Class: ParseErrorNode

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

Inheritance:

   Object
   |
   +--ParseNode
      |
      +--ParseErrorNode

Package:

stx:libcomp

Category:

System-Compiler-Support

Version:

rev: 1.8 date: 2017/05/22 16:38:01

user: mawalch

file: ParseErrorNode.st directory: libcomp

module: stx stc-classLibrary: libcomp

Author:

Jan Vrany <jan.vrany@fit.cvut.cz>

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:]

Related information:

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

 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)