ruby-changes:15323
From: marcandre <ko1@a...>
Date: Sun, 4 Apr 2010 06:00:10 +0900 (JST)
Subject: [ruby-changes:15323] Ruby:r27210 (trunk): * array.c (rb_ary_product): Don't limit based on size when a block is given
marcandre 2010-04-04 05:59:56 +0900 (Sun, 04 Apr 2010) New Revision: 27210 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=27210 Log: * array.c (rb_ary_product): Don't limit based on size when a block is given cf [ruby-core:29240] * test/ruby/test_array.rb (class): Test for above Modified files: trunk/array.c trunk/test/ruby/test_array.rb Index: array.c =================================================================== --- array.c (revision 27209) +++ array.c (revision 27210) @@ -4092,25 +4092,30 @@ /* initialize the counters for the arrays */ for (i = 0; i < n; i++) counters[i] = 0; - /* Compute the length of the result array; return [] if any is empty */ - for (i = 0; i < n; i++) { - long k = RARRAY_LEN(arrays[i]), l = resultlen; - if (k == 0) return rb_block_given_p() ? ary : rb_ary_new2(0); - resultlen *= k; - if (resultlen < k || resultlen < l || resultlen / k != l) { - rb_raise(rb_eRangeError, "too big to product"); - } - } - /* Otherwise, allocate and fill in an array of results */ if (rb_block_given_p()) { - /* Make defensive copies of arrays */ - for (i = 0; i < n; i++) arrays[i] = ary_make_substitution(arrays[i]); + /* Make defensive copies of arrays; exit if any is empty */ + for (i = 0; i < n; i++) { + if (RARRAY_LEN(arrays[i]) == 0) goto done; + arrays[i] = ary_make_substitution(arrays[i]); + } } else { + /* Compute the length of the result array; return [] if any is empty */ + for (i = 0; i < n; i++) { + long k = RARRAY_LEN(arrays[i]), l = resultlen; + if (k == 0) { + result = rb_ary_new2(0); + goto done; + } + resultlen *= k; + if (resultlen < k || resultlen < l || resultlen / k != l) { + rb_raise(rb_eRangeError, "too big to product"); + } + } result = rb_ary_new2(resultlen); } - for (i = 0; i < resultlen; i++) { + for (;;) { int m; /* fill in one subarray */ VALUE subarray = rb_ary_new2(n); @@ -4135,12 +4140,14 @@ */ m = n-1; counters[m]++; - while (m > 0 && counters[m] == RARRAY_LEN(arrays[m])) { + while (counters[m] == RARRAY_LEN(arrays[m])) { counters[m] = 0; - m--; + /* If the first counter overlows, we are done */ + if (--m < 0) goto done; counters[m]++; } } +done: tmpbuf_discard(t0); tmpbuf_discard(t1); Index: test/ruby/test_array.rb =================================================================== --- test/ruby/test_array.rb (revision 27209) +++ test/ruby/test_array.rb (revision 27210) @@ -1850,8 +1850,11 @@ def test_product2 a = (0..100).to_a assert_raise(RangeError) do - a.product(a, a, a, a, a, a, a, a, a, a) {} + a.product(a, a, a, a, a, a, a, a, a, a) end + assert_nothing_raised(RangeError) do + a.product(a, a, a, a, a, a, a, a, a, a) { break } + end end class Array2 < Array -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/