org.teatrove.tea.parsetree
Class TreeMutator

java.lang.Object
  org.teatrove.tea.parsetree.TreeMutator

All Implemented Interfaces:

NodeVisitor

public abstract class TreeMutator
extends Object
implements NodeVisitor

TreeMutator is similar to TreeWalker in that it traverses a parse tree in canonocal order, and only a few visit methods should be overridden. The key difference is that visit methods must return a node of the same type as the one passed in. By returning a node which isn't the same as the one passed in, a node can be replaced.

Author:

Brian S O'Neill

Constructor Summary

TreeMutator()

Method Summary

Object	visit(AndExpression node)
Object	visit(ArithmeticExpression node)
Object	visit(ArrayLookup node)
Object	visit(AssignmentStatement node)
Object	visit(Block node)
Object	visit(BooleanLiteral node)
Object	visit(BreakStatement node)
Object	visit(CompareExpression node)
Object	visit(ConcatenateExpression node)
Object	visit(ContinueStatement node)
Object	visit(ExceptionGuardStatement node)
Object	visit(Expression node)
Object	visit(ExpressionList node)
Object	visit(ExpressionStatement node)
Object	visit(ForeachStatement node)
Object	visit(FunctionCallExpression node)
Object	visit(IfStatement node)
Object	visit(ImportDirective node)
Object	visit(Lookup node)
Object	visit(Name node)
Object	visit(NegateExpression node)
Object	visit(NewArrayExpression node)
Object	visit(NoOpExpression node)
Object	visit(NotExpression node)
Object	visit(NullLiteral node)
Object	visit(NumberLiteral node)
Object	visit(OrExpression node)
Object	visit(ParenExpression node)
Object	visit(RelationalExpression node)
Object	visit(ReturnStatement node)
Object	visit(SpreadExpression node)
Object	visit(Statement node)
Object	visit(StatementList node)
Object	visit(StringLiteral node)
Object	visit(SubstitutionStatement node)
Object	visit(Template node)
Object	visit(TemplateCallExpression node)
Object	visit(TernaryExpression node)
Object	visit(TypeExpression node)
Object	visit(TypeName node)
Object	visit(Variable node)
Object	visit(VariableRef node)
protected Block	visitBlock(Block block) Visit a Block to ensure that new Statement is a Block.
protected Expression	visitExpression(Expression expr) All expressions pass through this method to ensure the expression's type is preserved.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TreeMutator

public TreeMutator()

Method Detail

visit

public Object visit(Template node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(Name node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(TypeName node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(Variable node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ExpressionList node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(Statement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ImportDirective node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(StatementList node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(Block node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(AssignmentStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(BreakStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ContinueStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ForeachStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(IfStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(SubstitutionStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ExpressionStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ReturnStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ExceptionGuardStatement node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(Expression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ParenExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(NewArrayExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(FunctionCallExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(TemplateCallExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(VariableRef node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(Lookup node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ArrayLookup node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(NegateExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(NotExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ConcatenateExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(ArithmeticExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(RelationalExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(AndExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(OrExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(TernaryExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(CompareExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(NoOpExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(SpreadExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(TypeExpression node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(NullLiteral node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(BooleanLiteral node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(StringLiteral node)

Specified by:

visit in interface NodeVisitor

visit

public Object visit(NumberLiteral node)

Specified by:

visit in interface NodeVisitor

visitExpression

protected Expression visitExpression(Expression expr)

All expressions pass through this method to ensure the expression's type is preserved.

visitBlock

protected Block visitBlock(Block block)

Visit a Block to ensure that new Statement is a Block.