2018-11-30 11:07:18 +00:00
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using System;
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2018-11-28 20:23:08 +00:00
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using System.Collections.Generic;
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2018-11-23 12:28:11 +00:00
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using System.Linq;
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using Upsilon.BaseTypes;
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2018-11-30 14:28:36 +00:00
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using Upsilon.BaseTypes.Number;
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using Upsilon.BaseTypes.ScriptTypeInterfaces;
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2018-11-23 12:28:11 +00:00
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using Upsilon.Binder;
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2018-11-30 14:28:36 +00:00
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using Upsilon.Binder.VariableSymbols;
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2018-12-03 17:32:27 +00:00
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using Upsilon.BoundTypes;
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2018-11-23 12:28:11 +00:00
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using Upsilon.Evaluator;
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2018-11-30 14:28:36 +00:00
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using Type = Upsilon.BaseTypes.Type;
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2018-11-23 12:28:11 +00:00
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namespace Upsilon.StandardLibraries
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{
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public static class StaticScope
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{
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private static EvaluationScope _staticScope;
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private static BoundScope _staticBoundScope;
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public static EvaluationScope Scope
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{
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get
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{
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if (_staticScope != null)
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return _staticScope;
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var (evaluationScope, boundScope) = CreateStandardLibrary();
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_staticScope = evaluationScope;
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_staticBoundScope = boundScope;
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return _staticScope;
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}
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}
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public static BoundScope BoundScope
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{
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get
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{
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if (_staticBoundScope != null)
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return _staticBoundScope;
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var (evaluationScope, boundScope) = CreateStandardLibrary();
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_staticScope = evaluationScope;
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_staticBoundScope = boundScope;
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return _staticBoundScope;
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}
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}
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public static (EvaluationScope, BoundScope) CreateStandardLibrary()
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{
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var basicFunctions = new BasicFunctions().LoadMethods();
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2018-11-28 20:23:08 +00:00
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var funcs = new Dictionary<string, ScriptType>();
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var boundFuncs = new Dictionary<string, VariableSymbol>();
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foreach (var func in basicFunctions)
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{
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2018-11-30 11:07:18 +00:00
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funcs.Add(func.Key, func.Value.MethodInfoFunction);
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2018-11-30 14:28:36 +00:00
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var functionSymbol = new InternalFunctionVariableSymbol(func.Key, true,
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func.Value.MethodInfoFunction.ReturnType.GetScriptType(),
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2018-11-30 15:19:25 +00:00
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func.Value.MethodInfoFunction.GetParameterInfo().Select(typeInfo =>
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{
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var derivedType = DeriveValidTypes(typeInfo.Type);
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return new InternalFunctionVariableSymbol.InternalFunctionParameter(derivedType,
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typeInfo.IsOptional);
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}).ToArray())
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2018-11-30 11:07:18 +00:00
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{
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CommentValue = func.Value.CommentValue?.Split('\n')
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};
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boundFuncs.Add(func.Key, functionSymbol);
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2018-11-28 20:23:08 +00:00
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}
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var scope = new EvaluationScope(funcs);
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var boundScope = new BoundScope(boundFuncs, null);
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2018-11-23 12:28:11 +00:00
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return (scope, boundScope);
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}
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public static void RegisterStaticVariable(string name, object value)
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{
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2018-11-24 12:35:40 +00:00
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var luaVariable = value.ToScriptType();
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2018-12-03 17:32:27 +00:00
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var ubDef = BoundTypeHandler.GetTypeDefinition(value.GetType());
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var varSymbol = new FunctionParameterSymbol(name, ubDef);
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2018-11-24 11:42:54 +00:00
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BoundScope.AssignToNearest(varSymbol);
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Scope.AssignToNearest(varSymbol, luaVariable);
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2018-11-23 12:28:11 +00:00
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}
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2018-11-30 14:28:36 +00:00
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private static Type DeriveValidTypes(System.Type type)
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{
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if (type == typeof(ScriptString))
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return Type.String;
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if (typeof(ScriptNumber).IsAssignableFrom(type))
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return Type.Number;
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if (type == typeof(ScriptBoolean))
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return Type.Boolean;
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if (type == typeof(IIterable))
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return Type.Table | Type.UserData;
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if (typeof(ScriptTable).IsAssignableFrom(type))
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return Type.Table;
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2018-11-30 15:51:18 +00:00
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if (type == typeof(ScriptType))
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// allows every type
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return (Type) 255;
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2018-12-05 14:14:31 +00:00
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if (type.IsEnum)
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return Type.Number;
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2018-11-30 14:28:36 +00:00
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return Type.UserData;
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}
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2018-11-23 12:28:11 +00:00
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}
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}
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