private Type CompileNode(CompilationContext ctx, IBranch b)
{
#if FORCE_SINGLE_THREADED
Application.DoEvents();
#endif
// vault modifications guard
if (!ctx.StillInTouch()) throw new CompilerOutOfTouchException();
// type
var t_parent = ctx.PrevSuccessfulType(b.VPath) ?? typeof(CompiledNode);
(t_parent == typeof(CompiledNode) ^ (ctx.CumulativeCompilation && ctx.ScheduledCumulations.ContainsKey(b))).AssertTrue();
var t = _mod.DefineType(ctx.RequestName(b.GetClassName()), TA.Public, t_parent);
#if TRACE
try
{
#endif
// constructor
var ctor = t.DefineConstructor(MA.PublicCtor, CallingConventions.Standard, typeof(CompiledNode).MkArray());
ctor.DefineParameter(1, ParmA.None, "parent");
ctor.il().ld_args(2).basector(typeof(CompiledNode), typeof(CompiledNode)).ret();
// the [VPath(...)] attribute for reflection-based analysis
t.SetCustomAttribute(new CustomAttributeBuilder(
typeof(VPathAttribute).GetConstructor(typeof(String).MkArray()),
b.VPath.ToString().MkArray()));
// the [Revision(...)] attribute for reflection-based analysis
t.SetCustomAttribute(new CustomAttributeBuilder(
typeof(RevisionAttribute).GetConstructor(new[] { typeof(ulong) }),
new object[] { Vault.Revision }));
// the [Seq(...)] attribute for synchronization and namespacing purposes
t.SetCustomAttribute(new CustomAttributeBuilder(
typeof(SeqAttribute).GetConstructor(new[] { typeof(int) }),
new object[] { ctx.WorkerSeq }));
// trivial overrides
t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("Name"))
.il()
.ldstr(b.GetClassName() + "_seq" + ctx.WorkerSeq)
.ret();
t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("VPath"))
.il()
.ldstr(b.VPath)
.newobj(typeof(VPath), typeof(String))
.ret();
t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("Revision"))
.il()
.ldc_i8(Vault.Revision)
.ret();
t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("Seq"))
.il()
.ldc_i4(ctx.WorkerSeq)
.ret();
ImplementCreateChildren(ctx, t, b);
ImplementCreateProperties(ctx, t, b);
// finalize the type
var t_created = t.CreateType();
_types.Add(t_created);
// create a factory method for this class
var factoryName = b.GetClassName().Substring(b.GetClassName().LastIndexOf(".") + 1);
var factoryMethod = ctx.FactoryType.DefineMethod("Create_" + ctx.RequestName(factoryName), MA.PublicStatic, typeof(CompiledNode), typeof(CompiledNode).MkArray());
factoryMethod.SetCustomAttribute(new CustomAttributeBuilder(
typeof(VPathAttribute).GetConstructor(typeof(String).MkArray()),
b.VPath.ToString().MkArray()));
factoryMethod.il().ldarg(0).newobj(t_created, typeof(CompiledNode).MkArray()).ret();
// register self within the factory
ctx.Factory.il()
.ldarg(0)
.ldstr(b.VPath.ToString())
.newobj(typeof(VPath), typeof(String))
.ldnull()
.ldftn(factoryMethod)
.newobj(typeof(Func<CompiledNode, CompiledNode>), typeof(Object), typeof(IntPtr))
.callvirt(typeof(NodeFactory).GetMethod("Register", BF.All));
return t_created;
#if TRACE
}
finally
{
// attempts to finalize the type so that we can dump an assembly to disk after certain exceptions
if (!t.IsCreated())
{
Action<Action> neverFail = code => {try{code();}catch{}};
neverFail(() => t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("Name")).il().ldnull().ret());
neverFail(() => t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("VPath")).il().ldnull().ret());
neverFail(() => t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("Revision")).il().ldc_i8(0).ret());
neverFail(() => t.DefineOverrideReadonly(typeof(CompiledNode).GetProperty("Seq")).il().ldc_i4(0).ret());
neverFail(() => t.DefineOverride(typeof(CompiledNode).GetMethod("CreateChildren", BF.All)).il().ret());
neverFail(() => t.DefineOverride(typeof(CompiledNode).GetMethod("CreateProperties", BF.All)).il().ret());
neverFail(() => ctx.CCs[t].il().ret());
neverFail(() => ctx.CPs[t].il().ret());
neverFail(() => t.CreateType());
}
}
#endif
}
