1 files changed, 146 insertions, 0 deletions
diff --git a/source/CodegenCompiler/CodegenUtils.cpp b/source/CodegenCompiler/CodegenUtils.cpp
new file mode 100644
index 0000000..0c70cb6
--- /dev/null
+++ b/source/CodegenCompiler/CodegenUtils.cpp
@@ -0,0 +1,146 @@
+#include "CodegenUtils.hpp"
+
+#include <Macros.hpp>
+#include <ScopeGuard.hpp>
+#include <Utils.hpp>
+
+#include <cstdio>
+#include <cstdlib>
+
+bool Utils::WriteOutputFile(const CodegenOutput& output, const char* path) {
+	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 Utils::MakeFullName(std::string_view name, DeclNamespace* ns) {
+	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;
+}
+
+// NOTE: assuming we are only dealing with ASCII characters
+static bool IsLowerCase(char c) {
+	return c >= 'a' && c <= 'z';
+}
+static bool IsUpperCase(char c) {
+	return c >= 'A' && c <= 'Z';
+}
+static bool IsAlphabetic(char c) {
+	return IsLowerCase(c) || IsUpperCase(c);
+}
+static char MakeUpperCase(char c) {
+	if (IsAlphabetic(c)) {
+		return IsUpperCase(c)
+			? c
+			: ('A' + (c - 'a'));
+	}
+	return c;
+}
+
+std::vector<std::string_view> Utils::SplitIdentifier(std::string_view name) {
+	// TODO handle SCREAMING_CASE
+
+	size_t chunkStart = 0;
+	size_t chunkEnd = 0;
+	std::vector<std::string_view> result;
+	auto PushChunk = [&]() { result.push_back(std::string_view(name.begin() + chunkStart, name.begin() + chunkEnd)); };
+	while (chunkEnd < name.size()) {
+		char c = name[chunkEnd];
+		if (IsUpperCase(c)) {
+			// Start of next chunk, using camelCase or PascalCase
+			PushChunk();
+			chunkStart = chunkEnd;
+			chunkEnd = chunkStart + 1;
+			continue;
+		} else if (c == '_') {
+			// End of this chunk, using snake_case
+			PushChunk();
+			chunkStart = chunkEnd + 1;
+			chunkEnd = chunkStart + 1;
+			continue;
+		} else if (c == '-') {
+			// End of this chunk, using kebab-case
+			PushChunk();
+			chunkStart = chunkEnd + 1;
+			chunkEnd = chunkStart + 1;
+			continue;
+		}
+		++chunkEnd;
+	}
+
+	if ((chunkEnd - chunkStart) >= 1) {
+		PushChunk();
+	}
+
+	return result;
+}
+
+std::string Utils::MakePascalCase(std::string_view name) {
+	std::string result;
+	for (auto part : SplitIdentifier(name)) {
+		result += MakeUpperCase(part[0]);
+		result += part.substr(1);
+	}
+	return result;
+}
+
+void Utils::ProduceGeneratedHeader(const char* headerFilename, CodegenOutput& header, const char* sourceFilename, CodegenOutput& source) {
+	CodegenOutputThing headerOut;
+	headerOut.text += &R"""(
+// This file is generated. Any changes will be overidden when building.
+#pragma once
+#include <MetadataBase.hpp>
+#include <cstddef>
+#include <cstdint>
+)"""[1];
+
+	CodegenOutputThing sourceOut;
+	APPEND_LIT_LN(sourceOut.text, "// This file is generated. Any changes will be overidden when building.");
+	APPEND_FMT_LN(sourceOut.text, "#include \"%s\"", headerFilename);
+	sourceOut.text += &R"""(
+#include <MetadataDetails.hpp>
+#include <frozen/string.h>
+#include <frozen/unordered_map.h>
+using namespace std::literals;
+)"""[1];
+
+	header.AddOutputThing(std::move(headerOut));
+	source.AddOutputThing(std::move(sourceOut));
+}
+
+void Utils::ProduceClassTypeInfo(CodegenOutput& source, std::string_view className, const DeclNamespace* ns) {
+	CodegenOutputThing thing;
+
+	source.AddOutputThing(std::move(thing));
+}