initial commitHEADmain

1 files changed, 34 insertions, 0 deletions

diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..09d952b
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,34 @@
+import { args, type Args } from '@/args';
+import { join } from 'path';
+import { watch } from 'fs/promises';
+import { generateParser, GRAMMAR_FILE, GENERATED_PARSER } from '@/parser';
+import { ConsoleTracingLogger } from '@/utils';
+
+const devMode = async (logger: ConsoleTracingLogger) => {
+  logger.info('Watching for changes in parser...');
+  const watcher = watch(import.meta.dir, { recursive: true });
+  for await (const event of watcher) {
+    if (event.filename?.endsWith(GRAMMAR_FILE)) {
+      const grammarFile = join(import.meta.dir, event.filename);
+      const outputFile = join(
+        import.meta.dir,
+        event.filename.replace(GRAMMAR_FILE, GENERATED_PARSER),
+      );
+      logger.info(
+        `Generating parser at Location=(${grammarFile}) to Source=(${outputFile})...`,
+      );
+      generateParser(grammarFile, outputFile);
+    }
+  }
+};
+
+export const main = async (args: Args) => {
+  const logger = new ConsoleTracingLogger('main');
+
+  if (args.devMode) {
+    logger.info('Starting in dev mode...');
+    await devMode(logger.createChild('devMode'));
+  }
+};
+
+main(args);