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*/ |
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package java.lang; |
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final class LiveStackFrameInfo extends StackFrameInfo implements LiveStackFrame { |
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private static Object[] EMPTY_ARRAY = new Object[0]; |
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private static final int MODE_INTERPRETED = 0x01; |
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private static final int MODE_COMPILED = 0x02; |
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LiveStackFrameInfo(StackWalker walker) { |
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super(walker); |
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} |
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private Object[] monitors = EMPTY_ARRAY; |
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private Object[] locals = EMPTY_ARRAY; |
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private Object[] operands = EMPTY_ARRAY; |
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private int mode = 0; |
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@Override |
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public Object[] getMonitors() { |
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return monitors; |
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} |
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@Override |
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public Object[] getLocals() { |
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return locals; |
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} |
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@Override |
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public Object[] getStack() { |
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return operands; |
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} |
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@Override |
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public String toString() { |
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StringBuilder retVal = new StringBuilder(super.toString()); |
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if (mode != 0) { |
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retVal.append("("); |
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if ((mode & MODE_INTERPRETED) == MODE_INTERPRETED) { |
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retVal.append(" interpreted "); |
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} |
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if ((mode & MODE_COMPILED) == MODE_COMPILED) { |
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retVal.append(" compiled "); |
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} |
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retVal.append(")"); |
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} |
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return retVal.toString(); |
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} |
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/* |
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* Convert primitive value to {@code PrimitiveSlot} object to represent |
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* a local variable or an element on the operand stack of primitive type. |
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*/ |
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static PrimitiveSlot asPrimitive(int value) { |
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return new PrimitiveSlot32(value); |
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} |
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static PrimitiveSlot asPrimitive(long value) { |
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return new PrimitiveSlot64(value); |
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} |
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private static class PrimitiveSlot32 extends PrimitiveSlot { |
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final int value; |
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PrimitiveSlot32(int value) { |
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this.value = value; |
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} |
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@Override |
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public int size() { |
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return 4; |
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} |
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@Override |
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public int intValue() { |
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return value; |
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} |
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@Override |
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public String toString() { |
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return String.valueOf(value); |
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} |
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} |
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private static class PrimitiveSlot64 extends PrimitiveSlot { |
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final long value; |
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PrimitiveSlot64(long value) { |
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this.value = value; |
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} |
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@Override |
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public int size() { |
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return 8; |
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} |
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@Override |
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public long longValue() { |
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return value; |
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} |
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@Override |
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public String toString() { |
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return String.valueOf(value); |
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} |
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} |
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} |