protected IEnumerable<CilProduction> DoGetRules(MethodInfo method, CilSymbolRef leftSide)
{
var outcome = CilSymbolRef.Create(method.ReturnType);
if (!object.Equals(outcome, leftSide))
{
return Enumerable.Empty<CilProduction>();
}
var pattern = new List<CilSymbolRef>();
int argShift = 0;
CilSymbolRef thisSymbol = GetThisSymbol();
if (thisSymbol != null)
{
++argShift;
pattern.Add(thisSymbol);
}
var ruleMask = DoGetRuleMask(method);
SubstituteRuleMask(method, pattern, ruleMask);
var rule = new CilProduction(
outcome: outcome,
pattern: pattern,
precedence: GetPrecedence(),
context: GetContext(method, thisSymbol != null),
actionBuilder:
code =>
{
if (thisSymbol != null)
{
code.LdActionArgument(0, method.DeclaringType);
}
// Pass rule-arguments to the rule-method
for (int i = 0; i != method.GetParameters().Length; ++i)
{
var param = method.GetParameters()[i];
int ruleArgIndex = NthEmptySlotIndex(ruleMask, i);
if (thisSymbol != null)
{
++ruleArgIndex;
}
code.LdActionArgument(ruleArgIndex, param.ParameterType);
}
code.Emit(
il =>
{
il.Call(method);
if (method.ReturnType == typeof(void))
{
il.Ldnull();
}
else if (method.ReturnType.IsValueType)
{
il.Box(il.Types.Import(method.ReturnType));
}
return il;
});
return code;
});
return new[] { rule };
}
protected IEnumerable <CilProduction> DoGetRules(MethodInfo method, CilSymbolRef leftSide)
{
var outcome = CilSymbolRef.Create(method.ReturnType);
if (!object.Equals(outcome, leftSide))
{
return(Enumerable.Empty <CilProduction>());
}
var pattern = new List <CilSymbolRef>();
int argShift = 0;
CilSymbolRef thisSymbol = GetThisSymbol();
if (thisSymbol != null)
{
++argShift;
pattern.Add(thisSymbol);
}
var ruleMask = DoGetRuleMask(method);
SubstituteRuleMask(method, pattern, ruleMask);
var rule = new CilProduction(
outcome: outcome,
pattern: pattern,
precedence: GetPrecedence(),
context: GetContext(method, thisSymbol != null),
actionBuilder:
code =>
{
if (thisSymbol != null)
{
code.LdActionArgument(0, method.DeclaringType);
}
// Pass rule-arguments to the rule-method
for (int i = 0; i != method.GetParameters().Length; ++i)
{
var param = method.GetParameters()[i];
int ruleArgIndex = NthEmptySlotIndex(ruleMask, i);
if (thisSymbol != null)
{
++ruleArgIndex;
}
code.LdActionArgument(ruleArgIndex, param.ParameterType);
}
code.Emit(
il =>
{
il.Call(method);
if (method.ReturnType == typeof(void))
{
il.Ldnull();
}
else if (method.ReturnType.IsValueType)
{
il.Box(il.Types.Import(method.ReturnType));
}
return(il);
});
return(code);
});
return(new[] { rule });
}
