本文整理汇总了C#中IronPython.Compiler.Ast.AstGenerator.PopLineUpdated方法的典型用法代码示例。如果您正苦于以下问题：C# AstGenerator.PopLineUpdated方法的具体用法？C# AstGenerator.PopLineUpdated怎么用？C# AstGenerator.PopLineUpdated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.PopLineUpdated方法的2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) {
// allocated all variables here so they won't be shared w/ other
// locals allocated during the body or except blocks.
MSAst.ParameterExpression noNestedException = null;
if (_finally != null) {
noNestedException = ag.GetTemporary("$noException", typeof(bool));
}
MSAst.ParameterExpression lineUpdated = null;
MSAst.ParameterExpression runElse = null;
if (_else != null || (_handlers != null && _handlers.Length > 0)) {
lineUpdated = ag.GetTemporary("$lineUpdated", typeof(bool));
if (_else != null) {
runElse = ag.GetTemporary("run_else", typeof(bool));
}
}
// don't allocate locals below here...
MSAst.Expression body = ag.Transform(_body);
MSAst.Expression @else = ag.Transform(_else);
if (body == null) {
return null;
}
MSAst.ParameterExpression exception;
MSAst.Expression @catch = TransformHandlers(ag, out exception);
MSAst.Expression result;
// We have else clause, must generate guard around it
if (@else != null) {
Debug.Assert(@catch != null);
// run_else = true;
// try {
// try_body
// } catch ( ... ) {
// run_else = false;
// catch_body
// }
// if (run_else) {
// else_body
// }
result =
Ast.Block(
Ast.Assign(runElse, Ast.Constant(true)),
// save existing line updated, we could choose to do this only for nested exception handlers.
ag.PushLineUpdated(false, lineUpdated),
AstUtils.Try(
ag.AddDebugInfo(Ast.Empty(), new SourceSpan(Span.Start, _header)),
body
).Catch(exception,
Ast.Assign(runElse, Ast.Constant(false)),
@catch,
// restore existing line updated after exception handler completes
ag.PopLineUpdated(lineUpdated),
Ast.Default(body.Type)
),
AstUtils.IfThen(runElse,
@else
),
Ast.Empty()
);
} else if (@catch != null) { // no "else" clause
// try {
// <try body>
// } catch (Exception e) {
// ... catch handling ...
// }
//
result = AstUtils.Try(
ag.AddDebugInfo(Ast.Empty(), new SourceSpan(Span.Start, _header)),
// save existing line updated
ag.PushLineUpdated(false, lineUpdated),
body
).Catch(exception,
@catch,
// restore existing line updated after exception handler completes
ag.PopLineUpdated(lineUpdated),
Ast.Default(body.Type)
);
} else {
result = body;
}
try {
return AddFinally(ag, result, noNestedException);
} finally {
// free all locals here after the children nodes have been generated
if (lineUpdated != null) {
ag.FreeTemp(lineUpdated);
}
if (runElse != null) {
ag.FreeTemp(@runElse);
}
}
}示例2: Transform
//.........这里部分代码省略.........
//******************************************************************
MSAst.ParameterExpression exception = ag.GetTemporary("exception", typeof(Exception));
MSAst.ParameterExpression nestedFrames = ag.GetTemporary("$nestedFrames", typeof(List<DynamicStackFrame>));
statements[4] =
// try:
AstUtils.Try(
AstUtils.Try(// try statement body
ag.PushLineUpdated(false, lineUpdated),
_var != null ?
ag.AddDebugInfo(
Ast.Block(
// VAR = value
_var.TransformSet(ag, SourceSpan.None, value, PythonOperationKind.None),
// BLOCK
ag.Transform(_body),
AstUtils.Empty()
),
_body.Span
) :
// BLOCK
ag.Transform(_body) // except:, // try statement location
).Catch(exception,
// Python specific exception handling code
TryStatement.GetTracebackHeader(
ag,
exception,
ag.AddDebugInfo(
Ast.Block(
// exc = False
ag.MakeAssignment(
exc,
AstUtils.Constant(false)
),
Ast.Assign(
nestedFrames,
Ast.Call(AstGenerator.GetHelperMethod("GetAndClearDynamicStackFrames"))
),
// if not exit(*sys.exc_info()):
// raise
AstUtils.IfThen(
ag.Convert(
typeof(bool),
ConversionResultKind.ExplicitCast,
ag.Operation(
typeof(bool),
PythonOperationKind.Not,
MakeExitCall(ag, exit, exception)
)
),
ag.UpdateLineUpdated(true),
Ast.Call(
AstGenerator.GetHelperMethod("SetDynamicStackFrames"),
nestedFrames
),
Ast.Rethrow()
)
),
_body.Span
)
),
Ast.Call(
AstGenerator.GetHelperMethod("SetDynamicStackFrames"),
nestedFrames
),
ag.PopLineUpdated(lineUpdated),
Ast.Empty()
)
// finally:
).Finally(
// if exc:
// exit(None, None, None)
AstUtils.IfThen(
exc,
ag.AddDebugInfo(
Ast.Block(
Ast.Dynamic(
ag.BinderState.Invoke(
new CallSignature(3) // signature doesn't include function
),
typeof(object),
new MSAst.Expression[] {
ag.LocalContext,
exit,
AstUtils.Constant(null),
AstUtils.Constant(null),
AstUtils.Constant(null)
}
),
Ast.Empty()
),
_contextManager.Span
)
)
);
statements[4] = ag.AddDebugInfo(statements[4], Span);
statements[5] = AstUtils.Empty();
return ag.AddDebugInfo(Ast.Block(statements), _body.Span);
}