本文整理汇总了C#中IronPython.Compiler.Ast.AstGenerator.CreateNestedContext方法的典型用法代码示例。如果您正苦于以下问题：C# AstGenerator.CreateNestedContext方法的具体用法？C# AstGenerator.CreateNestedContext怎么用？C# AstGenerator.CreateNestedContext使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IronPython.Compiler.Ast.AstGenerator的用法示例。
在下文中一共展示了AstGenerator.CreateNestedContext方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Transform
internal override MSAst.Expression Transform(AstGenerator ag) {
string className = _name;
AstGenerator classGen = new AstGenerator(ag, className, false, "class " + className);
classGen.Parameter(_parentContextParam);
// we always need to create a nested context for class defs
classGen.CreateNestedContext();
List<MSAst.Expression> init = new List<MSAst.Expression>();
classGen.AddHiddenVariable(ArrayGlobalAllocator._globalContext);
init.Add(Ast.Assign(ArrayGlobalAllocator._globalContext, Ast.Call(typeof(PythonOps).GetMethod("GetGlobalContext"), _parentContextParam)));
init.AddRange(classGen.Globals.PrepareScope(classGen));
CreateVariables(classGen, _parentContextParam, init, true, false);
List<MSAst.Expression> statements = new List<MSAst.Expression>();
// Create the body
MSAst.Expression bodyStmt = classGen.Transform(_body);
// __module__ = __name__
MSAst.Expression modStmt = GlobalAllocator.Assign(
classGen.Globals.GetVariable(classGen, _modVariable),
classGen.Globals.GetVariable(classGen, _modNameVariable));
string doc = classGen.GetDocumentation(_body);
if (doc != null) {
statements.Add(
GlobalAllocator.Assign(
classGen.Globals.GetVariable(classGen, _docVariable),
AstUtils.Constant(doc)
)
);
}
FunctionCode funcCodeObj = new FunctionCode(
ag.PyContext,
null,
null,
Name,
ag.GetDocumentation(_body),
ArrayUtils.EmptyStrings,
FunctionAttributes.None,
Span,
ag.Context.SourceUnit.Path,
ag.EmitDebugSymbols,
ag.ShouldInterpret,
FreeVariables,
GlobalVariables,
CellVariables,
AppendVariables(new List<string>()),
Variables == null ? 0 : Variables.Count,
classGen.LoopLocationsNoCreate,
classGen.HandlerLocationsNoCreate
);
MSAst.Expression funcCode = classGen.Globals.GetConstant(funcCodeObj);
classGen.FuncCodeExpr = funcCode;
if (_body.CanThrow && ag.PyContext.PythonOptions.Frames) {
bodyStmt = AstGenerator.AddFrame(classGen.LocalContext, funcCode, bodyStmt);
classGen.AddHiddenVariable(AstGenerator._functionStack);
}
bodyStmt = classGen.WrapScopeStatements(
Ast.Block(
statements.Count == 0 ?
AstGenerator.EmptyBlock :
Ast.Block(new ReadOnlyCollection<MSAst.Expression>(statements)),
modStmt,
bodyStmt,
classGen.LocalContext // return value
)
);
var lambda = Ast.Lambda<Func<CodeContext, CodeContext>>(
classGen.MakeBody(_parentContextParam, init.ToArray(), bodyStmt),
classGen.Name + "$" + _classId++,
classGen.Parameters
);
funcCodeObj.Code = lambda;
MSAst.Expression classDef = Ast.Call(
AstGenerator.GetHelperMethod("MakeClass"),
ag.EmitDebugSymbols ?
(MSAst.Expression)lambda :
Ast.Convert(funcCode, typeof(object)),
ag.LocalContext,
AstUtils.Constant(_name),
Ast.NewArrayInit(
typeof(object),
ag.TransformAndConvert(_bases, typeof(object))
),
AstUtils.Constant(FindSelfNames())
);
classDef = ag.AddDecorators(classDef, _decorators);
return ag.AddDebugInfoAndVoid(GlobalAllocator.Assign(ag.Globals.GetVariable(ag, _variable), classDef), new SourceSpan(Start, Header));
}示例2: Transform
internal override MSAst.Expression Transform(AstGenerator ag) {
string className = SymbolTable.IdToString(_name);
AstGenerator builder = new AstGenerator(ag, className, false, "class " + className);
// we always need to create a nested context for class defs
builder.CreateNestedContext();
List<MSAst.Expression> init = new List<MSAst.Expression>();
CreateVariables(builder, init);
// Create the body
MSAst.Expression bodyStmt = builder.Transform(_body);
MSAst.Expression modStmt = ag.Globals.Assign(ag.Globals.GetVariable(_modVariable), ag.Globals.GetVariable(_modNameVariable));
string doc = ag.GetDocumentation(_body);
if (doc != null) {
init.Add(
ag.Globals.Assign(
ag.Globals.GetVariable(_docVariable),
AstUtils.Constant(doc)
)
);
}
bodyStmt = builder.WrapScopeStatements(
Ast.Block(
init.Count == 0 ?
AstGenerator.EmptyBlock :
Ast.Block(new ReadOnlyCollection<MSAst.Expression>(init)),
modStmt,
bodyStmt,
builder.LocalContext // return value
)
);
MSAst.LambdaExpression lambda = Ast.Lambda(
typeof(Func<CodeContext>),
builder.MakeBody(bodyStmt, true, false),
builder.Name + "$" + _classId++,
builder.Parameters
);
MSAst.Expression classDef = Ast.Call(
AstGenerator.GetHelperMethod("MakeClass"),
lambda,
ag.LocalContext,
AstUtils.Constant(SymbolTable.IdToString(_name)),
Ast.NewArrayInit(
typeof(object),
ag.TransformAndConvert(_bases, typeof(object))
),
AstUtils.Constant(FindSelfNames())
);
classDef = ag.AddDecorators(classDef, _decorators);
return ag.AddDebugInfo(ag.Globals.Assign(ag.Globals.GetVariable(_variable), classDef), new SourceSpan(Start, Header));
}示例3: Transform
internal override MSAst.Expression Transform(AstGenerator ag) {
string className = SymbolTable.IdToString(_name);
AstGenerator classGen = new AstGenerator(ag, className, false, "class " + className);
classGen.Parameter(_parentContextParam);
// we always need to create a nested context for class defs
classGen.CreateNestedContext();
List<MSAst.Expression> init = new List<MSAst.Expression>();
classGen.AddHiddenVariable(ArrayGlobalAllocator._globalContext);
init.Add(Ast.Assign(ArrayGlobalAllocator._globalContext, Ast.Call(typeof(PythonOps).GetMethod("GetGlobalContext"), _parentContextParam)));
init.AddRange(classGen.Globals.PrepareScope(classGen));
CreateVariables(classGen, _parentContextParam, init, true, NeedsLocalsDictionary);
List<MSAst.Expression> statements = new List<MSAst.Expression>();
// Create the body
MSAst.Expression bodyStmt = classGen.Transform(_body);
// __module__ = __name__
MSAst.Expression modStmt = classGen.Globals.Assign(
classGen.Globals.GetVariable(classGen, _modVariable),
classGen.Globals.GetVariable(classGen, _modNameVariable));
string doc = classGen.GetDocumentation(_body);
if (doc != null) {
statements.Add(
classGen.Globals.Assign(
classGen.Globals.GetVariable(classGen, _docVariable),
AstUtils.Constant(doc)
)
);
}
bodyStmt = classGen.WrapScopeStatements(
Ast.Block(
statements.Count == 0 ?
AstGenerator.EmptyBlock :
Ast.Block(new ReadOnlyCollection<MSAst.Expression>(statements)),
modStmt,
bodyStmt,
classGen.LocalContext // return value
)
);
var lambda = Ast.Lambda<Func<CodeContext, CodeContext>>(
classGen.MakeBody(_parentContextParam, init.ToArray(), bodyStmt, false),
classGen.Name + "$" + _classId++,
classGen.Parameters
);
MSAst.Expression classDef = Ast.Call(
AstGenerator.GetHelperMethod("MakeClass"),
ag.EmitDebugSymbols ?
(MSAst.Expression)lambda :
(MSAst.Expression)Ast.Constant(new LazyCode<Func<CodeContext, CodeContext>>(lambda, ag.ShouldInterpret), typeof(object)),
ag.LocalContext,
AstUtils.Constant(SymbolTable.IdToString(_name)),
Ast.NewArrayInit(
typeof(object),
ag.TransformAndConvert(_bases, typeof(object))
),
AstUtils.Constant(FindSelfNames())
);
classDef = ag.AddDecorators(classDef, _decorators);
return ag.AddDebugInfo(ag.Globals.Assign(ag.Globals.GetVariable(ag, _variable), classDef), new SourceSpan(Start, Header));
}示例4: TransformToFunctionExpression
internal MSAst.Expression TransformToFunctionExpression(AstGenerator ag) {
string name;
if (IsLambda) {
name = "<lambda$" + Interlocked.Increment(ref _lambdaId) + ">";
} else {
name = SymbolTable.IdToString(_name);
}
// Create AST generator to generate the body with
AstGenerator bodyGen = new AstGenerator(ag, name, IsGenerator, MakeProfilerName(name));
FunctionAttributes flags = ComputeFlags(_parameters);
bool needsWrapperMethod = flags != FunctionAttributes.None || _parameters.Length > PythonCallTargets.MaxArgs;
// Transform the parameters.
// Populate the list of the parameter names and defaults.
List<MSAst.Expression> defaults = new List<MSAst.Expression>(0);
List<MSAst.Expression> names = new List<MSAst.Expression>();
List<MSAst.Expression> init = new List<MSAst.Expression>();
TransformParameters(ag, bodyGen, defaults, names, needsWrapperMethod, init);
MSAst.Expression parentContext;
parentContext = MSAst.Expression.Call(typeof(PythonOps).GetMethod("GetParentContextFromFunction"), _functionParam);
bodyGen.AddHiddenVariable(ArrayGlobalAllocator._globalContext);
init.Add(Ast.Assign(ArrayGlobalAllocator._globalContext, Ast.Call(typeof(PythonOps).GetMethod("GetGlobalContext"), parentContext)));
init.AddRange(bodyGen.Globals.PrepareScope(bodyGen));
// Create variables and references. Since references refer to
// parameters, do this after parameters have been created.
CreateVariables(bodyGen, parentContext, init, NeedsLocalsDictionary, NeedsLocalsDictionary);
// Initialize parameters - unpack tuples.
// Since tuples unpack into locals, this must be done after locals have been created.
InitializeParameters(bodyGen, init, needsWrapperMethod);
List<MSAst.Expression> statements = new List<MSAst.Expression>();
// For generators, we need to do a check before the first statement for Generator.Throw() / Generator.Close().
// The exception traceback needs to come from the generator's method body, and so we must do the check and throw
// from inside the generator.
if (IsGenerator) {
MSAst.Expression s1 = YieldExpression.CreateCheckThrowExpression(bodyGen, SourceSpan.None);
statements.Add(s1);
}
if (NeedsLocalsDictionary || ContainsNestedFreeVariables) {
bodyGen.CreateNestedContext();
}
MSAst.ParameterExpression extracted = null;
if (!IsGenerator && _canSetSysExcInfo) {
// need to allocate the exception here so we don't share w/ exceptions made & freed
// during the body.
extracted = bodyGen.GetTemporary("$ex", typeof(Exception));
}
// Transform the body and add the resulting statements into the list
if (!TryTransformBody(bodyGen, statements)) {
// there's an error in the body
return null;
}
if (ag.DebugMode) {
// add beginning and ending break points for the function.
if (GetExpressionEnd(statements[statements.Count - 1]) != Body.End) {
statements.Add(ag.AddDebugInfo(AstUtils.Empty(), new SourceSpan(Body.End, Body.End)));
}
}
MSAst.Expression body = Ast.Block(new ReadOnlyCollection<MSAst.Expression>(statements.ToArray()));
// If this function can modify sys.exc_info() (_canSetSysExcInfo), then it must restore the result on finish.
//
// Wrap in
// $temp = PythonOps.SaveCurrentException()
// <body>
// PythonOps.RestoreCurrentException($temp)
// Skip this if we're a generator. For generators, the try finally is handled by the PythonGenerator class
// before it's invoked. This is because the restoration must occur at every place the function returns from
// a yield point. That's different than the finally semantics in a generator.
if (extracted != null) {
MSAst.Expression s = AstUtils.Try(
Ast.Assign(
extracted,
Ast.Call(
AstGenerator.GetHelperMethod("SaveCurrentException")
)
),
body
).Finally(
Ast.Call(
AstGenerator.GetHelperMethod("RestoreCurrentException"), extracted
)
);
body = s;
}
//.........这里部分代码省略.........
示例5: TransformToFunctionExpression
internal MSAst.Expression TransformToFunctionExpression(AstGenerator ag) {
string name;
if (IsLambda) {
name = "<lambda$" + Interlocked.Increment(ref _lambdaId) + ">";
} else {
name = _name;
}
if (ag.PyContext.PythonOptions.FullFrames) {
// force a dictionary if we have enabled full frames for sys._getframe support
NeedsLocalsDictionary = true;
}
// Create AST generator to generate the body with
AstGenerator bodyGen = new AstGenerator(ag, name, IsGenerator, MakeProfilerName(name));
FunctionAttributes flags = ComputeFlags(_parameters);
bool needsWrapperMethod = _parameters.Length > PythonCallTargets.MaxArgs;
// Transform the parameters.
// Populate the list of the parameter names and defaults.
List<MSAst.Expression> defaults = new List<MSAst.Expression>(0);
List<MSAst.Expression> names = new List<MSAst.Expression>();
List<MSAst.Expression> init = new List<MSAst.Expression>();
init.Add(Ast.ClearDebugInfo(ag.Document));
TransformParameters(ag, bodyGen, defaults, names, needsWrapperMethod, init);
MSAst.Expression parentContext;
parentContext = MSAst.Expression.Call(_GetParentContextFromFunction, _functionParam);
bodyGen.AddHiddenVariable(ArrayGlobalAllocator._globalContext);
init.Add(Ast.Assign(ArrayGlobalAllocator._globalContext, Ast.Call(_GetGlobalContext, parentContext)));
init.AddRange(bodyGen.Globals.PrepareScope(bodyGen));
// Create variables and references. Since references refer to
// parameters, do this after parameters have been created.
CreateVariables(bodyGen, parentContext, init, NeedsLocalsDictionary, NeedsLocalsDictionary);
// Initialize parameters - unpack tuples.
// Since tuples unpack into locals, this must be done after locals have been created.
InitializeParameters(bodyGen, init, needsWrapperMethod);
List<MSAst.Expression> statements = new List<MSAst.Expression>();
// add beginning sequence point
statements.Add(bodyGen.AddDebugInfo(
AstUtils.Empty(),
new SourceSpan(new SourceLocation(0, Start.Line, Start.Column), new SourceLocation(0, Start.Line, Int32.MaxValue))));
// For generators, we need to do a check before the first statement for Generator.Throw() / Generator.Close().
// The exception traceback needs to come from the generator's method body, and so we must do the check and throw
// from inside the generator.
if (IsGenerator) {
MSAst.Expression s1 = YieldExpression.CreateCheckThrowExpression(bodyGen, SourceSpan.None);
statements.Add(s1);
}
if (NeedsLocalsDictionary || ContainsNestedFreeVariables) {
bodyGen.CreateNestedContext();
}
MSAst.ParameterExpression extracted = null;
if (!IsGenerator && _canSetSysExcInfo) {
// need to allocate the exception here so we don't share w/ exceptions made & freed
// during the body.
extracted = bodyGen.GetTemporary("$ex", typeof(Exception));
}
// Transform the body and add the resulting statements into the list
if (!TryTransformBody(bodyGen, statements)) {
// there's an error in the body
return null;
}
MSAst.Expression body = Ast.Block(statements);
// If this function can modify sys.exc_info() (_canSetSysExcInfo), then it must restore the result on finish.
//
// Wrap in
// $temp = PythonOps.SaveCurrentException()
// <body>
// PythonOps.RestoreCurrentException($temp)
// Skip this if we're a generator. For generators, the try finally is handled by the PythonGenerator class
// before it's invoked. This is because the restoration must occur at every place the function returns from
// a yield point. That's different than the finally semantics in a generator.
if (extracted != null) {
MSAst.Expression s = AstUtils.Try(
Ast.Assign(
extracted,
Ast.Call(
AstGenerator.GetHelperMethod("SaveCurrentException")
)
),
body
).Finally(
Ast.Call(
//.........这里部分代码省略.........