Integrating latest 47acbe8

2021-03-25 13:57:57 -07:00
parent 448c549698
commit 75dc720198
10312 changed files with 2711566 additions and 671451 deletions
@@ -0,0 +1,92 @@
+/*
+ * All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+ * its licensors.
+ *
+ * For complete copyright and license terms please see the LICENSE at the root of this
+ * distribution (the "License"). All use of this software is governed by the License,
+ * or, if provided, by the license below or the license accompanying this file. Do not
+ * remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *
+ */
+#pragma once
+
+#include <EditorPythonBindings/EditorPythonBindingsSymbols.h>
+
+#include <AzCore/Component/Component.h>
+#include <AzCore/std/containers/unordered_set.h>
+#include <AzToolsFramework/API/EditorPythonConsoleBus.h>
+#include <AzToolsFramework/API/EditorPythonRunnerRequestsBus.h>
+#include <AzCore/std/parallel/semaphore.h>
+
+namespace EditorPythonBindings
+{
+    /**
+      * Manages the Python interpreter inside this Gem (Editor only)
+      * - redirects the Python standard output and error streams to AZ_TracePrintf and AZ_Warning, respectively
+      */      
+    class PythonSystemComponent
+        : public AZ::Component
+        , protected AzToolsFramework::EditorPythonEventsInterface
+        , protected AzToolsFramework::EditorPythonRunnerRequestBus::Handler
+    {
+    public:
+        AZ_COMPONENT(PythonSystemComponent, PythonSystemComponentTypeId, AZ::Component);
+
+        static void Reflect(AZ::ReflectContext* context);
+
+        static void GetProvidedServices(AZ::ComponentDescriptor::DependencyArrayType& provided);
+        static void GetIncompatibleServices(AZ::ComponentDescriptor::DependencyArrayType& incompatible);
+
+    protected:
+        ////////////////////////////////////////////////////////////////////////
+        // AZ::Component interface implementation
+        void Activate() override;
+        void Deactivate() override;
+        ////////////////////////////////////////////////////////////////////////
+
+        ////////////////////////////////////////////////////////////////////////
+        // AzToolsFramework::EditorPythonEventsInterface
+        bool StartPython(bool silenceWarnings = false) override;
+        bool StopPython(bool silenceWarnings = false) override;
+        void WaitForInitialization() override;
+        void ExecuteWithLock(AZStd::function<void()> executionCallback) override;
+        ////////////////////////////////////////////////////////////////////////
+
+        ////////////////////////////////////////////////////////////////////////
+        // AzToolsFramework::EditorPythonRunnerRequestBus::Handler interface implementation
+        void ExecuteByString(AZStd::string_view script, bool printResult) override;
+        void ExecuteByFilename(AZStd::string_view filename) override;
+        void ExecuteByFilenameWithArgs(AZStd::string_view filename, const AZStd::vector<AZStd::string_view>& args) override;
+        void ExecuteByFilenameAsTest(AZStd::string_view filename, const AZStd::vector<AZStd::string_view>& args) override;
+        ////////////////////////////////////////////////////////////////////////
+        
+    private:
+        // handle multiple Python initializers and threads
+        AZStd::atomic_int m_initalizeWaiterCount {0};
+        AZStd::semaphore m_initalizeWaiter;
+        AZStd::recursive_mutex m_lock;
+    
+        enum class Result
+        {
+            Okay,
+            Error_IsNotInitialized,
+            Error_InvalidFilename,
+            Error_MissingFile,
+            Error_FileOpenValidation,
+            Error_InternalException,
+            Error_PythonException,
+        };
+        Result EvaluateFile(AZStd::string_view filename, const AZStd::vector<AZStd::string_view>& args);
+
+        // bootstrap logic and data
+        using PythonPathStack = AZStd::vector<AZStd::string>;
+        void DiscoverPythonPaths(PythonPathStack& pythonPathStack);
+        void ExecuteBootstrapScripts(const PythonPathStack& pythonPathStack);
+        bool ExtendSysPath(const AZStd::unordered_set<AZStd::string>& extendPaths);
+
+        // starts the Python interpreter 
+        bool StartPythonInterpreter(const PythonPathStack& pythonPathStack);
+        bool StopPythonInterpreter();
+    };
+}