231396: refactoring: Moved CharOperation and NameConvertor

6 files changed, 419 insertions, 4 deletions

diff --git a/asm/src/org/aspectj/asm/internal/CharOperation.java b/asm/src/org/aspectj/asm/internal/CharOperation.java
new file mode 100644
index 000000000..6432c3a88
--- /dev/null
+++ b/asm/src/org/aspectj/asm/internal/CharOperation.java
@@ -0,0 +1,116 @@
+/********************************************************************
+ * Copyright (c) 2006 Contributors. 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://eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: IBM Corporation - initial API and implementation 
+ * 				 Helen Hawkins   - initial version
+ *******************************************************************/
+package org.aspectj.asm.internal;
+
+
+/**
+ * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+ *
+ */
+public class CharOperation {
+	
+	/**
+	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+	 */	
+	public static final char[] subarray(char[] array, int start, int end) {
+		if (end == -1)
+			end = array.length;
+		if (start > end)
+			return null;
+		if (start < 0)
+			return null;
+		if (end > array.length)
+			return null;
+
+		char[] result = new char[end - start];
+		System.arraycopy(array, start, result, 0, end - start);
+		return result;
+	}
+	
+	/**
+	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+	 */	
+	public static final int lastIndexOf(char toBeFound, char[] array) {
+		for (int i = array.length; --i >= 0;)
+			if (toBeFound == array[i])
+				return i;
+		return -1;
+	}
+	
+//	/**
+//	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+//	 */	
+//	public static final boolean contains(char character, char[] array) {
+//		for (int i = array.length; --i >= 0;)
+//			if (array[i] == character)
+//				return true;
+//		return false;
+//	}
+
+	/**
+	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+	 */	
+	public static final int indexOf(char toBeFound, char[] array) {
+		for (int i = 0; i < array.length; i++)
+			if (toBeFound == array[i])
+				return i;
+		return -1;
+	}
+	
+	/**
+	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+	 */	
+	public static final char[] concat(char[] first, char[] second) {
+		if (first == null)
+			return second;
+		if (second == null)
+			return first;
+
+		int length1 = first.length;
+		int length2 = second.length;
+		char[] result = new char[length1 + length2];
+		System.arraycopy(first, 0, result, 0, length1);
+		System.arraycopy(second, 0, result, length1, length2);
+		return result;
+	}
+	
+	/**
+	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+	 */	
+	public static final boolean equals(char[] first, char[] second) {
+		if (first == second)
+			return true;
+		if (first == null || second == null)
+			return false;
+		if (first.length != second.length)
+			return false;
+
+		for (int i = first.length; --i >= 0;)
+			if (first[i] != second[i])
+				return false;
+		return true;
+	}
+	
+	/**
+	 * Taken from org.aspectj.org.eclipse.jdt.core.compiler.CharOperation
+	 */	
+	public static final void replace(
+		char[] array,
+		char toBeReplaced,
+		char replacementChar) {
+		if (toBeReplaced != replacementChar) {
+			for (int i = 0, max = array.length; i < max; i++) {
+				if (array[i] == toBeReplaced)
+					array[i] = replacementChar;
+			}
+		}
+	}
+}
diff --git a/asm/src/org/aspectj/asm/internal/JDTLikeHandleProvider.java b/asm/src/org/aspectj/asm/internal/JDTLikeHandleProvider.java
index 712356e59..985c841c6 100644
--- a/asm/src/org/aspectj/asm/internal/JDTLikeHandleProvider.java
+++ b/asm/src/org/aspectj/asm/internal/JDTLikeHandleProvider.java
@@ -18,8 +18,6 @@ import org.aspectj.asm.AsmManager;
 import org.aspectj.asm.IElementHandleProvider;
 import org.aspectj.asm.IProgramElement;
 import org.aspectj.bridge.ISourceLocation;
-import org.aspectj.util.CharOperation;
-import org.aspectj.util.NameConvertor;
 
 /**
  * Creates JDT-like handles, for example
diff --git a/asm/src/org/aspectj/asm/internal/NameConvertor.java b/asm/src/org/aspectj/asm/internal/NameConvertor.java
new file mode 100644
index 000000000..bd4609979
--- /dev/null
+++ b/asm/src/org/aspectj/asm/internal/NameConvertor.java
@@ -0,0 +1,214 @@
+/********************************************************************
+ * Copyright (c) 2006 Contributors. 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://eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: IBM Corporation - initial API and implementation 
+ * 				 Helen Hawkins   - initial version
+ *******************************************************************/
+package org.aspectj.asm.internal;
+
+
+public class NameConvertor {
+
+	private static final char BOOLEAN 	= 'Z';
+	private static final char BYTE 		= 'B';
+	private static final char CHAR 		= 'C';
+	private static final char DOUBLE 	= 'D';
+	private static final char FLOAT 	= 'F';
+	private static final char INT 		= 'I';
+	private static final char LONG		= 'J';
+	private static final char SHORT		= 'S';
+	private static final char ARRAY		= '[';
+	private static final char RESOLVED = 'L';
+	private static final char UNRESOLVED = 'Q';
+	
+	public static final char PARAMETERIZED = 'P';
+	
+	private static final char[] BOOLEAN_NAME = new char[]{'b','o','o','l','e','a','n'};
+	private static final char[] BYTE_NAME = new char[]{'b','y','t','e'};
+	private static final char[] CHAR_NAME = new char[]{'c','h','a','r'};
+	private static final char[] DOUBLE_NAME = new char[]{'d','o','u','b','l','e'};
+	private static final char[] FLOAT_NAME = new char[]{'f','l','o','a','t'};
+	private static final char[] INT_NAME = new char[]{'i','n','t'};
+	private static final char[] LONG_NAME = new char[]{'l','o','n','g'};
+	private static final char[] SHORT_NAME = new char[]{'s','h','o','r','t'};
+
+	private static final char[] SQUARE_BRACKETS = new char[]{'[',']'};
+	private static final char[] GREATER_THAN = new char[]{'>'};
+	private static final char[] LESS_THAN = new char[]{'<'};
+	private static final char[] COMMA = new char[]{','};
+	private static final char[] BACKSLASH_LESSTHAN = new char[]{'\\','<'};
+	private static final char[] SEMICOLON = new char[]{';'};
+	
+	
+	/**
+	 * Creates a readable name from the given char array, for example, 
+	 * given 'I' returns 'int'. Moreover, given 
+	 * 'Ljava/lang/String;<Ljava/lang/String;>' returns
+	 * 'java.lang.String<java.lang.String>'
+	 */
+	public static char[] convertFromSignature(char[] c) {
+		int lt = CharOperation.indexOf('<',c);
+		int sc = CharOperation.indexOf(';',c);
+		int gt = CharOperation.indexOf('>',c);
+		
+		int smallest = 0;
+		if (lt  == -1 && sc == -1 && gt == -1) {
+			// we have something like 'Ljava/lang/String' or 'I'
+			return getFullyQualifiedTypeName(c);
+		} else if (lt != -1 && (sc == -1 || lt <= sc) && (gt == -1 || lt <= gt)) {
+			// we have something like 'Ljava/lang/String<I'
+			smallest = lt;
+		} else if (sc != -1 && (lt == -1 || sc <= lt) && (gt == -1 || sc <= gt)) {
+			// we have something like 'Ljava/lang/String;I'
+			smallest = sc;
+		} else {
+			// we have something like '>;'
+			smallest = gt;
+		}
+		char[] first = CharOperation.subarray(c,0,smallest);
+		char[] second = CharOperation.subarray(c,smallest+1,c.length);
+		if (smallest == 0 && first.length == 0 && c[0] == '>') {
+			// c = {'>',';'} therefore we just want to return '>' to
+			// close the generic signature
+			return GREATER_THAN;
+		} else if (first.length == 1 && second.length == 0) {
+			return first;
+		} else if (second.length == 0 || (second.length == 1 && second[0] == ';')){
+			// we've reached the end of the array, therefore only care about
+			// the first part
+			return convertFromSignature(first);
+		} else if (smallest == lt) {
+			// if c = 'Ljava/lang/String;<I' then first = 'Ljava/Lang/String;' and
+			// second = 'I'. Want to end up with 'Ljava.lang.String<I' and so add
+			// the '<' back.
+			char[] inclLT = CharOperation.concat(convertFromSignature(first),LESS_THAN);
+			return CharOperation.concat(inclLT,convertFromSignature(second));
+		} else if (smallest == gt) {
+			char[] inclLT = CharOperation.concat(convertFromSignature(first),GREATER_THAN);
+			return CharOperation.concat(inclLT,convertFromSignature(second));			
+		} else if (second.length != 2) {
+			// if c = 'Ljava/lang/Sting;LMyClass' then first = 'Ljava/lang/String'
+			// and second = 'LMyClass'. Want to end up with 'java.lang.String,MyClass
+			// so want to add a ','. However, only want to do this if we're in the 
+			// middle of a '<...>'
+			char[] inclComma = CharOperation.concat(convertFromSignature(first),COMMA);
+			return CharOperation.concat(inclComma,convertFromSignature(second));
+		}
+		return CharOperation.concat(convertFromSignature(first),convertFromSignature(second));
+	}
+	
+	
+	/**
+	 * Given a char array, returns the type name for this. For example
+	 * 'I' returns 'int', 'Ljava/lang/String' returns 'java.lang.String' and
+	 * '[Ljava/lang/String' returns 'java.lang.String[]'
+	 * 
+	 * NOTE: Doesn't go any deaper so given 'Ljava/lang/String;<Ljava/lang/String;>' 
+	 * it would return 'java.lang.String;<Ljava.lang.String;>', however, only called
+	 * with something like 'Ljava/lang/String'
+	 */
+	private static char[] getFullyQualifiedTypeName(char[] c) {
+		if (c.length == 0) {
+			return c;
+		} 
+		if (c[0] == BOOLEAN) {
+			return BOOLEAN_NAME;
+		} else if (c[0] == BYTE) {
+			return BYTE_NAME;
+		} else if (c[0] == CHAR) {
+			return CHAR_NAME;
+		} else if (c[0] == DOUBLE) {
+			return DOUBLE_NAME;
+		} else if (c[0] == FLOAT) {
+			return FLOAT_NAME;
+		} else if (c[0] == INT) {
+			return INT_NAME;
+		} else if (c[0] == LONG) {
+			return LONG_NAME;
+		} else if (c[0] == SHORT) {
+			return SHORT_NAME;
+		} else if (c[0] == ARRAY) {
+			return CharOperation.concat(
+					getFullyQualifiedTypeName(CharOperation.subarray(c,1,c.length)),
+					SQUARE_BRACKETS);
+		} else {
+			char[] type = CharOperation.subarray(c,1,c.length);
+			CharOperation.replace(type,'/','.');
+			return type;
+		}
+	}
+	
+	/**
+	 * Given 'Ppkg/MyGenericClass<Ljava/lang/String;Ljava/lang/Integer;>;'
+	 * will return 'QMyGenericClass<QString;QInteger;>;'
+	 */
+	public static char[] createShortName(char[] c) {
+		int lt = CharOperation.indexOf('<',c);
+		int sc = CharOperation.indexOf(';',c);
+		int gt = CharOperation.indexOf('>',c);
+		
+		int smallest = 0;
+		if (lt == -1 && sc == -1 && gt == -1) {
+			// we have something like 'Ljava/lang/String' or 'I'
+			return getTypeName(c);
+		} else if (lt != -1 && (sc == -1 || lt <= sc) && (gt == -1 || lt <= gt)) {
+			// we have something like 'Ljava/lang/String<I'
+			smallest = lt;
+		} else if (sc != -1 && (lt == -1 || sc <= lt) && (gt == -1 || sc <= gt)) {
+			// we have something like 'Ljava/lang/String;I'
+			smallest = sc;
+		} else {
+			// we have something like '>;'
+			smallest = gt;
+		}
+		char[] first = CharOperation.subarray(c,0,smallest);
+		char[] second = CharOperation.subarray(c,smallest+1,c.length);
+		if (smallest == 0 && first.length == 0 && c[0] == '>') {
+			// c = {'>',';'} therefore we just want to return c to
+			// close the generic signature
+			return c;
+		} else if (first.length == 1 && second.length == 0) {
+			return first;
+		} else if (second.length == 0 || (second.length == 1 && second[0] == ';')){
+			// we've reached the end of the array, therefore only care about
+			// the first part
+			return createShortName(first);
+		} else if (smallest == lt) {
+			// if c = 'Ljava/lang/String;<I' then first = 'Ljava/Lang/String;' and
+			// second = 'I'. Want to end up with 'LString<I' and so add
+			// the '<' back.
+			char[] inclLT = CharOperation.concat(createShortName(first),BACKSLASH_LESSTHAN);
+			return CharOperation.concat(inclLT,createShortName(second));
+		} else if (smallest == gt) {
+			char[] inclLT = CharOperation.concat(createShortName(first),GREATER_THAN);
+			return CharOperation.concat(inclLT,createShortName(second));			
+		} else {
+			// if c = 'Ljava/lang/Sting;LMyClass;' then first = 'Ljava/lang/String'
+			// and second = 'LMyClass;'. Want to end up with 'QString;QMyClass;
+			// so add the ';' back
+			char[] firstTypeParam = CharOperation.concat(createShortName(first),SEMICOLON);
+			return CharOperation.concat(firstTypeParam,createShortName(second));
+		}
+	}
+
+	/**
+	 * Given 'Qjava/lang/String;' returns 'QString;'
+	 */
+	public static char[] getTypeName(char[] name) {
+		int i = CharOperation.lastIndexOf('/',name);
+		if (i != -1) {
+			if (name[0] == RESOLVED || name[0] == PARAMETERIZED) {
+				return CharOperation.concat(new char[]{UNRESOLVED},
+						CharOperation.subarray(name,i+1,name.length));
+			} else {
+				return CharOperation.concat(new char[]{name[0]},
+						CharOperation.subarray(name,i+1,name.length));
+			}
+		}
+		return name;
+	}
+}
diff --git a/asm/src/org/aspectj/asm/internal/ProgramElement.java b/asm/src/org/aspectj/asm/internal/ProgramElement.java
index 7bf2b3e44..189133935 100644
--- a/asm/src/org/aspectj/asm/internal/ProgramElement.java
+++ b/asm/src/org/aspectj/asm/internal/ProgramElement.java
@@ -25,8 +25,6 @@ import org.aspectj.asm.HierarchyWalker;
 import org.aspectj.asm.IProgramElement;
 import org.aspectj.bridge.IMessage;
 import org.aspectj.bridge.ISourceLocation;
-import org.aspectj.util.CharOperation;
-import org.aspectj.util.NameConvertor;
 
 
 /**
diff --git a/asm/testsrc/org/aspectj/asm/AsmModuleTests.java b/asm/testsrc/org/aspectj/asm/AsmModuleTests.java
index 52f424d99..ebb500911 100644
--- a/asm/testsrc/org/aspectj/asm/AsmModuleTests.java
+++ b/asm/testsrc/org/aspectj/asm/AsmModuleTests.java
@@ -15,6 +15,8 @@ package org.aspectj.asm;
 
 // default package
 
+import org.aspectj.asm.NameConvertorTest;
+
 import junit.framework.*;
 
 public class AsmModuleTests extends TestCase {
@@ -22,6 +24,7 @@ public class AsmModuleTests extends TestCase {
     public static TestSuite suite() { 
         TestSuite suite = new TestSuite(AsmModuleTests.class.getName());
         suite.addTestSuite(AsmModuleTests.class); 
+        suite.addTestSuite(NameConvertorTest.class);
         return suite;
     }
 
diff --git a/asm/testsrc/org/aspectj/asm/NameConvertorTest.java b/asm/testsrc/org/aspectj/asm/NameConvertorTest.java
new file mode 100644
index 000000000..c1162eed2
--- /dev/null
+++ b/asm/testsrc/org/aspectj/asm/NameConvertorTest.java
@@ -0,0 +1,86 @@
+/********************************************************************
+ * Copyright (c) 2006 Contributors. 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://eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: IBM Corporation - initial API and implementation 
+ * 				 Helen Hawkins   - initial version
+ *******************************************************************/
+package org.aspectj.asm;
+
+import org.aspectj.asm.internal.CharOperation;
+import org.aspectj.asm.internal.NameConvertor;
+
+import junit.framework.TestCase;
+
+public class NameConvertorTest extends TestCase {
+
+	public void testBoolean() {
+		checkConversion("Z","boolean");
+	}
+	
+	public void testByte() {
+		checkConversion("B","byte");
+	}
+	
+	public void testChar() {
+		checkConversion("C","char");
+	}	
+	
+	public void testDouble() {
+		checkConversion("D","double");
+	}	
+	
+	public void testFloat() {
+		checkConversion("F","float");
+	}
+	
+	public void testInt() {
+		checkConversion("I","int");
+	}
+	
+	public void testLong() {
+		checkConversion("J","long");
+	}	
+	
+	public void testShort() {
+		checkConversion("S","short");
+	}	
+	
+	public void testString() {
+		checkConversion("Ljava/lang/String;","java.lang.String");
+	}
+
+	public void testType() {
+		checkConversion("LMyClass;","MyClass");
+	}
+
+	public void testListPameterizedWithString() {
+		checkConversion("Pjava/util/List<Ljava/lang/String;>;",
+				"java.util.List<java.lang.String>");
+	}
+	public void testClassParameterizedWithStringAndType() {
+		checkConversion("PMyGenericClass<Ljava/lang/String;LMyClass;>;",
+				"MyGenericClass<java.lang.String,MyClass>");
+	}
+	public void testStringArray() {
+		checkConversion("[Ljava/lang/String;","java.lang.String[]");
+	}
+	public void testTwoDimensionalStringArray() {
+		checkConversion("[[Ljava/lang/String;","java.lang.String[][]");
+	}
+	public void testIntArray() {
+		checkConversion("[I","int[]");
+	}
+
+	private void checkConversion(String signature, String expected) {
+		char[] c = NameConvertor.convertFromSignature(signature.toCharArray());
+		assertTrue("converting " + signature + ", expected " + expected + "," +
+				"but found " + String.valueOf(c),
+				CharOperation.equals(c,expected.toCharArray()));
+	}
+
+	
+}