From a8cbc895893f4c244e54374d3bf937819fb6e2e9 Mon Sep 17 00:00:00 2001 From: Tassilo Horn Date: Wed, 11 Aug 2021 19:51:04 +0200 Subject: userdiff: improve java hunk header regex Currently, the git diff hunk headers show the wrong method signature if the method has a qualified return type, an array return type, or a generic return type because the regex doesn't allow dots (.), [], or < and > in the return type. Also, type parameter declarations couldn't be matched. Add several t4018 tests asserting the right hunk headers for different cases: - enum constant change - change in generic method with bounded type parameters - change in generic method with wildcard - field change in a nested class Signed-off-by: Tassilo Horn Signed-off-by: Junio C Hamano --- t/t4018/java-class-member-function | 4 ++++ t/t4018/java-enum-constant | 6 ++++++ t/t4018/java-method-return-generic-bounded | 9 +++++++++ t/t4018/java-method-return-generic-wildcard | 9 +++++++++ t/t4018/java-nested-field | 6 ++++++ userdiff.c | 6 +++++- 6 files changed, 39 insertions(+), 1 deletion(-) create mode 100644 t/t4018/java-enum-constant create mode 100644 t/t4018/java-method-return-generic-bounded create mode 100644 t/t4018/java-method-return-generic-wildcard create mode 100644 t/t4018/java-nested-field diff --git a/t/t4018/java-class-member-function b/t/t4018/java-class-member-function index 298bc7a71b..3b95f68b3b 100644 --- a/t/t4018/java-class-member-function +++ b/t/t4018/java-class-member-function @@ -3,6 +3,10 @@ public class Beer int special; public static void main(String RIGHT[]) { + someMethodCall(); + someOtherMethod("17") + .doThat(); + // Whatever System.out.print("ChangeMe"); } } diff --git a/t/t4018/java-enum-constant b/t/t4018/java-enum-constant new file mode 100644 index 0000000000..a1931c8379 --- /dev/null +++ b/t/t4018/java-enum-constant @@ -0,0 +1,6 @@ +private enum RIGHT { + ONE, + TWO, + THREE, + ChangeMe +} diff --git a/t/t4018/java-method-return-generic-bounded b/t/t4018/java-method-return-generic-bounded new file mode 100644 index 0000000000..66dd78c379 --- /dev/null +++ b/t/t4018/java-method-return-generic-bounded @@ -0,0 +1,9 @@ +class MyExample { + public , R> Map foo(String[] RIGHT) { + someMethodCall(); + someOtherMethod() + .doThat(); + // Whatever... + return (List) Arrays.asList("ChangeMe"); + } +} diff --git a/t/t4018/java-method-return-generic-wildcard b/t/t4018/java-method-return-generic-wildcard new file mode 100644 index 0000000000..96e9e5f2c1 --- /dev/null +++ b/t/t4018/java-method-return-generic-wildcard @@ -0,0 +1,9 @@ +class MyExample { + public List foo(String[] RIGHT) { + someMethodCall(); + someOtherMethod() + .doThat(); + // Whatever... + return Arrays.asList("ChangeMe"); + } +} diff --git a/t/t4018/java-nested-field b/t/t4018/java-nested-field new file mode 100644 index 0000000000..d92d3ec688 --- /dev/null +++ b/t/t4018/java-nested-field @@ -0,0 +1,6 @@ +class MyExample { + private static class RIGHT { + // change an inner class field + String inner = "ChangeMe"; + } +} diff --git a/userdiff.c b/userdiff.c index d9b2ba752f..af1f1c2a12 100644 --- a/userdiff.c +++ b/userdiff.c @@ -142,7 +142,11 @@ PATTERNS("html", "[^<>= \t]+"), PATTERNS("java", "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n" - "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$", + /* Class, enum, and interface declarations */ + "^[ \t]*(([a-z]+[ \t]+)*(class|enum|interface)[ \t]+[A-Za-z][A-Za-z0-9_$]*[ \t]+.*)$\n" + /* Method definitions; note that constructor signatures are not */ + /* matched because they are indistinguishable from method calls. */ + "^[ \t]*(([A-Za-z_<>&][][?&<>.,A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$", /* -- */ "[a-zA-Z_][a-zA-Z0-9_]*" "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?" -- cgit v1.2.3