X-Git-Url: http://git.phpeclipse.com diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/util/HashtableOfType.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/util/HashtableOfType.java index fbeec53..8102ee1 100644 --- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/util/HashtableOfType.java +++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/util/HashtableOfType.java @@ -16,81 +16,98 @@ import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding; public final class HashtableOfType { // to avoid using Enumerations, walk the individual tables skipping nulls public char[] keyTable[]; + public ReferenceBinding valueTable[]; int elementSize; // number of elements in the table + int threshold; -public HashtableOfType() { - this(3); -} -public HashtableOfType(int size) { - this.elementSize = 0; - this.threshold = size; // size represents the expected number of elements - int extraRoom = (int) (size * 1.75f); - if (this.threshold == extraRoom) - extraRoom++; - this.keyTable = new char[extraRoom][]; - this.valueTable = new ReferenceBinding[extraRoom]; -} -public boolean containsKey(char[] key) { - int index = CharOperation.hashCode(key) % valueTable.length; - int keyLength = key.length; - char[] currentKey; - while ((currentKey = keyTable[index]) != null) { - if (currentKey.length == keyLength && CharOperation.prefixEquals(currentKey, key)) - return true; - index = (index + 1) % keyTable.length; + + public HashtableOfType() { + this(3); } - return false; -} -public ReferenceBinding get(char[] key) { - int index = CharOperation.hashCode(key) % valueTable.length; - int keyLength = key.length; - char[] currentKey; - while ((currentKey = keyTable[index]) != null) { - if (currentKey.length == keyLength && CharOperation.prefixEquals(currentKey, key)) - return valueTable[index]; - index = (index + 1) % keyTable.length; + + public HashtableOfType(int size) { + this.elementSize = 0; + this.threshold = size; // size represents the expected number of + // elements + int extraRoom = (int) (size * 1.75f); + if (this.threshold == extraRoom) + extraRoom++; + this.keyTable = new char[extraRoom][]; + this.valueTable = new ReferenceBinding[extraRoom]; } - return null; -} -public ReferenceBinding put(char[] key, ReferenceBinding value) { - int index = CharOperation.hashCode(key) % valueTable.length; - int keyLength = key.length; - char[] currentKey; - while ((currentKey = keyTable[index]) != null) { - if (currentKey.length == keyLength && CharOperation.prefixEquals(currentKey, key)) - return valueTable[index] = value; - index = (index + 1) % keyTable.length; + + public boolean containsKey(char[] key) { + int index = CharOperation.hashCode(key) % valueTable.length; + int keyLength = key.length; + char[] currentKey; + while ((currentKey = keyTable[index]) != null) { + if (currentKey.length == keyLength + && CharOperation.prefixEquals(currentKey, key)) + return true; + index = (index + 1) % keyTable.length; + } + return false; } - keyTable[index] = key; - valueTable[index] = value; - // assumes the threshold is never equal to the size of the table - if (++elementSize > threshold) - rehash(); - return value; -} -private void rehash() { - HashtableOfType newHashtable = new HashtableOfType(elementSize < 100 ? 100 : elementSize * 2); // double the number of expected elements - char[] currentKey; - for (int i = keyTable.length; --i >= 0;) - if ((currentKey = keyTable[i]) != null) - newHashtable.put(currentKey, valueTable[i]); + public ReferenceBinding get(char[] key) { + int index = CharOperation.hashCode(key) % valueTable.length; + int keyLength = key.length; + char[] currentKey; + while ((currentKey = keyTable[index]) != null) { + if (currentKey.length == keyLength + && CharOperation.prefixEquals(currentKey, key)) + return valueTable[index]; + index = (index + 1) % keyTable.length; + } + return null; + } - this.keyTable = newHashtable.keyTable; - this.valueTable = newHashtable.valueTable; - this.threshold = newHashtable.threshold; -} -public int size() { - return elementSize; -} -public String toString() { - String s = ""; //$NON-NLS-1$ - ReferenceBinding type; - for (int i = 0, length = valueTable.length; i < length; i++) - if ((type = valueTable[i]) != null) - s += type.toString() + "\n"; //$NON-NLS-1$ - return s; -} + public ReferenceBinding put(char[] key, ReferenceBinding value) { + int index = CharOperation.hashCode(key) % valueTable.length; + int keyLength = key.length; + char[] currentKey; + while ((currentKey = keyTable[index]) != null) { + if (currentKey.length == keyLength + && CharOperation.prefixEquals(currentKey, key)) + return valueTable[index] = value; + index = (index + 1) % keyTable.length; + } + keyTable[index] = key; + valueTable[index] = value; + + // assumes the threshold is never equal to the size of the table + if (++elementSize > threshold) + rehash(); + return value; + } + + private void rehash() { + HashtableOfType newHashtable = new HashtableOfType( + elementSize < 100 ? 100 : elementSize * 2); // double the number + // of expected + // elements + char[] currentKey; + for (int i = keyTable.length; --i >= 0;) + if ((currentKey = keyTable[i]) != null) + newHashtable.put(currentKey, valueTable[i]); + + this.keyTable = newHashtable.keyTable; + this.valueTable = newHashtable.valueTable; + this.threshold = newHashtable.threshold; + } + + public int size() { + return elementSize; + } + + public String toString() { + String s = ""; //$NON-NLS-1$ + ReferenceBinding type; + for (int i = 0, length = valueTable.length; i < length; i++) + if ((type = valueTable[i]) != null) + s += type.toString() + "\n"; //$NON-NLS-1$ + return s; + } }