Initial commit: Tree-sitter grammar for Test Script

grammar.js

@@ -0,0 +1,158 @@
+module.exports = grammar({
+  name: 'test_script',
+
+  rules: {
+    source_file: $ => repeat($._item),
+
+    _item: $ => choice(
+      $.command,
+      $.comment,
+      $._whitespace
+    ),
+
+    // Test script commands
+    command: $ => choice(
+      $.load_command,
+      $.output_file_command,
+      $.compare_to_command,
+      $.output_list_command,
+      $.set_command,
+      $.eval_command,
+      $.output_command,
+      $.tick_command,
+      $.tock_command,
+      $.ticktock_command,
+      $.repeat_command,
+      $.while_command,
+      $.echo_command
+    ),
+
+    // File operations
+    load_command: $ => seq(
+      'load',
+      $.filename,
+      ','
+    ),
+
+    output_file_command: $ => seq(
+      'output-file',
+      $.filename,
+      ','
+    ),
+
+    compare_to_command: $ => seq(
+      'compare-to',
+      $.filename,
+      ','
+    ),
+
+    // Output commands
+    output_list_command: $ => seq(
+      'output-list',
+      repeat1($.output_spec),
+      ';'
+    ),
+
+    output_command: $ => seq(
+      'output',
+      ';'
+    ),
+
+    // Simulation control
+    tick_command: $ => seq('tick', ','),
+    tock_command: $ => seq('tock', ','),
+    ticktock_command: $ => seq('ticktock', ';'),
+
+    eval_command: $ => seq('eval', ','),
+
+    // Variable assignment
+    set_command: $ => seq(
+      'set',
+      $.variable_reference,
+      $.value,
+      ','
+    ),
+
+    // Control flow
+    repeat_command: $ => seq(
+      'repeat',
+      $.number,
+      '{',
+      repeat($._item),
+      '}'
+    ),
+
+    while_command: $ => seq(
+      'while',
+      $.condition,
+      '{',
+      repeat($._item),
+      '}'
+    ),
+
+    // Echo command for debugging
+    echo_command: $ => seq(
+      'echo',
+      $.string,
+      ';'
+    ),
+
+    // Variable references (RAM[index], register names, etc.)
+    variable_reference: $ => choice(
+      $.memory_reference,
+      $.register_reference,
+      $.pin_reference
+    ),
+
+    memory_reference: $ => seq(
+      'RAM',
+      '[',
+      $.index,
+      ']'
+    ),
+
+    register_reference: $ => choice(
+      'DRegister[]',
+      'ARegister[]',
+      'PC[]',
+      /[A-Z][a-zA-Z0-9_]*/
+    ),
+
+    pin_reference: $ => /[a-zA-Z][a-zA-Z0-9_]*/,
+
+    // Output format specifications
+    output_spec: $ => seq(
+      $.variable_reference,
+      optional($.format_spec)
+    ),
+
+    format_spec: $ => /%[BDSX]\d+\.\d+\.\d+/,
+
+    // Values
+    value: $ => choice(
+      $.number,
+      $.binary_value,
+      $.string
+    ),
+
+    binary_value: $ => /%B[01]+/,
+
+    // Basic tokens
+    number: $ => /\d+/,
+    index: $ => /\d+/,
+    filename: $ => /[a-zA-Z0-9_.-]+\.[a-zA-Z0-9]+/,
+    string: $ => /"[^"]*"/,
+    condition: $ => /[^{]+/,
+
+    // Comments
+    comment: $ => token(seq('//', /.*/)),
+
+    // Whitespace
+    _whitespace: $ => /\s+/
+  },
+
+  extras: $ => [
+    /\s/,
+    $.comment
+  ]
+});