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Copy pathLibraryLoader.cs
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265 lines (213 loc) · 9.25 KB
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/*----------------------------------------------------------
This Source Code Form is subject to the terms of the
Mozilla Public License, v.2.0. If a copy of the MPL
was not distributed with this file, You can obtain one
at http://mozilla.org/MPL/2.0/.
----------------------------------------------------------*/
using ScriptEngine.Machine;
using ScriptEngine.Machine.Contexts;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using OneScript.Commons;
using OneScript.Contexts;
using OneScript.Exceptions;
using OneScript.Execution;
namespace ScriptEngine.HostedScript
{
public class LibraryLoader : AutoScriptDrivenObject<LibraryLoader>
{
private readonly RuntimeEnvironment _env;
private readonly ScriptingEngine _engine;
readonly bool _customized;
readonly List<DelayLoadedScriptData> _delayLoadedScripts = new List<DelayLoadedScriptData>();
private struct DelayLoadedScriptData
{
public string path;
public string identifier;
public bool asClass;
}
private LibraryLoader(IExecutableModule moduleHandle, RuntimeEnvironment env, ScriptingEngine engine): base(moduleHandle)
{
_env = env;
_engine = engine;
_customized = true;
_engine.InitializeSDO(this);
}
private LibraryLoader(RuntimeEnvironment env, ScriptingEngine engine)
{
_env = env;
_engine = engine;
_customized = false;
}
#region Static part
public static LibraryLoader Create(ScriptingEngine engine, string processingScript)
{
var compiler = engine.GetCompilerService();
var code = engine.Loader.FromFile(processingScript);
var module = CompileModule(compiler, code, typeof(LibraryLoader));
return new LibraryLoader(module, engine.Environment, engine);
}
public static LibraryLoader Create(ScriptingEngine engine)
{
return new LibraryLoader(engine.Environment, engine);
}
#endregion
[ContextMethod("ДобавитьКласс","AddClass")]
public void AddClass(string file, string className)
{
if (!Utils.IsValidIdentifier(className))
throw RuntimeException.InvalidArgumentValue();
_delayLoadedScripts.Add(new DelayLoadedScriptData()
{
path = file,
identifier = className,
asClass = true
});
}
[ContextMethod("ДобавитьМодуль", "AddModule")]
public void AddModule(string file, string moduleName)
{
if (!Utils.IsValidIdentifier(moduleName))
throw RuntimeException.InvalidArgumentValue();
_delayLoadedScripts.Add(new DelayLoadedScriptData()
{
path = file,
identifier = moduleName,
asClass = false
});
try
{
TraceLoadLibrary(
Locale.NStr($"ru = 'Загружаю модуль ={moduleName}= в область видимости из файла {file}';"+
$"en = 'Load module ={moduleName}= in to context from file {file}'")
);
_env.InjectGlobalProperty(null, moduleName, true);
}
catch (InvalidOperationException e)
{
// символ уже определен
throw new RuntimeException(String.Format("Невозможно загрузить модуль {0}. Такой символ уже определен.", moduleName), e);
}
}
[ContextMethod("ЗагрузитьБиблиотеку", "LoadLibrary")]
public void LoadLibrary(string dllPath)
{
var assembly = System.Reflection.Assembly.LoadFrom(dllPath);
_engine.AttachExternalAssembly(assembly, _env);
}
[ContextMethod("ДобавитьМакет", "AddTemplate")]
public void AddTemplate(string file, string name, TemplateKind kind = TemplateKind.File)
{
var manager = _engine.GlobalsManager.GetInstance<TemplateStorage>();
manager.RegisterTemplate(file, name, kind);
}
public ExternalLibraryDef ProcessLibrary(string libraryPath)
{
bool success;
_delayLoadedScripts.Clear();
if(!_customized)
{
TraceLoadLibrary(
Locale.NStr($"ru = 'Использую НЕ кастомизированный загрузчик пакетов по умолчанию для библиотеки {libraryPath}';"+
$"en = 'Use NOT customized package loader for library {libraryPath}'")
);
success = DefaultProcessing(libraryPath);
}
else
{
TraceLoadLibrary(
Locale.NStr($"ru = 'Использую КАСТОМИЗИРОВАННЫЙ загрузчик пакетов для библиотеки {libraryPath}';"+
$"en = 'Use CUSTOMIZED package loader for library {libraryPath}'")
);
success = CustomizedProcessing(libraryPath);
}
if (!success)
return default;
var library = new ExternalLibraryDef(Path.GetFileName(libraryPath));
CompileDelayedModules(library);
return library;
}
private bool CustomizedProcessing(string libraryPath)
{
var libPathValue = ValueFactory.Create(libraryPath);
var defaultLoading = Variable.Create(ValueFactory.Create(true), "$internalDefaultLoading");
var cancelLoading = Variable.Create(ValueFactory.Create(false), "$internalCancelLoading");
int eventIdx = GetScriptMethod("ПриЗагрузкеБиблиотеки", "OnLibraryLoad");
if(eventIdx == -1)
{
return DefaultProcessing(libraryPath);
}
CallScriptMethod(eventIdx, new[] { libPathValue, defaultLoading, cancelLoading });
if (cancelLoading.AsBoolean()) // Отказ = Ложь
return false;
if (defaultLoading.AsBoolean())
return DefaultProcessing(libraryPath);
return true;
}
private bool DefaultProcessing(string libraryPath)
{
var files = Directory.EnumerateFiles(libraryPath, "*.os")
.Select(x => new { Name = Path.GetFileNameWithoutExtension(x), Path = x })
.Where(x => Utils.IsValidIdentifier(x.Name))
.ToList();
bool hasFiles = false;
TraceLoadLibrary(
Locale.NStr($"ru = 'Обнаружено {files.Count} модулей в библиотеке {libraryPath}';"+
$"en = 'Found {files.Count} modules in library {libraryPath}'")
);
foreach (var file in files)
{
TraceLoadLibrary(
Locale.NStr($"ru = 'Загружаю модуль библиотеки из {file.Path}';"+
$"en = 'Load library module from {file.Path}'")
);
hasFiles = true;
AddModule(file.Path, file.Name);
}
return hasFiles;
}
private void CompileDelayedModules(ExternalLibraryDef library)
{
foreach (var scriptFile in _delayLoadedScripts)
{
if (scriptFile.asClass)
{
library.AddClass(scriptFile.identifier, scriptFile.path);
}
else
{
library.AddModule(scriptFile.identifier, scriptFile.path);
}
}
library.Modules.ForEach(moduleFile =>
{
var module = CompileFile(moduleFile.FilePath);
moduleFile.Module = module;
});
library.Classes.ForEach(classFile =>
{
var module = CompileFile(classFile.FilePath);
_engine.AttachedScriptsFactory.RegisterTypeModule(classFile.Symbol, module);
classFile.Module = module;
});
_env.InitExternalLibrary(_engine, library);
}
private IExecutableModule CompileFile(string path)
{
var compiler = _engine.GetCompilerService();
var source = _engine.Loader.FromFile(path);
var module = _engine.AttachedScriptsFactory.CompileModuleFromSource(compiler, source, null);
return module;
}
private static Lazy<bool> TraceEnabled =
new Lazy<bool>(() => System.Environment.GetEnvironmentVariable("OS_LRE_TRACE") == "1");
public static void TraceLoadLibrary(string message)
{
if (TraceEnabled.Value) {
SystemLogger.Write("LRE: " + message);
}
}
}
}
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