40 lines
1.6 KiB
C#
40 lines
1.6 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
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namespace Microsoft.AspNetCore.Razor.Parser
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{
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public partial class CSharpCodeParser
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{
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private void SetUpExpressions()
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{
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MapExpressionKeyword(AwaitExpression, CSharpKeyword.Await);
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}
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private void AwaitExpression(bool topLevel)
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{
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// Ensure that we're on the await statement (only runs in debug)
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Assert(CSharpKeyword.Await);
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// Accept the "await" and move on
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AcceptAndMoveNext();
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// Accept 1 or more spaces between the await and the following code.
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AcceptWhile(IsSpacingToken(includeNewLines: false, includeComments: true));
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// Top level basically indicates if we're within an expression or statement.
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// Ex: topLevel true = @await Foo() | topLevel false = @{ await Foo(); }
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// Note that in this case @{ <b>@await Foo()</b> } top level is true for await.
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// Therefore, if we're top level then we want to act like an implicit expression,
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// otherwise just act as whatever we're contained in.
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if (topLevel)
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{
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// Setup the Span to be an async implicit expression (an implicit expresison that allows spaces).
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// Spaces are allowed because of "@await Foo()".
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AsyncImplicitExpression();
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}
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}
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}
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}
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