|
public static StoreScope ( |
||
| generator | The IL generator. | |
| return | void | |
/// <summary>
/// Generates code that restores the parent scope as the active scope.
/// </summary>
/// <param name="generator"> The generator to output the CIL to. </param>
/// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param>
internal void GenerateScopeDestruction(ILGenerator generator, OptimizationInfo optimizationInfo)
{
if (this.ExistsAtRuntime == false)
{
return;
}
// Modify the scope variable so it points at the parent scope.
EmitHelpers.LoadScope(generator);
generator.Call(ReflectionHelpers.Scope_ParentScope);
EmitHelpers.StoreScope(generator);
}
/// <summary>
/// Generates code that creates a new scope.
/// </summary>
/// <param name="generator"> The generator to output the CIL to. </param>
/// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param>
internal override void GenerateScopeCreation(ILGenerator generator, OptimizationInfo optimizationInfo)
{
// Allocate storage for each variable if the declarative scope object has been optimized away.
if (optimizationInfo.OptimizeDeclarativeScopes == false)
{
// Create a new declarative scope.
// parentScope
EmitHelpers.LoadScope(generator);
// declaredVariableNames
generator.LoadInt32(this.DeclaredVariableCount);
generator.NewArray(typeof(string));
int i = 0;
foreach (string variableName in this.DeclaredVariableNames)
{
generator.Duplicate();
generator.LoadInt32(i++);
generator.LoadString(variableName);
generator.StoreArrayElement(typeof(string));
}
// DeclarativeScope.CreateRuntimeScope(parentScope, declaredVariableNames)
generator.Call(ReflectionHelpers.DeclarativeScope_CreateRuntimeScope);
// Save the new scope.
EmitHelpers.StoreScope(generator);
}
else
{
// The declarative scope can be optimized away entirely.
foreach (var variable in this.DeclaredVariables)
{
variable.Store = null;
variable.Type = PrimitiveType.Any;
}
// Indicate the scope was not created.
this.ExistsAtRuntime = false;
}
}
/// <summary>
/// Generates code that creates a new scope.
/// </summary>
/// <param name="generator"> The generator to output the CIL to. </param>
/// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param>
internal override void GenerateScopeCreation(ILGenerator generator, OptimizationInfo optimizationInfo)
{
// Create a new runtime object scope.
EmitHelpers.LoadScope(generator); // parent scope
if (this.ScopeObjectExpression == null)
{
EmitHelpers.LoadScriptEngine(generator);
generator.Call(ReflectionHelpers.ScriptEngine_Global);
}
else
{
this.ScopeObjectExpression.GenerateCode(generator, optimizationInfo);
EmitConversion.ToObject(generator, this.ScopeObjectExpression.ResultType, optimizationInfo);
}
generator.LoadBoolean(this.ProvidesImplicitThisValue);
generator.LoadBoolean(this.CanDeclareVariables);
generator.Call(ReflectionHelpers.ObjectScope_CreateRuntimeScope);
// Save the new scope.
EmitHelpers.StoreScope(generator);
}