/// <summary>
/// Creates a value tuple expression containing the given expressions.
/// </summary>
private TypedExpression CreateValueTupleExpression(params TypedExpression[] expressions) =>
new TypedExpression(
ExpressionKind.NewValueTuple(expressions.ToImmutableArray()),
TypeArgsResolution.Empty,
ResolvedType.New(ResolvedTypeKind.NewTupleType(expressions.Select(expr => expr.ResolvedType).ToImmutableArray())),
new InferredExpressionInformation(false, expressions.Any(exp => exp.InferredInformation.HasLocalQuantumDependency)),
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null);
internal static TypedExpression CreateValueTupleExpression(params TypedExpression[] expressions) =>
new TypedExpression
(
ExpressionKind.NewValueTuple(expressions.ToImmutableArray()),
TypeArgsResolution.Empty,
ResolvedType.New(ResolvedTypeKind.NewTupleType(expressions.Select(expr => expr.ResolvedType).ToImmutableArray())),
new InferredExpressionInformation(false, false),
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null
);
/// <summary>
/// Generates a new operation with the body's contents. All the known variables at the
/// start of the block will become parameters to the new operation, and the operation
/// will have all the valid type parameters of the calling context as type parameters.
/// The generated operation is returned, along with a call to the new operation is
/// also returned with all the type parameters and known variables being forwarded to
/// the new operation as arguments.
///
/// The given body should be validated with the SharedState.IsValidScope before using this function.
/// </summary>
public bool LiftBody(QsScope body, out QsCallable callable, out QsStatement callStatement)
{
if (!this.IsValidScope)
{
callable = null;
callStatement = null;
return(false);
}
var(generatedOp, originalArgumentType) = this.GenerateOperation(body);
var generatedOpType = ResolvedType.New(ResolvedTypeKind.NewOperation(
Tuple.Create(
originalArgumentType,
ResolvedType.New(ResolvedTypeKind.UnitType)),
generatedOp.Signature.Information));
// Forward the type parameters of the parent callable to the type arguments of the call to the generated operation.
var typeArguments = this.CurrentCallable.TypeParameters;
var generatedOpId = new TypedExpression(
ExpressionKind.NewIdentifier(
Identifier.NewGlobalCallable(generatedOp.FullName),
typeArguments),
typeArguments.IsNull
? TypeArgsResolution.Empty
: typeArguments.Item
.Select(type => Tuple.Create(generatedOp.FullName, ((ResolvedTypeKind.TypeParameter)type.Resolution).Item.TypeName, type))
.ToImmutableArray(),
generatedOpType,
new InferredExpressionInformation(false, false),
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null);
var knownSymbols = body.KnownSymbols.Variables;
TypedExpression arguments = null;
if (knownSymbols.Any())
{
var argumentArray = knownSymbols
.Select(var => new TypedExpression(
ExpressionKind.NewIdentifier(
Identifier.NewLocalVariable(var.VariableName),
QsNullable <ImmutableArray <ResolvedType> > .Null),
TypeArgsResolution.Empty,
var.Type,
var.InferredInformation,
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null))
.ToImmutableArray();
arguments = new TypedExpression(
ExpressionKind.NewValueTuple(argumentArray),
TypeArgsResolution.Empty,
ResolvedType.New(ResolvedTypeKind.NewTupleType(argumentArray.Select(expr => expr.ResolvedType).ToImmutableArray())),
new InferredExpressionInformation(false, argumentArray.Any(exp => exp.InferredInformation.HasLocalQuantumDependency)),
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null);
}
else
{
arguments = new TypedExpression(
ExpressionKind.UnitValue,
TypeArgsResolution.Empty,
ResolvedType.New(ResolvedTypeKind.UnitType),
new InferredExpressionInformation(false, false),
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null);
}
var call = new TypedExpression(
ExpressionKind.NewCallLikeExpression(generatedOpId, arguments),
typeArguments.IsNull
? TypeArgsResolution.Empty
: typeArguments.Item
.Select(type => Tuple.Create(this.CurrentCallable.Callable.FullName, ((ResolvedTypeKind.TypeParameter)type.Resolution).Item.TypeName, type))
.ToImmutableArray(),
ResolvedType.New(ResolvedTypeKind.UnitType),
new InferredExpressionInformation(false, true),
QsNullable <Tuple <QsPositionInfo, QsPositionInfo> > .Null);
// set output parameters
callable = generatedOp;
callStatement = new QsStatement(
QsStatementKind.NewQsExpressionStatement(call),
LocalDeclarations.Empty,
QsNullable <QsLocation> .Null,
QsComments.Empty);
return(true);
}
