Class: ParseNodeVisitor

• Inheritance
• Description
• Instance protocol
  • pluggable setup
  • visiting
  • visiting - javaScript

Inheritance:

   Object
   |
   +--ParseNodeVisitor
      |
      +--JavaScriptParseNodeVisitor
      |
      +--PluggableParseNodeVisitor

Package:

stx:libcomp

Category:

System-Compiler-Support

Version:

rev: 1.12 date: 2023/12/12 21:52:48

user: cg

file: ParseNodeVisitor.st directory: libcomp

module: stx stc-classLibrary: libcomp

Description:

a whitebox expandable abstract parsenode visitor.
Subclasses should redefine those acceptXXX methods, in which they are interested.

Instance protocol:

 actionForNodeClass: aNodeClass put: aBlock

setup so that for nodes of type aNodeClass, aBlock is invoked.
If the block returns true, subnodes (eg. right side of assignments, etc.)
will be enumerated as well.
Otherwise, no subnodes are visited.

 visit: anObject

 visitAssignmentNode: anObject

 visitBinaryNode: anObject

 visitBlockNode: anObject

 visitCascadeNode: anObject

 visitConstantNode: anObject

 visitECompletionConstantNode: anObject

dispatched back from the visited eCompletionConstantNode-object (visitor pattern)

 visitMessageNode: anObject

 visitObject: anObject

dispatched back from the visited objects (visitor pattern)

 visitParseErrorNode: anObject

 visitPrimitiveNode: anObject

 visitReturnNode: anObject

 visitSelfNode: anObject

to be redefined in subclasses

 visitStatementNode: anObject

 visitSuperNode: anObject

to be redefined in subclasses

 visitUnaryNode: anObject

 visitVariableNode: anObject

to be redefined in subclasses

 doesNotUnderstand: aMessage

catch to prevent stupid error reports from Explainer in end-user app (expecco)