com.google.template.soy.exprtree

Class AbstractExprNodeVisitor<R>

java.lang.Object

com.google.template.soy.basetree.AbstractNodeVisitor<ExprNode,R>

com.google.template.soy.exprtree.AbstractExprNodeVisitor<R>

Type Parameters:

R - The return type of this visitor.

All Implemented Interfaces:

NodeVisitor<ExprNode,R>

public abstract class AbstractExprNodeVisitor<R>
extends AbstractNodeVisitor<ExprNode,R>

Abstract base class for all ExprNode visitors. A visitor is basically a function implemented for some or all ExprNodes, where the implementation can be different for each specific node class.

Same as AbstractReturningExprNodeVisitor except that in this class, internal visit() calls do not return a value.

Important: Do not use outside of Soy code (treat as superpackage-private).

To create a visitor:

1. Subclass this class.
2. Implement visit*Node() methods for some specific node types.
3. Implement fallback methods for node types not specifically handled. The most general fallback method is visitExprNode(), which is usually needed. Other fallback methods include visitPrimitiveNode() and visitOperatorNode().
4. Maybe implement a constructor, taking appropriate parameters for your visitor call.
5. Maybe implement exec() if this visitor needs to return a non-null final result and/or if this visitor has state that needs to be setup/reset before each unrelated use of visit().

See Also:

AbstractReturningExprNodeVisitor

Constructor Summary

Constructors

Constructor and Description
AbstractExprNodeVisitor()

Method Summary

Modifier and Type	Method and Description
protected void	visit(ExprNode node) Visits the given node to execute the function defined by this visitor.
protected void	visitAndOpNode(OperatorNodes.AndOpNode node)
protected void	visitBooleanNode(BooleanNode node)
protected void	visitChildren(ExprNode.ParentExprNode node) Helper to visit all the children of a node, in order.
protected void	visitChildrenAllowingConcurrentModification(ExprNode.ParentExprNode node) Helper to visit all the children of a node, in order.
protected void	visitConditionalOpNode(OperatorNodes.ConditionalOpNode node)
protected void	visitDataAccessNode(DataAccessNode node)
protected void	visitDivideByOpNode(OperatorNodes.DivideByOpNode node)
protected void	visitEqualOpNode(OperatorNodes.EqualOpNode node)
protected void	visitExprNode(ExprNode node)
protected void	visitExprRootNode(ExprRootNode<?> node)
protected void	visitFieldAccessNode(FieldAccessNode node)
protected void	visitFloatNode(FloatNode node)
protected void	visitFunctionNode(FunctionNode node)
protected void	visitGlobalNode(GlobalNode node)
protected void	visitGreaterThanOpNode(OperatorNodes.GreaterThanOpNode node)
protected void	visitGreaterThanOrEqualOpNode(OperatorNodes.GreaterThanOrEqualOpNode node)
protected void	visitIntegerNode(IntegerNode node)
protected void	visitItemAccessNode(ItemAccessNode node)
protected void	visitLessThanOpNode(OperatorNodes.LessThanOpNode node)
protected void	visitLessThanOrEqualOpNode(OperatorNodes.LessThanOrEqualOpNode node)
protected void	visitListLiteralNode(ListLiteralNode node)
protected void	visitMapLiteralNode(MapLiteralNode node)
protected void	visitMinusOpNode(OperatorNodes.MinusOpNode node)
protected void	visitModOpNode(OperatorNodes.ModOpNode node)
protected void	visitNegativeOpNode(OperatorNodes.NegativeOpNode node)
protected void	visitNotEqualOpNode(OperatorNodes.NotEqualOpNode node)
protected void	visitNotOpNode(OperatorNodes.NotOpNode node)
protected void	visitNullCoalescingOpNode(OperatorNodes.NullCoalescingOpNode node)
protected void	visitNullNode(NullNode node)
protected void	visitOperatorNode(ExprNode.OperatorNode node)
protected void	visitOrOpNode(OperatorNodes.OrOpNode node)
protected void	visitPlusOpNode(OperatorNodes.PlusOpNode node)
protected void	visitPrimitiveNode(ExprNode.PrimitiveNode node)
protected void	visitStringNode(StringNode node)
protected void	visitTimesOpNode(OperatorNodes.TimesOpNode node)
protected void	visitVarRefNode(VarRefNode node)

Methods inherited from class com.google.template.soy.basetree.AbstractNodeVisitor

exec, visitChildren, visitChildrenAllowingConcurrentModification

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractExprNodeVisitor

public AbstractExprNodeVisitor()

Method Detail

visit

protected void visit(ExprNode node)

Description copied from class: AbstractNodeVisitor

Visits the given node to execute the function defined by this visitor.

Specified by:

visit in class AbstractNodeVisitor<ExprNode,R>

Parameters:

node - The node to visit.

visitChildren

protected void visitChildren(ExprNode.ParentExprNode node)

Helper to visit all the children of a node, in order.

Parameters:

node - The parent node whose children to visit.

See Also:

visitChildrenAllowingConcurrentModification(com.google.template.soy.exprtree.ExprNode.ParentExprNode)

visitChildrenAllowingConcurrentModification

protected void visitChildrenAllowingConcurrentModification(ExprNode.ParentExprNode node)

Helper to visit all the children of a node, in order. This method differs from visitChildren in that we are iterating through a copy of the children. Thus, concurrent modification of the list of children is allowed.

Parameters:

node - The parent node whose children to visit.

See Also:

visitChildren(com.google.template.soy.exprtree.ExprNode.ParentExprNode)

visitExprRootNode

protected void visitExprRootNode(ExprRootNode<?> node)

visitNullNode

protected void visitNullNode(NullNode node)

visitBooleanNode

protected void visitBooleanNode(BooleanNode node)

visitIntegerNode

protected void visitIntegerNode(IntegerNode node)

visitFloatNode

protected void visitFloatNode(FloatNode node)

visitStringNode

protected void visitStringNode(StringNode node)

visitPrimitiveNode

protected void visitPrimitiveNode(ExprNode.PrimitiveNode node)

visitListLiteralNode

protected void visitListLiteralNode(ListLiteralNode node)

visitMapLiteralNode

protected void visitMapLiteralNode(MapLiteralNode node)

visitVarRefNode

protected void visitVarRefNode(VarRefNode node)

visitDataAccessNode

protected void visitDataAccessNode(DataAccessNode node)

visitFieldAccessNode

protected void visitFieldAccessNode(FieldAccessNode node)

visitItemAccessNode

protected void visitItemAccessNode(ItemAccessNode node)

visitGlobalNode

protected void visitGlobalNode(GlobalNode node)

visitNegativeOpNode

protected void visitNegativeOpNode(OperatorNodes.NegativeOpNode node)

visitNotOpNode

protected void visitNotOpNode(OperatorNodes.NotOpNode node)

visitTimesOpNode

protected void visitTimesOpNode(OperatorNodes.TimesOpNode node)

visitDivideByOpNode

protected void visitDivideByOpNode(OperatorNodes.DivideByOpNode node)

visitModOpNode

protected void visitModOpNode(OperatorNodes.ModOpNode node)

visitPlusOpNode

protected void visitPlusOpNode(OperatorNodes.PlusOpNode node)

visitMinusOpNode

protected void visitMinusOpNode(OperatorNodes.MinusOpNode node)

visitLessThanOpNode

protected void visitLessThanOpNode(OperatorNodes.LessThanOpNode node)

visitGreaterThanOpNode

protected void visitGreaterThanOpNode(OperatorNodes.GreaterThanOpNode node)

visitLessThanOrEqualOpNode

protected void visitLessThanOrEqualOpNode(OperatorNodes.LessThanOrEqualOpNode node)

visitGreaterThanOrEqualOpNode

protected void visitGreaterThanOrEqualOpNode(OperatorNodes.GreaterThanOrEqualOpNode node)

visitEqualOpNode

protected void visitEqualOpNode(OperatorNodes.EqualOpNode node)

visitNotEqualOpNode

protected void visitNotEqualOpNode(OperatorNodes.NotEqualOpNode node)

visitAndOpNode

protected void visitAndOpNode(OperatorNodes.AndOpNode node)

visitOrOpNode

protected void visitOrOpNode(OperatorNodes.OrOpNode node)

visitNullCoalescingOpNode

protected void visitNullCoalescingOpNode(OperatorNodes.NullCoalescingOpNode node)

visitConditionalOpNode

protected void visitConditionalOpNode(OperatorNodes.ConditionalOpNode node)

visitOperatorNode

protected void visitOperatorNode(ExprNode.OperatorNode node)

visitFunctionNode

protected void visitFunctionNode(FunctionNode node)

visitExprNode

protected void visitExprNode(ExprNode node)

Parameters:

node - The node being visited.