first scanner /parser copied from the jdt java version

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / StringLiteral.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/StringLiteral.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/StringLiteral.java
new file mode 100644 (file)
index 0000000..85bf3c3
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/StringLiteral.java
@@ -0,0 +1,105 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v0.5 
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ ******************************************************************************/
+package net.sourceforge.phpdt.internal.compiler.ast;
+
+import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
+import net.sourceforge.phpdt.internal.compiler.codegen.CodeStream;
+import net.sourceforge.phpdt.internal.compiler.impl.Constant;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
+
+public class StringLiteral extends Literal {
+       char[] source;
+
+public StringLiteral(char[] token, int s, int e) {
+       this(s,e);
+       source = token;
+}
+public StringLiteral(int s, int e) {
+       super(s,e);
+}
+public void computeConstant() {
+
+       constant = Constant.fromValue(String.valueOf(source));}
+public ExtendedStringLiteral extendWith(CharLiteral lit){
+       //add the lit source to mine, just as if it was mine
+
+       return new ExtendedStringLiteral(this,lit);
+}
+public ExtendedStringLiteral extendWith(StringLiteral lit){
+       //add the lit source to mine, just as if it was mine
+
+       return new ExtendedStringLiteral(this,lit);
+}
+/**
+ * Code generation for string literal
+ *
+ * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
+ * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
+ * @param valueRequired boolean
+ */ 
+public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
+       int pc = codeStream.position;
+       if (valueRequired)
+               codeStream.ldc(constant.stringValue());
+       codeStream.recordPositionsFrom(pc, this.sourceStart);
+}
+public TypeBinding literalType(BlockScope scope) {
+       return scope.getJavaLangString();
+}
+/**
+ * source method comment.
+ */
+public char[] source() {
+       return source;
+}
+public String toStringExpression() {
+
+       // handle some special char.....
+       StringBuffer result = new StringBuffer("\""); //$NON-NLS-1$
+       for (int i = 0; i < source.length; i++) {
+               switch (source[i]) {
+                       case '\b' :
+                               result.append("\\b"); //$NON-NLS-1$
+                               break;
+                       case '\t' :
+                               result.append("\\t"); //$NON-NLS-1$
+                               break;
+                       case '\n' :
+                               result.append("\\n"); //$NON-NLS-1$
+                               break;
+                       case '\f' :
+                               result.append("\\f"); //$NON-NLS-1$
+                               break;
+                       case '\r' :
+                               result.append("\\r"); //$NON-NLS-1$
+                               break;
+                       case '\"' :
+                               result.append("\\\""); //$NON-NLS-1$
+                               break;
+                       case '\'' :
+                               result.append("\\'"); //$NON-NLS-1$
+                               break;
+                       case '\\' : //take care not to display the escape as a potential real char
+                               result.append("\\\\"); //$NON-NLS-1$
+                               break;
+                       default :
+                               result.append(source[i]);
+               }
+       }
+       result.append("\""); //$NON-NLS-1$
+       return result.toString();
+}
+public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
+       visitor.visit(this, scope);
+       visitor.endVisit(this, scope);
+}
+}