feat: add gnu inline asm syntax

tree-sitter · Jun 10, 2023 · 7688778 · 7688778
1 parent 0906255
commit 7688778
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Showing 5 changed files with 54,160 additions and 50,716 deletions.
diff --git a/grammar.js b/grammar.js
@@ -752,6 +752,7 @@ module.exports = grammar({
       $.concatenated_string,
       $.char_literal,
       $.parenthesized_expression,
+      $.gnu_asm_expression,
     ),
 
     comma_expression: $ => seq(
@@ -889,6 +890,57 @@ module.exports = grammar({
       field('arguments', $.argument_list),
     )),
 
+    gnu_asm_expression: $ => prec(PREC.CALL, seq(
+      choice("asm", "__asm__"),
+      repeat($.gnu_asm_qualifier),
+      "(",
+      field('assembly_code', choice($.string_literal, $.concatenated_string)),
+      optional(seq(
+        field('output_operands', $.gnu_asm_operand_list),
+        optional(seq(
+          field('input_operands', $.gnu_asm_operand_list),
+          optional(seq(
+            field('clobbers', $.gnu_asm_clobber_list),
+            optional(field('goto_labels', $.gnu_asm_goto_list))
+          )),
+        )),
+      )),
+      ")",
+    )),
+
+    gnu_asm_qualifier: _ => choice(
+      "volatile",
+      "inline",
+      "goto",
+    ),
+
+    gnu_asm_operand_list: $ => seq(
+      ":",
+      commaSep(field("operand", $.gnu_asm_operand)),
+    ),
+
+    gnu_asm_operand: $ => seq(
+      optional(seq(
+        "[",
+        field('symbol', $.identifier),
+        "]",
+      )),
+      field('constraint', $.string_literal),
+      "(",
+      field('value', $.identifier),
+      ")",
+    ),
+
+    gnu_asm_clobber_list: $ => seq(
+      ":",
+      commaSep(field('register', $.string_literal)),
+    ),
+
+    gnu_asm_goto_list: $ => seq(
+      ":",
+      commaSep(field('label', $.identifier)),
+    ),
+
     argument_list: $ => seq('(', commaSep($._expression), ')'),
 
     field_expression: $ => seq(