[PATCH 1/2] Subject: [GSOC][RFC PATCH 1/2] Add builtin patterns for JavaScript function detection in userdiff.
From: Sergius Justus Chesami Nyah <74214119+Sergius-Nyah@users.noreply.github.com>
This patch adds the regular expression for detecting JavaScript functions and expressions in Git diffs. The pattern accurately identifies function declerations, expressions, and definitions inside blocks.
---
userdiff.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/userdiff.c b/userdiff.c
index e399543823..12e31ff14d 100644
--- a/userdiff.c
+++ b/userdiff.c
@@ -1,7 +1,7 @@
#include "git-compat-util.h"
#include "config.h"
#include "userdiff.h"
-#include "attr.h"
+#include "attr.h"
#include "strbuf.h"
static struct userdiff_driver *drivers;
@@ -183,6 +183,19 @@ PATTERNS("java",
"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
"|[-+*/<>%&^|=!]="
"|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
+PATTERNS("javascript",
+ /*
+ * Looks for lines that start with optional whitespace, followed
+ * by 'function'* and any characters (for function declarations),
+ * or valid JavaScript identifiers, equals sign '=', 'function' keyword
+ * and any characters (for function expressions).
+ * Also considers functions defined inside blocks with '{...}'.
+ */
+ "^[ \t]*(function[ \t]*.*|[a-zA-Z_$][0-9a-zA-Z_$]*[ \t]*=[ \t]*function[ \t]*.*|(\\{[ \t]*)?)\n",
+ /* This pattern matches JavaScript identifiers */
+ "[a-zA-Z_$][0-9a-zA-Z_$]*"
+ "|[-+0-9.eE]+|0[xX][0-9a-fA-F]+"
+ "|[-+*/<>%&^|=!:]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\|"),
PATTERNS("kotlin",
"^[ \t]*(([a-z]+[ \t]+)*(fun|class|interface)[ \t]+.*)$",
/* -- */
@@ -192,7 +205,7 @@ PATTERNS("kotlin",
/* integers and floats */
"|[0-9][0-9_]*([.][0-9_]*)?([Ee][-+]?[0-9]+)?[fFlLuU]*"
/* floating point numbers beginning with decimal point */
- "|[.][0-9][0-9_]*([Ee][-+]?[0-9]+)?[fFlLuU]?"
+ "|[.][0-9][0-9_]*([Ee][-+]?[0-9]+ )?[fFlLuU]?"
/* unary and binary operators */
"|[-+*/<>%&^|=!]==?|--|\\+\\+|<<=|>>=|&&|\\|\\||->|\\.\\*|!!|[?:.][.:]"),
PATTERNS("markdown",
--
2.43.2