Package graphql.language

Class AstPrinter

java.lang.Object

graphql.language.AstPrinter

Direct Known Subclasses:

PrettyAstPrinter

@PublicApi
public class AstPrinter
extends Object

This can take graphql language AST and print it out as a string

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static interface	AstPrinter.NodePrinter<T extends Node>	These print nodes into output writers

Field Summary

Fields

Modifier and Type	Field	Description
private final boolean	compactMode
private final Map<Class<? extends Node>,AstPrinter.NodePrinter<? extends Node>>	printers

Constructor Summary

Constructors

Constructor	Description
AstPrinter(boolean compactMode)

Method Summary

Modifier and Type	Method	Description
(package private) <T extends Node> AstPrinter.NodePrinter<T>	_findPrinter(Node node)
(package private) <T extends Node> AstPrinter.NodePrinter<T>	_findPrinter(Node node, Class startClass)
private AstPrinter.NodePrinter<Argument>	argument()
private <T extends Node> String	block(List<T> nodes)
private String	description(Node<?> node)
private AstPrinter.NodePrinter<Directive>	directive()
private AstPrinter.NodePrinter<DirectiveDefinition>	directiveDefinition()
private AstPrinter.NodePrinter<DirectiveLocation>	directiveLocation()
private String	directives(List<Directive> directives)
private AstPrinter.NodePrinter<Document>	document()
private AstPrinter.NodePrinter<EnumTypeDefinition>	enumTypeDefinition()
private AstPrinter.NodePrinter<EnumTypeExtensionDefinition>	enumTypeExtensionDefinition()
private AstPrinter.NodePrinter<EnumValue>	enumValue()
private AstPrinter.NodePrinter<EnumValueDefinition>	enumValueDefinition()
private AstPrinter.NodePrinter<Field>	field()
private AstPrinter.NodePrinter<FieldDefinition>	fieldDefinition()
private AstPrinter.NodePrinter<FragmentDefinition>	fragmentDefinition()
private AstPrinter.NodePrinter<FragmentSpread>	fragmentSpread()
private boolean	hasDescription(List<? extends Node> nodes)
private StringBuilder	indent(StringBuilder maybeString)
private AstPrinter.NodePrinter<InlineFragment>	inlineFragment()
private AstPrinter.NodePrinter<InputObjectTypeDefinition>	inputObjectTypeDefinition()
private AstPrinter.NodePrinter<InputObjectTypeExtensionDefinition>	inputObjectTypeExtensionDefinition()
private AstPrinter.NodePrinter<InputValueDefinition>	inputValueDefinition()
private AstPrinter.NodePrinter<InterfaceTypeDefinition>	interfaceTypeDefinition()
private AstPrinter.NodePrinter<InterfaceTypeDefinition>	interfaceTypeExtensionDefinition()
private boolean	isEmpty(String s)
private <T> boolean	isEmpty(List<T> list)
private String	join(String delim, String... args)
private <T extends Node> String	join(List<T> nodes, String delim)
private <T extends Node> String	join(List<T> nodes, String delim, String prefix, String suffix)
private <T extends Node> String	joinTight(List<T> nodes, String delim, String prefix, String suffix)
private String	node(Node node)
private String	node(Node node, Class startClass)
private <T> List<T>	nvl(List<T> list)
private AstPrinter.NodePrinter<ObjectField>	objectField()
private AstPrinter.NodePrinter<ObjectTypeDefinition>	objectTypeDefinition()
private AstPrinter.NodePrinter<ObjectTypeExtensionDefinition>	objectTypeExtensionDefinition()
private AstPrinter.NodePrinter<OperationDefinition>	operationDefinition()
private AstPrinter.NodePrinter<OperationTypeDefinition>	operationTypeDefinition()
static String	printAst(Node node)	This will pretty print the AST node in graphql language format
static void	printAst(Writer writer, Node node)	This will pretty print the AST node in graphql language format
static String	printAstCompact(Node node)	This will print the Ast node in graphql language format in a compact manner, with no new lines and descriptions stripped out of the text.
private static void	printImpl(StringBuilder writer, Node node, boolean compactMode)
(package private) void	replacePrinter(Class<? extends Node> nodeClass, AstPrinter.NodePrinter<? extends Node> nodePrinter)	Allow subclasses to replace a printer for a specific Node
private AstPrinter.NodePrinter<ScalarTypeDefinition>	scalarTypeDefinition()
private AstPrinter.NodePrinter<ScalarTypeExtensionDefinition>	scalarTypeExtensionDefinition()
private AstPrinter.NodePrinter<SchemaDefinition>	schemaDefinition()
private AstPrinter.NodePrinter<SchemaExtensionDefinition>	schemaExtensionDefinition()
private AstPrinter.NodePrinter<SelectionSet>	selectionSet()
private String	smooshed(String... args)
private String	spaced(String... args)
private AstPrinter.NodePrinter<Type>	type()
private String	type(Type type)
private AstPrinter.NodePrinter<UnionTypeDefinition>	unionTypeDefinition()
private AstPrinter.NodePrinter<UnionTypeExtensionDefinition>	unionTypeExtensionDefinition()
private AstPrinter.NodePrinter<Value>	value()
private String	value(Value value)
private AstPrinter.NodePrinter<VariableDefinition>	variableDefinition()
private AstPrinter.NodePrinter<VariableReference>	variableReference()
(package private) String	wrap(String start, Node maybeNode, String end)
(package private) String	wrap(String start, String maybeString, String end)

Methods inherited from class java.lang.Object

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

Field Details

printers

private final Map<Class<? extends Node>,AstPrinter.NodePrinter<? extends Node>> printers

compactMode

private final boolean compactMode

Constructor Details

AstPrinter

AstPrinter(boolean compactMode)

Method Details

argument

private AstPrinter.NodePrinter<Argument> argument()

document

private AstPrinter.NodePrinter<Document> document()

directive

private AstPrinter.NodePrinter<Directive> directive()

directiveDefinition

private AstPrinter.NodePrinter<DirectiveDefinition> directiveDefinition()

directiveLocation

private AstPrinter.NodePrinter<DirectiveLocation> directiveLocation()

enumTypeDefinition

private AstPrinter.NodePrinter<EnumTypeDefinition> enumTypeDefinition()

enumValue

private AstPrinter.NodePrinter<EnumValue> enumValue()

enumValueDefinition

private AstPrinter.NodePrinter<EnumValueDefinition> enumValueDefinition()

field

private AstPrinter.NodePrinter<Field> field()

fieldDefinition

private AstPrinter.NodePrinter<FieldDefinition> fieldDefinition()

hasDescription

private boolean hasDescription(List<? extends Node> nodes)

fragmentDefinition

private AstPrinter.NodePrinter<FragmentDefinition> fragmentDefinition()

fragmentSpread

private AstPrinter.NodePrinter<FragmentSpread> fragmentSpread()

inlineFragment

private AstPrinter.NodePrinter<InlineFragment> inlineFragment()

inputObjectTypeDefinition

private AstPrinter.NodePrinter<InputObjectTypeDefinition> inputObjectTypeDefinition()

inputValueDefinition

private AstPrinter.NodePrinter<InputValueDefinition> inputValueDefinition()

interfaceTypeDefinition

private AstPrinter.NodePrinter<InterfaceTypeDefinition> interfaceTypeDefinition()

objectField

private AstPrinter.NodePrinter<ObjectField> objectField()

operationDefinition

private AstPrinter.NodePrinter<OperationDefinition> operationDefinition()

operationTypeDefinition

private AstPrinter.NodePrinter<OperationTypeDefinition> operationTypeDefinition()

objectTypeDefinition

private AstPrinter.NodePrinter<ObjectTypeDefinition> objectTypeDefinition()

selectionSet

private AstPrinter.NodePrinter<SelectionSet> selectionSet()

scalarTypeDefinition

private AstPrinter.NodePrinter<ScalarTypeDefinition> scalarTypeDefinition()

schemaDefinition

private AstPrinter.NodePrinter<SchemaDefinition> schemaDefinition()

type

private AstPrinter.NodePrinter<Type> type()

type

private String type(Type type)

objectTypeExtensionDefinition

private AstPrinter.NodePrinter<ObjectTypeExtensionDefinition> objectTypeExtensionDefinition()

enumTypeExtensionDefinition

private AstPrinter.NodePrinter<EnumTypeExtensionDefinition> enumTypeExtensionDefinition()

interfaceTypeExtensionDefinition

private AstPrinter.NodePrinter<InterfaceTypeDefinition> interfaceTypeExtensionDefinition()

unionTypeExtensionDefinition

private AstPrinter.NodePrinter<UnionTypeExtensionDefinition> unionTypeExtensionDefinition()

scalarTypeExtensionDefinition

private AstPrinter.NodePrinter<ScalarTypeExtensionDefinition> scalarTypeExtensionDefinition()

inputObjectTypeExtensionDefinition

private AstPrinter.NodePrinter<InputObjectTypeExtensionDefinition> inputObjectTypeExtensionDefinition()

schemaExtensionDefinition

private AstPrinter.NodePrinter<SchemaExtensionDefinition> schemaExtensionDefinition()

unionTypeDefinition

private AstPrinter.NodePrinter<UnionTypeDefinition> unionTypeDefinition()

variableDefinition

private AstPrinter.NodePrinter<VariableDefinition> variableDefinition()

variableReference

private AstPrinter.NodePrinter<VariableReference> variableReference()

node

private String node(Node node)

node

private String node(Node node,
 Class startClass)

_findPrinter

<T extends Node> AstPrinter.NodePrinter<T> _findPrinter(Node node)

_findPrinter

<T extends Node> AstPrinter.NodePrinter<T> _findPrinter(Node node,
 Class startClass)

isEmpty

private <T> boolean isEmpty(List<T> list)

isEmpty

private boolean isEmpty(String s)

nvl

private <T> List<T> nvl(List<T> list)

value

private AstPrinter.NodePrinter<Value> value()

value

private String value(Value value)

description

private String description(Node<?> node)

directives

private String directives(List<Directive> directives)

join

private <T extends Node> String join(List<T> nodes,
 String delim)

joinTight

private <T extends Node> String joinTight(List<T> nodes,
 String delim,
 String prefix,
 String suffix)

join

private <T extends Node> String join(List<T> nodes,
 String delim,
 String prefix,
 String suffix)

spaced

private String spaced(String... args)

smooshed

private String smooshed(String... args)

join

private String join(String delim,
 String... args)

wrap

String wrap(String start,
 String maybeString,
 String end)

block

private <T extends Node> String block(List<T> nodes)

indent

private StringBuilder indent(StringBuilder maybeString)

wrap

String wrap(String start,
 Node maybeNode,
 String end)

printAst

public static String printAst(Node node)

This will pretty print the AST node in graphql language format

Parameters:

node - the AST node to print

Returns:

the printed node in graphql language format

printAst

public static void printAst(Writer writer,
 Node node)

This will pretty print the AST node in graphql language format

Parameters:

writer - the place to put the output

node - the AST node to print

printAstCompact

public static String printAstCompact(Node node)

This will print the Ast node in graphql language format in a compact manner, with no new lines and descriptions stripped out of the text.

Parameters:

node - the AST node to print

Returns:

the printed node in a compact graphql language format

printImpl

private static void printImpl(StringBuilder writer,
 Node node,
 boolean compactMode)

replacePrinter

void replacePrinter(Class<? extends Node> nodeClass,
 AstPrinter.NodePrinter<? extends Node> nodePrinter)

Allow subclasses to replace a printer for a specific Node

Parameters:

nodeClass - the class of the Node

nodePrinter - the custom AstPrinter.NodePrinter