1 files changed, 106 insertions, 0 deletions
diff --git a/source/20-codegen-compiler/CodegenUtils.inl b/source/20-codegen-compiler/CodegenUtils.inl
new file mode 100644
index 0000000..6feb654
--- /dev/null
+++ b/source/20-codegen-compiler/CodegenUtils.inl
@@ -0,0 +1,106 @@
+#pragma once
+
+#include "CodegenConfig.hpp"
+#include "CodegenMacros.hpp"
+
+#include "CodegenOutput.inl"
+
+#include <Macros.hpp>
+#include <ScopeGuard.hpp>
+
+#include <cstdio>
+#include <cstdlib>
+#include <filesystem>
+
+namespace Utils {
+
+std::string ReadFileAsString(const std::filesystem::path& path) {
+	auto file = Utils::OpenCstdioFile(path, Utils::Read);
+	if (!file) throw std::runtime_error("Failed to open source file.");
+	DEFER { fclose(file); };
+
+	fseek(file, 0, SEEK_END);
+	auto fileSize = ftell(file);
+	rewind(file);
+
+	std::string result(fileSize, '\0');
+	fread(result.data(), fileSize, 1, file);
+
+	return result;
+}
+
+bool WriteOutputFile(const CodegenOutput& output, std::string_view dir, std::string_view filename, std::string_view additionalSuffix = {}) {
+	char path[2048];
+	snprintf(path, sizeof(path), "%.*s/%.*s%.*s", PRINTF_STRING_VIEW(dir), PRINTF_STRING_VIEW(filename), PRINTF_STRING_VIEW(additionalSuffix));
+
+	auto outputFile = Utils::OpenCstdioFile(path, Utils::WriteTruncate);
+	if (!outputFile) {
+		printf("[ERROR] unable to open output file %s\n", path);
+		return false;
+	}
+	DEFER { fclose(outputFile); };
+
+	DEBUG_PRINTF("Writing output %s\n", path);
+	output.Write(outputFile);
+
+	return true;
+}
+
+std::string MakeFullName(std::string_view name, DeclNamespace* ns = nullptr) {
+	size_t length = 0;
+	std::vector<std::string_view> components;
+	if (!name.empty()) {
+		components.push_back(name);
+		length += name.length();
+	}
+
+	DeclNamespace* currentNamespace = ns;
+	while (currentNamespace) {
+		components.push_back(currentNamespace->name);
+		length += currentNamespace->name.size() + /*::*/ 2;
+		currentNamespace = currentNamespace->container;
+	}
+
+	std::string fullname;
+	fullname.reserve(length);
+	for (auto it = components.rbegin(); it != components.rend(); ++it) {
+		fullname += *it;
+		fullname += "::";
+	}
+	// Get rid of the last "::"
+	fullname.pop_back();
+	fullname.pop_back();
+
+	return fullname;
+}
+
+void ProduceGeneratedHeaderFileHeader(CodegenOutput& output) {
+	output.AddOutputThing(CodegenOutputThing{
+		.text = &R"""(
+// This file is generated. Any changes will be overidden when building.
+#pragma once
+
+#include <MetadataBase.hpp>
+
+#include <cstddef>
+#include <cstdint>
+)"""[1],
+	});
+}
+
+void ProduceGeneratedSourceFileHeader(CodegenOutput& output) {
+	output.AddOutputThing(CodegenOutputThing{
+		// TODO we need to get the header name
+		.text = &R"""(
+// This file is generated. Any changes will be overidden when building.
+
+#include <cstddef>
+#include <cstdint>
+#include <frozen/string.h>
+#include <frozen/unordered_map.h>
+using namespace std::literals;
+		)"""[1],
+	});
+}
+
+} // namespace Utils