private bool CanBeConvertToStringEmpty(IStringLiteral literal)
{
IFieldDeclaration field = literal.Enclosing <IFieldDeclaration>();
if (field.Exists && field.Modifiers.Modifiers.IsConst())
{
return(false);
}
IVariableDeclaration variable = literal.Enclosing <IVariableDeclaration>();
if (variable.Exists && variable.IsConst)
{
return(false);
}
IAttribute attributes = literal.Enclosing <IAttribute>();
if (attributes.Exists)
{
return(false);
}
return(true);
}
private void ReplaceWithStringEmpty(IStringLiteral literal)
{
IMemberAccess isEmpty = literal.Language.MemberAccess(literal.Language.TypeName(literal.Type),
literal.Language.None <IExpression>(),
literal.Language.Identifier("Empty"));
literal.ReplaceWith(isEmpty);
}
private void ReplaceWithStringEmpty(IStringLiteral literal)
{
IMemberAccess isEmpty = literal.Language.MemberAccess(literal.Language.TypeName(literal.Type),
literal.Language.None<IExpression>(),
literal.Language.Identifier("Empty"));
literal.ReplaceWith(isEmpty);
}
private static int FitsOnOneLine(IStringLiteral expression, int remainingSpace)
{
if (expression.LiteralKind != LiteralExpressionKind.None)
{
remainingSpace -= 2;
}
return(remainingSpace - expression.Text.Length);
}
private bool CanBeConvertToStringEmpty(IStringLiteral literal)
{
IFieldDeclaration field = literal.Enclosing<IFieldDeclaration>();
if (field.Exists && field.Modifiers.Modifiers.IsConst())
{
return false;
}
IVariableDeclaration variable = literal.Enclosing<IVariableDeclaration>();
if (variable.Exists && variable.IsConst)
{
return false;
}
IAttribute attributes = literal.Enclosing<IAttribute>();
if (attributes.Exists)
{
return false;
}
return true;
}
private IStringLiteral EatStringLiteral(IStringLiteral stringLiteral)
{
switch (tokens[0].type) {
case Global.DataType.ENDSTATEMENT: return stringLiteral;
case Global.DataType.STRING:
stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, tokens[0].value));
CutData(1);
return EatStringLiteral(stringLiteral);
case Global.DataType.STRINGINTERPOLATION:
CutData(1);
stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, EatExpression()));
return EatStringLiteral(stringLiteral);
case Global.DataType.STRINGINTERPOLATIONEND:
CutData(1);
return stringLiteral;
case Global.DataType.ESCAPEDCHARACTER:
switch (tokens[0].value)
{
case "\\0": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.Null)); break;
case "\\\\": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.Backslash)); break;
case "\\t": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.HorizontalTab)); break;
case "\\n": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.LineFeed)); break;
case "\\r": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.CarriageReturn)); break;
case "\\\"": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.DoubleQuote)); break;
case "\\'": stringLiteral.Elements.Add(new StringElement(stringLiteral.Context, Global.EscapedCharacter.SingleQuote)); break;
default: Swift.error(new InternalError("Trying to parse the unrecognized character " + tokens[0].value)); break;
}
CutData(1);
return EatStringLiteral(stringLiteral);
}
Swift.error(new InternalError("Trying to parse a string literal containing illegal tokens"));
return null;
}
