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Cover compiler syntax test #305

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179 changes: 151 additions & 28 deletions grammar.js
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,9 @@ export default grammar({
[$._record_element, $._record_single_field],
[$._record_pun_field, $._record_single_pun_field],
[$._record_field_name, $.record_pattern],
[$.primary_expression, $._record_field_name],
[$.primary_expression, $._record_field_name, $.record_pattern],
[$.primary_expression, $.object_field],
[$._statement, $._switch_body],
[$._inline_type, $.function_type_parameters],
[$.primary_expression, $.parameter, $._pattern],
Expand All @@ -150,6 +153,11 @@ export default grammar({
[$._record_type_member, $._object_type_member],
[$._non_function_inline_type, $.generic_type],
[$._type_identifier, $.polymorphic_type],
[$.functor, $.module_expression],
[$._jsx_child, $.tagged_template],
[$.call_expression, $._jsx_child],
[$.subscript_expression, $._jsx_child],
[$.expression, $.coercion_expression],
],

rules: {
Expand Down Expand Up @@ -253,7 +261,13 @@ export default grammar({

functor: ($) =>
seq(
field('parameters', $.functor_parameters),
field(
'parameters',
choice(
$.functor_parameters,
alias($.module_primary_expression, $.functor_parameter),
),
),
optional(field('return_module_type', $.module_type_annotation)),
'=>',
field('body', $._module_definition),
Expand All @@ -263,10 +277,14 @@ export default grammar({
seq('(', optional(commaSep1t($.functor_parameter)), ')'),

functor_parameter: ($) =>
seq($.module_identifier, optional($.module_type_annotation)),
choice(
seq($.module_identifier, optional($.module_type_annotation)),
seq('_', $.module_type_annotation),
$.unit,
),

module_type_annotation: ($) =>
seq(':', choice($.module_expression, $.block)),
seq(':', choice($.module_expression, $.block, $.functor)),

external_declaration: ($) =>
seq('external', $.value_identifier, $.type_annotation, '=', $.string),
Expand All @@ -276,6 +294,7 @@ export default grammar({
'exception',
$.variant_identifier,
optional($.variant_parameters),
optional($.type_annotation),
optional(
seq('=', choice($.variant_identifier, $.nested_variant_identifier)),
),
Expand All @@ -295,7 +314,12 @@ export default grammar({
optional($.type_parameters),
optional(
choice(
seq('=', $.extensible_type),
seq(
'=',
optional('private'),
$.extensible_type,
repeat($.type_constraint),
),
seq(
optional(seq('=', $._non_function_inline_type)),
optional(
Expand Down Expand Up @@ -339,6 +363,7 @@ export default grammar({
$.module_pack,
$.unit,
$.polymorphic_type,
$.extension_expression,
alias($._as_aliasing_non_function_inline_type, $.as_aliasing_type),
),

Expand Down Expand Up @@ -366,7 +391,15 @@ export default grammar({
seq(
$.variant_identifier,
optional($.variant_parameters),
optional($.type_annotation),
optional(
choice(
$.type_annotation,
seq(
'=',
choice($.variant_identifier, $.nested_variant_identifier),
),
),
),
),
),

Expand All @@ -387,7 +420,11 @@ export default grammar({
polyvar_declaration: ($) =>
prec.right(
choice(
seq($.polyvar_identifier, optional($.polyvar_parameters)),
seq(
$.polyvar_identifier,
optional($.polyvar_parameters),
repeat(seq('&', $._type)),
),
$._inline_type,
),
),
Expand Down Expand Up @@ -517,6 +554,7 @@ export default grammar({
$.lazy_expression,
$._jsx_element,
$.regex,
$.tagged_template,
),

parenthesized_expression: ($) =>
Expand Down Expand Up @@ -675,17 +713,29 @@ export default grammar({
prec(
'call',
seq(
field('function', $.primary_expression),
field('function', choice($.primary_expression, $.block)),
field('arguments', alias($.call_arguments, $.arguments)),
),
),

pipe_expression: ($) =>
prec.left(
seq(
choice($.primary_expression, $.block),
choice(
$.primary_expression,
$.block,
$.for_expression,
$.while_expression,
$.mutation_expression,
),
choice('->', '|>'),
choice($.primary_expression, $.block),
choice(
$.primary_expression,
$.block,
$.for_expression,
$.while_expression,
$.mutation_expression,
),
),
),

Expand Down Expand Up @@ -719,6 +769,7 @@ export default grammar({
optional(
choice(
'?',
$.type_annotation,
seq(
'=',
optional('?'),
Expand Down Expand Up @@ -791,11 +842,13 @@ export default grammar({
seq(
choice(
seq(optional('?'), $.value_identifier),
seq('?', $.parenthesized_pattern),
$._literal_pattern,
$._destructuring_pattern,
$.polyvar_type_pattern,
$.unit,
$.module_pack,
$.extension_expression,
$.lazy_pattern,
$.parenthesized_pattern,
$.or_pattern,
Expand Down Expand Up @@ -895,7 +948,11 @@ export default grammar({
dict_pattern_entry: ($) => seq($.string, ':', $._pattern),

_collection_element_pattern: ($) =>
seq(choice($._pattern, $.spread_pattern), optional($.as_aliasing)),
seq(
choice($._pattern, $.spread_pattern),
optional($.type_annotation),
optional($.as_aliasing),
),

spread_pattern: ($) =>
seq('...', choice($.value_identifier, $.list_pattern, $.array_pattern)),
Expand Down Expand Up @@ -1003,13 +1060,24 @@ export default grammar({
),

decorator_arguments: ($) =>
seq('(', choice(commaSept($.expression), $.type_annotation), ')'),
seq(
'(',
choice(
commaSept($.decorator_argument),
$.declaration,
$.type_annotation,
),
')',
),

decorator_argument: ($) =>
seq(optional('?'), $.expression, optional($.guard)),

subscript_expression: ($) =>
prec.right(
'member',
seq(
field('object', $.primary_expression),
field('object', choice($.primary_expression, $.block)),
'[',
field('index', $.expression),
']',
Expand All @@ -1020,7 +1088,7 @@ export default grammar({
prec(
'member',
seq(
field('record', $.primary_expression),
field('record', choice($.primary_expression, $.block)),
'.',
optional(
seq(
Expand Down Expand Up @@ -1051,7 +1119,7 @@ export default grammar({
for_expression: ($) =>
seq(
'for',
$.value_identifier,
field('pattern', $._pattern),
'in',
$.expression,
choice('to', 'downto'),
Expand Down Expand Up @@ -1106,23 +1174,35 @@ export default grammar({
),

coercion_expression: ($) =>
prec.left(
'coercion_relation',
choice(
choice(
prec.left(
'coercion_relation',
seq(
field('left', $.expression),
field('operator', ':>'),
field('right', $._type),
),
seq(
'(',
field('left', $.expression),
field('source_type', $.type_annotation),
field('operator', ':>'),
field('right', $._type),
')',
),
prec.dynamic(
1,
prec.left(
'coercion_relation',
seq(
'(',
field('left', $.expression),
field('source_type', $.type_annotation),
field('operator', ':>'),
field('right', $._type),
')',
),
),
),
seq(
field('left', $.primary_expression),
field('source_type', $.type_annotation),
field('operator', ':>'),
field('right', $._type),
),
),

unary_expression: ($) =>
Expand Down Expand Up @@ -1152,7 +1232,33 @@ export default grammar({
),

_extension_expression_payload: ($) =>
seq('(', choice($._one_or_more_statements, $.type_annotation), ')'),
seq(
'(',
choice(
$._one_or_more_statements,
$.type_annotation,
seq(
':',
repeat(seq($.let_declaration, $._semicolon)),
$.let_declaration,
optional($._semicolon),
),
),
')',
),

tagged_template: ($) =>
prec(
'call',
seq(
choice(
$.value_identifier,
$.value_identifier_path,
$.member_expression,
),
$.template_string,
),
),

variant: ($) =>
prec.right(
Expand Down Expand Up @@ -1242,15 +1348,27 @@ export default grammar({
),

constrain_type: ($) =>
seq('type', $._type, choice('=', ':='), optional('private'), $._type),
seq(
'type',
$._type,
choice('=', ':='),
optional('private'),
$._type,
repeat($.type_constraint),
),

functor_use: ($) =>
seq($.module_primary_expression, alias($.functor_arguments, $.arguments)),

functor_arguments: ($) =>
seq('(', optional(commaSep1t($._functor_argument)), ')'),

_functor_argument: ($) => choice($.module_expression, $.block),
_functor_argument: ($) =>
choice(
seq($.module_expression, optional($.module_type_annotation)),
$.block,
$.unit,
),

variant_identifier: ($) => /[A-Z][a-zA-Z0-9_']*/,

Expand All @@ -1264,7 +1382,12 @@ export default grammar({
),

type_identifier: ($) =>
choice($._identifier, /'[a-zA-Z0-9_']*/, $._escape_identifier),
choice(
$._identifier,
/'[a-zA-Z0-9_']*/,
seq('\u0027', $._escape_identifier),
$._escape_identifier,
),

_identifier: (_) => /[a-z_][a-zA-Z0-9_']*/,

Expand Down
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