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authorAndrei Rybak <rybak.a.v@gmail.com>2023-02-08 02:42:57 +0300
committerJunio C Hamano <gitster@pobox.com>2023-02-08 23:56:57 +0300
commit39226a8dacc866417be19b0a95b45e82d5975a84 (patch)
treed032291a406518442206d2ece535f991eece29fa /userdiff.c
parenta6a323b31e2bcbac2518bddec71ea7ad558870eb (diff)
userdiff: support Java type parameters
A class or interface in Java can have type parameters following the name in the declared type, surrounded by angle brackets (paired less than and greater than signs).[2] The type parameters -- `A` and `B` in the examples -- may follow the class name immediately: public class ParameterizedClass<A, B> { } or may be separated by whitespace: public class SpaceBeforeTypeParameters <A, B> { } A part of the builtin userdiff pattern for Java matches declarations of classes, enums, and interfaces. The regular expression requires at least one whitespace character after the name of the declared type. This disallows matching for opening angle bracket of type parameters immediately after the name of the type. Mandatory whitespace after the name of the type also disallows using the pattern in repositories with a fairly common code style that puts braces for the body of a class on separate lines: class WithLineBreakBeforeOpeningBrace { } Support matching Java code in more diverse code styles and declarations of classes and interfaces with type parameters immediately following the name of the type in the builtin userdiff pattern for Java. Do so by just matching anything until the end of the line after the keywords for the kind of type being declared. [1] Since Java 5 released in 2004. [2] Detailed description is available in the Java Language Specification, sections "Type Variables" and "Parameterized Types": https://docs.oracle.com/javase/specs/jls/se17/html/jls-4.html#jls-4.4 Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'userdiff.c')
-rw-r--r--userdiff.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/userdiff.c b/userdiff.c
index d71b82feb7..bc5f3ed4c3 100644
--- a/userdiff.c
+++ b/userdiff.c
@@ -171,7 +171,7 @@ PATTERNS("html",
PATTERNS("java",
"!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
/* Class, enum, and interface declarations */
- "^[ \t]*(([a-z]+[ \t]+)*(class|enum|interface)[ \t]+[A-Za-z][A-Za-z0-9_$]*[ \t]+.*)$\n"
+ "^[ \t]*(([a-z]+[ \t]+)*(class|enum|interface)[ \t]+.*)$\n"
/* Method definitions; note that constructor signatures are not */
/* matched because they are indistinguishable from method calls. */
"^[ \t]*(([A-Za-z_<>&][][?&<>.,A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",