//------------------------------------------------------------
// FUNCBREC.EnsureNubHasValue
//
/// <summary>
/// Make sure the HasValue property of System.Nullable<T> is appropriate (and return it).
/// </summary>
/// <param name="treeNode"></param>
/// <returns></returns>
//------------------------------------------------------------
private PROPSYM EnsureNubHasValue(BASENODE treeNode)
{
PROPSYM propSym = Compiler.MainSymbolManager.NullableHasValuePropertySym;
if (propSym == null)
{
AGGSYM nubAggSym = Compiler.GetOptPredefAggErr(PREDEFTYPE.G_OPTIONAL, true);
if (nubAggSym == null)
{
return(null);
}
string name = Compiler.NameManager.GetPredefinedName(PREDEFNAME.HASVALUE);
SYM sym = Compiler.MainSymbolManager.LookupAggMember(
name, nubAggSym, SYMBMASK.PROPSYM);
propSym = sym as PROPSYM;
if (propSym == null ||
propSym.IsStatic ||
propSym.Access != ACCESS.PUBLIC ||
propSym.ParameterTypes.Count > 0 ||
!propSym.ReturnTypeSym.IsPredefType(PREDEFTYPE.BOOL) ||
propSym.GetMethodSym == null)
{
Compiler.Error(treeNode, CSCERRID.ERR_MissingPredefinedMember,
new ErrArg(nubAggSym), new ErrArg(name));
return(null);
}
Compiler.MainSymbolManager.NullableHasValuePropertySym = propSym;
}
return(propSym);
}
//------------------------------------------------------------
// FUNCBREC.EnsureNubGetValOrDef
//
/// <summary>
/// Make sure the HasValue property of System.Nullable<T> is appropriate (and return it).
/// </summary>
/// <param name="treeNode"></param>
/// <returns></returns>
//------------------------------------------------------------
private METHSYM EnsureNubGetValOrDef(BASENODE treeNode)
{
METHSYM methSym = Compiler.MainSymbolManager.NullableGetValOrDefMethodSym;
if (methSym == null)
{
AGGSYM nubAggSym = Compiler.GetOptPredefAggErr(PREDEFTYPE.G_OPTIONAL, true);
if (nubAggSym == null)
{
return(null);
}
string name = Compiler.NameManager.GetPredefinedName(PREDEFNAME.GET_VALUE_OR_DEF);
for (SYM sym = Compiler.MainSymbolManager.LookupAggMember(name, nubAggSym, SYMBMASK.ALL);
;
sym = sym.NextSameNameSym)
{
if (sym == null)
{
Compiler.Error(treeNode, CSCERRID.ERR_MissingPredefinedMember,
new ErrArg(nubAggSym), new ErrArg(name));
return(null);
}
if (sym.IsMETHSYM)
{
methSym = sym as METHSYM;
if (methSym.ParameterTypes.Count == 0 &&
methSym.ParameterTypes.Count == 0 &&
methSym.ReturnTypeSym.IsTYVARSYM &&
!methSym.IsStatic &&
methSym.Access == ACCESS.PUBLIC)
{
break;
}
}
}
Compiler.MainSymbolManager.NullableGetValOrDefMethodSym = methSym;
}
return(methSym);
}