Package software.amazon.smithy.model.node

Class StringNode

java.lang.Object

software.amazon.smithy.model.node.Node

software.amazon.smithy.model.node.StringNode

All Implemented Interfaces:

FromSourceLocation, ToNode

public final class StringNode
extends Node

Represents a string node.

Constructor Summary

Constructors

Constructor	Description
StringNode(java.lang.String value, SourceLocation sourceLocation)	Creates a new StringNode.

Method Summary

Modifier and Type	Method	Description
<R> R	accept(NodeVisitor<R> visitor)	Accepts a visitor with the node.
java.util.Optional<StringNode>	asStringNode()	Gets the node as an StringNode if it is an string.
static software.amazon.smithy.utils.Pair<StringNode,java.util.function.Consumer<java.lang.String>>	createLazyString(java.lang.String placeholder, SourceLocation sourceLocation)	Creates a StringNode that is lazily populated with a value provided by the given Supplier.
boolean	equals(java.lang.Object other)
java.lang.String	expectOneOf(java.lang.String... validValues)	Gets the string if it is one of the provided valid strings.
java.lang.String	expectOneOf(java.util.Collection<java.lang.String> validValues)	Gets the string if it is one of the provided valid strings.
ShapeId	expectShapeId()	Expects that the value of the string is a fully-qualified Shape ID.
ShapeId	expectShapeId(java.lang.String namespace)	Expects that the value of the string is a Shape ID.
StringNode	expectStringNode(java.lang.String errorMessage)	Casts the current node to a StringNode, throwing ExpectationNotMetException when the node is the wrong type.
NodeType	getType()	Gets the type of the node.
java.lang.String	getValue()	Gets the string value.
int	hashCode()
java.lang.String	toString()

Methods inherited from class software.amazon.smithy.model.node.Node

arrayNode, arrayNode, asArrayNode, asBooleanNode, asNullNode, asNumberNode, asObjectNode, assertEquals, diff, expectArrayNode, expectArrayNode, expectBooleanNode, expectBooleanNode, expectNullNode, expectNullNode, expectNumberNode, expectNumberNode, expectObjectNode, expectObjectNode, expectStringNode, from, from, from, fromNodes, fromNodes, fromStrings, fromStrings, getSourceLocation, isArrayNode, isBooleanNode, isNullNode, isNumberNode, isObjectNode, isStringNode, loadArrayOfString, nullNode, objectNode, objectNode, objectNodeBuilder, parse, parse, parse, parse, parseJsonWithComments, parseJsonWithComments, prettyPrintJson, prettyPrintJson, printJson, toNode, withDeepSortedKeys, withDeepSortedKeys

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StringNode

public StringNode(java.lang.String value,
                  SourceLocation sourceLocation)

Creates a new StringNode.

Parameters:

value - Immutable value to set.

sourceLocation - Source location of where the node was defined.

Method Detail

createLazyString

public static software.amazon.smithy.utils.Pair<StringNode,java.util.function.Consumer<java.lang.String>> createLazyString(java.lang.String placeholder,
                                                                                                                                 SourceLocation sourceLocation)

Creates a StringNode that is lazily populated with a value provided by the given Supplier.

This method is used in the SmithyModelLoader class to be able to resolve unquoted strings to the appropriate shape ID. Because this can only be done after an entire model is loaded, setting the resolved value inside of a node needs to be deferred.

Lazy string nodes are not thread safe and there's no validation to ensure that the supplier is invoked only once. Their usage should be rare and you should generally try to use an alternative approach.

Parameters:

placeholder - Placeholder string to use until the supplier is called.

sourceLocation - Location of where the value was originally defined.

Returns:

Returns a pair of the string node and the supplier to invoke with the value.

getType

public NodeType getType()

Description copied from class: Node

Gets the type of the node.

Specified by:

getType in class Node

Returns:

Returns the node type.

accept

public <R> R accept(NodeVisitor<R> visitor)

Description copied from class: Node

Accepts a visitor with the node.

Specified by:

accept in class Node

Type Parameters:

R - visitor return type.

Parameters:

visitor - Visitor to dispatch to.

Returns:

Returns the accepted result.

expectStringNode

public StringNode expectStringNode(java.lang.String errorMessage)

Description copied from class: Node

Casts the current node to a StringNode, throwing ExpectationNotMetException when the node is the wrong type.

Overrides:

expectStringNode in class Node

Parameters:

errorMessage - Error message to use if the node is of the wrong type.

Returns:

Returns a string node.

asStringNode

public java.util.Optional<StringNode> asStringNode()

Description copied from class: Node

Gets the node as an StringNode if it is an string.

Overrides:

asStringNode in class Node

Returns:

Returns the optional StringNode.

getValue

public java.lang.String getValue()

Gets the string value.

Returns:

Returns the string value.

expectOneOf

public java.lang.String expectOneOf(java.lang.String... validValues)

Gets the string if it is one of the provided valid strings.

Parameters:

validValues - A list of valid string values.

Returns:

The string value.

Throws:

ExpectationNotMetException - when the value is not one of the valid strings.

expectOneOf

public java.lang.String expectOneOf(java.util.Collection<java.lang.String> validValues)

Gets the string if it is one of the provided valid strings.

Parameters:

validValues - A list of valid string values.

Returns:

The string value.

Throws:

ExpectationNotMetException - if the value is not in the list.

expectShapeId

public ShapeId expectShapeId(java.lang.String namespace)

Expects that the value of the string is a Shape ID.

Parameters:

namespace - Namespace to use when resolving relative shape IDs.

Returns:

Returns the parsed Shape ID.

expectShapeId

public ShapeId expectShapeId()

Expects that the value of the string is a fully-qualified Shape ID.

Returns:

Returns the parsed Shape ID.

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object