internal PhpTypeCode EmitArrayKey(ChainBuilder chain, Expression key)
{
PhpTypeCode result;
if (key != null)
{
if (chain != null) chain.Create();
// convert the key into integer if necessary and possible in compile time
IntStringKey array_key;
if (key.HasValue() && Convert.ObjectToArrayKey(key.GetValue(), out array_key) && array_key.IsInteger)
{
il.LdcI4(array_key.Integer);
result = PhpTypeCode.Integer;
}
else
{
// Emit index and box the result
switch (result = key.Emit(this))
{
case PhpTypeCode.Integer:
break;
case PhpTypeCode.String:
break;
default:
EmitBoxing(result);
result = PhpTypeCode.Object;
break;
}
}
if (chain != null) chain.End();
}
else
result = PhpTypeCode.Invalid;
return result;
}
/// <summary>
/// Initializes a new instance of the <see cref="PHP.Core.CodeGenerator"/> class.
/// </summary>
public CodeGenerator(CompilationContext/*!*/ context)
{
ScriptContextPlace = new IndexedPlace(PlaceHolder.Argument, ScriptBuilder.ArgContext);
TypeContextPlace = new IndexedPlace(PlaceHolder.Argument, ScriptBuilder.ArgIncluder);
this.context = context;
this.il = null;
this.currentVariablesTable = null;
this.currentLabels = null;
this.locationStack = new CompilerLocationStack();
this.branchingStack = new BranchingStack(this);
this.chainBuilder = new ChainBuilder(this);
}