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index.js
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index.js
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const acorn = require("acorn");
const { tsPlugin } = require("acorn-typescript");
const fs = require("fs");
const path = require("path");
const { exec, spawn } = require("child_process");
const { generateWholeCode, getCppFlags } = require("./src/main.js");
async function executeCommand(command, errorMessage) {
return new Promise((resolve, reject) => {
exec(command, (error, stdout, stderr) => {
if (error) {
reject(new Error(`${errorMessage}: ${error.message}`));
return;
}
resolve({ stdout, stderr });
});
});
}
class CocoCompiler {
constructor(
_buildingOptions = { _cppFile: "./test/test.cc" },
_compilingOptions = {}
) {
this.inputFile = _buildingOptions.inputFile;
this.outputFile =
_buildingOptions.outputFile ||
this.inputFile.replace(/\.js|\.ts|\.coco/, "");
this.cppFile =
_buildingOptions.cppFile ||
this.inputFile.replace(/\.js|\.ts|\.coco/, ".cc");
this.compilingOptions = {
inputFile: this.inputFile,
outputFile: this.outputFile,
cppFile: this.cppFile,
..._compilingOptions,
};
}
async buildCpp() {
try {
await fs.accessSync(this.inputFile);
} catch (error) {
this.printInputFileMissing(this.inputFile);
throw error;
}
try {
const code = fs
.readFileSync(this.inputFile, "utf-8")
.replace(/\\/g, "\\\\");
const ast = acorn.Parser.extend(tsPlugin()).parse(code, {
sourceType: "module",
ecmaVersion: "latest",
locations: true,
});
const res = generateWholeCode(ast, this.compilingOptions);
writeToFileSafely(this.cppFile, res);
createFolderSafely(this.outputFile);
copyFolder(
path.join(__dirname, `./src/lib/C++/`),
path.join(path.dirname(this.cppFile), `lib/`)
);
} catch (error) {
throw new Error(`Error building C++ with Coco: ${error.message}`);
}
}
async compile() {
try {
const customFlagModifiers = getCppFlags();
const compileCommand = `g++ ${this.cppFile} -s -o ${this.outputFile} ${customFlagModifiers} -O3 -ffast-math`;
await executeCommand(
compileCommand,
"Error compiling C++ with Coco"
);
} catch (error) {
this.printCompilingError(error);
throw error;
}
}
async run(_returnResult = false) {
const childProcess = spawn(this.outputFile);
let output = "";
childProcess.stdout.on("data", (data) => {
if (_returnResult) {
output += data;
} else {
console.log(`${data}`);
}
});
childProcess.stderr.on("data", (data) => {
console.error(`Error: ${data}`);
});
try {
await new Promise((resolve) => {
childProcess.on("close", (code) => {
resolve();
});
});
} catch (error) {
this.printRunningBinaryError(error);
throw error;
} finally {
process.on("exit", () => {
childProcess.kill();
});
}
return output;
}
printVersion() {
const packageJson = require("./package.json");
console.log(`Version: ${packageJson.version}`);
}
printUsage() {
console.log("Usage:");
console.log("-v, --version: Print the version");
console.log(
"-o, --output <file>: Compile with the specified output file"
);
console.log("Example:");
console.log("mypackage inputFile.js");
console.log("mypackage -v");
console.log("mypackage inputFile.js -o outputFile.cc");
}
printInputFileMissing(inputFile) {
console.error(
`Error: The input file "${inputFile}" does not exist or is inaccessible.`
);
console.error(
"Please ensure that the specified input file path is correct and that you have the necessary permissions to access it."
);
}
printCompilingError(error) {
console.error("Error compiling C++ with Coco: ", error.message);
}
printRunningBinaryError(error) {
console.error("Error running C++ executable:", error.message);
}
}
function writeToFileSafely(filePath, data) {
createFolderSafely(filePath);
fs.writeFileSync(filePath, data, "utf-8");
}
function createFolderSafely(folderPath) {
const destinationFolder = path.dirname(folderPath);
if (!fs.existsSync(destinationFolder)) {
fs.mkdirSync(destinationFolder, { recursive: true });
}
}
function copyFolder(sourceFolder, destinationFolder) {
if (!fs.existsSync(destinationFolder)) {
fs.mkdirSync(destinationFolder, { recursive: true });
}
const files = fs.readdirSync(sourceFolder);
files.forEach((fileName) => {
const sourceFilePath = path.join(sourceFolder, fileName);
const destinationFilePath = path.join(destinationFolder, fileName);
if (fs.lstatSync(sourceFilePath).isDirectory()) {
copyFolder(sourceFilePath, destinationFilePath);
} else {
fs.copyFileSync(sourceFilePath, destinationFilePath);
}
});
}
module.exports = CocoCompiler;