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- /********************************************************************
- * 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;
- }
- }
-
- // public static char[] createShortName(char[] c) {
- // return createShortName(c, false);
- // }
-
- /**
- * Given 'Ppkg/MyGenericClass<Ljava/lang/String;Ljava/lang/Integer;>;' will return 'QMyGenericClass<QString;QInteger;>;'
- */
- public static char[] createShortName(char[] c, boolean haveFullyQualifiedAtLeastOneThing, boolean needsFullyQualifiedFirstEntry) {
- if (c[0] == '[') {
- char[] ret = CharOperation.concat(
- new char[] { '\\', '[' },
- createShortName(CharOperation.subarray(c, 1, c.length), haveFullyQualifiedAtLeastOneThing,
- needsFullyQualifiedFirstEntry));
- return ret;
- } else if (c[0] == '+') {
- char[] ret = CharOperation.concat(
- new char[] { '+' },
- createShortName(CharOperation.subarray(c, 1, c.length), haveFullyQualifiedAtLeastOneThing,
- needsFullyQualifiedFirstEntry));
- return ret;
- } else if (c[0] == '*') {
- return c; // c is *>;
- }
- 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'
- if (!needsFullyQualifiedFirstEntry) {
- return getTypeName(c, true);
- } else {
- return getTypeName(c, haveFullyQualifiedAtLeastOneThing);
- }
- } 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 CharOperation.concat(createShortName(first, haveFullyQualifiedAtLeastOneThing, needsFullyQualifiedFirstEntry),
- new char[] { ';' });
- } 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, haveFullyQualifiedAtLeastOneThing, true),
- BACKSLASH_LESSTHAN);
- return CharOperation.concat(inclLT, createShortName(second, true, false));
- } else if (smallest == gt) {
- char[] inclLT = CharOperation.concat(
- createShortName(first, haveFullyQualifiedAtLeastOneThing, needsFullyQualifiedFirstEntry), GREATER_THAN);
- return CharOperation.concat(inclLT, createShortName(second, true, false));
- } 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, haveFullyQualifiedAtLeastOneThing, false),
- SEMICOLON);
- return CharOperation.concat(firstTypeParam, createShortName(second, true, false));
- }
- }
-
- // public static char[] getTypeName(char[] name) {
- // return getTypeName(name, false);
- // }
-
- /**
- * Convert a typename into its handle form. There are various cases to consider here - many are discussed in pr249216. The flag
- * allreadyFQd indicates if we've already included a fq'd name in what we are creating - if we have then further references
- * should not be fq'd and can be the short name (so java.util.Set becomes just Set).
- *
- */
-
- /**
- * Given 'Qjava/lang/String;' returns 'QString;'
- */
- public static char[] getTypeName(char[] name, boolean haveFullyQualifiedAtLeastOneThing) {
- if (!haveFullyQualifiedAtLeastOneThing) {
- if (name[0] == RESOLVED || name[0] == PARAMETERIZED) {
- char[] sub = CharOperation.subarray(name, 1, name.length);
- CharOperation.replace(sub, '/', '.');
- return CharOperation.concat(new char[] { UNRESOLVED }, sub);
- } else {
- char[] sub = CharOperation.subarray(name, 1, name.length);
- CharOperation.replace(sub, '/', '.');
- return CharOperation.concat(new char[] { name[0] }, sub);
- }
- } else {
- 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;
- }
-
- }
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