This superclass of most compiler/decompiler classes declares common class variables, default messages, and the code emitters for jumps. Some of the class variables are initialized here; the rest are initialized in class VariableNode.

	comment
	comment comment:

	converting
	asReturnNode

	encoding
	encodeSelector:

	printing
	nodePrintOn:indent: printCommentOn:indent: printOn: printOn:indent: printOn:indent:precedence:

	private
	nextWordFrom:setCharacter: printSingleComment:on:indent:

	testing
	assignmentCheck:at: canBeSpecialArgument canCascade isArg isComplex isConstantNumber isLiteral isMessage:receiver:arguments: isReturnSelf isReturningIf isSelfPseudoVariable isSpecialConstant isTemp isUndefTemp isUnusedTemp isVariableReference nowHasDef nowHasRef toDoIncrement:

	tiles
	addCommentToMorph: asMorphicSyntaxIn: currentValueIn: explanation

	code generation	top
	emitBranchOn:dist:pop:on:
	emitForEffect:on:
	emitForReturn:on:
	emitJump:on:
	emitLong:code:on: Force a two-byte jump.
	emitShortOrLong:code:on:
	pc Used by encoder source mapping.
	sizeBranchOn:dist:
	sizeForEffect:
	sizeForReturn:
	sizeJump:
	sizeShortOrLong:

	comment	top
	comment
	comment:

	converting	top
	asReturnNode

	encoding	top
	encodeSelector:

	printing	top
	nodePrintOn:indent: Show just the sub nodes and the code.
	printCommentOn:indent:
	printOn: Refer to the comment in Object|printOn:.
	printOn:indent: If control gets here, avoid recursion loop.
	printOn:indent:precedence:

	private	top
	nextWordFrom:setCharacter:
	printSingleComment:on:indent: Print the comment string, assuming it has been indented indent tabs. Break the string at word breaks, given the widths in the default font, at 450 points.

	testing	top
	assignmentCheck:at: For messageNodes masquerading as variables for the debugger. For now we let this through - ie we allow stores ev into args. Should check against numArgs, though.
	canBeSpecialArgument Can I be an argument of (e.g.) ifTrue:?
	canCascade
	isArg
	isComplex Used for pretty printing to determine whether to start a new line
	isConstantNumber Overridden in LiteralNode
	isLiteral Answer whether the receiver has a literal text form recognized by the compiler.
	isMessage:receiver:arguments: See comment in MessageNode.
	isReturnSelf
	isReturningIf
	isSelfPseudoVariable Overridden in VariableNode.
	isSpecialConstant
	isTemp
	isUndefTemp
	isUnusedTemp
	isVariableReference
	nowHasDef Ignored in all but VariableNode
	nowHasRef Ignored in all but VariableNode
	toDoIncrement: Only meant for Messages or Assignments - else return nil

	tiles	top
	addCommentToMorph:
	asMorphicSyntaxIn: Default for missing implementations
	currentValueIn:
	explanation

	class initialization	top
	initialize ParseNode initialize. VariableNode initialize