org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/TextBlock.java - objectteams/org.eclipse.objectteams - Gitiles

 /*******************************************************************************
  * Copyright (c) 2019 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * This is an implementation of an early-draft specification developed under the Java
  * Community Process (JCP) and is made available for testing and evaluation purposes
  * only. The code is not compatible with any specification of the JCP.
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.jdt.core.dom;

 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.jdt.core.compiler.InvalidInputException;
 import org.eclipse.jdt.internal.compiler.parser.Scanner;
 import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
 import org.eclipse.jdt.internal.compiler.parser.TerminalTokens;

 /**
  * TextBolck  AST node type.
  *
  * These are block of String literal nodes.
  *
  * @since 3.19 BETA_JAVA13
  * @noinstantiate This class is not intended to be instantiated by clients.
  * @noreference This class is not intended to be referenced by clients as it is a part of Java preview feature.
  */
 @SuppressWarnings("rawtypes")
 public class TextBlock extends Expression {

 	/**
 	 * The "escapedValue" structural property of this node type (type: {@link String}).
 	 * @since 3.0
 	 */
 	public static final SimplePropertyDescriptor ESCAPED_VALUE_PROPERTY =
 		new SimplePropertyDescriptor(TextBlock.class, "escapedValue", String.class, MANDATORY); //$NON-NLS-1$

 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 */
 	private static final List PROPERTY_DESCRIPTORS;

 	static {
 		List propertyList = new ArrayList(2);
 		createPropertyList(TextBlock.class, propertyList);
 		addProperty(ESCAPED_VALUE_PROPERTY, propertyList);
 		PROPERTY_DESCRIPTORS = reapPropertyList(propertyList);
 	}

 	/**
 	 * Returns a list of structural property descriptors for this node type.
 	 * Clients must not modify the result.
 	 *
 	 * @param apiLevel the API level; one of the
 	 * <code>AST.JLS*</code> constants

 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 * @since 3.0
 	 */
 	public static List propertyDescriptors(int apiLevel) {
 		return propertyDescriptors(apiLevel, false);
 	}

 	/**
 	 * Returns a list of structural property descriptors for this node type.
 	 * Clients must not modify the result.
 	 *
 	 * @param apiLevel the API level; one of the
 	 * <code>AST.JLS*</code> constants
 	 * @param previewEnabled the previewEnabled flag
 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 * @noreference This method is not intended to be referenced by clients.
 	 * @since 3.19 BETA_JAVA13
 	 */
 	public static List propertyDescriptors(int apiLevel, boolean previewEnabled) {
 		if (apiLevel == AST.JLS13_INTERNAL && previewEnabled) {
 			return PROPERTY_DESCRIPTORS;
 		}
 		return null;
 	}
 	/**
 	 * The literal string, including quotes and escapes; defaults to the
 	 * literal for the empty string.
 	 */
 	private String escapedValue = "\"\"";//$NON-NLS-1$

 	/**
 	 * Creates a new unparented TextBlock node owned by the given AST.
 	 * By default, the TextBlock denotes the empty string.
 	 * <p>
 	 * N.B. This constructor is package-private.
 	 * </p>
 	 *
 	 * @param ast the AST that is to own this node
 	 * @exception UnsupportedOperationException if this operation is used other than JLS13
 	 * @exception UnsupportedOperationException if this expression is used with previewEnabled flag as false
 	 */
 	TextBlock(AST ast) {
 		super(ast);
 		supportedOnlyIn13();
 		unsupportedWithoutPreviewError();
 	}

 	@Override
 	final List internalStructuralPropertiesForType(int apiLevel) {
 		return propertyDescriptors(apiLevel);
 	}

 	@Override
 	final List internalStructuralPropertiesForType(int apiLevel, boolean previewEnabled) {
 		return propertyDescriptors(apiLevel, previewEnabled);
 	}

 	@Override
 	final Object internalGetSetObjectProperty(SimplePropertyDescriptor property, boolean get, Object value) {
 		if (property == ESCAPED_VALUE_PROPERTY) {
 			if (get) {
 				return getEscapedValue();
 			} else {
 				setEscapedValue((String) value);
 				return null;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetObjectProperty(property, get, value);
 	}

 	@Override
 	final int getNodeType0() {
 		return TEXT_BLOCK;
 	}

 	@Override
 	ASTNode clone0(AST target) {
 		TextBlock result = new TextBlock(target);
 		result.setSourceRange(getStartPosition(), getLength());
 		result.setEscapedValue(getEscapedValue());
 		return result;
 	}

 	@Override
 	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
 		// dispatch to correct overloaded match method
 		return matcher.match(this, other);
 	}

 	@Override
 	void accept0(ASTVisitor visitor) {
 		visitor.visit(this);
 		visitor.endVisit(this);
 	}

 	/**
 	 * Returns the string value of this literal node to the given string
 	 * literal token. The token is the sequence of characters that would appear
 	 * in the source program, including enclosing double quotes and embedded
 	 * escapes.
 	 *
 	 * @return the string literal token, including enclosing double
 	 *    quotes and embedded escapes
 	 */
 	public String getEscapedValue() {
 		return this.escapedValue;
 	}

 	/**
 	 * Sets the string value of this literal node to the given string literal
 	 * token. The token is the sequence of characters that would appear in the
 	 * source program, including enclosing double quotes and embedded escapes.
 	 * For example,
 	 * <ul>
 	 * <li><code>""</code> <code>setLiteral("\"\"")</code></li>
 	 * <li><code>"hello world"</code> <code>setLiteral("\"hello world\"")</code></li>
 	 * <li><code>"boo\nhoo"</code> <code>setLiteral("\"boo\\nhoo\"")</code></li>
 	 * </ul>
 	 *
 	 * @param token the string literal token, including enclosing double
 	 *    quotes and embedded escapes
 	 * @exception IllegalArgumentException if the argument is incorrect
 	 */
 	public void setEscapedValue(String token) {
 		// update internalSetEscapedValue(String) if this is changed
 		if (token == null) {
 			throw new IllegalArgumentException("Token cannot be null"); //$NON-NLS-1$
 		}
 		Scanner scanner = this.ast.scanner;
 		char[] source = token.toCharArray();
 		scanner.setSource(source);
 		scanner.resetTo(0, source.length);
 		try {
 			int tokenType = scanner.getNextToken();
 			switch(tokenType) {
 				case TerminalTokens.TokenNameTextBlock:
 					break;
 				default:
 					throw new IllegalArgumentException("Invalid Text Block : >" + token + "<"); //$NON-NLS-1$//$NON-NLS-2$
 			}
 		} catch(InvalidInputException e) {
 			throw new IllegalArgumentException("Invalid Text Block : >" + token + "<");//$NON-NLS-1$//$NON-NLS-2$
 		}
 		preValueChange(ESCAPED_VALUE_PROPERTY);
 		this.escapedValue = token;
 		postValueChange(ESCAPED_VALUE_PROPERTY);
 	}

 	/* (omit javadoc for this method)
 	 * This method is a copy of setEscapedValue(String) that doesn't do any validation.
 	 */
 	void internalSetEscapedValue(String token) {
 		preValueChange(ESCAPED_VALUE_PROPERTY);
 		this.escapedValue = token;
 		postValueChange(ESCAPED_VALUE_PROPERTY);
 	}

 	/**
 	 * Returns the value of this literal node.
 	 * <p>
 	 * For example,
 	 * <pre>
 	 * TextBlock s;
 	 * s.setEscapedValue("\"\"\"  \n hello\\n world\"");
 	 * assert s.getLiteralValue().equals("hello\n world");
 	 * </pre>
 	 * <p>
 	 * Note that this is a convenience method that converts from the stored
 	 * TextBlock token returned by <code>getEscapedLiteral</code>.
 	 * </p>
 	 *
 	 * @return the string value without enclosing triple quotes
 	 * @exception IllegalArgumentException if the literal value cannot be converted
 	 */
 	public String getLiteralValue() {
 		String s = getEscapedValue();
 		int len = s.length();
 		if (len < 2 || s.indexOf("\"\"\"") != 0 || !s.substring(len-3, len).equals("\"\"\"") ) { //$NON-NLS-1$ //$NON-NLS-2$
 			throw new IllegalArgumentException();
 		}

 		boolean newLineFound = false;
 		for (int i = 3; i < s.length(); i++) {
 			char c = s.charAt(i);
 			while (ScannerHelper.isWhitespace(c)) {
 				switch (c) {
 					case 10 : /* \ u000a: LINE FEED               */
 					case 13 : /* \ u000d: CARRIAGE RETURN         */
 						newLineFound =  true;
 						break;
 					default:
 						break;
 				}
 			}
 		}
 		if (!newLineFound) {
 			throw new IllegalArgumentException();
 		}

 		Scanner scanner = this.ast.scanner;
 		char[] source = s.toCharArray();
 		scanner.setSource(source);
 		scanner.resetTo(0, source.length);
 		try {
 			int tokenType = scanner.getNextToken();
 			switch(tokenType) {
 				case TerminalTokens.TokenNameTextBlock:
 					return scanner.getCurrentStringLiteral();
 				default:
 					throw new IllegalArgumentException();
 			}
 		} catch(InvalidInputException e) {
 			throw new IllegalArgumentException();
 		}
 	}


 	@Override
 	int memSize() {
 		int size = BASE_NODE_SIZE + 1 * 4 + stringSize(this.escapedValue);
 		return size;
 	}

 	@Override
 	int treeSize() {
 		return memSize();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2019 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* This is an implementation of an early-draft specification developed under the Java
	* Community Process (JCP) and is made available for testing and evaluation purposes
	* only. The code is not compatible with any specification of the JCP.
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/

	package org.eclipse.jdt.core.dom;

	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.jdt.core.compiler.InvalidInputException;
	import org.eclipse.jdt.internal.compiler.parser.Scanner;
	import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
	import org.eclipse.jdt.internal.compiler.parser.TerminalTokens;

	/**
	* TextBolck AST node type.
	*
	* These are block of String literal nodes.
	*
	* @since 3.19 BETA_JAVA13
	* @noinstantiate This class is not intended to be instantiated by clients.
	* @noreference This class is not intended to be referenced by clients as it is a part of Java preview feature.
	*/
	@SuppressWarnings("rawtypes")
	public class TextBlock extends Expression {

	/**
	* The "escapedValue" structural property of this node type (type: {@link String}).
	* @since 3.0
	*/
	public static final SimplePropertyDescriptor ESCAPED_VALUE_PROPERTY =
	new SimplePropertyDescriptor(TextBlock.class, "escapedValue", String.class, MANDATORY); //$NON-NLS-1$

	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	*/
	private static final List PROPERTY_DESCRIPTORS;

	static {
	List propertyList = new ArrayList(2);
	createPropertyList(TextBlock.class, propertyList);
	addProperty(ESCAPED_VALUE_PROPERTY, propertyList);
	PROPERTY_DESCRIPTORS = reapPropertyList(propertyList);
	}

	/**
	* Returns a list of structural property descriptors for this node type.
	* Clients must not modify the result.
	*
	* @param apiLevel the API level; one of the
	* <code>AST.JLS*</code> constants

	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	* @since 3.0
	*/
	public static List propertyDescriptors(int apiLevel) {
	return propertyDescriptors(apiLevel, false);
	}

	/**
	* Returns a list of structural property descriptors for this node type.
	* Clients must not modify the result.
	*
	* @param apiLevel the API level; one of the
	* <code>AST.JLS*</code> constants
	* @param previewEnabled the previewEnabled flag
	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	* @noreference This method is not intended to be referenced by clients.
	* @since 3.19 BETA_JAVA13
	*/
	public static List propertyDescriptors(int apiLevel, boolean previewEnabled) {
	if (apiLevel == AST.JLS13_INTERNAL && previewEnabled) {
	return PROPERTY_DESCRIPTORS;
	}
	return null;
	}
	/**
	* The literal string, including quotes and escapes; defaults to the
	* literal for the empty string.
	*/
	private String escapedValue = "\"\"";//$NON-NLS-1$

	/**
	* Creates a new unparented TextBlock node owned by the given AST.
	* By default, the TextBlock denotes the empty string.
	* <p>
	* N.B. This constructor is package-private.
	* </p>
	*
	* @param ast the AST that is to own this node
	* @exception UnsupportedOperationException if this operation is used other than JLS13
	* @exception UnsupportedOperationException if this expression is used with previewEnabled flag as false
	*/
	TextBlock(AST ast) {
	super(ast);
	supportedOnlyIn13();
	unsupportedWithoutPreviewError();
	}

	@Override
	final List internalStructuralPropertiesForType(int apiLevel) {
	return propertyDescriptors(apiLevel);
	}

	@Override
	final List internalStructuralPropertiesForType(int apiLevel, boolean previewEnabled) {
	return propertyDescriptors(apiLevel, previewEnabled);
	}

	@Override
	final Object internalGetSetObjectProperty(SimplePropertyDescriptor property, boolean get, Object value) {
	if (property == ESCAPED_VALUE_PROPERTY) {
	if (get) {
	return getEscapedValue();
	} else {
	setEscapedValue((String) value);
	return null;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetObjectProperty(property, get, value);
	}

	@Override
	final int getNodeType0() {
	return TEXT_BLOCK;
	}

	@Override
	ASTNode clone0(AST target) {
	TextBlock result = new TextBlock(target);
	result.setSourceRange(getStartPosition(), getLength());
	result.setEscapedValue(getEscapedValue());
	return result;
	}

	@Override
	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
	// dispatch to correct overloaded match method
	return matcher.match(this, other);
	}

	@Override
	void accept0(ASTVisitor visitor) {
	visitor.visit(this);
	visitor.endVisit(this);
	}

	/**
	* Returns the string value of this literal node to the given string
	* literal token. The token is the sequence of characters that would appear
	* in the source program, including enclosing double quotes and embedded
	* escapes.
	*
	* @return the string literal token, including enclosing double
	* quotes and embedded escapes
	*/
	public String getEscapedValue() {
	return this.escapedValue;
	}

	/**
	* Sets the string value of this literal node to the given string literal
	* token. The token is the sequence of characters that would appear in the
	* source program, including enclosing double quotes and embedded escapes.
	* For example,
	* <ul>
	* <li><code>""</code> <code>setLiteral("\"\"")</code></li>
	* <li><code>"hello world"</code> <code>setLiteral("\"hello world\"")</code></li>
	* <li><code>"boo\nhoo"</code> <code>setLiteral("\"boo\\nhoo\"")</code></li>
	* </ul>
	*
	* @param token the string literal token, including enclosing double
	* quotes and embedded escapes
	* @exception IllegalArgumentException if the argument is incorrect
	*/
	public void setEscapedValue(String token) {
	// update internalSetEscapedValue(String) if this is changed
	if (token == null) {
	throw new IllegalArgumentException("Token cannot be null"); //$NON-NLS-1$
	}
	Scanner scanner = this.ast.scanner;
	char[] source = token.toCharArray();
	scanner.setSource(source);
	scanner.resetTo(0, source.length);
	try {
	int tokenType = scanner.getNextToken();
	switch(tokenType) {
	case TerminalTokens.TokenNameTextBlock:
	break;
	default:
	throw new IllegalArgumentException("Invalid Text Block : >" + token + "<"); //$NON-NLS-1$//$NON-NLS-2$
	}
	} catch(InvalidInputException e) {
	throw new IllegalArgumentException("Invalid Text Block : >" + token + "<");//$NON-NLS-1$//$NON-NLS-2$
	}
	preValueChange(ESCAPED_VALUE_PROPERTY);
	this.escapedValue = token;
	postValueChange(ESCAPED_VALUE_PROPERTY);
	}

	/* (omit javadoc for this method)
	* This method is a copy of setEscapedValue(String) that doesn't do any validation.
	*/
	void internalSetEscapedValue(String token) {
	preValueChange(ESCAPED_VALUE_PROPERTY);
	this.escapedValue = token;
	postValueChange(ESCAPED_VALUE_PROPERTY);
	}

	/**
	* Returns the value of this literal node.
	* <p>
	* For example,
	* <pre>
	* TextBlock s;
	* s.setEscapedValue("\"\"\" \n hello\\n world\"");
	* assert s.getLiteralValue().equals("hello\n world");
	* </pre>
	* <p>
	* Note that this is a convenience method that converts from the stored
	* TextBlock token returned by <code>getEscapedLiteral</code>.
	* </p>
	*
	* @return the string value without enclosing triple quotes
	* @exception IllegalArgumentException if the literal value cannot be converted
	*/
	public String getLiteralValue() {
	String s = getEscapedValue();
	int len = s.length();
	if (len < 2 \|\| s.indexOf("\"\"\"") != 0 \|\| !s.substring(len-3, len).equals("\"\"\"") ) { //$NON-NLS-1$ //$NON-NLS-2$
	throw new IllegalArgumentException();
	}

	boolean newLineFound = false;
	for (int i = 3; i < s.length(); i++) {
	char c = s.charAt(i);
	while (ScannerHelper.isWhitespace(c)) {
	switch (c) {
	case 10 : /* \ u000a: LINE FEED */
	case 13 : /* \ u000d: CARRIAGE RETURN */
	newLineFound = true;
	break;
	default:
	break;
	}
	}
	}
	if (!newLineFound) {
	throw new IllegalArgumentException();
	}

	Scanner scanner = this.ast.scanner;
	char[] source = s.toCharArray();
	scanner.setSource(source);
	scanner.resetTo(0, source.length);
	try {
	int tokenType = scanner.getNextToken();
	switch(tokenType) {
	case TerminalTokens.TokenNameTextBlock:
	return scanner.getCurrentStringLiteral();
	default:
	throw new IllegalArgumentException();
	}
	} catch(InvalidInputException e) {
	throw new IllegalArgumentException();
	}
	}


	@Override
	int memSize() {
	int size = BASE_NODE_SIZE + 1 * 4 + stringSize(this.escapedValue);
	return size;
	}

	@Override
	int treeSize() {
	return memSize();
	}
	}