Add support for parsing hyperlinks (#133)

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add support for hyperlinks: `\url`, `\href` ([#130](https://github.com/latex-lsp/tree-sitter-latex/issues/130))
+
 ### Fixed
 
 - Add missing citation commands: `\citeA`, `\citeR`, `\citeS`, `\citeyearR` ([#94](https://github.com/latex-lsp/tree-sitter-latex/issues/94))

grammar.js

@@ -577,6 +577,7 @@ module.exports = grammar({
         $.color_set_definition,
         $.color_reference,
         $.tikz_library_import,
+        $.hyperlink,
         $.generic_command,
       ),
 
@@ -1114,5 +1115,14 @@ module.exports = grammar({
         field('command', choice('\\text', '\\intertext', '\\shortintertext')),
         field('content', $.curly_group),
       ),
+
+    hyperlink: $ =>
+      prec.right(
+        seq(
+          field('command', choice('\\url', '\\href')),
+          field('url', $.curly_group_text),
+          field('label', optional($.curly_group)),
+        ),
+      ),
   },
 });

test/corpus/commands.txt

@@ -174,3 +174,56 @@ Text commands
       (text
         (word)
         (word)))))
+
+================================================================================
+Hyperlinks
+================================================================================
+
+\url{https://github.com/latex-lsp/tree-sitter-latex}
+
+\href{https://github.com/latex-lsp/tree-sitter-latex}{tree-sitter-latex}
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (hyperlink
+    (curly_group_text
+      (text
+        (word)
+        (operator)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word))))
+  (hyperlink
+    (curly_group_text
+      (text
+        (word)
+        (operator)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)))
+    (curly_group
+      (text
+        (word)
+        (operator)
+        (word)
+        (operator)
+        (word)))))