peg.generate: Implement { format: "amd" }

README.md

@@ -140,13 +140,13 @@ object to `peg.generate`. The following options are supported:
     `false`)
   * `dependencies` — parser dependencies, the value is an object which maps
     variables used to access the dependencies in the parser to module IDs used
-    to load them; valid only when `format` is set to `"node"` or `"umd"`
-    (default: `{}`)
+    to load them; valid only when `format` is set to `"amd"`, `"node"`, or
+    `"umd"` (default: `{}`)
   * `exportVar` — name of a global variable into which the parser object is
     assigned to when no module loader is detected; valid only when `format` is
     set to `"umd"` (default: `null`)
-  * `format` — format of the genreated parser (`"bare"`, `"node"`, or `"umd"`);
-    valid only when `output` is set to `"source"` (default: `"bare"`)
+  * `format` — format of the genreated parser (`"amd"`, `"bare"`, `"node"`, or
+    `"umd"`); valid only when `output` is set to `"source"` (default: `"bare"`)
   * `optimize`— selects between optimizing the generated parser for parsing
     speed (`"speed"`) or code size (`"size"`) (default: `"speed"`)
   * `output` — if set to `"parser"`, the method will return generated parser

lib/compiler/passes/generate-js.js

@@ -1302,6 +1302,30 @@ function generateJS(ast, options) {
         return parts.join('\n');
       },
 
+      amd: function() {
+        var dependencyIds  = objects.values(options.dependencies),
+            dependencyVars = objects.keys(options.dependencies),
+            dependencies   = '['
+              + arrays.map(
+                  dependencyIds,
+                  function(id) { return '"' + js.stringEscape(id) + '"'; }
+                ).join(', ')
+              + ']',
+            params         = dependencyVars.join(', ');
+
+        return [
+          generateGeneratedByComment(),
+          'define(' + dependencies + ', function(' + params + ') {',
+          '  "use strict";',
+          '',
+             indent2(toplevelCode),
+          '',
+             indent2('return ' + generateParserObject() + ';'),
+          '});',
+          ''
+        ].join('\n');
+      },
+
       umd: function() {
         var parts          = [],
             dependencyIds  = objects.values(options.dependencies),