|
private KeywordLookupSiteField ( int i ) : |
||
| i | int | |
| return | ||
public void Emit(RHC rhc, ObjExpr objx, CljILGen ilg)
{
Label endLabel = ilg.DefineLabel();
Label faultLabel = ilg.DefineLabel();
GenContext.EmitDebugInfo(ilg, _spanMap);
LocalBuilder thunkLoc = ilg.DeclareLocal(typeof(ILookupThunk));
LocalBuilder targetLoc = ilg.DeclareLocal(typeof(Object));
LocalBuilder resultLoc = ilg.DeclareLocal(typeof(Object));
GenContext.SetLocalName(thunkLoc, "thunk");
GenContext.SetLocalName(targetLoc, "target");
GenContext.SetLocalName(resultLoc, "result");
// TODO: Debug info
// pseudo-code:
// ILookupThunk thunk = objclass.ThunkField(i)
// object target = ...code...
// object val = thunk.get(target)
// if ( val != thunk )
// return val
// else
// KeywordLookupSite site = objclass.SiteField(i)
// thunk = site.fault(target)
// objclass.ThunkField(i) = thunk
// val = thunk.get(target)
// return val
ilg.EmitFieldGet(objx.ThunkField(_siteIndex)); // thunk
ilg.Emit(OpCodes.Stloc, thunkLoc); // (thunkLoc <= thunk)
_target.Emit(RHC.Expression, objx, ilg); // target
ilg.Emit(OpCodes.Stloc, targetLoc); // (targetLoc <= target)
ilg.Emit(OpCodes.Ldloc, thunkLoc);
ilg.Emit(OpCodes.Ldloc, targetLoc);
ilg.EmitCall(Compiler.Method_ILookupThunk_get); // result
ilg.Emit(OpCodes.Stloc, resultLoc); // (resultLoc <= result)
ilg.Emit(OpCodes.Ldloc, thunkLoc);
ilg.Emit(OpCodes.Ldloc, resultLoc);
ilg.Emit(OpCodes.Beq, faultLabel);
ilg.Emit(OpCodes.Ldloc, resultLoc); // result
ilg.Emit(OpCodes.Br, endLabel);
ilg.MarkLabel(faultLabel);
ilg.EmitFieldGet(objx.KeywordLookupSiteField(_siteIndex)); // site
ilg.Emit(OpCodes.Ldloc, targetLoc); // site, target
ilg.EmitCall(Compiler.Method_ILookupSite_fault); // new-thunk
ilg.Emit(OpCodes.Dup); // new-thunk, new-thunk
ilg.EmitFieldSet(objx.ThunkField(_siteIndex)); // new-thunk
ilg.Emit(OpCodes.Ldloc, targetLoc); // new-thunk, target
ilg.EmitCall(Compiler.Method_ILookupThunk_get); // result
ilg.MarkLabel(endLabel); // result
if (rhc == RHC.Statement)
{
ilg.Emit(OpCodes.Pop);
}
}
public Expression GenCode(RHC rhc, ObjExpr objx, GenContext context)
{
//if (context.Mode == CompilerMode.Immediate)
if (objx.FnMode == FnMode.Light )
{
// This will emit a plain Keyword reference, rather than a callsite.
InvokeExpr ie = new InvokeExpr(_source, _spanMap, (Symbol)_tag, _kw, RT.vector(_target));
return ie.GenCode(rhc, objx, context);
}
else
{
// pseudo-code:
// ILookupThunk thunk = objclass.ThunkField(i)
// object target = ...code...
// object val = thunk.get(target)
// if ( val != thunk )
// return val
// else
// KeywordLookupSite site = objclass.SiteField(i)
// thunk = site.fault(target)
// objclass.ThunkField(i) = thunk
// val = thunk.get(target)
// return val
ParameterExpression thunkParam = Expression.Parameter(typeof(ILookupThunk), "thunk");
ParameterExpression targetParam = Expression.Parameter(typeof(object), "target");
ParameterExpression valParam = Expression.Parameter(typeof(Object), "val");
ParameterExpression siteParam = Expression.Parameter(typeof(KeywordLookupSite), "site");
Expression assignThunkFromField = Expression.Assign(thunkParam, Expression.Field(null, objx.ThunkField(_siteIndex)));
Expression assignThunkFromSite = Expression.Assign(thunkParam, Expression.Call(siteParam, Compiler.Method_ILookupSite_fault, targetParam));
Expression assignFieldFromThunk = Expression.Assign(Expression.Field(null, objx.ThunkField(_siteIndex)), thunkParam);
Expression assignTarget = Expression.Assign(targetParam,_target.GenCode(RHC.Expression, objx, context));
Expression assignVal = Expression.Assign(valParam, Expression.Call(thunkParam, Compiler.Method_ILookupThunk_get,targetParam));
Expression assignSite = Expression.Assign(siteParam, Expression.Field(null, objx.KeywordLookupSiteField(_siteIndex)));
Expression block =
Expression.Block(typeof(Object), new ParameterExpression[] { thunkParam, valParam, targetParam },
assignThunkFromField,
assignTarget,
assignVal,
Expression.IfThen(
Expression.Equal(valParam, thunkParam),
Expression.Block(typeof(Object), new ParameterExpression[] { siteParam },
assignSite,
assignThunkFromSite,
assignFieldFromThunk,
assignVal)),
valParam);
block = Compiler.MaybeAddDebugInfo(block, _spanMap, context.IsDebuggable);
return block;
}
}
public Expression GenCode(RHC rhc, ObjExpr objx, GenContext context)
{
//if (context.Mode == CompilerMode.Immediate)
if (objx.FnMode == FnMode.Light )
{
// This will emit a plain Keyword reference, rather than a callsite.
InvokeExpr ie = new InvokeExpr(_source, _spanMap, (Symbol)_tag, _kw, RT.vector(_target));
return ie.GenCode(rhc, objx, context);
}
else
{
ParameterExpression thunkParam = Expression.Parameter(typeof(ILookupThunk), "thunk");
Expression assignThunk = Expression.Assign(thunkParam, Expression.Field(null, objx.ThunkField(_siteIndex)));
ParameterExpression targetParam = Expression.Parameter(typeof(object), "target");
Expression assignTarget = Expression.Assign(targetParam,_target.GenCode(RHC.Expression, objx, context));
ParameterExpression valParam = Expression.Parameter(typeof(Object), "val");
Expression assignVal = Expression.Assign(valParam, Expression.Call(thunkParam, Compiler.Method_ILookupThunk_get,targetParam));
ParameterExpression siteParam = Expression.Parameter(typeof(KeywordLookupSite), "site");
Expression assignSite = Expression.Assign(siteParam, Expression.Field(null, objx.KeywordLookupSiteField(_siteIndex)));
Expression block =
Expression.Block(typeof(Object), new ParameterExpression[] { thunkParam, valParam, targetParam },
assignThunk,
assignTarget,
assignVal,
Expression.Condition(
Expression.NotEqual(valParam, thunkParam),
valParam,
Expression.Block(typeof(Object), new ParameterExpression[] { siteParam },
assignSite,
Expression.Call(siteParam, Compiler.Method_ILookupSite_fault, targetParam, objx.ThisParam)),
typeof(object)));
block = Compiler.MaybeAddDebugInfo(block, _spanMap);
return block;
}
}
public void Emit(RHC rhc, ObjExpr objx, CljILGen ilg)
{
if (objx.FnMode == FnMode.Light)
{
// This will emit a plain Keyword reference, rather than a callsite.
InvokeExpr ie = new InvokeExpr(_source, _spanMap, (Symbol)_tag, _kw, RT.vector(_target));
ie.Emit(rhc, objx, ilg);
}
else
{
Label endLabel = ilg.DefineLabel();
Label faultLabel = ilg.DefineLabel();
GenContext.EmitDebugInfo(ilg, _spanMap);
LocalBuilder thunkLoc = ilg.DeclareLocal(typeof(ILookupThunk));
LocalBuilder targetLoc = ilg.DeclareLocal(typeof(Object));
LocalBuilder resultLoc = ilg.DeclareLocal(typeof(Object));
GenContext.SetLocalName(thunkLoc, "thunk");
GenContext.SetLocalName(targetLoc, "target");
GenContext.SetLocalName(resultLoc, "result");
// TODO: Debug info
// pseudo-code:
// ILookupThunk thunk = objclass.ThunkField(i)
// object target = ...code...
// object val = thunk.get(target)
// if ( val != thunk )
// return val
// else
// KeywordLookupSite site = objclass.SiteField(i)
// thunk = site.fault(target)
// objclass.ThunkField(i) = thunk
// val = thunk.get(target)
// return val
ilg.EmitFieldGet(objx.ThunkField(_siteIndex)); // thunk
ilg.Emit(OpCodes.Stloc, thunkLoc); // (thunkLoc <= thunk)
_target.Emit(RHC.Expression, objx, ilg); // target
ilg.Emit(OpCodes.Stloc, targetLoc); // (targetLoc <= target)
ilg.Emit(OpCodes.Ldloc, thunkLoc);
ilg.Emit(OpCodes.Ldloc, targetLoc);
ilg.EmitCall(Compiler.Method_ILookupThunk_get); // result
ilg.Emit(OpCodes.Stloc, resultLoc); // (resultLoc <= result)
ilg.Emit(OpCodes.Ldloc, thunkLoc);
ilg.Emit(OpCodes.Ldloc, resultLoc);
ilg.Emit(OpCodes.Beq, faultLabel);
ilg.Emit(OpCodes.Ldloc, resultLoc); // result
ilg.Emit(OpCodes.Br, endLabel);
ilg.MarkLabel(faultLabel);
ilg.EmitFieldGet(objx.KeywordLookupSiteField(_siteIndex)); // site
ilg.Emit(OpCodes.Ldloc, targetLoc); // site, target
ilg.EmitCall(Compiler.Method_ILookupSite_fault); // new-thunk
ilg.Emit(OpCodes.Dup); // new-thunk, new-thunk
ilg.EmitFieldSet(objx.ThunkField(_siteIndex)); // new-thunk
ilg.Emit(OpCodes.Ldloc, targetLoc); // new-thunk, target
ilg.EmitCall(Compiler.Method_ILookupThunk_get); // result
ilg.MarkLabel(endLabel); // result
if (rhc == RHC.Statement)
ilg.Emit(OpCodes.Pop);
}
}
public Expression GenCode(RHC rhc, ObjExpr objx, GenContext context)
{
//if (context.Mode == CompilerMode.Immediate)
if (objx.FnMode == FnMode.Light)
{
// This will emit a plain Keyword reference, rather than a callsite.
InvokeExpr ie = new InvokeExpr(_source, _spanMap, (Symbol)_tag, _kw, RT.vector(_target));
return(ie.GenCode(rhc, objx, context));
}
else
{
// pseudo-code:
// ILookupThunk thunk = objclass.ThunkField(i)
// object target = ...code...
// object val = thunk.get(target)
// if ( val != thunk )
// return val
// else
// KeywordLookupSite site = objclass.SiteField(i)
// thunk = site.fault(target)
// objclass.ThunkField(i) = thunk
// val = thunk.get(target)
// return val
ParameterExpression thunkParam = Expression.Parameter(typeof(ILookupThunk), "thunk");
ParameterExpression targetParam = Expression.Parameter(typeof(object), "target");
ParameterExpression valParam = Expression.Parameter(typeof(Object), "val");
ParameterExpression siteParam = Expression.Parameter(typeof(KeywordLookupSite), "site");
Expression assignThunkFromField = Expression.Assign(thunkParam, Expression.Field(null, objx.ThunkField(_siteIndex)));
Expression assignThunkFromSite = Expression.Assign(thunkParam, Expression.Call(siteParam, Compiler.Method_ILookupSite_fault, targetParam));
Expression assignFieldFromThunk = Expression.Assign(Expression.Field(null, objx.ThunkField(_siteIndex)), thunkParam);
Expression assignTarget = Expression.Assign(targetParam, _target.GenCode(RHC.Expression, objx, context));
Expression assignVal = Expression.Assign(valParam, Expression.Call(thunkParam, Compiler.Method_ILookupThunk_get, targetParam));
Expression assignSite = Expression.Assign(siteParam, Expression.Field(null, objx.KeywordLookupSiteField(_siteIndex)));
Expression block =
Expression.Block(typeof(Object), new ParameterExpression[] { thunkParam, valParam, targetParam },
assignThunkFromField,
assignTarget,
assignVal,
Expression.IfThen(
Expression.Equal(valParam, thunkParam),
Expression.Block(typeof(Object), new ParameterExpression[] { siteParam },
assignSite,
assignThunkFromSite,
assignFieldFromThunk,
assignVal)),
valParam);
block = Compiler.MaybeAddDebugInfo(block, _spanMap, context.IsDebuggable);
return(block);
}
}
