> -----Original Message----- > From: P T Withington [mailto:[EMAIL PROTECTED] On Behalf Of > P T Withington > Sent: 20. mars 2008 07:41 > To: Lars Hansen > Cc: es4-discuss Discuss > Subject: Re: ES4 draft: Error classes > > +1 to Lars Error context/backTrace proposal. > > Can we also have something like #file and #line, so that the > various Javascript translators (ours, Dojo, various > compressors, etc.) can relate context back to the original > source, rather than the executed source?
Strawman proposal that avoids compounding our syntax woes. Syntax: A comment of this form preceded on the same line only by whitespace: /**es:context=<scheme>;<data>;<line>*/ Space characters are not allowed anywhere except within <scheme> and <data>, where it is interpreted literally. Line terminators are not allowed anywhere. Line terminator characters in scheme and data should be encoded using \x or \u syntax. Semantics: The meaning of scheme, data, and line are as for the context/backTrace proposal. The intent is that the values provided here override the values that would be provided by the implementation in a source context object. A value for scheme, data, and line field must only be provided if values are provided for the fields to its left. Field values default to the values from the previous instance of the directive. Initial fields values are the scheme and data the implementation would report absent any annotation, and a line of 1. Conformance: An ES4 implementation is free not to support this facility at all. To support this facility means to understand the directives and to report the values provided in the directives in error messages and in the context/backTrace facility, if that is supported. Example: /**es:context=file name;test.es;1*/ /**es:context=;;7*/ --lars _______________________________________________ Es4-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es4-discuss
