+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2008 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-
-package net.sourceforge.phpdt.core.dom;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import net.sourceforge.phpdt.core.compiler.InvalidInputException;
-import net.sourceforge.phpdt.internal.compiler.parser.Scanner;
-import net.sourceforge.phpdt.internal.compiler.parser.ScannerHelper;
-import net.sourceforge.phpdt.internal.compiler.parser.TerminalTokens;
-
-/**
- * Character literal nodes.
- *
- * @since 2.0
- * @noinstantiate This class is not intended to be instantiated by clients.
- */
-public class CharacterLiteral extends Expression {
-
- /**
- * The "escapedValue" structural property of this node type.
- * @since 3.0
- */
- public static final SimplePropertyDescriptor ESCAPED_VALUE_PROPERTY =
- new SimplePropertyDescriptor(CharacterLiteral.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 properyList = new ArrayList(2);
- createPropertyList(CharacterLiteral.class, properyList);
- addProperty(ESCAPED_VALUE_PROPERTY, properyList);
- PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
- }
-
- /**
- * 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 PROPERTY_DESCRIPTORS;
- }
-
- /**
- * The literal string, including quotes and escapes; defaults to the
- * literal for the character 'X'.
- */
- private String escapedValue = "\'X\'";//$NON-NLS-1$
-
- /**
- * Creates a new unparented character literal node owned by the given AST.
- * By default, the character literal denotes an unspecified character.
- * <p>
- * N.B. This constructor is package-private.
- * </p>
- *
- * @param ast the AST that is to own this node
- */
- CharacterLiteral(AST ast) {
- super(ast);
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- final List internalStructuralPropertiesForType(int apiLevel) {
- return propertyDescriptors(apiLevel);
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- 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);
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- final int getNodeType0() {
- return CHARACTER_LITERAL;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- ASTNode clone0(AST target) {
- CharacterLiteral result = new CharacterLiteral(target);
- result.setSourceRange(this.getStartPosition(), this.getLength());
- result.setEscapedValue(getEscapedValue());
- return result;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
- // dispatch to correct overloaded match method
- return matcher.match(this, other);
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- void accept0(ASTVisitor visitor) {
- visitor.visit(this);
- visitor.endVisit(this);
- }
-
- /**
- * Returns the string value of this literal node. The value is the sequence
- * of characters that would appear in the source program, including
- * enclosing single quotes and embedded escapes.
- *
- * @return the escaped string value, including enclosing single quotes
- * and embedded escapes
- */
- public String getEscapedValue() {
- return this.escapedValue;
- }
-
- /**
- * Sets the string value of this literal node. The value is the sequence
- * of characters that would appear in the source program, including
- * enclosing single quotes and embedded escapes. For example,
- * <ul>
- * <li><code>'a'</code> <code>setEscapedValue("\'a\'")</code></li>
- * <li><code>'\n'</code> <code>setEscapedValue("\'\\n\'")</code></li>
- * </ul>
- *
- * @param value the string value, including enclosing single quotes
- * and embedded escapes
- * @exception IllegalArgumentException if the argument is incorrect
- */
- public void setEscapedValue(String value) {
- // check setInternalEscapedValue(String) if this method is changed
- if (value == null) {
- throw new IllegalArgumentException();
- }
- Scanner scanner = this.ast.scanner;
- char[] source = value.toCharArray();
- scanner.setSource(source);
- scanner.resetTo(0, source.length);
- try {
- int tokenType = scanner.getNextToken();
- switch(tokenType) {
- case TerminalTokens.TokenNameCharacterLiteral:
- break;
- default:
- throw new IllegalArgumentException();
- }
- } catch(InvalidInputException e) {
- throw new IllegalArgumentException();
- }
- preValueChange(ESCAPED_VALUE_PROPERTY);
- this.escapedValue = value;
- 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 value) {
- preValueChange(ESCAPED_VALUE_PROPERTY);
- this.escapedValue = value;
- postValueChange(ESCAPED_VALUE_PROPERTY);
- }
-
- /**
- * Returns the value of this literal node.
- * <p>
- * For example,
- * <pre>
- * CharacterLiteral s;
- * s.setEscapedValue("\'x\'");
- * assert s.charValue() == 'x';
- * </pre>
- * </p>
- *
- * @return the character value without enclosing quotes and embedded
- * escapes
- * @exception IllegalArgumentException if the literal value cannot be converted
- */
- public char charValue() {
- Scanner scanner = this.ast.scanner;
- char[] source = escapedValue.toCharArray();
- scanner.setSource(source);
- scanner.resetTo(0, source.length);
- int firstChar = scanner.getNextChar();
- int secondChar = scanner.getNextChar();
-
- if (firstChar == -1 || firstChar != '\'') {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- char value = (char) secondChar;
- int nextChar = scanner.getNextChar();
- if (secondChar == '\\') {
- if (nextChar == -1) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- switch(nextChar) {
- case 'b' :
- value = '\b';
- break;
- case 't' :
- value = '\t';
- break;
- case 'n' :
- value = '\n';
- break;
- case 'f' :
- value = '\f';
- break;
- case 'r' :
- value = '\r';
- break;
- case '\"':
- value = '\"';
- break;
- case '\'':
- value = '\'';
- break;
- case '\\':
- value = '\\';
- break;
- default : //octal (well-formed: ended by a ' )
- try {
- if (ScannerHelper.isDigit((char) nextChar)) {
- int number = ScannerHelper.getNumericValue((char) nextChar);
- nextChar = scanner.getNextChar();
- if (nextChar == -1) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- if (nextChar != '\'') {
- if (!ScannerHelper.isDigit((char) nextChar)) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- number = (number * 8) + ScannerHelper.getNumericValue((char) nextChar);
- nextChar = scanner.getNextChar();
- if (nextChar == -1) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- if (nextChar != '\'') {
- if (!ScannerHelper.isDigit((char) nextChar)) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- number = (number * 8) + ScannerHelper.getNumericValue((char) nextChar);
- }
- }
- return (char) number;
- } else {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- } catch (InvalidInputException e) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- }
- nextChar = scanner.getNextChar();
- if (nextChar == -1) {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- }
- if (nextChar == -1 || nextChar != '\'') {
- throw new IllegalArgumentException("illegal character literal");//$NON-NLS-1$
- }
- return value;
- }
- /**
- * Sets the value of this character literal node to the given character.
- * <p>
- * For example,
- * <pre>
- * CharacterLiteral s;
- * s.setCharValue('x');
- * assert s.charValue() == 'x';
- * assert s.getEscapedValue("\'x\'");
- * </pre>
- * </p>
- *
- * @param value the character value
- */
- public void setCharValue(char value) {
- StringBuffer b = new StringBuffer(3);
-
- b.append('\''); // opening delimiter
- switch(value) {
- case '\b' :
- b.append("\\b"); //$NON-NLS-1$
- break;
- case '\t' :
- b.append("\\t"); //$NON-NLS-1$
- break;
- case '\n' :
- b.append("\\n"); //$NON-NLS-1$
- break;
- case '\f' :
- b.append("\\f"); //$NON-NLS-1$
- break;
- case '\r' :
- b.append("\\r"); //$NON-NLS-1$
- break;
- case '\"':
- b.append("\\\""); //$NON-NLS-1$
- break;
- case '\'':
- b.append("\\\'"); //$NON-NLS-1$
- break;
- case '\\':
- b.append("\\\\"); //$NON-NLS-1$
- break;
- case '\0' :
- b.append("\\0"); //$NON-NLS-1$
- break;
- case '\1' :
- b.append("\\1"); //$NON-NLS-1$
- break;
- case '\2' :
- b.append("\\2"); //$NON-NLS-1$
- break;
- case '\3' :
- b.append("\\3"); //$NON-NLS-1$
- break;
- case '\4' :
- b.append("\\4"); //$NON-NLS-1$
- break;
- case '\5' :
- b.append("\\5"); //$NON-NLS-1$
- break;
- case '\6' :
- b.append("\\6"); //$NON-NLS-1$
- break;
- case '\7' :
- b.append("\\7"); //$NON-NLS-1$
- break;
- default:
- b.append(value);
- }
- b.append('\''); // closing delimiter
- setEscapedValue(b.toString());
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int memSize() {
- int size = BASE_NODE_SIZE + 1 * 4 + stringSize(escapedValue);
- return size;
- }
-
- /* (omit javadoc for this method)
- * Method declared on ASTNode.
- */
- int treeSize() {
- return memSize();
- }
-}
-
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