--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.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 kernel
+
+interface A
+ type V: A
+ fun foo(v: V): V is abstract
+end
+
+redef class Int
+ super A
+ redef type V: Int
+ redef fun foo(v) do return self
+end
+
+redef class Char
+ super A
+ redef type V: Char
+ redef fun foo(v) do return self
+end
+
+var d1: A = 1
+var d2: A = 2
+var c1: A = 'a'
+var c2: A = 'b'
+1.foo(2).output
+d1.foo(2).output
+#alt1#c1.foo(2).output
+#alt2#1.foo(d2).output
+d1.foo(d2).output
+#alt3#c1.foo(d2).output
+#alt4#1.foo(c2).output
+#alt5#d1.foo(c2).output
+c1.foo(c2).output
--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.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 kernel
+
+interface A
+ type V: A
+ fun foo(v: V): V is abstract
+end
+
+redef class Int
+ super A
+ redef type V: Int
+ redef fun foo(v) do return self
+end
+
+redef class Char
+ super A
+ redef type V: Char
+ redef fun foo(v) do return self
+end
+
+fun test(d: A)
+do
+ d.foo(5).output
+ #alt1#3.foo(d).output
+ d.foo(d).output
+ #alt2#d.foo('a').output
+ #alt3#5.as(A).foo(d).output
+end
+
+test(4)
--- /dev/null
+1
+1
+1
+a
\ No newline at end of file
--- /dev/null
+Runtime error: Cast failed (alt/base_covar_int2_alt1.nit:31)
+1
+1
--- /dev/null
+Runtime error: Cast failed (alt/base_covar_int2_alt1.nit)
+1
+1
--- /dev/null
+alt/base_covar_int2_alt2.nit:41,7--8: Type error: expected Int, got A
--- /dev/null
+Runtime error: Cast failed (alt/base_covar_int2_alt3.nit:31)
+1
+1
+1
--- /dev/null
+Runtime error: Cast failed (alt/base_covar_int2_alt3.nit)
+1
+1
+1
--- /dev/null
+alt/base_covar_int2_alt4.nit:44,7--8: Type error: expected Int, got A
--- /dev/null
+Runtime error: Cast failed (alt/base_covar_int2_alt5.nit:25)
+1
+1
+1
--- /dev/null
+Runtime error: Cast failed (alt/base_covar_int2_alt5.nit)
+1
+1
+1
--- /dev/null
+alt/base_virtual_int2_alt1.nit:37,8: Type error: expected Int, got A
--- /dev/null
+Runtime error: Cast failed (alt/base_virtual_int2_alt2.nit:25)
+4
+4
--- /dev/null
+Runtime error: Cast failed (alt/base_virtual_int2_alt2.nit)
+4
+4
--- /dev/null
+alt/base_virtual_int2_alt3.nit:40,2--8: Warning: Expression is already a A since it is a Int.
+4
+4
+5
--- /dev/null
+1
+1
+a1
+a
\ No newline at end of file
--- /dev/null
+1
+1
+1
+aa
\ No newline at end of file
--- /dev/null
+1
+1
+1
+1
+a
\ No newline at end of file
--- /dev/null
+1
+1
+a1
+a
\ No newline at end of file
--- /dev/null
+1
+1
+1
+aa
\ No newline at end of file
--- /dev/null
+1
+1
+1
+1
+a
\ No newline at end of file
--- /dev/null
+1
+1
+Cast error: Cannot cast Int to Char.
--- /dev/null
+1
+1
+1
+aa
\ No newline at end of file
--- /dev/null
+1
+1
+1
+1
+a
\ No newline at end of file
--- /dev/null
+4
+4
+Cast error: Cannot cast Char to Int.
nitlanguage / nit.git / commitdiff