internal PlaceholderLocalBinder(
CSharpSyntaxNode syntax,
ImmutableArray <Alias> aliases,
MethodSymbol containingMethod,
EETypeNameDecoder typeNameDecoder,
Binder next) :
base(next)
{
_syntax = syntax;
_containingMethod = containingMethod;
var compilation = next.Compilation;
var sourceAssembly = compilation.SourceAssembly;
var aliasesBuilder = ArrayBuilder <LocalSymbol> .GetInstance(aliases.Length);
var lowercaseBuilder = ImmutableDictionary.CreateBuilder <string, LocalSymbol>();
foreach (Alias alias in aliases)
{
var local = PlaceholderLocalSymbol.Create(
typeNameDecoder,
containingMethod,
sourceAssembly,
alias);
aliasesBuilder.Add(local);
if (alias.Kind == DkmClrAliasKind.ReturnValue)
{
lowercaseBuilder.Add(local.Name.ToLower(), local);
}
}
_lowercaseReturnValueAliases = lowercaseBuilder.ToImmutableDictionary();
_aliases = aliasesBuilder.ToImmutableAndFree();
}
private static void CreateLocal(
CSharpCompilation compilation,
HashSet <LocalSymbol> declaredLocals,
ArrayBuilder <BoundStatement> statements,
LocalSymbol local,
SyntaxNode syntax,
DiagnosticBag diagnostics)
{
// CreateVariable(Type type, string name)
var method = PlaceholderLocalSymbol.GetIntrinsicMethod(compilation, ExpressionCompilerConstants.CreateVariableMethodName);
if ((object)method == null)
{
diagnostics.Add(ErrorCode.ERR_DeclarationExpressionNotPermitted, local.Locations[0]);
return;
}
declaredLocals.Add(local);
var typeType = compilation.GetWellKnownType(WellKnownType.System_Type);
var stringType = compilation.GetSpecialType(SpecialType.System_String);
var guidConstructor = (MethodSymbol)compilation.GetWellKnownTypeMember(WellKnownMember.System_Guid__ctor);
var type = new BoundTypeOfOperator(syntax, new BoundTypeExpression(syntax, aliasOpt: null, type: local.Type), null, typeType);
var name = new BoundLiteral(syntax, ConstantValue.Create(local.Name), stringType);
bool hasCustomTypeInfoPayload;
var customTypeInfoPayload = GetCustomTypeInfoPayload(local, syntax, compilation, out hasCustomTypeInfoPayload);
var customTypeInfoPayloadId = GetCustomTypeInfoPayloadId(syntax, guidConstructor, hasCustomTypeInfoPayload);
var call = BoundCall.Synthesized(
syntax,
receiverOpt: null,
method: method,
arguments: ImmutableArray.Create(type, name, customTypeInfoPayloadId, customTypeInfoPayload));
statements.Add(new BoundExpressionStatement(syntax, call));
}
private static void RewriteLocalDeclaration(
CSharpCompilation compilation,
EENamedTypeSymbol container,
HashSet <LocalSymbol> declaredLocals,
ArrayBuilder <BoundStatement> statements,
BoundLocalDeclaration node)
{
Debug.Assert(node.ArgumentsOpt.IsDefault);
var local = node.LocalSymbol;
var syntax = node.Syntax;
declaredLocals.Add(local);
var typeType = compilation.GetWellKnownType(WellKnownType.System_Type);
var stringType = compilation.GetSpecialType(SpecialType.System_String);
var guidConstructor = (MethodSymbol)compilation.GetWellKnownTypeMember(WellKnownMember.System_Guid__ctor);
// CreateVariable(Type type, string name)
var method = PlaceholderLocalSymbol.GetIntrinsicMethod(compilation, ExpressionCompilerConstants.CreateVariableMethodName);
var type = new BoundTypeOfOperator(syntax, new BoundTypeExpression(syntax, aliasOpt: null, type: local.Type), null, typeType);
var name = new BoundLiteral(syntax, ConstantValue.Create(local.Name), stringType);
bool hasCustomTypeInfoPayload;
var customTypeInfoPayload = GetCustomTypeInfoPayload(local, syntax, compilation, out hasCustomTypeInfoPayload);
var customTypeInfoPayloadId = GetCustomTypeInfoPayloadId(syntax, guidConstructor, hasCustomTypeInfoPayload);
var call = BoundCall.Synthesized(
syntax,
receiverOpt: null,
method: method,
arguments: ImmutableArray.Create(type, name, customTypeInfoPayloadId, customTypeInfoPayload));
statements.Add(new BoundExpressionStatement(syntax, call));
var initializer = node.InitializerOpt;
if (initializer != null)
{
// Generate assignment to local. The assignment will
// be rewritten in PlaceholderLocalRewriter.
var assignment = new BoundAssignmentOperator(
syntax,
new BoundLocal(syntax, local, constantValueOpt: null, type: local.Type),
initializer,
RefKind.None,
local.Type);
statements.Add(new BoundExpressionStatement(syntax, assignment));
}
}
