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#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;
using namespace Metadata;
)"""[1];
header.AddOutputThing(std::move(headerOut));
source.AddOutputThing(std::move(sourceOut));
}
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