/// <summary>
/// Emit this code to load the identifier to the stack.
/// </summary>
/// <param name="cg">A CodeGenerator object</param>
/// <param name="returnType">The type required by the caller</param>
/// <returns>The symbol type of the value generated</returns>
public override SymType Generate(CodeGenerator cg, SymType returnType)
{
if (cg == null) {
throw new ArgumentNullException("cg");
}
Symbol sym = Symbol;
SymType thisType;
if (sym.Class == SymClass.INLINE) {
GenerateInline(cg);
thisType = sym.Type;
} else if (sym.IsArray) {
thisType = cg.GenerateLoadFromArray(this, false);
} else if (sym.IsIntrinsic || sym.IsExternal) {
cg.Emitter.LoadFunction(sym);
thisType = SymType.INTEGER;
} else if (sym.IsParameter) {
cg.GenerateLoadArgument(sym);
thisType = sym.Type;
} else if (sym.Class == SymClass.FUNCTION) {
cg.Emitter.LoadFunction(sym);
thisType = SymType.INTEGER;
} else if (sym.IsLocal) {
cg.LoadLocal(sym);
thisType = sym.Type;
} else {
Debug.Assert(false, "Unknown identifier type (not local OR parameter)");
thisType = SymType.NONE;
}
if (HasSubstring) {
thisType = GenerateLoadSubstring(cg);
}
return thisType;
}
