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tree-sitter-haskel.ebnf
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tree-sitter-haskel.ebnf
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/*
Grammar originally from https://github.com/tree-sitter/tree-sitter-haskell
Converted by excuting:
qjs json2ebnf.js
Then manualy fixing the problems reported by https://www.bottlecaps.de/rr/ui in a way to allow visualization (correctnes is not the priority now)
*/
haskell ::= ( empty_file | _module | ( ( _topdecl ( ( ( ( ';' | _layout_semicolon ) ) _topdecl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )
_topdecl ::= ( ( decl_type ) | ( decl_tyfam ) | ( decl_tyinst ) | ( decl_role ) | ( decl_adt ) | ( decl_newtype ) | ( decl_datafam ) | ( decl_datainst ) | ( decl_import ) | ( decl_class ) | ( decl_instance ) | ( decl_default ) | _decl_foreign | ( decl_deriving ) | _decl | ( decl_pattern ) | top_splice )
float ::= ( ( ( [0-9][0-9_]* ( ( '.'[0-9_]+ ( [eE][+-]?[0-9_]+ )? ) | [eE][+-]?[0-9_]+ ) ) ( ( '##'? ) )? ) )
char ::= ( ( ( "'"[^']"'" | "'\\"[^ ]*"'" ) ( ( '##'? ) )? ) )
string ::= ( ( ( '"' ( ( [^\\"\n] | "\\"('\\'^)?. | "\\\n\s"*"\\" ) )* '"' ) ( ( '##'? ) )? ) )
_integer_literal ::= ( ( [0-9][0-9_]* ( ( '##'? ) )? ) )
_binary_literal ::= ( ( '0'[bB][01_]+ ( ( '##'? ) )? ) )
_octal_literal ::= ( ( '0'[oO][0-7]+ ( ( '##'? ) )? ) )
_hex_literal ::= ( ( '0'[xX][0-9a-fA-F_]+ ( ( '##'? ) )? ) )
integer ::= ( _binary_literal | _integer_literal | _octal_literal | _hex_literal )
_stringly ::= ( string | char )
_number ::= ( integer | float )
_literal ::= ( _stringly | _number )
pragma ::= ( ( '{-#' ( ( [^#] | '#'[^-] | '#-'[^}] ) )* '#-}' ) )
_varid ::= [_a-z]([\w]|"'")*'#'?
label ::= '#'[_a-z]([\w]|"'")*
variable ::= _varid
qualified_variable ::= ( _qualifying_module variable )
_qvarid ::= ( qualified_variable | variable )
operator ::= _varsym
_minus ::= ( '-' )
_operator_minus ::= ( operator | _minus )
qualified_operator ::= ( _qualifying_module _operator_minus )
_qvarsym ::= ( qualified_operator | _operator_minus )
_qvarsym_nominus ::= ( qualified_operator | operator )
_var ::= ( variable | ( '(' _operator_minus ')' ) )
_qvar ::= ( _qvarid | ( '(' _qvarsym ')' ) )
varop ::= ( _operator_minus | ( '`' variable '`' ) )
_qvarop ::= ( _qvarsym | ( '`' _qvarid '`' ) )
_qvarop_nominus ::= ( _qvarsym_nominus | ( '`' _qvarid '`' ) )
implicit_parid ::= '?'[_a-z]([\w]|"'")*
_conid ::= [A-Z]([\w]|"'")*'#'?
constructor ::= _conid
qualified_constructor ::= ( _qualifying_module constructor )
_qconid ::= ( qualified_constructor | constructor )
constructor_operator ::= _consym
qualified_constructor_operator ::= ( _qualifying_module constructor_operator )
_qconsym ::= ( qualified_constructor_operator | constructor_operator )
_con ::= ( constructor | ( '(' constructor_operator ')' ) )
_qcon ::= ( _qconid | ( '(' _qconsym ')' ) )
_conop ::= ( constructor_operator | ( '`' constructor '`' ) )
_qconop ::= ( _qconsym | ( '`' _qconid '`' ) )
_op ::= ( varop | _conop )
_qop ::= ( _qvarop | _qconop )
_qop_nominus ::= ( _qvarop_nominus | _qconop )
_gcon_literal ::= ( con_unit | con_list | con_tuple )
literal ::= ( _literal | _gcon_literal )
_gcon ::= ( _qcon | _gcon_literal )
_tyconid ::= ( constructor )
qualified_type ::= ( _qualifying_module _tyconid )
_qtyconid ::= ( qualified_type | _tyconid )
_type_operator ::= ( ( _tyconsym ) | constructor_operator )
qualified_type_operator ::= ( _qualifying_module ( _tyconsym ) )
_qualified_type_operator ::= ( qualified_type_operator | qualified_constructor_operator )
_qtyconsym ::= ( _qualified_type_operator | _type_operator )
_ticked_tycon ::= ( '`' _tyconid '`' )
_simple_tyconop ::= ( ( _ticked_tycon ) | _type_operator )
_simple_tycon ::= ( _tyconid | ( '(' _type_operator ')' ) )
_ticked_qtycon ::= ( '`' _qtyconid '`' )
_qtyconops ::= ( ( _ticked_qtycon ) | _qtyconsym )
_promoted_tyconop ::= ( "'" _qtyconops )
_qtyconop ::= ( ( _promoted_tyconop ) | _qtyconops )
con_unit ::= ( ( '(' ')' ) )
con_list ::= ( '[' ']' )
tycon_arrow ::= ( '(' '->' ')' )
con_tuple ::= ( '(' ( comma )+ ')' )
type_literal ::= ( _literal | con_unit | con_list | con_tuple )
_qtycon ::= ( _qtyconid | ( '(' _qtyconsym ')' ) )
_promoted_tycon ::= ( "'" _qtycon )
_gtycon ::= ( ( _promoted_tycon ) | _qtycon | tycon_arrow )
_name ::= ( _var | _con )
_qname ::= ( _qvar | _qcon )
type_variable ::= _varid
annotated_type_variable ::= ( '(' type_variable _type_annotation ')' )
_tyvar ::= ( annotated_type_variable | type_variable )
_forall_kw ::= ( 'forall' | '∀' )
_forall_dot ::= ( '.' | '->' )
_forall ::= ( _forall_kw ( _tyvar )+ )
_quantifiers ::= ( ( _forall ) _forall_dot )
forall ::= _quantifiers
type_parens ::= ( '(' _type_or_implicit ')' )
type_list ::= ( '[' ( _type_or_implicit ( ( comma _type_or_implicit ) )* ) ']' )
_type_tuple ::= ( _type_or_implicit ( ( comma _type_or_implicit ) )+ )
type_tuple ::= ( '(' _type_tuple ')' )
_type_promotable_literal ::= ( type_literal | type_tuple | type_list )
_type_promoted_literal ::= ( "'" _type_promotable_literal )
_type_literal ::= ( ( _type_promoted_literal ) | _type_promotable_literal )
strict_type ::= ( _strict _atype )
type_name ::= ( _tyvar | _gtycon )
type_star ::= '*'
type_unboxed_tuple ::= ( '(# ' _type_tuple _unboxed_tuple_close )
_atype ::= ( type_name | type_star | _type_literal | type_parens | type_unboxed_tuple | splice | quasiquote )
type_apply ::= ( _atype ( _atype )+ )
_btype ::= ( _atype | type_apply )
implicit_param ::= ( implicit_parid _type_annotation )
type_infix ::= ( ( _btype ) ( _qtyconop ) ( _type_infix ) )
_type_infix ::= ( type_infix | _btype )
constraint ::= ( ( ( ( type_name ) ) ( _atype )* ) | type_infix )
_quantified_constraint ::= ( _quantifiers _constraint )
_constraint_context ::= ( _context _constraint )
_constraint ::= ( ( _quantified_constraint ) | ( _constraint_context ) | ( '(' _constraint ')' ) | constraint )
_context_constraints ::= ( ( constraint | ( ( '(' ( ( ( _constraint | implicit_param ) ( ( comma ( _constraint | implicit_param ) ) )* ) )? ')' ) ) ) )
_context ::= ( _context_constraints '=>' )
context ::= _context
_type_quantifiers ::= ( _quantifiers _type )
_type_context ::= ( _context _type )
_type_fun ::= ( ( _type_infix '->' _type ) )
_type ::= ( ( ( _type_quantifiers ) | ( _type_context ) | ( _type_fun ) | _type_infix ) )
_type_or_implicit ::= ( implicit_param | _type )
_type_annotation ::= ( '::' ( _type_or_implicit ) )
_simpletype_infix ::= ( _tyvar ( _simple_tyconop ) _tyvar )
_simpletype ::= ( ( '(' _simpletype ')' ) | ( _simpletype_infix ) | ( ( _simple_tycon ) ( _tyvar )* ) )
decl_type ::= ( 'type' _simpletype '=' _type_or_implicit )
decl_type_sig ::= ( 'type' ( 'family' )? _simpletype _type_annotation )
tyfam_head ::= _simpletype
_tyfam_pat_prefix ::= ( ( _qtyconid ) ( _atype )* )
_tyfam_pat_infix ::= ( _atype ( _qtyconop ) _atype )
tyfam_pat ::= ( _tyfam_pat_prefix | _tyfam_pat_infix )
tyfam_eq ::= ( ( tyfam_pat ) '=' _type_or_implicit )
decl_tyfam ::= ( 'type' 'family' ( tyfam_head ) ( _type_annotation )? ( ( where ( ( ( '{' ( ( ( tyfam_eq ) ( ( ';' ( tyfam_eq ) ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( ( tyfam_eq ) ( ( ( ( ';' | _layout_semicolon ) ) ( tyfam_eq ) ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )? ) )? )
decl_tyinst ::= ( 'type' 'instance' ( _atype )* '=' _type_or_implicit )
type_role ::= ( 'representational' | 'nominal' | 'phantom' | '_' )
decl_role ::= ( 'type' 'role' _qtycon ( type_role )+ )
exp_parens ::= ( '(' _exp ')' )
_tuple ::= ( ( ( ( comma )+ _exp ) | ( _exp comma ( _exp )? ) ) ( ( comma ( _exp )? ) )* )
exp_tuple ::= ( '(' _tuple ')' )
exp_unboxed_tuple ::= ( '(# ' _tuple _unboxed_tuple_close )
exp_list ::= ( '[' ( _exp ( ( comma _exp ) )* ) ']' )
bind_pattern ::= ( _typed_pat '<-' _exp )
exp_arithmetic_sequence ::= ( '[' ( _exp ) ( ( comma ( _exp ) ) )? '..' ( ( _exp ) )? ']' )
qual ::= ( bind_pattern | let | _exp )
exp_list_comprehension ::= ( '[' _exp '|' ( qual ( ( comma qual ) )* ) ']' )
exp_section_left ::= ( '(' _exp_infix _qop ')' )
exp_section_right ::= ( '(' _qop_nominus _exp_infix ')' )
exp_th_quoted_name ::= ( ( "'" ( _qvar | _qcon ) ) | ( "''" _atype ) )
exp_field ::= ( ( '..' ) | ( _qvar ( ( '=' _exp ) )? ) )
exp_type_application ::= ( '@' _atype )
exp_lambda ::= ( '\\' ( _apat )+ '->' _exp )
exp_in ::= ( 'in' _exp )
let ::= ( 'let' ( decls )? )
_let_decls ::= ( ( '{' ( ( _decl ( ( ';' _decl ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( _decl ( ( ( ( ';' | _layout_semicolon ) ) _decl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? ) )
exp_let ::= ( 'let' ( ( _let_decls ) )? )
exp_let_in ::= ( exp_let exp_in )
exp_cond ::= ( 'if' ( _exp ) ( ';' )? 'then' ( _exp ) ( ';' )? 'else' ( _exp ) )
exp_if_guard ::= ( 'if' ( ( gdpat )+ ) )
pattern_guard ::= ( _pat '<-' _exp_infix )
guard ::= ( pattern_guard | let | _exp_infix )
guards ::= ( '|' ( guard ( ( comma guard ) )* ) )
gdpat ::= ( guards '->' _exp )
_alt_variants ::= ( ( '->' _exp ) | ( gdpat )+ )
alt ::= ( _pat _alt_variants ( ( where ( decls )? ) )? )
alts ::= ( ( '{' ( ( alt ( ( ';' alt ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( alt ( ( ( ( ';' | _layout_semicolon ) ) alt ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) )
exp_case ::= ( 'case' _exp 'of' alts )
exp_lambda_case ::= ( ( '\\' 'case' ( alts )? ) )
rec ::= ( 'rec' ( ( '{' ( ( stmt ( ( ';' stmt ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( stmt ( ( ( ( ';' | _layout_semicolon ) ) stmt ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )
stmt ::= ( _exp | bind_pattern | let | rec )
_do_keyword ::= ( 'mdo' | 'do' )
do_module ::= ( _qualifying_module _do_keyword )
exp_do ::= ( ( do_module | _do_keyword ) ( ( '{' ( ( stmt ( ( ';' stmt ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( stmt ( ( ( ( ';' | _layout_semicolon ) ) stmt ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )
exp_negation ::= ( '-' _aexp )
exp_record ::= ( _aexp ( '{' ( exp_field ( ( comma exp_field ) )* ) '}' ) )
exp_name ::= ( _qvar | _qcon | implicit_parid | label )
_aexp ::= ( exp_name | exp_parens | exp_tuple | exp_list | exp_th_quoted_name | exp_type_application | exp_lambda_case | exp_do | exp_record | exp_arithmetic_sequence | exp_list_comprehension | exp_section_left | exp_section_right | exp_unboxed_tuple | splice | quasiquote | ( literal ) )
_exp_apply ::= ( _aexp | ( _aexp _exp_apply ) | ( _aexp exp_lambda ) | ( _aexp exp_let_in ) | ( _aexp exp_cond ) | ( _aexp exp_case ) )
_fexp ::= ( _aexp | ( _exp_apply ) )
_lexp ::= ( exp_let_in | exp_cond | exp_if_guard | exp_case | exp_negation | _fexp | exp_lambda )
exp_infix ::= ( _exp_infix _qop _lexp )
_exp_infix ::= ( exp_infix | _lexp )
_exp ::= ( ( _exp_infix ( _type_annotation )? ) )
pat_field ::= ( ( '..' ) | ( _qvar ( ( '=' _nested_pat ) )? ) )
pat_fields ::= ( '{' ( ( pat_field ( ( comma pat_field ) )* ) )? '}' )
pat_as ::= ( ( variable ) ( '@' ) ( _apat ) )
pat_parens ::= ( '(' _nested_pat ')' )
pat_view ::= ( _exp '->' _nested_pat )
pat_tuple ::= ( '(' ( _nested_pat ( ( comma _nested_pat ) )+ ) ')' )
pat_unboxed_tuple ::= ( '(# ' ( _nested_pat ( ( comma _nested_pat ) )* ) _unboxed_tuple_close )
pat_list ::= ( '[' ( _nested_pat ( ( comma _nested_pat ) )* ) ']' )
pat_strict ::= ( _strict _apat )
pat_irrefutable ::= ( '~' _apat )
pat_negation ::= ( '-' _number )
pat_name ::= _var
_pat_constructor ::= ( _qcon )
pat_wildcard ::= '_'
pat_record ::= ( ( _pat_constructor ) ( pat_fields ) )
_apat ::= ( pat_name | pat_as | _pat_constructor | pat_record | ( literal ) | pat_wildcard | pat_parens | pat_tuple | pat_unboxed_tuple | pat_list | pat_strict | pat_irrefutable | splice | quasiquote )
pat_apply ::= ( _pat_constructor ( _apat )+ )
_lpat ::= ( _apat | pat_negation | pat_apply )
pat_infix ::= ( _lpat _qconop _pat )
_pat ::= ( ( pat_infix ) | ( _lpat ) )
pat_typed ::= ( ( _pat ) _type_annotation )
_typed_pat ::= ( _pat | pat_typed )
_nested_pat ::= ( _typed_pat | pat_view )
_import_name ::= ( _con | _var )
namespace ::= ( 'pattern' | 'type' )
import_con_names ::= ( '(' ( ( ( '..' ) | ( _import_name ( ( comma _import_name ) )* ) ) )? ')' )
import_item ::= ( ( namespace )? ( _var | ( _simple_tycon ( import_con_names )? ) ) )
import_list ::= ( ( 'hiding' )? ( '(' ( ( ( import_item ( ( comma import_item ) )* ) ( comma )? ) )? ')' ) )
decl_import ::= ( 'import' ( 'qualified' )? ( ( string ) )? _qmodid ( 'qualified' )? ( ( 'as' _qmodid ) )? ( import_list )? )
_modid ::= ( constructor )
_qualifying_module ::= ( ( _modid _dot ) )+
qualified_module ::= ( _qualifying_module _modid )
_qmodid ::= ( qualified_module | _modid )
export_names ::= ( '(' ( ( ( '..' ) | ( ( _name ( ( comma _name ) )* ) )? ) )? ')' )
export ::= ( _qvar | ( ( namespace )? _qtycon ( export_names )? ) | ( 'module' ( _qmodid ) ) )
exports ::= ( '(' ( ( export ( ( comma export ) )* ) )? ( comma )? ')' )
_module ::= ( 'module' ( _qmodid ) ( exports )? ( where ( ( ( '{' ( ( _topdecl ( ( ';' _topdecl ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( _topdecl ( ( ( ( ';' | _layout_semicolon ) ) _topdecl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )? ) )
field ::= ( ( variable ( ( comma variable ) )* ) '::' ( strict_type | _type ) )
data_constructor ::= ( constructor ( ( strict_type | _atype ) )* )
data_constructor_infix ::= ( ( strict_type | _type_infix ) _conop ( strict_type | _type_infix ) )
_record_field ::= ( '{' field '}' )
record_fields ::= ( '{' ( field ( ( comma field ) )* ) '}' )
data_constructor_record ::= ( constructor record_fields )
constructors ::= ( ( ( forall )? ( context )? ( data_constructor | data_constructor_infix | data_constructor_record ) ) ( ( '|' ( ( forall )? ( context )? ( data_constructor | data_constructor_infix | data_constructor_record ) ) ) )* )
via ::= ( 'via' _atype )
deriving_strategy ::= ( 'stock' | 'newtype' | 'anyclass' )
deriving ::= ( 'deriving' ( deriving_strategy )? ( ( _qtyconid ) | ( '(' ( ( ( _constraint ) ( ( comma ( _constraint ) ) )* ) )? ')' ) ) ( via )? )
_adt_rhs ::= ( '=' constructors ( deriving )* )
_gadt_fun ::= ( ( strict_type | _type_infix ) '->' _gadt_sig )
_gadt_sig ::= ( ( _gadt_fun ) | ( strict_type | _type_infix ) )
_gadt_constr_type ::= ( '::' ( forall )? ( context )? ( _gadt_sig | ( record_fields '->' _gadt_sig ) ) )
gadt_constructor ::= ( _con _gadt_constr_type )
_gadt_rhs ::= ( where ( ( ( '{' ( ( ( gadt_constructor | deriving ) ( ( ';' ( gadt_constructor | deriving ) ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( ( gadt_constructor | deriving ) ( ( ( ( ';' | _layout_semicolon ) ) ( gadt_constructor | deriving ) ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )? )
_adt ::= ( ( _adt_rhs | _gadt_rhs ) )
decl_adt ::= ( 'data' ( context )? _simpletype ( _type_annotation )? ( _adt )? )
newtype_constructor ::= ( constructor ( _atype | _record_field ) )
_newtype ::= ( '=' newtype_constructor ( deriving )* )
_context_newtype ::= ( ( context _simpletype ) | _simpletype )
decl_newtype ::= ( 'newtype' _context_newtype ( _newtype | _gadt_rhs ) )
decl_datafam ::= ( 'data' 'family' _simpletype ( _type_annotation )? )
_datainst ::= ( ( forall )? ( context )? _type_infix ( _type_annotation )? )
decl_datainst ::= ( ( 'data' 'instance' _datainst ( _adt )? ) | ( 'newtype' 'instance' _datainst _newtype ) )
default_signature ::= ( 'default' signature )
class_datafam ::= ( 'data' ( 'family' )? _simpletype ( _type_annotation )? )
_cdecl ::= ( _gendecl | default_signature | function | decl_type_sig | decl_type | ( class_datafam ) )
fundep ::= ( ( type_variable )+ '->' ( type_variable )+ )
fundeps ::= ( '|' ( fundep ( ( comma fundep ) )* ) )
class_body ::= ( where ( ( ( '{' ( ( _cdecl ( ( ';' _cdecl ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( _cdecl ( ( ( ( ';' | _layout_semicolon ) ) _cdecl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )? )
decl_class ::= ( 'class' ( context )? ( constraint ) ( fundeps )? ( class_body )? )
inst_datainst ::= ( ( 'data' ( 'instance' )? _datainst ( _adt )? ) | ( 'newtype' ( 'instance' )? _datainst _newtype ) )
inst_tyinst ::= ( 'type' ( 'instance' )? ( _atype )* '=' _type )
_idecl ::= ( function | signature | inst_datainst | inst_tyinst )
_instance ::= ( 'instance' ( forall )? ( context )? ( constraint ) )
decl_instance ::= ( _instance ( ( where ( ( ( '{' ( ( _idecl ( ( ';' _idecl ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( _idecl ( ( ( ( ';' | _layout_semicolon ) ) _idecl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) )? ) )? )
decl_deriving ::= ( 'deriving' ( ( deriving_strategy | via ) )? _instance )
_funpat_infix ::= ( ( _pat ) ( varop ) ( _pat ) )
_funpat ::= ( ( _typed_pat ) _funrhs )
_fun_name ::= ( ( _var | implicit_parid ) )
guard_equation ::= ( guards '=' _exp )
_fun_guards ::= ( guard_equation )+
_funrhs ::= ( ( ( '=' ( _exp ) ) | _fun_guards ) ( ( where ( decls )? ) )? )
_fun_patterns ::= ( _apat )+
_funvar ::= ( _fun_name ( ( ( _fun_patterns ) )? ) )
_funlhs ::= ( ( _funvar ) | ( ( ( _funpat_infix ) ) ) )
function ::= ( _funlhs _funrhs )
fixity ::= ( ( 'infixl' | 'infixr' | 'infix' ) ( integer )? ( _op ( ( comma _op ) )* ) )
signature ::= ( ( ( ( _var ) ( ( comma ( _var ) ) )* ) ) ( _type_annotation ) )
_gendecl ::= ( signature | fixity )
_decl_fun ::= ( function | ( ( _funpat ) ) )
_decl ::= ( _gendecl | _decl_fun )
decls ::= ( ( '{' ( ( _decl ( ( ';' _decl ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( _decl ( ( ( ( ';' | _layout_semicolon ) ) _decl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) )
calling_convention ::= ( 'ccall' | 'stdcall' | 'cplusplus' | 'jvm' | 'dotnet' )
safety ::= ( 'unsafe' | 'safe' )
impent ::= string
expent ::= string
_foreign_pre ::= ( calling_convention ( safety )? )
decl_foreign_import ::= ( 'foreign' 'import' _foreign_pre ( impent )? signature )
decl_foreign_export ::= ( 'foreign' 'export' _foreign_pre ( expent )? signature )
_decl_foreign ::= ( ( decl_foreign_import ) | ( decl_foreign_export ) )
_pattern_type ::= ( _con _type_annotation )
_pattern_equals ::= ( ( _pat ) '=' ( _pat ) )
_pattern_decl ::= ( _pat _funrhs )
_pattern_arrow ::= ( ( _pat ) '<-' ( _pat ) ( ( where ( ( '{' ( ( _pattern_decl ( ( ';' _pattern_decl ) )* ) )? ( ';' )? '}' ) | ( _layout_start ( ( ( _pattern_decl ( ( ( ( ';' | _layout_semicolon ) ) _pattern_decl ) )* ) ( ( ';' | _layout_semicolon ) )? ) )? _layout_end ) ) ) )? )
decl_pattern ::= ( 'pattern' ( ( _pattern_type ) | ( _pattern_equals ) | ( _pattern_arrow ) ) )
decl_default ::= ( 'default' ( '(' ( ( _type_infix ( ( comma _type_infix ) )* ) )? ')' ) )
_splice_exp ::= ( exp_name | exp_parens )
splice ::= ( _splice_dollar _splice_exp )
top_splice ::= _exp_infix
quasiquote_body ::= ( ( ( [^|] | '\\'|[^#x5d] ) )+ )
quasiquote ::= ( _qq_start ( ( _varid ) )? '|' ( quasiquote_body )? ( '|]' ) )