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Posted to commits@groovy.apache.org by pa...@apache.org on 2020/05/21 11:58:48 UTC
[groovy] branch GROOVY_3_0_X updated: additional doco for dynamic
method selection
This is an automated email from the ASF dual-hosted git repository.
paulk pushed a commit to branch GROOVY_3_0_X
in repository https://gitbox.apache.org/repos/asf/groovy.git
The following commit(s) were added to refs/heads/GROOVY_3_0_X by this push:
new 0d0a894 additional doco for dynamic method selection
0d0a894 is described below
commit 0d0a89415d58a9676529b3562f1e49415d3f81a6
Author: Paul King <pa...@asert.com.au>
AuthorDate: Thu May 21 16:44:28 2020 +1000
additional doco for dynamic method selection
---
src/spec/doc/core-object-orientation.adoc | 7 +++++++
src/spec/test/objectorientation/MethodsTest.groovy | 10 ++++++++++
2 files changed, 17 insertions(+)
diff --git a/src/spec/doc/core-object-orientation.adoc b/src/spec/doc/core-object-orientation.adoc
index ffb6ba3..95820d1 100644
--- a/src/spec/doc/core-object-orientation.adoc
+++ b/src/spec/doc/core-object-orientation.adoc
@@ -529,6 +529,13 @@ a|
----
include::{projectdir}/src/spec/test/objectorientation/MethodsTest.groovy[tags=multi_method_distance_interface_over_super,indent=0]
----
+
+| For a primitive argument type, a declared parameter type which is the same or slightly larger is preferred.
+a|
+[source,groovy]
+----
+include::{projectdir}/src/spec/test/objectorientation/MethodsTest.groovy[tags=primitive_larger_over_smaller,indent=0]
+----
|====
In the case where two variants have exactly the same distance, this is deemed ambiguous and will cause a runtime exception:
diff --git a/src/spec/test/objectorientation/MethodsTest.groovy b/src/spec/test/objectorientation/MethodsTest.groovy
index 12f08fd..4b8cb91 100644
--- a/src/spec/test/objectorientation/MethodsTest.groovy
+++ b/src/spec/test/objectorientation/MethodsTest.groovy
@@ -241,6 +241,16 @@ class MethodsTest extends GroovyTestCase {
'''
assertScript '''
+ // tag::primitive_larger_over_smaller[]
+ def method(Long l) { 'Long' }
+ def method(Short s) { 'Short' }
+ def method(BigInteger bi) { 'BigInteger' }
+
+ assert method(35) == 'Long'
+ // end::primitive_larger_over_smaller[]
+ '''
+
+ assertScript '''
// tag::multi_method_distance_interface_over_super[]
interface I {}
class Base {}