Move parser generation into grunt file

1 files changed, 23 insertions, 0 deletions

diff --git a/tasks/parser.js b/tasks/parser.js
new file mode 100644
index 0000000..f6a72c6
--- /dev/null
+++ b/tasks/parser.js
@@ -0,0 +1,23 @@
+var childProcess = require('child_process');
+
+module.exports = function(grunt) {
+  grunt.registerTask('parser', 'Generate jison parser.', function() {
+    var done = this.async();
+
+    var child = childProcess.spawn('./node_modules/.bin/jison', ['-m', 'js', 'src/handlebars.yy', 'src/handlebars.l'], {stdio: 'inherit'});
+    child.on('exit', function(code) {
+      if (code != 0) {
+        grunt.fatal('Jison failure: ' + code);
+        done();
+        return;
+      }
+
+      var src = ['src/parser-prefix.js', 'handlebars.js', 'src/parser-suffix.js'].map(grunt.file.read).join('');
+      grunt.file.delete('handlebars.js');
+
+      grunt.file.write('lib/handlebars/compiler/parser.js', src);
+      grunt.log.writeln('Parser "lib/handlebars/compiler/parser.js" created.');
+      done();
+    });
+  });
+};