public StandardRule <T> GetRule <T>(CodeContext callerContext, DynamicAction action, object[] args)
{
Contract.RequiresNotNull(action, "action");
//Debug.Assert(action.Kind != ActionKind.GetMember || ((GetMemberAction)action).Name != SymbolTable.StringToId("x"));
StandardRule <T> rule = _ruleCache.FindRule <T>(callerContext, action, args);
if (rule != null)
{
return(rule);
}
NoteRuleCreation(action, args);
IDynamicObject ndo = args[0] as IDynamicObject;
if (ndo != null)
{
rule = ndo.GetRule <T>(action, callerContext, args);
Debug.Assert(rule == null || rule.Target != null && rule.Test != null);
}
rule = rule ?? MakeRule <T>(callerContext, action, args);
Debug.Assert(rule != null && rule.Target != null && rule.Test != null);
#if DEBUG
AstWriter.Dump(rule);
#endif
return(rule);
}
/// <summary>
/// Gets a rule, updates the site that called, and then returns the result of executing the rule.
/// </summary>
/// <typeparam name="T">The type of the DynamicSite the rule is being produced for.</typeparam>
/// <param name="action">The Action the rule is being produced for.</param>
/// <param name="args">The arguments to the rule as provided from the call site at runtime.</param>
/// <param name="callerContext">The CodeContext that is requesting the rule and that should be used for conversions.</param>
/// <param name="rules"></param>
/// <param name="site"></param>
/// <param name="target"></param>
/// <returns>The result of executing the rule.</returns>
internal object UpdateSiteAndExecute <T>(CodeContext callerContext, DynamicAction action, object[] args, object site, ref T target, ref RuleSet <T> rules)
{
Contract.RequiresNotNull(action, "action");
//Debug.Assert(action.Kind != ActionKind.GetMember || ((GetMemberAction)action).Name != SymbolTable.StringToId("x"));
object result;
StandardRule <T> rule = _ruleCache.ExecuteRuleAndUpdateSite <T>(callerContext, action, args, site, ref target, ref rules, out result);
if (rule != null)
{
return(result);
}
NoteRuleCreation(action, args);
for (; ;)
{
IDynamicObject ndo = args[0] as IDynamicObject;
if (ndo != null)
{
rule = ndo.GetRule <T>(action, callerContext, args);
Debug.Assert(rule == null || rule.Target != null && rule.Test != null);
}
rule = rule ?? MakeRule <T>(callerContext, action, args);
Debug.Assert(rule != null && rule.Target != null && rule.Test != null);
#if DEBUG
AstWriter.Dump(rule);
#endif
object[] callArgs = args;
if (args.Length > 6)
{
// BigDynamicSite
callArgs = new object[] { Tuple.MakeTuple(rule.ParamVariables[0].Type, args) };
}
CodeContext tmpCtx = callerContext.Scope.GetTemporaryVariableContext(callerContext, rule.ParamVariables, callArgs);
try {
if ((bool)rule.Test.Evaluate(tmpCtx))
{
if (site != null)
{
DynamicSiteHelpers.UpdateSite <T>(callerContext, site, ref target, ref rules, rule);
}
_ruleCache.AddRule(action, args, rule);
return(rule.Target.Execute(tmpCtx));
}
} finally {
tmpCtx.Scope.TemporaryStorage.Clear();
}
}
}
private static void DumpBlock(CodeBlock block, string id)
{
#if DEBUG
AstWriter.Dump(block, id);
#endif
}
