Changeset: 42 Change codegen input parsing to lookahead based; lookup table infra; input/output decl infra

1 files changed, 40 insertions, 0 deletions

diff --git a/buildtools/codegen/CodegenInput.inl b/buildtools/codegen/CodegenInput.inl
new file mode 100644
index 0000000..9fae43c
--- /dev/null
+++ b/buildtools/codegen/CodegenInput.inl
@@ -0,0 +1,40 @@
+#pragma once
+
+#include "CodegenConfig.hpp"
+#include "CodegenDecl.hpp"
+
+#include <Utils.hpp>
+
+#include <robin_hood.h>
+#include <cinttypes>
+#include <string>
+#include <vector>
+
+class CodegenInput {
+private:
+	std::vector<DeclEnum> mEnums;
+	robin_hood::unordered_map<std::string_view, size_t> mDeclByName;
+
+public:
+	void AddEnum(DeclEnum decl) {
+#if CODEGEN_DEBUG_PRINT
+		printf("Committed enum '%s'\n", decl.name.c_str());
+		for (auto& elm : decl.elements) {
+			printf("  - element %s = %" PRId64 "\n", elm.name.c_str(), elm.value);
+		}
+#endif
+
+		mDeclByName.try_emplace(decl.name, mEnums.size());
+		mEnums.push_back(std::move(decl));
+	}
+
+	const DeclEnum* FindEnumByName(std::string_view name) const {
+		// TODO handle multiple kinds of decl
+		auto iter = mDeclByName.find(name);
+		if (iter != mDeclByName.end()) {
+			return &mEnums[iter->second];
+		} else {
+			return nullptr;
+		}
+	}
+};