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package graphql.language;

import graphql.Internal;

import graphql.PublicApi;

import graphql.util.TraversalControl;

import graphql.util.TraverserContext;

import java.util.ArrayList;

import java.util.LinkedHashMap;

import java.util.List;

import java.util.Map;

import java.util.function.Consumer;

import static graphql.Assert.assertNotNull;

import static graphql.language.NodeChildrenContainer.newNodeChildrenContainer;

import static graphql.language.NodeUtil.argumentsByName;

import static java.util.Collections.emptyMap;

@PublicApi

public class Directive extends AbstractNode<Directive> implements NamedNode<Directive> {

private final String name;

private final List<Argument> arguments = new ArrayList<>();

public static final String CHILD_ARGUMENTS = "arguments";

@Internal

protected Directive(String name, List<Argument> arguments, SourceLocation sourceLocation, List<Comment> comments, IgnoredChars ignoredChars, Map<String, String> additionalData) {

super(sourceLocation, comments, ignoredChars, additionalData);

this.name = name;

this.arguments.addAll(arguments);

}

/**

* alternative to using a Builder for convenience

*

* @param name of the directive

* @param arguments of the directive

*/

public Directive(String name, List<Argument> arguments) {

this(name, arguments, null, new ArrayList<>(), IgnoredChars.EMPTY, emptyMap());

}

/**

* alternative to using a Builder for convenience

*

* @param name of the directive

*/

public Directive(String name) {

this(name, new ArrayList<>(), null, new ArrayList<>(), IgnoredChars.EMPTY, emptyMap());

}

public List<Argument> getArguments() {

return new ArrayList<>(arguments);

}

public Map<String, Argument> getArgumentsByName() {

// the spec says that args MUST be unique within context

return argumentsByName(arguments);

}

public Argument getArgument(String argumentName) {

return getArgumentsByName().get(argumentName);

}

@Override

public String getName() {

return name;

}

@Override

public List<Node> getChildren() {

return new ArrayList<>(arguments);

}

@Override

public NodeChildrenContainer getNamedChildren() {

return newNodeChildrenContainer()

.children(CHILD_ARGUMENTS, arguments)

.build();

}

@Override

public Directive withNewChildren(NodeChildrenContainer newChildren) {

return transform(builder -> builder

.arguments(newChildren.getChildren(CHILD_ARGUMENTS))

);

}

@Override

public boolean isEqualTo(Node o) {

if (this == o) {

return true;

}

if (o == null || getClass() != o.getClass()) {

return false;

}

Directive that = (Directive) o;

return NodeUtil.isEqualTo(this.name, that.name);

}

@Override

public Directive deepCopy() {

return new Directive(name, deepCopy(arguments), getSourceLocation(), getComments(), getIgnoredChars(), getAdditionalData());

}

@Override

public String toString() {

return "Directive{" +

"name='" + name + '\'' +

", arguments=" + arguments +

'}';

}

@Override

public TraversalControl accept(TraverserContext<Node> context, NodeVisitor visitor) {

return visitor.visitDirective(this, context);

}

public static Builder newDirective() {

return new Builder();

}

public Directive transform(Consumer<Builder> builderConsumer) {

Builder builder = new Builder(this);

builderConsumer.accept(builder);

return builder.build();

}

public static final class Builder implements NodeBuilder {

private SourceLocation sourceLocation;

private List<Comment> comments = new ArrayList<>();

private String name;

private List<Argument> arguments = new ArrayList<>();

private IgnoredChars ignoredChars = IgnoredChars.EMPTY;

private Map<String, String> additionalData = new LinkedHashMap<>();

private Builder() {

}

private Builder(Directive existing) {

this.sourceLocation = existing.getSourceLocation();

this.comments = existing.getComments();

this.name = existing.getName();

this.arguments = existing.getArguments();

this.ignoredChars = existing.getIgnoredChars();

this.additionalData = new LinkedHashMap<>(existing.getAdditionalData());

}

public Builder sourceLocation(SourceLocation sourceLocation) {

this.sourceLocation = sourceLocation;

return this;

}

public Builder comments(List<Comment> comments) {

this.comments = comments;

return this;

}

public Builder name(String name) {

this.name = name;

return this;

}

public Builder arguments(List<Argument> arguments) {

this.arguments = arguments;

return this;

}

public Builder ignoredChars(IgnoredChars ignoredChars) {

this.ignoredChars = ignoredChars;

return this;

}

public Builder additionalData(Map<String, String> additionalData) {

this.additionalData = assertNotNull(additionalData);

return this;

}

public Builder additionalData(String key, String value) {

this.additionalData.put(key, value);

return this;

}

public Directive build() {

return new Directive(name, arguments, sourceLocation, comments, ignoredChars, additionalData);

}

}

}