org.jruby.RubyRange Maven / Gradle / Ivy
/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2001 Chad Fowler
* Copyright (C) 2001 Alan Moore
* Copyright (C) 2001 Ed Sinjiashvili
* Copyright (C) 2001-2004 Jan Arne Petersen
* Copyright (C) 2002 Benoit Cerrina
* Copyright (C) 2002-2006 Thomas E Enebo
* Copyright (C) 2002-2004 Anders Bengtsson
* Copyright (C) 2004 Stefan Matthias Aust
* Copyright (C) 2005 Charles O Nutter
* Copyright (C) 2006 Miguel Covarrubias
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the CPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the CPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby;
import static org.jruby.RubyEnumerator.enumeratorize;
import java.io.IOException;
import java.util.List;
import org.jcodings.Encoding;
import org.jruby.anno.JRubyClass;
import org.jruby.anno.JRubyMethod;
import org.jruby.exceptions.JumpException;
import org.jruby.exceptions.RaiseException;
import org.jruby.javasupport.util.RuntimeHelpers;
import org.jruby.runtime.Arity;
import org.jruby.runtime.Block;
import org.jruby.runtime.BlockBody;
import org.jruby.runtime.BlockCallback;
import org.jruby.runtime.CallBlock;
import org.jruby.runtime.ClassIndex;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.ObjectMarshal;
import org.jruby.runtime.ThreadContext;
import static org.jruby.runtime.Visibility.*;
import static org.jruby.CompatVersion.*;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.builtin.Variable;
import org.jruby.runtime.component.VariableEntry;
import org.jruby.runtime.marshal.MarshalStream;
import org.jruby.runtime.marshal.UnmarshalStream;
import org.jruby.util.ByteList;
import org.jruby.util.TypeConverter;
import static org.jruby.javasupport.util.RuntimeHelpers.invokedynamic;
import static org.jruby.runtime.MethodIndex.HASH;
import static org.jruby.runtime.MethodIndex.OP_CMP;
/**
* @author jpetersen
*/
@JRubyClass(name="Range", include="Enumerable")
public class RubyRange extends RubyObject {
private IRubyObject begin;
private IRubyObject end;
private boolean isExclusive;
public static RubyClass createRangeClass(Ruby runtime) {
RubyClass result = runtime.defineClass("Range", runtime.getObject(), RANGE_ALLOCATOR);
runtime.setRange(result);
result.index = ClassIndex.RANGE;
result.setReifiedClass(RubyRange.class);
result.kindOf = new RubyModule.KindOf() {
public boolean isKindOf(IRubyObject obj, RubyModule type) {
return obj instanceof RubyRange;
}
};
result.setMarshal(RANGE_MARSHAL);
result.includeModule(runtime.getEnumerable());
result.defineAnnotatedMethods(RubyRange.class);
return result;
}
private static final ObjectAllocator RANGE_ALLOCATOR = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klass) {
return new RubyRange(runtime, klass);
}
};
private RubyRange(Ruby runtime, RubyClass klass) {
super(runtime, klass);
begin = end = runtime.getNil();
}
public static RubyRange newRange(Ruby runtime, ThreadContext context, IRubyObject begin, IRubyObject end, boolean isExclusive) {
RubyRange range = new RubyRange(runtime, runtime.getRange());
range.init(context, begin, end, isExclusive);
return range;
}
public static RubyRange newExclusiveRange(Ruby runtime, ThreadContext context, IRubyObject begin, IRubyObject end) {
RubyRange range = new RubyRange(runtime, runtime.getRange());
range.init(context, begin, end, true);
return range;
}
public static RubyRange newInclusiveRange(Ruby runtime, ThreadContext context, IRubyObject begin, IRubyObject end) {
RubyRange range = new RubyRange(runtime, runtime.getRange());
range.init(context, begin, end, false);
return range;
}
@Override
public void copySpecialInstanceVariables(IRubyObject clone) {
RubyRange range = (RubyRange)clone;
range.begin = begin;
range.end = end;
range.isExclusive = isExclusive;
}
final boolean checkBegin(long length) {
long beg = RubyNumeric.num2long(this.begin);
if(beg < 0) {
beg += length;
if(beg < 0) {
return false;
}
} else if(length < beg) {
return false;
}
return true;
}
final long[] begLen(long len, int err){
long beg = RubyNumeric.num2long(this.begin);
long end = RubyNumeric.num2long(this.end);
if (beg < 0) {
beg += len;
if (beg < 0) {
if (err != 0) throw getRuntime().newRangeError(beg + ".." + (isExclusive ? "." : "") + end + " out of range");
return null;
}
}
if (err == 0 || err == 2) {
if (beg > len) {
if (err != 0) throw getRuntime().newRangeError(beg + ".." + (isExclusive ? "." : "") + end + " out of range");
return null;
}
if (end > len) end = len;
}
if (end < 0) end += len;
if (!isExclusive) end++;
len = end - beg;
if (len < 0) len = 0;
return new long[]{beg, len};
}
final int[] begLenInt(int len, int err){
int beg = RubyNumeric.num2int(this.begin);
int end = RubyNumeric.num2int(this.end);
if (beg < 0) {
beg += len;
if (beg < 0) {
if (err != 0) throw getRuntime().newRangeError(beg + ".." + (isExclusive ? "." : "") + end + " out of range");
return null;
}
}
if (err == 0 || err == 2) {
if (beg > len) {
if (err != 0) throw getRuntime().newRangeError(beg + ".." + (isExclusive ? "." : "") + end + " out of range");
return null;
}
if (end > len) end = len;
}
if (end < 0) end += len;
if (!isExclusive) end++;
len = end - beg;
if (len < 0) len = 0;
return new int[]{beg, len};
}
private void init(ThreadContext context, IRubyObject begin, IRubyObject end, boolean isExclusive) {
if (!(begin instanceof RubyFixnum && end instanceof RubyFixnum)) {
try {
IRubyObject result = invokedynamic(context, begin, OP_CMP, end);
if (result.isNil()) throw getRuntime().newArgumentError("bad value for range");
} catch (RaiseException re) {
throw getRuntime().newArgumentError("bad value for range");
}
}
this.begin = begin;
this.end = end;
this.isExclusive = isExclusive;
}
@JRubyMethod(required = 2, optional = 1, visibility = PRIVATE)
public IRubyObject initialize(ThreadContext context, IRubyObject[] args, Block unusedBlock) {
if (!begin.isNil() || !end.isNil()) {
throw getRuntime().newNameError("`initialize' called twice", "initialize");
}
init(context, args[0], args[1], args.length > 2 && args[2].isTrue());
return getRuntime().getNil();
}
@JRubyMethod(name = {"first", "begin"})
public IRubyObject first() {
return begin;
}
@JRubyMethod(name = {"last", "end"})
public IRubyObject last() {
return end;
}
@JRubyMethod(name = "hash")
public RubyFixnum hash(ThreadContext context) {
long hash = isExclusive ? 1 : 0;
long h = hash;
long v = invokedynamic(context, begin, HASH).convertToInteger().getLongValue();
hash ^= v << 1;
v = invokedynamic(context, end, HASH).convertToInteger().getLongValue();
hash ^= v << 9;
hash ^= h << 24;
return getRuntime().newFixnum(hash);
}
private static byte[] DOTDOTDOT = "...".getBytes();
private static byte[] DOTDOT = "..".getBytes();
@JRubyMethod(name = "inspect")
public IRubyObject inspect(ThreadContext context) {
RubyString str = inspect(context, begin).strDup(context.getRuntime());
RubyString str2 = inspect(context, end);
str.cat(isExclusive ? DOTDOTDOT : DOTDOT);
str.concat(str2);
str.infectBy(str2);
return str;
}
@JRubyMethod(name = "to_s")
public IRubyObject to_s(ThreadContext context) {
RubyString str = RubyString.objAsString(context, begin).strDup(context.getRuntime());
RubyString str2 = RubyString.objAsString(context, end);
str.cat(isExclusive ? DOTDOTDOT : DOTDOT);
str.concat(str2);
str.infectBy(str2);
return str;
}
@JRubyMethod(name = "exclude_end?")
public RubyBoolean exclude_end_p() {
return getRuntime().newBoolean(isExclusive);
}
@JRubyMethod(name = "==", required = 1)
public IRubyObject op_equal(ThreadContext context, IRubyObject other) {
if (this == other) return getRuntime().getTrue();
if (!(other instanceof RubyRange)) return getRuntime().getFalse();
RubyRange otherRange = (RubyRange) other;
if (equalInternal(context, begin, otherRange.begin) &&
equalInternal(context, end, otherRange.end) &&
isExclusive == otherRange.isExclusive) return getRuntime().getTrue();
return getRuntime().getFalse();
}
@JRubyMethod(name = "eql?", required = 1)
public IRubyObject eql_p(ThreadContext context, IRubyObject other) {
if (this == other) return getRuntime().getTrue();
if (!(other instanceof RubyRange)) return getRuntime().getFalse();
RubyRange otherRange = (RubyRange)other;
if (eqlInternal(context, begin, otherRange.begin) &&
eqlInternal(context, end, otherRange.end) &&
isExclusive == otherRange.isExclusive) return getRuntime().getTrue();
return getRuntime().getFalse();
}
private static abstract class RangeCallBack {
abstract void call(ThreadContext context, IRubyObject arg);
}
private static final class StepBlockCallBack extends RangeCallBack implements BlockCallback {
final Block block;
IRubyObject iter;
final IRubyObject step;
StepBlockCallBack(Block block, IRubyObject iter, IRubyObject step) {
this.block = block;
this.iter = iter;
this.step = step;
}
public IRubyObject call(ThreadContext context, IRubyObject[] args, Block originalBlock) {
call(context, args[0]);
return context.getRuntime().getNil();
}
void call(ThreadContext context, IRubyObject arg) {
if (iter instanceof RubyFixnum) {
iter = RubyFixnum.newFixnum(context.getRuntime(), ((RubyFixnum)iter).getLongValue() - 1);
} else {
iter = iter.callMethod(context, "-", RubyFixnum.one(context.getRuntime()));
}
if (iter == RubyFixnum.zero(context.getRuntime())) {
block.yield(context, arg);
iter = step;
}
}
}
private IRubyObject rangeLt(ThreadContext context, IRubyObject a, IRubyObject b) {
IRubyObject result = invokedynamic(context, a, OP_CMP, b);
if (result.isNil()) return null;
return RubyComparable.cmpint(context, result, a, b) < 0 ? getRuntime().getTrue() : null;
}
private IRubyObject rangeLe(ThreadContext context, IRubyObject a, IRubyObject b) {
IRubyObject result = invokedynamic(context, a, OP_CMP, b);
if (result.isNil()) return null;
int c = RubyComparable.cmpint(context, result, a, b);
if (c == 0) return RubyFixnum.zero(getRuntime());
return c < 0 ? getRuntime().getTrue() : null;
}
private void rangeEach(ThreadContext context, RangeCallBack callback) {
IRubyObject v = begin;
if (isExclusive) {
while (rangeLt(context, v, end) != null) {
callback.call(context, v);
v = v.callMethod(context, "succ");
}
} else {
IRubyObject c;
while ((c = rangeLe(context, v, end)) != null && c.isTrue()) {
callback.call(context, v);
if (c == RubyFixnum.zero(getRuntime())) break;
v = v.callMethod(context, "succ");
}
}
}
@JRubyMethod
public IRubyObject to_a(ThreadContext context, final Block block) {
final Ruby runtime = context.getRuntime();
if (begin instanceof RubyFixnum && end instanceof RubyFixnum) {
long lim = ((RubyFixnum) end).getLongValue();
if (!isExclusive) lim++;
long base = ((RubyFixnum) begin).getLongValue();
long size = lim - base;
if (size > Integer.MAX_VALUE) {
throw runtime.newRangeError("Range size too large for to_a");
}
if (size < 0) return RubyArray.newEmptyArray(runtime);
IRubyObject[] array = new IRubyObject[(int)size];
for (int i = 0; i < size; i++) {
array[i] = RubyFixnum.newFixnum(runtime, base + i);
}
return RubyArray.newArrayNoCopy(runtime, array);
} else {
return RubyEnumerable.to_a(context, this);
}
}
@JRubyMethod(compat = RUBY1_8)
public IRubyObject each(ThreadContext context, final Block block) {
final Ruby runtime = context.getRuntime();
if (!block.isGiven()) return enumeratorize(runtime, this, "each");
if (begin instanceof RubyFixnum && end instanceof RubyFixnum) {
fixnumEach(context, runtime, block);
} else if (begin instanceof RubyString) {
((RubyString) begin).uptoCommon18(context, end, isExclusive, block);
} else {
if (!begin.respondsTo("succ")) throw getRuntime().newTypeError(
"can't iterate from " + begin.getMetaClass().getName());
rangeEach(context, new RangeCallBack() {
@Override
void call(ThreadContext context, IRubyObject arg) {
block.yield(context, arg);
}
});
}
return this;
}
private void fixnumEach(ThreadContext context, Ruby runtime, Block block) {
long lim = ((RubyFixnum) end).getLongValue();
if (!isExclusive) lim++;
if (block.getBody().getArgumentType() == BlockBody.ZERO_ARGS) {
final IRubyObject nil = runtime.getNil();
for (long i = ((RubyFixnum) begin).getLongValue(); i < lim; i++) {
block.yield(context, nil);
}
} else {
for (long i = ((RubyFixnum) begin).getLongValue(); i < lim; i++) {
block.yield(context, RubyFixnum.newFixnum(runtime, i));
}
}
}
@JRubyMethod(name = "each", compat = RUBY1_9)
public IRubyObject each19(final ThreadContext context, final Block block) {
Ruby runtime = context.getRuntime();
if (!block.isGiven()) return enumeratorize(runtime, this, "each");
if (begin instanceof RubyFixnum && end instanceof RubyFixnum) {
fixnumEach(context, runtime, block);
} else if (begin instanceof RubyString) {
((RubyString) begin).uptoCommon19(context, end, isExclusive, block);
} else if (begin instanceof RubySymbol) {
begin.asString().uptoCommon19(context, end.asString(), isExclusive, block, true);
} else {
if (!begin.respondsTo("succ")) throw getRuntime().newTypeError(
"can't iterate from " + begin.getMetaClass().getName());
rangeEach(context, new RangeCallBack() {
@Override
void call(ThreadContext context, IRubyObject arg) {
block.yield(context, arg);
}
});
}
return this;
}
@JRubyMethod(compat = RUBY1_8)
public IRubyObject step(ThreadContext context, IRubyObject step, Block block) {
return block.isGiven() ? stepCommon(context, step, block) : enumeratorize(context.getRuntime(), this, "step", step);
}
@JRubyMethod(compat = RUBY1_8)
public IRubyObject step(ThreadContext context, Block block) {
return block.isGiven() ? stepCommon(context, RubyFixnum.one(context.getRuntime()), block) : enumeratorize(context.getRuntime(), this, "step");
}
private IRubyObject stepCommon(ThreadContext context, IRubyObject step, Block block) {
final Ruby runtime = context.getRuntime();
long unit = RubyNumeric.num2long(step);
if (unit < 0) throw runtime.newArgumentError("step can't be negative");
if (begin instanceof RubyFixnum && end instanceof RubyFixnum) {
if (unit == 0) throw runtime.newArgumentError("step can't be 0");
fixnumStep(context, runtime, unit, block);
} else {
IRubyObject tmp = begin.checkStringType();
if (!tmp.isNil()) {
if (unit == 0) throw runtime.newArgumentError("step can't be 0");
// rb_iterate((VALUE(*)_((VALUE)))str_step, (VALUE)args, step_i, (VALUE)iter);
StepBlockCallBack callback = new StepBlockCallBack(block, RubyFixnum.one(runtime), step);
Block blockCallback = CallBlock.newCallClosure(this, runtime.getRange(), Arity.singleArgument(), callback, context);
((RubyString)tmp).uptoCommon18(context, end, isExclusive, blockCallback);
} else if (begin instanceof RubyNumeric) {
if (equalInternal(context, step, RubyFixnum.zero(runtime))) throw runtime.newArgumentError("step can't be 0");
numericStep(context, runtime, step, block);
} else {
if (unit == 0) throw runtime.newArgumentError("step can't be 0");
if (!begin.respondsTo("succ")) throw runtime.newTypeError("can't iterate from " + begin.getMetaClass().getName());
// range_each_func(range, step_i, b, e, args);
rangeEach(context, new StepBlockCallBack(block, RubyFixnum.one(runtime), step));
}
}
return this;
}
private void fixnumStep(ThreadContext context, Ruby runtime, long unit, Block block) {
long e = ((RubyFixnum)end).getLongValue();
if (!isExclusive) e++;
for (long i = ((RubyFixnum)begin).getLongValue(); i < e; i += unit) {
block.yield(context, RubyFixnum.newFixnum(runtime, i));
}
}
private void numericStep(ThreadContext context, Ruby runtime, IRubyObject step, Block block) {
final String method = isExclusive ? "<" : "<=";
IRubyObject beg = begin;
while (beg.callMethod(context, method, end).isTrue()) {
block.yield(context, beg);
beg = beg.callMethod(context, "+", step);
}
}
@JRubyMethod(name = "step", compat = RUBY1_9)
public IRubyObject step19(final ThreadContext context, final Block block) {
return block.isGiven() ? stepCommon19(context, RubyFixnum.one(context.getRuntime()), block) : enumeratorize(context.getRuntime(), this, "step");
}
@JRubyMethod(name = "step", compat = RUBY1_9)
public IRubyObject step19(final ThreadContext context, IRubyObject step, final Block block) {
Ruby runtime = context.getRuntime();
if (!block.isGiven()) return enumeratorize(runtime, this, "step", step);
if (!(step instanceof RubyNumeric)) step = step.convertToInteger("to_int");
IRubyObject zero = RubyFixnum.zero(runtime);
if (step.callMethod(context, "<", zero).isTrue()) throw runtime.newArgumentError("step can't be negative");
if (!step.callMethod(context, ">", zero).isTrue()) throw runtime.newArgumentError("step can't be 0");
return stepCommon19(context, step, block);
}
private IRubyObject stepCommon19(ThreadContext context, IRubyObject step, Block block) {
Ruby runtime = context.getRuntime();
if (begin instanceof RubyFixnum && end instanceof RubyFixnum && step instanceof RubyFixnum) {
fixnumStep(context, runtime, ((RubyFixnum)step).getLongValue(), block);
} else if (begin instanceof RubyFloat || end instanceof RubyFloat || step instanceof RubyFloat) {
RubyNumeric.floatStep19(context, runtime, begin, end, step, isExclusive, block);
} else if (begin instanceof RubyNumeric ||
!checkIntegerType(runtime, begin, "to_int").isNil() ||
!checkIntegerType(runtime, end, "to_int").isNil()) {
numericStep19(context, runtime, step, block);
} else {
IRubyObject tmp = begin.checkStringType();
if (!tmp.isNil()) {
StepBlockCallBack callback = new StepBlockCallBack(block, RubyFixnum.one(runtime), step);
Block blockCallback = CallBlock.newCallClosure(this, runtime.getRange(), Arity.singleArgument(), callback, context);
((RubyString)tmp).uptoCommon19(context, end, isExclusive, blockCallback);
} else {
if (!begin.respondsTo("succ")) throw runtime.newTypeError("can't iterate from " + begin.getMetaClass().getName());
// range_each_func(range, step_i, b, e, args);
rangeEach(context, new StepBlockCallBack(block, RubyFixnum.one(runtime), step));
}
}
return this;
}
private void numericStep19(ThreadContext context, Ruby runtime, IRubyObject step, Block block) {
final String method = isExclusive ? "<" : "<=";
IRubyObject beg = begin;
long i = 0;
while (beg.callMethod(context, method, end).isTrue()) {
block.yield(context, beg);
i++;
beg = begin.callMethod(context, "+", RubyFixnum.newFixnum(runtime, i).callMethod(context, "*", step));
}
}
@JRubyMethod(name = {"include?", "member?", "==="}, required = 1, compat = RUBY1_8)
public RubyBoolean include_p(ThreadContext context, IRubyObject obj) {
if (rangeLe(context, begin, obj) != null) {
if (isExclusive) {
if (rangeLt(context, obj, end) != null) return context.getRuntime().getTrue();
} else {
if (rangeLe(context, obj, end) != null) return context.getRuntime().getTrue();
}
}
return context.getRuntime().getFalse();
}
// framed for invokeSuper
@JRubyMethod(name = {"include?", "member?"}, frame = true, compat = RUBY1_9)
public IRubyObject include_p19(ThreadContext context, IRubyObject obj) {
Ruby runtime = context.getRuntime();
if (begin instanceof RubyNumeric || end instanceof RubyNumeric ||
!TypeConverter.convertToTypeWithCheck(begin, runtime.getInteger(), "to_int").isNil() ||
!TypeConverter.convertToTypeWithCheck(end, runtime.getInteger(), "to_int").isNil()) {
if (rangeLe(context, begin, obj) != null) {
if (isExclusive) {
if (rangeLt(context, obj, end) != null) return runtime.getTrue();
} else {
if (rangeLe(context, obj, end) != null) return runtime.getTrue();
}
}
return runtime.getFalse();
} else if (begin instanceof RubyString && end instanceof RubyString &&
((RubyString) begin).getByteList().getRealSize() == 1 &&
((RubyString) end).getByteList().getRealSize() == 1) {
if (obj.isNil()) return runtime.getFalse();
if (obj instanceof RubyString) {
ByteList Vbytes = ((RubyString)obj).getByteList();
if (Vbytes.getRealSize() != 1) return runtime.getFalse();
int v = Vbytes.getUnsafeBytes()[Vbytes.getBegin()] & 0xff;
ByteList Bbytes = ((RubyString)begin).getByteList();
int b = Bbytes.getUnsafeBytes()[Bbytes.getBegin()] & 0xff;
ByteList Ebytes = ((RubyString)end).getByteList();
int e = Ebytes.getUnsafeBytes()[Ebytes.getBegin()] & 0xff;
if (Encoding.isAscii(v) && Encoding.isAscii(b) && Encoding.isAscii(e)) {
if ((b <= v && v < e) || (!isExclusive && v == e)) return runtime.getTrue();
return runtime.getFalse();
}
}
}
return RuntimeHelpers.invokeSuper(context, this, obj, Block.NULL_BLOCK);
}
@JRubyMethod(name = "===", compat = RUBY1_9)
public IRubyObject eqq_p19(ThreadContext context, IRubyObject obj) {
return callMethod(context, "include?", obj);
}
@JRubyMethod(name = "cover?", compat = RUBY1_9)
public IRubyObject cover_p(ThreadContext context, IRubyObject obj) {
return include_p(context, obj); // 1.8 "include?"
}
@JRubyMethod(compat = RUBY1_9, frame = true)
public IRubyObject min(ThreadContext context, Block block) {
if (block.isGiven()) {
return RuntimeHelpers.invokeSuper(context, this, block);
} else {
int c = RubyComparable.cmpint(context, invokedynamic(context, begin, OP_CMP, end), begin, end);
if (c > 0 || (c == 0 && isExclusive)) return context.getRuntime().getNil();
return begin;
}
}
@JRubyMethod(compat = RUBY1_9, frame = true)
public IRubyObject max(ThreadContext context, Block block) {
if (begin.callMethod(context, ">", end).isTrue()) {
return context.getRuntime().getNil();
}
if (block.isGiven() || isExclusive && !(end instanceof RubyNumeric)) {
return RuntimeHelpers.invokeSuper(context, this, block);
} else {
int c = RubyComparable.cmpint(context, invokedynamic(context, begin, OP_CMP, end), begin, end);
Ruby runtime = context.getRuntime();
if (isExclusive) {
if (!(end instanceof RubyInteger)) throw runtime.newTypeError("cannot exclude non Integer end value");
if (c == 0) return runtime.getNil();
if (end instanceof RubyFixnum) return RubyFixnum.newFixnum(runtime, ((RubyFixnum)end).getLongValue() - 1);
return end.callMethod(context, "-", RubyFixnum.one(runtime));
}
return end;
}
}
@JRubyMethod(name = "first", compat = RUBY1_9)
public IRubyObject first(ThreadContext context) {
return begin;
}
@JRubyMethod(name = "first", compat = RUBY1_9)
public IRubyObject first(ThreadContext context, IRubyObject arg) {
final Ruby runtime = context.getRuntime();
final int num = RubyNumeric.num2int(arg);
final RubyArray result = runtime.newArray(num);
try {
RubyEnumerable.callEach(runtime, context, this, Arity.ONE_ARGUMENT, new BlockCallback() {
int n = num;
public IRubyObject call(ThreadContext ctx, IRubyObject[] largs, Block blk) {
if (n-- <= 0) throw JumpException.SPECIAL_JUMP;
result.append(largs[0]);
return runtime.getNil();
}
});
} catch (JumpException.SpecialJump sj) {}
return result;
}
@JRubyMethod(name = "last", compat = RUBY1_9)
public IRubyObject last(ThreadContext context) {
return end;
}
@JRubyMethod(name = "last", compat = RUBY1_9)
public IRubyObject last(ThreadContext context, IRubyObject arg) {
return ((RubyArray)RubyKernel.new_array(context, this, this)).last(arg);
}
private static final ObjectMarshal RANGE_MARSHAL = new ObjectMarshal() {
public void marshalTo(Ruby runtime, Object obj, RubyClass type,
MarshalStream marshalStream) throws IOException {
RubyRange range = (RubyRange)obj;
marshalStream.registerLinkTarget(range);
List> attrs = range.getVariableList();
attrs.add(new VariableEntry © 2015 - 2025 Weber Informatics LLC | Privacy Policy