/// <summary>
/// Reads a property name, used in object literals.
/// </summary>
/// <param name="nameType"> Identifies the particular way the property was specified. </param>
/// <returns> An expression that evaluates to the property name. </returns>
private Expression ReadPropertyNameExpression(out PropertyNameType nameType)
{
Expression result;
if (this.nextToken is LiteralToken)
{
// The property name can be a string or a number or (in ES5) a keyword.
if (((LiteralToken)this.nextToken).IsKeyword == true)
{
// false, true or null.
result = new LiteralExpression(this.nextToken.Text);
}
else
{
object literalValue = ((LiteralToken)this.nextToken).Value;
if (literalValue is string || literalValue is int)
result = new LiteralExpression(((LiteralToken)this.nextToken).Value.ToString());
else if (literalValue is double)
result = new LiteralExpression(((double)((LiteralToken)this.nextToken).Value).ToString(CultureInfo.InvariantCulture));
else
throw new JavaScriptException(this.engine, ErrorType.SyntaxError, string.Format("Expected property name but found {0}", Token.ToText(this.nextToken)), this.LineNumber, this.SourcePath);
}
nameType = PropertyNameType.Name;
}
else if (this.nextToken is IdentifierToken)
{
// An identifier is also okay.
var name = ((IdentifierToken)this.nextToken).Name;
if (name == "get")
nameType = PropertyNameType.Get;
else if (name == "set")
nameType = PropertyNameType.Set;
else
nameType = PropertyNameType.Name;
result = new LiteralExpression(name);
}
else if (this.nextToken is KeywordToken)
{
// In ES5 a keyword is also okay.
result = new LiteralExpression(((KeywordToken)this.nextToken).Name);
nameType = PropertyNameType.Name;
}
else if (this.nextToken == PunctuatorToken.LeftBracket)
{
// ES6 computed property.
this.Consume();
result = ParseExpression(PunctuatorToken.RightBracket);
nameType = PropertyNameType.Expression;
}
else
throw new JavaScriptException(this.engine, ErrorType.SyntaxError, string.Format("Expected property name but found {0}", Token.ToText(this.nextToken)), this.LineNumber, this.SourcePath);
// Consume the token.
this.Consume();
// Return the property name.
return result;
}
public SopJsonResolver(PropertyNameType type = PropertyNameType.Default)
{
this._type = type;
}
