if (x instanceof RubyFixnum) { long ix = ((RubyFixnum)x).getLongValue(); if (ix == 0) { if (y instanceof RubyFixnum || y instanceof RubyBignum) return RubyFixnum.zero(runtime); } else if (ix == 1) { return y; } }
long iy = ((RubyFixnum)y).getLongValue(); if (iy == 0) { if (x instanceof RubyFixnum || x instanceof RubyBignum) return RubyFixnum.zero(runtime); } else if (iy == 1) { return x; }
Clone fragments detected by clone detection tool
File path: /jruby-1.4.0/src/org/jruby/util/Numeric.java File path: /jruby-1.4.0/src/org/jruby/util/Numeric.java
Method name: IRubyObject f_mul(ThreadContext, IRubyObject, IRubyObject) Method name: IRubyObject f_mul(ThreadContext, IRubyObject, IRubyObject)
Number of AST nodes: 7 Number of AST nodes: 6
1
if (x instanceof RubyFixnum) {
2
            long ix = ((RubyFixnum)x).getLongValue();
1
long iy = ((RubyFixnum)y).getLongValue();
3
            if (ix == 0) {
2
            if (iy == 0) {
4
                if (y instanceof RubyFixnum || y instanceof RubyBignum) return RubyFixnum.zero(runtime);
3
                if (x instanceof RubyFixnum || x instanceof RubyBignum) return RubyFixnum.zero(runtime);
5
            } else if (ix == 1) {
4
            } else if (iy == 1) {
6
                return y;
5
                return x;
7
            }
6
            }
8
        }
Summary
Number of common nesting structure subtrees1
Number of refactorable cases1
Number of non-refactorable cases0
Time elapsed for finding largest common nesting structure subtrees (ms)0.4
Clones locationClones are in the same method
Number of node comparisons11
  1. {Refactorable}
    Mapping Summary
    Number of mapped statements6
    Number of unmapped statements in the first code fragment0
    Number of unmapped statements in the second code fragment0
    Time elapsed for statement mapping (ms)1.0
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    10
    long ix = ((RubyFixnum)x).getLongValue();
    10
    long ix = ((RubyFixnum)x).getLongValue();
    3
    long iy = ((RubyFixnum)y).getLongValue();
    Differences
    Expression1Expression2Difference
    ixiyVARIABLE_NAME_MISMATCH
    xyVARIABLE_NAME_MISMATCH
    3
    long iy = ((RubyFixnum)y).getLongValue();
    11
    if (ix == 0)
    11
    if (ix == 0)
    4
    if (iy == 0)
    Differences
    Expression1Expression2Difference
    ixiyVARIABLE_NAME_MISMATCH
    4
    if (iy == 0)
    12
    if (y instanceof RubyFixnum || y instanceof RubyBignum)
    12
    if (y instanceof RubyFixnum || y instanceof RubyBignum)
    5
    if (x instanceof RubyFixnum || x instanceof RubyBignum)
    Differences
    Expression1Expression2Difference
    yxVARIABLE_NAME_MISMATCH
    yxVARIABLE_NAME_MISMATCH
    5
    if (x instanceof RubyFixnum || x instanceof RubyBignum)
    13
    return RubyFixnum.zero(runtime);
    6
    return RubyFixnum.zero(runtime);
    14
    else if (ix == 1)
    14
    else if (ix == 1)
    7
    else if (iy == 1)
    Differences
    Expression1Expression2Difference
    ixiyVARIABLE_NAME_MISMATCH
    7
    else if (iy == 1)
    15
    return y;
    15
    return y;
    8
    return x;
    Differences
    Expression1Expression2Difference
    yxVARIABLE_NAME_MISMATCH
    8
    return x;
    Precondition Violations (0)
    Row Violation