feat: add support for dynamic class constant fetch

tree-sitter · Jan 5, 2024 · e0c5bd9 · e0c5bd9
1 parent 657546d
commit e0c5bd9
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Showing 6 changed files with 130,088 additions and 127,117 deletions.
diff --git a/common/define-grammar.js b/common/define-grammar.js
@@ -928,11 +928,20 @@ module.exports = function defineGrammar(dialect) {
 
       parenthesized_expression: $ => seq('(', $._expression, ')'),
 
-      class_constant_access_expression: $ => seq(
+      class_constant_access_expression: $ => choice(
+        $._class_constant_access_expression,
+        $._dynamic_class_constant_access_expression,
+      ),
+      _class_constant_access_expression: $ => seq(
         $._scope_resolution_qualifier,
         '::',
         choice($.name, alias($._reserved_identifier, $.name)),
       ),
+      _dynamic_class_constant_access_expression: $ => seq(
+        $._scope_resolution_qualifier,
+        '::',
+        alias(seq('{', $._expression, '}'), $.name),
+      ),
 
       print_intrinsic: $ => seq(
         keyword('print'), $._expression,

diff --git a/common/test/corpus/expressions.txt b/common/test/corpus/expressions.txt
@@ -1543,3 +1543,20 @@ $statement = match ($a) {
   )
 )
 
+===============================================
+Dynamic class constant access
+===============================================
+
+<?php
+Foo::{$bar};
+
+---
+
+(program
+  (php_tag)
+  (expression_statement
+    (class_constant_access_expression
+      (name)
+      (name)
+      (name (variable_name (name)))
+      (name))))
diff --git a/php/src/grammar.json b/php/src/grammar.json
@@ -4763,6 +4763,19 @@
       ]
     },
     "class_constant_access_expression": {
+      "type": "CHOICE",
+      "members": [
+        {
+          "type": "SYMBOL",
+          "name": "_class_constant_access_expression"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_dynamic_class_constant_access_expression"
+        }
+      ]
+    },
+    "_class_constant_access_expression": {
       "type": "SEQ",
       "members": [
         {
@@ -4793,6 +4806,41 @@
         }
       ]
     },
+    "_dynamic_class_constant_access_expression": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "SYMBOL",
+          "name": "_scope_resolution_qualifier"
+        },
+        {
+          "type": "STRING",
+          "value": "::"
+        },
+        {
+          "type": "ALIAS",
+          "content": {
+            "type": "SEQ",
+            "members": [
+              {
+                "type": "STRING",
+                "value": "{"
+              },
+              {
+                "type": "SYMBOL",
+                "name": "_expression"
+              },
+              {
+                "type": "STRING",
+                "value": "}"
+              }
+            ]
+          },
+          "named": true,
+          "value": "name"
+        }
+      ]
+    },
     "print_intrinsic": {
       "type": "SEQ",
       "members": [