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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics;
using Microsoft.CodeAnalysis.CSharp.Symbols;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.PooledObjects;
using Microsoft.CodeAnalysis.Text;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.CSharp
{
internal sealed class FixedStatementBinder : LocalScopeBinder
{
private readonly FixedStatementSyntax _syntax;
public FixedStatementBinder(Binder enclosing, FixedStatementSyntax syntax)
: base(enclosing)
{
Debug.Assert(syntax != null);
_syntax = syntax;
}
protected override ImmutableArray<LocalSymbol> BuildLocals()
{
if (_syntax.Declaration != null)
{
var locals = new ArrayBuilder<LocalSymbol>(_syntax.Declaration.Variables.Count);
_syntax.Declaration.Type.VisitRankSpecifiers((rankSpecifier, args) =>
{
foreach (var size in rankSpecifier.Sizes)
{
if (size.Kind() != SyntaxKind.OmittedArraySizeExpression)
{
ExpressionVariableFinder.FindExpressionVariables(args.binder, args.locals, size);
}
}
}, (binder: this, locals: locals));
foreach (VariableDeclaratorSyntax declarator in _syntax.Declaration.Variables)
{
locals.Add(MakeLocal(_syntax.Declaration, declarator, LocalDeclarationKind.FixedVariable, allowScoped: false));
// also gather expression-declared variables from the bracketed argument lists and the initializers
ExpressionVariableFinder.FindExpressionVariables(this, locals, declarator);
}
return locals.ToImmutable();
}
return ImmutableArray<LocalSymbol>.Empty;
}
internal override ImmutableArray<LocalSymbol> GetDeclaredLocalsForScope(SyntaxNode scopeDesignator)
{
if (_syntax == scopeDesignator)
{
return this.Locals;
}
throw ExceptionUtilities.Unreachable();
}
internal override ImmutableArray<LocalFunctionSymbol> GetDeclaredLocalFunctionsForScope(CSharpSyntaxNode scopeDesignator)
{
throw ExceptionUtilities.Unreachable();
}
internal override SyntaxNode ScopeDesignator
{
get
{
return _syntax;
}
}
}
}
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