internal virtual void FinishBind(PythonNameBinder binder) {
List<ClosureInfo> closureVariables = null;
if (FreeVariables != null && FreeVariables.Count > 0) {
LocalParentTuple = Ast.Parameter(Parent.GetClosureTupleType(), "$tuple");
foreach (var variable in _freeVars) {
var parentClosure = Parent._closureVariables;
Debug.Assert(parentClosure != null);
for (int i = 0; i < parentClosure.Length; i++) {
if (parentClosure[i].Variable == variable) {
_variableMapping[variable] = new ClosureExpression(variable, Ast.Property(LocalParentTuple, String.Format("Item{0:D3}", i)), null);
break;
}
}
Debug.Assert(_variableMapping.ContainsKey(variable));
if (closureVariables == null) {
closureVariables = new List<ClosureInfo>();
}
closureVariables.Add(new ClosureInfo(variable, !(this is ClassDefinition)));
}
}
if (Variables != null) {
foreach (PythonVariable variable in Variables.Values) {
if (!HasClosureVariable(closureVariables, variable) &&
!variable.IsGlobal && (variable.AccessedInNestedScope || ExposesLocalVariable(variable))) {
if (closureVariables == null) {
closureVariables = new List<ClosureInfo>();
}
closureVariables.Add(new ClosureInfo(variable, true));
}
if (variable.Kind == VariableKind.Local) {
Debug.Assert(variable.Scope == this);
if (variable.AccessedInNestedScope || ExposesLocalVariable(variable)) {
_variableMapping[variable] = new ClosureExpression(variable, Ast.Parameter(typeof(ClosureCell), variable.Name), null);
} else {
_variableMapping[variable] = Ast.Parameter(typeof(object), variable.Name);
}
}
}
}
if (closureVariables != null) {
_closureVariables = closureVariables.ToArray();
}
// no longer needed
_references = null;
}
internal void CreateVariables(ReadOnlyCollectionBuilder <MSAst.ParameterExpression> locals, List <MSAst.Expression> init)
{
if (Variables != null)
{
foreach (PythonVariable variable in Variables.Values)
{
if (variable.Kind != VariableKind.Global)
{
ClosureExpression closure = GetVariableExpression(variable) as ClosureExpression;
if (closure != null)
{
init.Add(closure.Create());
locals.Add((MSAst.ParameterExpression)closure.ClosureCell);
}
else if (variable.Kind == VariableKind.Local)
{
locals.Add((MSAst.ParameterExpression)GetVariableExpression(variable));
if (variable.ReadBeforeInitialized)
{
init.Add(
AssignValue(
GetVariableExpression(variable),
MSAst.Expression.Field(null, typeof(Uninitialized).GetField(nameof(Uninitialized.Instance)))
)
);
}
}
}
}
}
if (IsClosure)
{
Type tupleType = Parent.GetClosureTupleType();
Debug.Assert(tupleType != null);
init.Add(
MSAst.Expression.Assign(
LocalParentTuple,
MSAst.Expression.Convert(
GetParentClosureTuple(),
tupleType
)
)
);
locals.Add(LocalParentTuple);
}
}
private static void CompileAssignment(LightCompiler compiler, MSAst.Expression variable, Action <LightCompiler> compileValue)
{
var instructions = compiler.Instructions;
ClosureExpression closure = variable as ClosureExpression;
if (closure != null)
{
compiler.Compile(closure.ClosureCell);
}
LookupGlobalVariable lookup = variable as LookupGlobalVariable;
if (lookup != null)
{
compiler.Compile(lookup.CodeContext);
instructions.EmitLoad(lookup.Name);
}
compileValue(compiler);
if (closure != null)
{
instructions.EmitStoreField(ClosureExpression._cellField);
return;
}
if (lookup != null)
{
var setter = typeof(PythonOps).GetMethod(lookup.IsLocal ? nameof(PythonOps.SetLocal) : nameof(PythonOps.SetGlobal));
instructions.Emit(CallInstruction.Create(setter));
return;
}
MSAst.ParameterExpression functionValueParam = variable as MSAst.ParameterExpression;
if (functionValueParam != null)
{
instructions.EmitStoreLocal(compiler.Locals.GetLocalIndex(functionValueParam));
return;
}
var globalVar = variable as PythonGlobalVariableExpression;
if (globalVar != null)
{
instructions.Emit(new PythonSetGlobalInstruction(globalVar.Global));
instructions.EmitPop();
return;
}
Debug.Assert(false, "Unsupported variable type for light compiling function");
}
internal ClosureExpression/*!*/ LiftedParameter(PythonVariable variable, string name) {
ParameterExpression result = Ast.Variable(typeof(object), name);
_params.Add(result);
ClosureExpression closureVar = new ClosureExpression(variable, HiddenVariable(typeof(ClosureCell), name), result);
EnsureLiftedVars();
_liftedVars.Add(new DefinitionClosureInfo(closureVar, true));
return closureVar;
}
internal ClosureExpression/*!*/ LiftedVariable(PythonVariable/*!*/ variable, string/*!*/ name, bool accessInNestedScope) {
ParameterExpression result = HiddenVariable(typeof(ClosureCell), name);
ClosureExpression closureVar = new ClosureExpression(variable, result, null);
EnsureLiftedVars();
_liftedVars.Add(new DefinitionClosureInfo(closureVar, true));
return closureVar;
}
internal virtual void FinishBind(PythonNameBinder binder) {
List<ClosureInfo> closureVariables = null;
if (FreeVariables != null && FreeVariables.Count > 0) {
_localParentTuple = Ast.Parameter(Parent.GetClosureTupleType(), "$tuple");
foreach (var variable in _freeVars) {
var parentClosure = Parent._closureVariables;
Debug.Assert(parentClosure != null);
for (int i = 0; i < parentClosure.Length; i++) {
if (parentClosure[i].Variable == variable) {
_variableMapping[variable] = new ClosureExpression(variable, Ast.Property(_localParentTuple, String.Format("Item{0:D3}", i)), null);
break;
}
}
Debug.Assert(_variableMapping.ContainsKey(variable));
if (closureVariables == null) {
closureVariables = new List<ClosureInfo>();
}
closureVariables.Add(new ClosureInfo(variable, !(this is ClassDefinition)));
}
}
if (Variables != null) {
foreach (PythonVariable variable in Variables.Values) {
if (!HasClosureVariable(closureVariables, variable) &&
!variable.IsGlobal && (variable.AccessedInNestedScope || ExposesLocalVariable(variable))) {
if (closureVariables == null) {
closureVariables = new List<ClosureInfo>();
}
closureVariables.Add(new ClosureInfo(variable, true));
}
if (variable.Kind == VariableKind.Local) {
Debug.Assert(variable.Scope == this);
if (variable.AccessedInNestedScope || ExposesLocalVariable(variable)) {
_variableMapping[variable] = new ClosureExpression(variable, Ast.Parameter(typeof(ClosureCell), variable.Name), null);
} else {
_variableMapping[variable] = Ast.Parameter(typeof(object), variable.Name);
}
}
}
}
if (closureVariables != null) {
_closureVariables = closureVariables.ToArray();
}
// no longer needed
_references = null;
}