Initial commitv0.1.7

1 files changed, 898 insertions, 0 deletions

diff --git a/vendor/tree-sitter-zig/grammar.js b/vendor/tree-sitter-zig/grammar.js
new file mode 100644
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+++ b/vendor/tree-sitter-zig/grammar.js
@@ -0,0 +1,898 @@
+/**
+ * @file Zig grammar for tree-sitter
+ * @author Amaan Qureshi <amaanq12@gmail.com>
+ * @license MIT
+ */
+
+/// <reference types="tree-sitter-cli/dsl" />
+// @ts-check
+
+const PREC = {
+  PAREN_DECLARATOR: -10,
+  CONDITIONAL: -1,
+  DEFAULT: 0,
+  LOGICAL_OR: 1,
+  LOGICAL_AND: 2,
+  EQUAL: 3,
+  BITWISE: 4,
+  SHIFT: 5,
+  ADD: 6,
+  MULTIPLY: 7,
+  UNARY: 8,
+  STRUCT: 9,
+  MEMBER: 10,
+};
+
+const builtinTypes = [
+  'bool',
+  'f16',
+  'f32',
+  'f64',
+  'f128',
+  'void',
+  'type',
+  'anyerror',
+  'anyopaque',
+  'anytype',
+  'noreturn',
+  'isize',
+  'usize',
+  'comptime_int',
+  'comptime_float',
+  'c_short',
+  'c_ushort',
+  'c_int',
+  'c_uint',
+  'c_long',
+  'c_ulong',
+  'c_longlong',
+  'c_ulonglong',
+  'c_longdouble',
+  /(i|u)[1-9][0-9]*/,
+];
+
+module.exports = grammar({
+  name: 'zig',
+
+  conflicts: $ => [
+    [$.for_expression],
+    [$.while_expression],
+
+    [$.expression, $._function_prototype],
+    [$.expression, $.if_type_expression],
+
+    [$.comptime_type_expression, $.expression],
+    [$.comptime_type_expression, $.parameter],
+  ],
+
+  extras: $ => [
+    $.comment,
+    /\s/,
+  ],
+
+  inline: $ => [
+    $._reserved_identifier,
+  ],
+
+  precedences: $ => [
+    [$.container_field, $.type_expression],
+  ],
+
+  supertypes: $ => [
+    $.statement,
+    $.expression,
+    $.type_expression,
+    $.primary_type_expression,
+  ],
+
+  word: $ => $._identifier,
+
+  rules: {
+    source_file: $ => optional($._container_members),
+
+    _container_members: $ => choice(
+      seq(
+        repeat1(choice(
+          $.test_declaration,
+          $.comptime_declaration,
+          $.variable_declaration,
+          $.function_declaration,
+          $.using_namespace_declaration,
+          seq($.container_field, ','),
+        )),
+        optional($.container_field),
+      ),
+      $.container_field,
+    ),
+
+    test_declaration: $ => seq(
+      optional('pub'),
+      'test',
+      optional(choice($.string, $.identifier)),
+      $.block,
+    ),
+
+    comptime_declaration: $ => prec(1, seq(
+      optional('pub'),
+      'comptime',
+      $.block,
+    )),
+
+    container_field: $ => prec.right(prec.dynamic(1, seq(
+      optional('comptime'),
+      choice(
+        seq(
+          field('name', choice($.identifier, $._reserved_identifier, alias($.builtin_type, $.identifier))),
+          ':',
+          field('type', choice($.primary_type_expression, $.if_type_expression, $.comptime_type_expression)),
+        ),
+        field('name', choice($.primary_type_expression, $.if_type_expression, $.comptime_type_expression)),
+      ),
+      optional($.byte_alignment),
+      optional(seq('=', $.expression)),
+    ))),
+
+    variable_declaration: $ => seq(
+      optional('pub'),
+      optional(choice(
+        'export',
+        seq('extern', optional($.string)),
+      )),
+      optional('threadlocal'),
+      $._variable_declaration_header,
+      optional(seq('=', $.expression)),
+      ';',
+    ),
+
+    _variable_declaration_expression_statement: $ => choice(
+      seq(
+        $._variable_declaration_header,
+        repeat(prec(1, seq(',', choice($._variable_declaration_header, $.expression)))),
+        '=',
+        $.expression,
+        ';',
+      ),
+      seq(
+        $.expression,
+        choice(
+          seq(
+            choice(
+              '=', '*=', '*%=', '*|=', '/=', '%=',
+              '+=', '+%=', '+|=', '-=', '-%=', '-|=',
+              '<<=', '<<|=', '>>=', '&=', '^=', '|=',
+            ),
+            $.expression,
+          ),
+          seq(
+            repeat1(prec(1, seq(',', choice($._variable_declaration_header, $.expression)))),
+            '=',
+            $.expression,
+          ),
+        ),
+        ';',
+      ),
+    ),
+
+    _variable_declaration_header: $ => prec(1, seq(
+      choice('const', 'var'),
+      $.identifier,
+      optional(seq(
+        ':',
+        field('type', choice($.type_expression, $.if_type_expression, $.comptime_type_expression)),
+      )),
+      optional($.byte_alignment),
+      optional($.address_space),
+      optional($.link_section),
+    )),
+
+    function_declaration: $ => seq(
+      optional('pub'),
+      optional(choice(
+        'export',
+        seq('extern', optional($.string)),
+        'inline',
+        'noinline',
+      )),
+      $._function_prototype,
+      choice(
+        ';',
+        field('body', $.block),
+      ),
+    ),
+
+    _function_prototype: $ => seq(
+      'fn',
+      optional(field('name', $.identifier)),
+      $.parameters,
+      optional($.byte_alignment),
+      optional($.address_space),
+      optional($.link_section),
+      optional($.calling_convention),
+      field('type', choice($.type_expression, $.if_type_expression, $.comptime_type_expression)),
+    ),
+
+    parameters: $ => seq('(', optionalCommaSep($.parameter), ')'),
+
+    parameter: $ => choice(
+      seq(
+        optional(choice('noalias', 'comptime')),
+        optional(seq(
+          field('name', choice($.identifier, alias($.builtin_type, $.identifier))),
+          ':',
+        )),
+        field('type', choice($.type_expression, $.if_type_expression, $.comptime_type_expression)),
+      ),
+      '...',
+    ),
+
+    using_namespace_declaration: $ => seq(
+      optional('pub'),
+      'usingnamespace',
+      $.expression,
+      ';',
+    ),
+
+    block: $ => seq(
+      '{',
+      repeat($.statement),
+      '}',
+    ),
+
+    struct_declaration: $ => seq(
+      optional(choice('extern', 'packed')),
+      'struct',
+      optional(seq('(', $.expression, ')')),
+      '{',
+      $._container_members,
+      '}',
+    ),
+
+    opaque_declaration: $ => seq(
+      optional(choice('extern', 'packed')),
+      'opaque',
+      '{',
+      $._container_members,
+      '}',
+    ),
+
+    enum_declaration: $ => seq(
+      optional(choice('extern', 'packed')),
+      'enum',
+      optional(seq('(', $.expression, ')')),
+      '{',
+      $._container_members,
+      '}',
+    ),
+
+    union_declaration: $ => seq(
+      optional(choice('extern', 'packed')),
+      'union',
+      optional(seq(
+        '(',
+        choice(
+          seq('enum', optional(seq('(', $.expression, ')'))),
+          $.expression,
+        ),
+        ')',
+      )),
+      '{',
+      $._container_members,
+      '}',
+    ),
+
+    error_set_declaration: $ => seq(
+      'error',
+      '{',
+      optionalCommaSep($.identifier),
+      '}',
+    ),
+
+    statement: $ => choice(
+      $.comptime_statement,
+      $.nosuspend_statement,
+      $.suspend_statement,
+      $.defer_statement,
+      $.errdefer_statement,
+      $.expression_statement,
+      alias($._variable_declaration_expression_statement, $.variable_declaration),
+      $.if_statement,
+      $.for_statement,
+      $.while_statement,
+      $.labeled_statement,
+      prec(1, $.switch_expression),
+    ),
+
+    comptime_statement: $ => seq(
+      'comptime',
+      choice(
+        $._block_expr_statement,
+        alias($._variable_declaration_expression_statement, $.variable_declaration),
+      ),
+    ),
+
+    nosuspend_statement: $ => seq('nosuspend', $._block_expr_statement),
+
+    suspend_statement: $ => seq('suspend', $._block_expr_statement),
+
+    defer_statement: $ => seq('defer', $._block_expr_statement),
+
+    errdefer_statement: $ => seq('errdefer', optional($.payload), $._block_expr_statement),
+
+    _block_expr_statement: $ => prec(1, choice(
+      seq(optional($.block_label), $.block),
+      $.expression_statement,
+    )),
+
+    block_expression: $ => prec(1, seq(optional($.block_label), $.block)),
+
+    labeled_statement: $ => prec(1, seq(
+      optional($.block_label),
+      choice($.block, $.for_statement, $.while_statement),
+    )),
+
+    expression_statement: $ => seq($.expression, ';'),
+
+    if_statement: $ => seq(
+      $._if_prefix,
+      $._conditional_body,
+    ),
+
+    _if_prefix: $ => seq(
+      'if',
+      '(',
+      field('condition', $.expression),
+      ')',
+      optional($.payload),
+    ),
+
+    else_clause: $ => seq(
+      'else',
+      optional($.payload),
+      field('alternative', $.statement),
+    ),
+
+    for_statement: $ => seq(
+      optional('inline'),
+      $._for_prefix,
+      $._conditional_body,
+    ),
+
+    _for_prefix: $ => seq(
+      'for',
+      '(',
+      optionalCommaSep(seq(
+        $.expression,
+        optional(seq('..', $.expression)),
+      )),
+      ')',
+      $.payload,
+    ),
+
+    while_statement: $ => seq(
+      optional('inline'),
+      $._while_prefix,
+      $._conditional_body,
+    ),
+
+    _while_prefix: $ => seq(
+      'while',
+      '(',
+      field('condition', $.expression),
+      ')',
+      optional($.payload),
+      optional(seq(':', '(', $.expression, ')')),
+    ),
+
+    _conditional_body: $ => choice(
+      seq(
+        field('body', $.block_expression),
+        optional($.else_clause),
+      ),
+      seq(
+        field('body', $.expression),
+        choice(';', $.else_clause),
+      ),
+    ),
+
+    payload: $ => seq('|', optionalCommaSep1(seq(optional('*'), $.identifier)), '|'),
+
+    byte_alignment: $ => seq('align', '(', $.expression, ')'),
+
+    address_space: $ => seq('addrspace', '(', $.expression, ')'),
+
+    link_section: $ => seq('linksection', '(', $.expression, ')'),
+
+    calling_convention: $ => seq('callconv', '(', $.expression, ')'),
+
+    expression: $ => prec.right(choice(
+      $.asm_expression,
+      $.if_expression,
+      $.for_expression,
+      $.while_expression,
+      $.assignment_expression,
+      $.unary_expression,
+      $.binary_expression,
+      $.comptime_expression,
+      $.async_expression,
+      $.await_expression,
+      $.nosuspend_expression,
+      $.continue_expression,
+      $.resume_expression,
+      $.return_expression,
+      $.break_expression,
+      $.try_expression,
+      $.catch_expression,
+      $.type_expression,
+      $.block,
+    )),
+
+    asm_expression: $ => seq(
+      'asm',
+      optional('volatile'),
+      '(',
+      $.expression,
+      optional($.asm_output),
+      ')',
+    ),
+    asm_output: $ => seq(':', optionalCommaSep($.asm_output_item), optional($.asm_input)),
+    asm_output_item: $ => seq(
+      '[',
+      $.identifier,
+      ']',
+      choice($.string, $.multiline_string),
+      '(',
+      choice(seq('->', $.type_expression), $.identifier),
+      ')',
+    ),
+    asm_input: $ => seq(':', optionalCommaSep($.asm_input_item), optional($.asm_clobbers)),
+    asm_input_item: $ => seq(
+      '[',
+      $.identifier,
+      ']',
+      choice($.string, $.multiline_string),
+      '(',
+      $.expression,
+      ')',
+    ),
+    asm_clobbers: $ => seq(':', optionalCommaSep(choice($.string, $.multiline_string))),
+
+    if_expression: $ => prec.right(seq(
+      $._if_prefix,
+      $.expression,
+      optional(seq('else', optional($.payload), $.expression)),
+    )),
+
+    for_expression: $ => prec.right(seq(
+      optional($.block_label),
+      optional('inline'),
+      $._for_prefix,
+      $.expression,
+      optional(seq('else', $.expression)),
+    )),
+
+    while_expression: $ => prec.right(seq(
+      optional($.block_label),
+      optional('inline'),
+      $._while_prefix,
+      $.expression,
+      optional(seq('else', optional($.payload), $.expression)),
+    )),
+
+    assignment_expression: $ => prec.right(seq(
+      field('left', $.expression),
+      field('operator', choice(
+        '=', '*=', '*%=', '*|=', '/=', '%=',
+        '+=', '+%=', '+|=', '-=', '-%=', '-|=',
+        '<<=', '<<|=', '>>=', '&=', '^=', '|=',
+      )),
+      field('right', $.expression),
+    )),
+
+    unary_expression: $ => prec.left(PREC.UNARY, seq(
+      field('operator', choice('!', '~', '-', '-%', '&')),
+      field('argument', $.expression),
+    )),
+
+    binary_expression: $ => {
+      const table = [
+        ['or', PREC.LOGICAL_OR],
+        ['and', PREC.LOGICAL_AND],
+        ['==', PREC.EQUAL],
+        ['!=', PREC.EQUAL],
+        ['>', PREC.EQUAL],
+        ['>=', PREC.EQUAL],
+        ['<=', PREC.EQUAL],
+        ['<', PREC.EQUAL],
+        ['&', PREC.BITWISE],
+        ['^', PREC.BITWISE],
+        ['|', PREC.BITWISE],
+        ['orelse', PREC.BITWISE],
+        ['<<', PREC.SHIFT],
+        ['>>', PREC.SHIFT],
+        ['<<|', PREC.SHIFT],
+        ['+', PREC.ADD],
+        ['-', PREC.ADD],
+        ['++', PREC.ADD],
+        ['+%', PREC.ADD],
+        ['-%', PREC.ADD],
+        ['+|', PREC.ADD],
+        ['-|', PREC.ADD],
+        ['*', PREC.MULTIPLY],
+        ['/', PREC.MULTIPLY],
+        ['%', PREC.MULTIPLY],
+        ['**', PREC.MULTIPLY],
+        ['*%', PREC.MULTIPLY],
+        ['*|', PREC.MULTIPLY],
+        ['||', PREC.MULTIPLY],
+      ];
+
+      return choice(...table.map(([operator, precedence]) => {
+        return prec.left(precedence, seq(
+          field('left', $.expression),
+          // @ts-ignore
+          field('operator', operator),
+          field('right', $.expression),
+        ));
+      }));
+    },
+
+    comptime_expression: $ => prec.right(seq('comptime', $.expression)),
+
+    async_expression: $ => prec.right(seq('async', $.expression)),
+
+    await_expression: $ => prec.right(seq('await', $.expression)),
+
+    nosuspend_expression: $ => prec.right(seq('nosuspend', $.expression)),
+
+    continue_expression: $ => prec.right(seq(
+      'continue',
+      optional($.break_label),
+      optional($.expression),
+    )),
+
+    resume_expression: $ => prec.right(seq('resume', $.expression)),
+
+    return_expression: $ => prec.right(seq('return', optional($.expression))),
+
+    break_expression: $ => prec.right(seq(
+      'break',
+      optional($.break_label),
+      optional($.expression),
+    )),
+
+    try_expression: $ => prec.right(PREC.BITWISE, seq('try', $.expression)),
+
+    catch_expression: $ => prec.right(PREC.BITWISE, seq(
+      $.expression,
+      'catch',
+      optional($.payload),
+      $.expression,
+    )),
+
+    switch_expression: $ => seq(
+      optional($.block_label),
+      'switch',
+      '(', $.expression, ')',
+      '{',
+      optionalCommaSep($.switch_case),
+      '}',
+    ),
+    switch_case: $ => seq(
+      $._switch_case_exp,
+      '=>',
+      optional($.payload),
+      choice($.expression),
+    ),
+    _switch_case_exp: $ => seq(
+      optional('inline'),
+      choice(
+        optionalCommaSep1(seq($.expression, optional(seq('...', $.expression)))),
+        'else',
+      ),
+    ),
+
+    type_expression: $ => prec.right(choice(
+      $.anonymous_struct_initializer,
+      $.struct_initializer,
+      $.labeled_type_expression,
+      $.error_set_declaration,
+      $.parenthesized_expression,
+      $.primary_type_expression,
+    )),
+
+    primary_type_expression: $ => choice(
+      $.nullable_type,
+      $.anyframe_type,
+      $.slice_type,
+      $.pointer_type,
+      $.array_type,
+      $.error_union_type,
+      $.builtin_function,
+      $.character,
+      $.field_expression,
+      $.index_expression,
+      $.dereference_expression,
+      $.null_coercion_expression,
+      $.range_expression,
+      $.call_expression,
+      prec.right(alias($._function_prototype, $.function_signature)),
+      $.identifier,
+      $.float,
+      $.integer,
+      $.boolean,
+      $.error_type,
+      'anyframe',
+      'unreachable',
+      'undefined',
+      'null',
+      $.string,
+      $.multiline_string,
+      $.builtin_type,
+      $.struct_declaration,
+      $.opaque_declaration,
+      $.enum_declaration,
+      $.union_declaration,
+      $.switch_expression,
+    ),
+
+    nullable_type: $ => prec(1, seq(
+      '?',
+      choice($.type_expression, $.if_type_expression, $.comptime_type_expression),
+    )),
+
+    anyframe_type: $ => prec(1, seq(
+      'anyframe',
+      '->',
+      $.type_expression,
+    )),
+
+    slice_type: $ => prec.right(1, seq(
+      '[',
+      optional(seq(
+        ':',
+        field('sentinel', $.expression),
+      )),
+      ']',
+      repeat(choice(
+        $.byte_alignment,
+        $.address_space,
+        'const',
+        'volatile',
+        'allowzero',
+      )),
+      $.type_expression,
+    )),
+
+    pointer_type: $ => prec.right(1, seq(
+      choice(
+        '*',
+        seq(
+          '[',
+          '*',
+          optional(choice('c', seq(':', $.expression))),
+          ']',
+        ),
+      ),
+      repeat(choice(
+        $.address_space,
+        seq(
+          'align',
+          '(',
+          $.expression,
+          optional(seq(':', $.expression, ':', $.expression)),
+          ')',
+        ),
+        'const',
+        'volatile',
+        'allowzero',
+      )),
+      $.type_expression,
+    )),
+
+    array_type: $ => prec(1, seq(
+      '[',
+      $.expression,
+      optional(seq(':', $.expression)),
+      ']',
+      $.type_expression,
+    )),
+
+    error_union_type: $ => prec.right(2, seq(
+      optional(field('error', $.type_expression)),
+      '!',
+      field('ok', $.type_expression),
+    )),
+
+    field_expression: $ => prec(PREC.MEMBER, seq(
+      optional(field('object', $.expression)),
+      '.',
+      field('member', $.identifier),
+    )),
+
+    index_expression: $ => prec(PREC.MEMBER, seq(
+      field('object', $.expression),
+      '[',
+      field('index', $.expression),
+      optional(seq(':', field('sentinel', $.expression))),
+      ']',
+    )),
+
+    dereference_expression: $ => prec(PREC.MEMBER, seq($.expression, '.*')),
+
+    null_coercion_expression: $ => prec(PREC.MEMBER, seq($.expression, '.?')),
+
+    range_expression: $ => prec.right(PREC.MEMBER, seq(
+      field('left', $.expression),
+      '..',
+      optional(field('right', $.expression)),
+    )),
+
+    call_expression: $ => prec(PREC.MEMBER, seq(
+      field('function', $.expression),
+      field('arguments', $.arguments),
+    )),
+
+    anonymous_struct_initializer: $ => seq('.', $.initializer_list),
+
+    struct_initializer: $ => prec(-1, seq($.primary_type_expression, $.initializer_list)),
+
+    initializer_list: $ => seq(
+      '{',
+      choice(
+        optionalCommaSep($.field_initializer),
+        optionalCommaSep($.expression),
+      ),
+      '}',
+    ),
+
+    field_initializer: $ => seq(
+      '.',
+      $.identifier,
+      '=',
+      $.expression,
+    ),
+
+    labeled_type_expression: $ => seq($.block_label, $.block),
+
+    comptime_type_expression: $ => seq('comptime', $.type_expression),
+
+    if_type_expression: $ => prec.right(seq(
+      $._if_prefix,
+      $.type_expression,
+      optional(seq('else', optional($.payload), $.type_expression)),
+    )),
+
+    parenthesized_expression: $ => seq('(', $.expression, ')'),
+
+    block_label: $ => prec(-1, seq(
+      choice($.identifier, alias($.builtin_type, $.identifier)),
+      ':',
+    )),
+    break_label: $ => seq(':', $.identifier),
+
+    arguments: $ => seq('(', optionalCommaSep($.expression), ')'),
+
+    builtin_function: $ => seq(
+      $.builtin_identifier,
+      $.arguments,
+    ),
+
+    string: $ => seq(
+      '"',
+      repeat(choice(
+        alias(token.immediate(prec(1, /[^\\"\n]+/)), $.string_content),
+        $.escape_sequence,
+      )),
+      '"',
+    ),
+
+    multiline_string: _ => prec.right(repeat1(token(seq('\\\\', /[^\n]*/)))),
+
+    escape_sequence: _ => token(prec(1, seq(
+      '\\',
+      choice(
+        /[^xuU]/,
+        /\d{2,3}/,
+        /x[0-9a-fA-F]{2,}/,
+        /u\{[0-9a-fA-F]{1,6}\}/,
+      ),
+    ))),
+
+    character: $ => seq(
+      '\'',
+      choice(
+        alias(/[^'\n]/, $.character_content),
+        $.escape_sequence,
+      ),
+      '\'',
+    ),
+
+    integer: _ => {
+      const separator = '_';
+      const hex = /[0-9A-Fa-f]/;
+      const oct = /[0-7]/;
+      const bin = /[0-1]/;
+      const decimal = /[0-9]/;
+      const hexDigits = seq(repeat1(hex), repeat(seq(separator, repeat1(hex))));
+      const octDigits = seq(repeat1(oct), repeat(seq(separator, repeat1(oct))));
+      const binDigits = seq(repeat1(bin), repeat(seq(separator, repeat1(bin))));
+      const decimalDigits = seq(repeat1(decimal), repeat(seq(separator, repeat1(decimal))));
+
+      return token(choice(
+        seq('0x', hexDigits),
+        seq('0o', octDigits),
+        seq('0b', binDigits),
+        decimalDigits,
+      ));
+    },
+
+    float: _ => {
+      const separator = '_';
+      const hex = /[0-9A-Fa-f]/;
+      const decimal = /[0-9]/;
+      const hexDigits = seq(repeat1(hex), repeat(seq(separator, repeat1(hex))));
+      const decimalDigits = seq(repeat1(decimal), repeat(seq(separator, repeat1(decimal))));
+
+      return token(choice(
+        seq('0x', hexDigits, '.', hexDigits, optional(seq(/[pP][+-]?/, decimalDigits))),
+        seq(decimalDigits, '.', decimalDigits, optional(seq(/[eE][+-]?/, decimalDigits))),
+        seq('0x', hexDigits, /[pP][+-]?/, decimalDigits),
+        seq(decimalDigits, /[eE][+-]?/, decimalDigits),
+      ));
+    },
+
+    boolean: _ => choice('true', 'false'),
+
+    builtin_type: _ => choice(...builtinTypes),
+
+    error_type: $ => seq('error', '.', $.identifier),
+
+    builtin_identifier: _ => /@[A-Za-z_][A-Za-z0-9_]*/,
+
+    identifier: $ => choice($._identifier, seq('@', $.string)),
+    _identifier: _ => /[A-Za-z_][A-Za-z0-9_]*/,
+    _reserved_identifier: _ => choice(
+      'undefined',
+      'null',
+      'true',
+      'false',
+    ),
+
+    comment: _ => token(seq('//', /.*/)),
+  },
+});
+
+/**
+ * Creates a rule to match optionally match one or more of the rules
+ * separated by a comma and optionally ending with a comma
+ *
+ * @param {RuleOrLiteral} rule
+ *
+ * @returns {ChoiceRule}
+ */
+function optionalCommaSep(rule) {
+  return optional(optionalCommaSep1(rule));
+}
+
+/**
+ * Creates a rule to match one or more of the rules separated by a comma
+ * and optionally ending with a comma
+ *
+ * @param {RuleOrLiteral} rule
+ *
+ * @returns {SeqRule}
+ */
+function optionalCommaSep1(rule) {
+  return seq(commaSep1(rule), optional(','));
+}
+
+/**
+ * Creates a rule to match one or more of the rules separated by a comma
+ *
+ * @param {RuleOrLiteral} rule
+ *
+ * @returns {SeqRule}
+ */
+function commaSep1(rule) {
+  return seq(rule, repeat(seq(',', rule)));
+}