internal sealed override MSA.Expression /*!*/ TransformRead(AstGenerator /*!*/ gen)
{
string debugString = (IsSingletonDeclaration) ? "SINGLETON" : ((this is ClassDefinition) ? "CLASS" : "MODULE") + " " + QualifiedName.Name;
ScopeBuilder outerLocals = gen.CurrentScope;
// definition needs to take place outside the defined lexical scope:
var definition = MakeDefinitionExpression(gen);
var selfVariable = outerLocals.DefineHiddenVariable("#module", typeof(RubyModule));
var parentScope = gen.CurrentScopeVariable;
// inner locals:
ScopeBuilder scope = DefineLocals();
var scopeVariable = scope.DefineHiddenVariable("#scope", typeof(RubyScope));
gen.EnterModuleDefinition(
scope,
selfVariable,
scopeVariable,
IsSingletonDeclaration
);
// transform body:
MSA.Expression transformedBody = Body.TransformRead(gen);
// outer local:
MSA.Expression resultVariable = outerLocals.DefineHiddenVariable("#result", transformedBody.Type);
// begin with new scope
// self = DefineModule/Class(... parent scope here ...)
// <body>
// end
MSA.Expression result = new AstBlock {
gen.DebugMarker(debugString),
Ast.Assign(selfVariable, definition),
scope.CreateScope(
scopeVariable,
Methods.CreateModuleScope.OpCall(
scope.MakeLocalsStorage(),
scope.GetVariableNamesExpression(),
parentScope,
selfVariable
),
Ast.Block(
Ast.Assign(resultVariable, transformedBody),
AstUtils.Empty()
)
),
gen.DebugMarker("END OF " + debugString),
resultVariable
};
gen.LeaveModuleDefinition();
return(result);
}