public override void CodeGen(OutputContext output)
{
string GetName(AstSymbol symbol)
{
return(symbol.Thedef?.MangledName ?? symbol.Thedef?.Name ?? symbol.Name);
}
var allowShortHand = output.Options.Ecma >= 6;
var keyString = Key switch
{
AstString str => str.Value,
AstNumber num => num.Value.ToString("R", CultureInfo.InvariantCulture),
AstSymbolRef _ => null,
AstSymbol key => GetName(key),
_ => null
};
if (allowShortHand &&
Value is AstSymbol value && keyString != null &&
GetName(value) == keyString &&
OutputContext.IsIdentifierString(keyString) &&
OutputContext.IsIdentifier(keyString)
)
{
output.PrintPropertyName(keyString);
}
public virtual string NextMangled(ScopeOptions options, SymbolDef symbolDef)
{
var ext = Enclosed;
while (true)
{
again:
var m = Base54(options.Chars, Cname++);
if (!OutputContext.IsIdentifier(m))
{
continue; // skip over "do"
}
// https://github.com/mishoo/UglifyJS2/issues/242 -- do not
// shadow a name reserved from mangling.
if (options.Reserved.Contains(m))
{
continue;
}
// we must ensure that the mangled name does not shadow a name
// from some parent scope that is referenced in this or in
// inner scopes.
for (var i = 0u; i < ext.Count; i++)
{
var sym = ext[i];
var name = sym.MangledName ?? (sym.Unmangleable(options) ? sym.Name : null);
if (m == name)
{
goto again;
}
}
return(m);
}
}
protected override void Visit(AstNode node)
{
switch (node)
{
case AstLabeledStatement _:
{
// _labelIndex is incremented when we get to the AstLabel
var saveLabelIndex = _labelIndex;
DescendOnce();
_labelIndex = saveLabelIndex;
break;
}
case AstScope scope:
{
foreach (var def in scope.Variables.Values)
{
if (_options.Reserved.Contains(def.Name))
{
continue;
}
_toMangle.Add(def);
}
break;
}
case IMayBeBlockScope blockScope when blockScope.IsBlockScope:
{
foreach (var def in blockScope.BlockScope.Variables.Values)
{
if (_options.Reserved.Contains(def.Name))
{
continue;
}
_toMangle.Add(def);
}
break;
}
case AstLabel label:
{
string name;
do
{
name = AstScope.Base54(_options.Chars, _labelIndex++);
}while (!OutputContext.IsIdentifier(name));
label.MangledName = name;
StopDescending();
break;
}
case AstSymbolCatch symbolCatch:
_toMangle.Add(symbolCatch.Thedef);
break;
}
}
public override void CodeGen(OutputContext output)
{
string GetName(AstSymbol symbol)
{
return(symbol.Thedef?.MangledName ?? symbol.Thedef?.Name ?? symbol.Name);
}
var allowShortHand = output.Options.Shorthand;
string?keyString = null;
if (Key is AstSymbol)
{
keyString = GetName((AstSymbol)Key);
}
else if (Key is AstString str)
{
keyString = str.Value;
}
if (allowShortHand &&
Value is AstSymbol && keyString != null &&
GetName((AstSymbol)Value) == keyString &&
OutputContext.IsIdentifierString(keyString) &&
OutputContext.IsIdentifier(keyString)
)
{
output.PrintPropertyName(keyString);
}
else if (allowShortHand &&
Value is AstDefaultAssign defAssign && keyString != null &&
defAssign.Left is AstSymbol &&
OutputContext.IsIdentifierString(keyString) &&
GetName((AstSymbol)defAssign.Left) == keyString
)
{
output.PrintPropertyName(keyString);
output.Space();
output.Print("=");
output.Space();
defAssign.Right.Print(output);
}
public override void CodeGen(OutputContext output)
{
string GetName(AstSymbol symbol)
{
return(symbol.Thedef?.MangledName ?? symbol.Thedef?.Name ?? symbol.Name);
}
var allowShortHand = output.Options.Shorthand;
var keyString = Key switch
{
AstString str => str.Value,
AstNumber num => num.Value.ToString("R", CultureInfo.InvariantCulture),
AstSymbol key => GetName(key),
_ => null
};
if (allowShortHand &&
Value is AstSymbol && keyString != null &&
GetName((AstSymbol)Value) == keyString &&
OutputContext.IsIdentifierString(keyString) &&
OutputContext.IsIdentifier(keyString)
)
{
output.PrintPropertyName(keyString);
}
else if (allowShortHand &&
Value is AstDefaultAssign defAssign && keyString != null &&
defAssign.Left is AstSymbol &&
OutputContext.IsIdentifierString(keyString) &&
GetName((AstSymbol)defAssign.Left) == keyString
)
{
output.PrintPropertyName(keyString);
output.Space();
output.Print("=");
output.Space();
defAssign.Right.Print(output);
}
