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Diffstat (limited to 'tools/external/asm/org/objectweb/asm/tree/analysis/IntMap.java')
| -rw-r--r-- | tools/external/asm/org/objectweb/asm/tree/analysis/IntMap.java | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/tools/external/asm/org/objectweb/asm/tree/analysis/IntMap.java b/tools/external/asm/org/objectweb/asm/tree/analysis/IntMap.java new file mode 100644 index 000000000..9528482e7 --- /dev/null +++ b/tools/external/asm/org/objectweb/asm/tree/analysis/IntMap.java @@ -0,0 +1,73 @@ +/*** + * ASM: a very small and fast Java bytecode manipulation framework + * Copyright (c) 2000-2005 INRIA, France Telecom + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.objectweb.asm.tree.analysis; + +/** + * A fixed size map of integer values. + * + * @author Eric Bruneton + */ +class IntMap { + + private int size; + + private Object[] keys; + + private int[] values; + + public IntMap(final int size) { + this.size = size; + this.keys = new Object[size]; + this.values = new int[size]; + } + + public int get(final Object key) { + int n = size; + int h = (key.hashCode() & 0x7FFFFFFF) % n; + int i = h; + while (keys[i] != key) { + i = (i + 1) % n; + if (i == h) { + throw new RuntimeException("Cannot find index of " + key); + } + } + return values[i]; + } + + public void put(final Object key, final int value) { + int n = size; + int i = (key.hashCode() & 0x7FFFFFFF) % n; + while (keys[i] != null) { + i = (i + 1) % n; + } + keys[i] = key; + values[i] = value; + } +}
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