lib: add Int::enumerate_*

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/lib/standard/kernel.nit b/lib/standard/kernel.nit
index 64de7c3..994ddf0 100644 (file)
--- a/lib/standard/kernel.nit
+++ b/lib/standard/kernel.nit
@@ -312,6 +312,28 @@ special Discrete
                        return (self + ('a'.ascii - 10)).ascii
                end
        end
+
+       # Executre 'each' for each integer in [self..last]
+       fun enumerate_to(last: Int)
+               !each(i: Int)
+       do
+               var cur = self
+               while cur <= last do
+                       each(cur)
+                       cur += 1
+               end
+       end
+
+       # Executre 'each' for each integer in [self..after[
+       fun enumerate_before(after: Int)
+               !each(i: Int)
+       do
+               var cur = self
+               while cur < after do
+                       each(cur)
+                       cur += 1
+               end
+       end
 end
 
 # Native characters.

diff --git a/tests/base_iterate_range.nit b/tests/base_iterate_range.nit
new file mode 100644 (file)
index 0000000..5d9a8c2
--- /dev/null
+++ b/tests/base_iterate_range.nit
@@ -0,0 +1,22 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2009 Jean Privat <jean@pryen.org>
+#
+# Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import range
+
+for i in [0..4] do i.output
+for i in [0..5[ do i.output
+0.enumerate_to(4) !each (i) do i.output
+0.enumerate_before(5) !each (i) do i.output

diff --git a/tests/sav/base_iterate_range.sav b/tests/sav/base_iterate_range.sav
new file mode 100644 (file)
index 0000000..efe5fae
--- /dev/null
+++ b/tests/sav/base_iterate_range.sav
@@ -0,0 +1,20 @@
+0
+1
+2
+3
+4
+0
+1
+2
+3
+4
+0
+1
+2
+3
+4
+0
+1
+2
+3
+4