add global node

Author: ichiriac

docs/AST.md

@@ -43,6 +43,7 @@
         -   [Eval](#eval)
         -   [Exit](#exit)
         -   [Clone](#clone)
+        -   [Global](#global)
         -   [Include](#include)
         -   [Assign](#assign)
         -   [RetIf](#retif)
@@ -511,6 +512,16 @@ Defines a classic function
 -   `nullable` **[boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)** 
 -   `body` **([Block](#block) | null)** 
 
+# Global
+
+**Extends Statement**
+
+Imports a variable from the global scope
+
+**Properties**
+
+-   `items` **[Array](#array)<[Variable](#variable)>** 
+
 # Goto
 
 **Extends Statement**

src/ast.js

@@ -49,6 +49,7 @@ var Position = require('./ast/position');
  *     - [Eval](#eval)
  *     - [Exit](#exit)
  *     - [Clone](#clone)
+ *     - [Global](#global)
  *     - [Include](#include)
  *     - [Assign](#assign)
  *     - [RetIf](#retif)
@@ -199,6 +200,7 @@ AST.prototype.prepare = function(kind, parser) {
   require('./ast/for'),
   require('./ast/foreach'),
   require('./ast/function'),
+  require('./ast/global'),
   require('./ast/goto'),
   require('./ast/identifier'),
   require('./ast/if'),

src/ast/global.js

@@ -0,0 +1,21 @@
+/*!
+ * Copyright (C) 2017 Glayzzle (BSD3 License)
+ * @authors https://github.com/glayzzle/php-parser/graphs/contributors
+ * @url http://glayzzle.com
+ */
+"use strict";
+var Statement = require('./statement');
+var KIND = 'global';
+
+/**
+ * Imports a variable from the global scope
+ * @constructor Global
+ * @extends {Statement}
+ * @property {Variable[]} items
+ */
+var Global = Statement.extends(function Global(items, location) {
+  Statement.apply(this, [KIND, location]);
+  this.items = items;
+});
+
+module.exports = Global;

src/parser/statement.js

@@ -213,9 +213,10 @@ module.exports = {
         return result();
 
       case this.tok.T_GLOBAL:
+        var result = this.node('global');
         var items = this.next().read_list(this.read_simple_variable, ',');
         this.expectEndOfStatement();
-        return ['global', items];
+        return result(items);
 
       case this.tok.T_STATIC:
         var current = [this.token, this.lexer.getState()];

test/statementTests.js

@@ -16,6 +16,22 @@ describe('Test statements', function() {
     ast.children[2].kind.should.be.exactly('goto');
     ast.children[2].label.should.be.exactly('start');
   });
+  it('test global', function() {
+    var ast = parser.parseEval([
+      'function foo() {',
+      '  global $a, $b;',
+      '}'
+    ].join('\n'), {
+      parser: { debug: false }
+    });
+    var expr = ast.children[0].body.children[0];
+    expr.kind.should.be.exactly('global');
+    expr.items[0].kind.should.be.exactly('variable');
+    expr.items[0].name.should.be.exactly('a');
+    expr.items[1].kind.should.be.exactly('variable');
+    expr.items[1].name.should.be.exactly('b');
+  });
+
   it('test try', function() {
     var ast = parser.parseEval([
       'try {',