Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/core/range/FixnumRange.java @ 13514:0fbee3eb71f0
Ruby: import project.
author | Chris Seaton <chris.seaton@oracle.com> |
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date | Mon, 06 Jan 2014 17:12:09 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/core/range/FixnumRange.java Mon Jan 06 17:12:09 2014 +0000 @@ -0,0 +1,128 @@ +/* + * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This + * code is released under a tri EPL/GPL/LGPL license. You can use it, + * redistribute it and/or modify it under the terms of the: + * + * Eclipse Public License version 1.0 + * GNU General Public License version 2 + * GNU Lesser General Public License version 2.1 + */ +package com.oracle.truffle.ruby.runtime.core.range; + +import com.oracle.truffle.ruby.runtime.core.*; +import com.oracle.truffle.ruby.runtime.core.array.*; + +/** + * A range that has {@code Fixnum} begin and end. + */ +public class FixnumRange extends RubyRange { + + private final int begin; + private final int end; + private final boolean excludeEnd; + + public FixnumRange(RubyClass rangeClass, int begin, int end, boolean excludeEnd) { + super(rangeClass); + this.begin = begin; + this.end = end; + this.excludeEnd = excludeEnd; + } + + @Override + public String toString() { + if (excludeEnd) { + return begin + "..." + end; + } else { + return begin + ".." + end; + } + } + + @Override + public RubyArray toArray() { + final int length = getLength(); + + if (length < 0) { + return new RubyArray(getRubyClass().getContext().getCoreLibrary().getArrayClass()); + } else { + final int[] values = new int[length]; + + for (int n = 0; n < length; n++) { + values[n] = begin + n; + } + + return new RubyArray(getRubyClass().getContext().getCoreLibrary().getArrayClass(), new FixnumArrayStore(values)); + } + } + + private int getLength() { + if (excludeEnd) { + return end - begin; + } else { + return end - begin + 1; + } + } + + public final int getBegin() { + return begin; + } + + public final int getEnd() { + return end; + } + + public final int getInclusiveEnd() { + if (excludeEnd) { + return end - 1; + } else { + return end; + } + } + + public final int getExclusiveEnd() { + if (excludeEnd) { + return end; + } else { + return end + 1; + } + } + + @Override + public boolean doesExcludeEnd() { + return excludeEnd; + } + + @Override + public int hashCode() { + final int prime = 31; + int result = 1; + result = prime * result + begin; + result = prime * result + end; + result = prime * result + (excludeEnd ? 1231 : 1237); + return result; + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null) { + return false; + } + if (!(obj instanceof FixnumRange)) { + return false; + } + FixnumRange other = (FixnumRange) obj; + if (begin != other.begin) { + return false; + } + if (end != other.end) { + return false; + } + if (excludeEnd != other.excludeEnd) { + return false; + } + return true; + } + +}