js-slang
Version:
Javascript-based implementations of Source, written in Typescript
41 lines • 1.63 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const path_1 = require("path");
const fs_1 = require("fs");
const transpiler_1 = require("./transpiler");
const encoder_visitor_1 = require("./utils/encoder-visitor");
const escodegen = require("escodegen");
function transpile(inputFilePath, outputFilePath) {
fs_1.default.readFile(inputFilePath, "utf8", (err, data) => {
if (err) {
console.error(`Error reading file: ${err}`);
return;
}
// we transpile the file
const transpiledAST = (0, transpiler_1.schemeParse)(data);
const encodedAST = (0, encoder_visitor_1.estreeEncode)(transpiledAST);
const transpiledProgram = escodegen.generate(encodedAST);
fs_1.default.writeFile(outputFilePath, transpiledProgram, err => {
if (err) {
console.error(`Error writing file: ${err}`);
return;
}
console.log(`${inputFilePath} has been transpiled to ${outputFilePath}`);
});
});
}
// get file paths from command line arguments
const inputFilePath = process.argv[2];
const outputFilePath = process.argv[3]
? process.argv[3]
: inputFilePath.replace(".scm", ".js");
// validate file paths
if (!inputFilePath) {
console.error("Please provide an input file path and an output file path");
}
if (!(path_1.default.extname(inputFilePath) === ".scm")) {
console.error("Please provide a .scm file for compilation!");
}
// if everything is fine, we transpile the file
transpile(inputFilePath, outputFilePath);
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