/// <summary>
/// Emit the code to generate the assignment of an expression
/// to an identifier. Various forms are permitted:
///
/// identifier = value
/// identifier(array_indexes) = value
/// array = another_array
/// identifier(substring) = value
///
/// </summary>
/// <param name="cg">A code generator object</param>
public override void Generate(CodeGenerator cg)
{
if (cg == null) {
throw new ArgumentNullException("cg");
}
Symbol sym = Identifier.Symbol;
if (sym.IsArray) {
GenerateSaveToArray(cg);
return;
}
if (Identifier.HasSubstring) {
if (sym.IsParameter) {
cg.Emitter.LoadParameter(sym.ParameterIndex);
} else {
cg.Emitter.LoadLocal(sym.Index);
}
SymType exprType = cg.GenerateExpression(SymType.NONE, ValueExpression);
GenerateSaveSubstring(cg, exprType);
return;
}
if (!sym.IsValueType) {
if (sym.IsParameter) {
cg.Emitter.LoadParameter(sym.ParameterIndex);
} else {
cg.Emitter.LoadLocal(sym.Index);
}
SymType exprType = cg.GenerateExpression(SymType.NONE, ValueExpression);
if (sym.Type == SymType.FIXEDCHAR) {
MethodInfo meth = cg.GetMethodForType(typeof(JComLib.FixedString), "Set", new [] { Symbol.SymTypeToSystemType(exprType) });
cg.Emitter.Call(meth);
}
return;
}
if (sym.IsLocal) {
cg.GenerateExpression(sym.Type, ValueExpression);
cg.StoreLocal(sym);
return;
}
GenerateStoreArgument(cg, sym);
}
