public override void ExitAssign(ssuplParser.AssignContext context)
{
// assign : ID EQ expr
string vname = context.ID().GetText();
if (!symtable.Contains(vname))
{
throw new Exception("Undeclared variable: " + vname);
}
code.Put(context,
code.Get(context.expr()),
"pop rax",
$"mov [${symtable.Get(vname).location}],rax"
);
}
public override void ExitAssign(ssuplParser.AssignContext context)
{
// assign : ID EQ expr
string vname = context.ID().GetText();
if (symtable.Get(vname).type != type(context.expr()))//invalid input check
{
throw new Exception("Type mismatch");
}
if (!symtable.Contains(vname))
{
throw new Exception("Undeclared variable: " + vname);
}
code.Put(context,
code.Get(context.expr()),
"pop rax",
$"mov [${symtable.Get(vname).location}],rax" //,
//"push rax"
);
}
/// <summary>
/// Exit a parse tree produced by <see cref="ssuplParser.assign"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitAssign([NotNull] ssuplParser.AssignContext context)
{
}
