Implement functionsNamespace option

Author: kylekatarnls

src/JsPhpize/Compiler/Compiler.php

@@ -224,6 +224,14 @@ protected function visitFunctionCall(FunctionCall $functionCall, $indent)
             $dynamicCall = '(function_exists(' . var_export($name, true) . ') ? ' .
                 $staticCall . ' : ' .
                 $dynamicCall . ')';
+
+            $functionNamespace = $this->engine->getOption('functionsNamespace');
+
+            if ($functionNamespace) {
+                $dynamicCall = '(function_exists(' . var_export($functionNamespace . '\\' . $name, true) . ') ? ' .
+                    '\\' . $functionNamespace . '\\' . $staticCall . ' : ' .
+                    $dynamicCall . ')';
+            }
         }
 
         return $this->handleVariableChildren($functionCall, $indent, $dynamicCall);

tests/functionInNamespace.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace myNameSpace;
+
+function fooBar()
+{
+    return 'Hello';
+}

tests/options.php

@@ -169,4 +169,30 @@ public function testBooleanLogicalOperators()
         $this->assertSame(false, $jsPhpize->render('return null && false'));
         $this->assertSame(false, $jsPhpize->render('return 0 || null'));
     }
+
+    /**
+     * @throws \JsPhpize\Compiler\Exception
+     * @throws \JsPhpize\Lexer\Exception
+     * @throws \JsPhpize\Parser\Exception
+     */
+    public function testFunctionNamespace()
+    {
+        include_once __DIR__ . '/functionInNamespace.php';
+
+        $jsPhpize = new JsPhpize();
+        $message = null;
+
+        try {
+            $jsPhpize->render('return fooBar()');
+        } catch (\JsPhpize\Compiler\Exception $exception) {
+            $message = $exception->getMessage();
+        }
+
+        $this->assertRegExp('/Undefined variable: fooBar/', $message);
+
+        $jsPhpize = new JsPhpize([
+            'functionsNamespace' => 'myNameSpace',
+        ]);
+        $this->assertSame('Hello', $jsPhpize->render('return fooBar()'));
+    }
 }