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mpl.ts
32 lines (29 loc) · 1006 Bytes
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mpl.ts
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import { compile } from './frontend';
import { readFile, writeFile } from 'fs-extra';
import jsBackend from './backends/js';
if (process.argv.length != 4) {
console.log('Usage: mpl <input> <output>');
process.exit(-1);
}
const inputPath = process.argv[2];
const outputPath = process.argv[3];
(async () => {
const input = await readFile(inputPath, 'utf8');
const frontendOutput = compile(input);
// TODO: better way to report these specific errors. Probably muck with the type of ExecutionResult.
if (
'parseErrors' in frontendOutput ||
'typeErrors' in frontendOutput ||
'kind' in frontendOutput ||
'internalError' in frontendOutput
) {
console.log(frontendOutput);
process.exit(-1);
}
const backendOutput = await jsBackend.compile(frontendOutput);
if ('error' in backendOutput) {
console.log(backendOutput.error);
process.exit(-1);
}
await writeFile(outputPath, backendOutput.target);
})();