Class: ParseErrorNode

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • accessing
  • enumeration
  • printing & storing
  • queries
  • visiting

Inheritance:

   Object
   |
   +--ParseNode
      |
      +--ParseErrorNode

Package:

stx:libcomp

Category:

System-Compiler-Support

Version:

rev: 1.12 date: 2022/02/23 08:04:28

user: cg

file: ParseErrorNode.st directory: libcomp

module: stx stc-classLibrary: libcomp

Description:

ParseErrorNode represent an erroneous portion of the source code.
Error nodes are created by error-tolerant parser. So far the only
user is SmallSenseParser (https://bitbucket.org/janvrany/jv-smallsense).

Error nodes may have children which may not be error nodes. Such
children represent a part of the code that actuallu could be parsed.
Example:

    printValue: value
        Transcript show: (value printStringRadix: 12
        Transcript cr

The tolerant parser may create tree like:
    statement (StatementNode)
        #show: (MessageNode)
            Transcript (ContantNode)
            <<error>> (ParseErrorNode)
                #printStringRadix: (MessageNode)
                    value (VariableNode)
                    12 (ContantNode)
    statement (StatementNode)
        #cr (MessageNode)
            Transcript (ContantNode)


[instance variables:]

[class variables:]

copyright
COPYRIGHT (c) 2004 by eXept Software AG
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 errorString: arg

Instance protocol:

 children

 children: aCollection

 errorString

 errorString: something

 errorToken

 errorToken: something

 lineNumber

 lineNumber: anInteger

(comment from inherited method)
set linenumber - ignored here

 childrenDo: aBlock

 printAllOn: aStream indent: indent

 printOn: aStream indent: indent

append a user printed representation of the receiver to aStream.
The format is suitable for a human - not meant to be read back.

 isErrorNode

 acceptVisitor: aVisitor

Double dispatch back to the visitor, passing my type encoded in
the selector (visitor pattern)