override protected ImmutableArray <LocalSymbol> BuildLocals()
{
ExpressionSyntax expressionSyntax = TargetExpressionSyntax;
VariableDeclarationSyntax declarationSyntax = _syntax.Declaration;
Debug.Assert((expressionSyntax == null) ^ (declarationSyntax == null)); // Can't have both or neither.
if (expressionSyntax != null)
{
var locals = ArrayBuilder <LocalSymbol> .GetInstance();
ExpressionVariableFinder.FindExpressionVariables(this, locals, expressionSyntax);
return(locals.ToImmutableAndFree());
}
else
{
var locals = ArrayBuilder <LocalSymbol> .GetInstance(1);
{
locals.Add(MakeLocal(declarationSyntax, LocalDeclarationKind.UsingVariable));
// also gather expression-declared variables from the bracketed argument lists and the initializers
ExpressionVariableFinder.FindExpressionVariables(this, locals, declarationSyntax);
}
return(locals.ToImmutableAndFree());
}
}
protected override ImmutableArray <LocalSymbol> BuildLocals()
{
var builder = ArrayBuilder <LocalSymbol> .GetInstance();
ExpressionVariableFinder.FindExpressionVariables(this, builder, _expressions);
return(builder.ToImmutableAndFree());
}
protected override ImmutableArray <LocalSymbol> BuildLocals()
{
var builder = ArrayBuilder <LocalSymbol> .GetInstance();
ExpressionVariableFinder.FindExpressionVariables(this, builder, (CSharpSyntaxNode)ScopeDesignator,
GetBinder((CSharpSyntaxNode)ScopeDesignator));
return(builder.ToImmutableAndFree());
}
override protected ImmutableArray <LocalSymbol> BuildLocals()
{
if (_syntax.Declaration != null)
{
var locals = new ArrayBuilder <LocalSymbol>(1);
locals.Add(MakeLocal(_syntax.Declaration, LocalDeclarationKind.FixedVariable));
// also gather expression-declared variables from the bracketed argument lists and the initializers
ExpressionVariableFinder.FindExpressionVariables(this, locals, _syntax.Declaration);
return(locals.ToImmutable());
}
return(ImmutableArray <LocalSymbol> .Empty);
}
override protected ImmutableArray <LocalSymbol> BuildLocals()
{
var locals = ArrayBuilder <LocalSymbol> .GetInstance();
var declarationOpt = _syntax.Declaration;
if ((declarationOpt != null) && (declarationOpt.Identifier.Kind() != SyntaxKind.None))
{
locals.Add(SourceLocalSymbol.MakeLocal(this.ContainingMemberOrLambda, this, RefKind.None, declarationOpt.Type, declarationOpt.Identifier, LocalDeclarationKind.CatchVariable));
}
if (_syntax.Filter != null)
{
ExpressionVariableFinder.FindExpressionVariables(this, locals, _syntax.Filter.FilterExpression);
}
return(locals.ToImmutableAndFree());
}
override protected ImmutableArray <LocalSymbol> BuildLocals()
{
var locals = ArrayBuilder <LocalSymbol> .GetInstance();
ExpressionSyntax condition;
switch (_syntax.Kind())
{
case SyntaxKind.WhileStatement:
condition = ((WhileStatementSyntax)_syntax).Condition;
break;
case SyntaxKind.DoStatement:
condition = ((DoStatementSyntax)_syntax).Condition;
break;
default:
throw ExceptionUtilities.UnexpectedValue(_syntax.Kind());
}
ExpressionVariableFinder.FindExpressionVariables(this, locals, node: condition);
return(locals.ToImmutableAndFree());
}
protected ImmutableArray <LocalSymbol> BuildLocals(SyntaxList <StatementSyntax> statements, Binder enclosingBinder)
{
#if DEBUG
Binder currentBinder = enclosingBinder;
while (true)
{
if (this == currentBinder)
{
break;
}
currentBinder = currentBinder.Next;
}
#endif
ArrayBuilder <LocalSymbol> locals = ArrayBuilder <LocalSymbol> .GetInstance();
foreach (var statement in statements)
{
var innerStatement = statement;
// drill into any LabeledStatements -- atomic LabelStatements have been bound into
// wrapped LabeledStatements by this point
while (innerStatement.Kind() == SyntaxKind.LabeledStatement)
{
innerStatement = ((LabeledStatementSyntax)innerStatement).Statement;
}
switch (innerStatement.Kind())
{
case SyntaxKind.LocalDeclarationStatement:
{
Binder localDeclarationBinder = enclosingBinder.GetBinder(innerStatement) ?? enclosingBinder;
var decl = (LocalDeclarationStatementSyntax)innerStatement;
LocalDeclarationKind kind;
if (decl.IsConst)
{
kind = LocalDeclarationKind.Constant;
}
else if (decl.UsingKeyword != default(SyntaxToken))
{
kind = LocalDeclarationKind.UsingVariable;
}
else if (decl.IsLet)
{
kind = LocalDeclarationKind.LetVariable;
}
else
{
kind = LocalDeclarationKind.RegularVariable;
}
var localSymbol = MakeLocal(decl.Declaration, kind, localDeclarationBinder);
locals.Add(localSymbol);
// also gather expression-declared variables from the bracketed argument lists and the initializers
ExpressionVariableFinder.FindExpressionVariables(this, locals, decl.Declaration, localDeclarationBinder);
}
break;
case SyntaxKind.ExpressionStatement:
case SyntaxKind.IfStatement:
case SyntaxKind.YieldReturnStatement:
case SyntaxKind.ReturnStatement:
case SyntaxKind.ThrowStatement:
ExpressionVariableFinder.FindExpressionVariables(this, locals, innerStatement, enclosingBinder.GetBinder(innerStatement) ?? enclosingBinder);
break;
case SyntaxKind.SwitchStatement:
var switchStatement = (SwitchStatementSyntax)innerStatement;
ExpressionVariableFinder.FindExpressionVariables(this, locals, innerStatement, enclosingBinder.GetBinder(switchStatement.Expression) ?? enclosingBinder);
break;
case SyntaxKind.LockStatement:
Binder statementBinder = enclosingBinder.GetBinder(innerStatement);
Debug.Assert(statementBinder != null); // Lock always has a binder.
ExpressionVariableFinder.FindExpressionVariables(this, locals, innerStatement, statementBinder);
break;
default:
// no other statement introduces local variables into the enclosing scope
break;
}
}
return(locals.ToImmutableAndFree());
}
