "Algorithm.h"
+
+namespace cdc {
+
+template <typename T>
+struct HashSet {
+	using value_type = T;
+	using iterator = int;
+	// TODO
+	Pair<iterator, bool> insert(value_type const&);
+};
+
+}
+*/

cdcSys/SArray.h

@@ -10,7 +10,7 @@ struct SArray {
 
 	size_t size() { return ((uint32_t*)m_ptr)[-1]; }
 	T *begin() { return m_ptr; }
-	T *end() { return m_ptr + size(); }
+	T *end() { return m_ptr ? m_ptr + size() : m_ptr; }
 	T& operator[](size_t index) { return m_ptr[index]; }
 	T const& operator[](size_t index) const { return m_ptr[index]; }