AbstractExprNodeVisitor (Closure Templates)

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>

Direct Known Subclasses:

ResolveFunctionsVisitor
```
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()

Constructors
Constructor and Description
`AbstractExprNodeVisitor()`

Method Summary

Methods
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 final 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.

Class AbstractExprNodeVisitor<R>

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

AbstractExprNodeVisitor

Method Detail

visit

visitChildren

visitChildrenAllowingConcurrentModification

visitExprRootNode

visitNullNode

visitBooleanNode

visitIntegerNode

visitFloatNode

visitStringNode

visitPrimitiveNode

visitListLiteralNode

visitMapLiteralNode

visitVarRefNode

visitDataAccessNode

visitFieldAccessNode

visitItemAccessNode

visitGlobalNode

visitNegativeOpNode

visitNotOpNode

visitTimesOpNode

visitDivideByOpNode

visitModOpNode

visitPlusOpNode

visitMinusOpNode

visitLessThanOpNode

visitGreaterThanOpNode

visitLessThanOrEqualOpNode

visitGreaterThanOrEqualOpNode

visitEqualOpNode

visitNotEqualOpNode

visitAndOpNode

visitOrOpNode

visitNullCoalescingOpNode

visitConditionalOpNode

visitOperatorNode

visitFunctionNode

visitExprNode