*/
/* This grammar defines the NIT language. */
+Package org.nitlanguage.gen;
/*****************************************************************************/
Helpers
cr = 13;
lf = 10;
any = [all - [cr + lf]];
+eol_helper = cr lf | cr | lf; // This takes care of different platforms
// characers inside strings and super-strings (atomaton powaa)
str_char
;
str_body = str_char*;
-eol_helper = cr lf | cr | lf; // This takes care of different platforms
+sstr_char
+ = [any - [''' + '\']]
+ | '\' any
+ ;
+
+sstr_body = sstr_char*;
+
+long_str_char = str_char | cr | lf;
+
+long_str_part
+ = long_str_char
+ | '"' long_str_char
+ | '"' '"' long_str_char
+ | '{' long_str_char
+ | '{' '{' long_str_char
+ ;
+
+long_str_body = long_str_part*;
+
+long_sstr_char = sstr_char | cr | lf;
+long_sstr_part
+ = long_sstr_char
+ | ''' long_sstr_char
+ | ''' ''' long_sstr_char
+ ;
+
+long_sstr_body = long_sstr_part*;
+
+
+extern_code_char
+ = [all - ['`' + '\']]
+ | '\' all
+ ;
+extern_code_body = extern_code_char*;
/*****************************************************************************/
States
kwabstract = 'abstract';
kwinterface = 'interface';
kwenum = 'universal'|'enum';
-kwspecial = 'special';
kwend = 'end';
kwmeth = 'fun';
kwtype = 'type';
kwnullable = 'nullable';
kwisset = 'isset';
kwlabel = 'label';
+kwdebug = '__debug__';
opar = '(';
cpar = ')';
number = digit+;
float = digit* '.' digit+;
+string = '"' str_body '"' | '"' '"' '"' long_str_body '"' '"' '"' | ''' ''' ''' long_sstr_body ''' ''' ''';
+start_string = '"' str_body '{' | '"' '"' '"' long_str_body '{' '{' '{';
+mid_string = '}' str_body '{' | '}' '}' '}' long_str_body '{' '{' '{';
+end_string = '}' str_body '"' | '}' '}' '}' long_str_body '"' '"' '"';
char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
-string = '"' str_body '"';
-start_string = '"' str_body '{';
-mid_string = '}' str_body '{';
-end_string = '}' str_body '"';
+bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
bad_char = ''' '\'? any;
-bad_string = ('"'|'}') str_body;
+extern_code_segment = '`' '{' extern_code_body '`' '}';
/*****************************************************************************/
Ignored Tokens
/* MODULES *******************************************************************/
module
- = moduledecl? [imports]:import* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(moduledecl, [imports.import],[classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])};
+ = moduledecl? [imports]:import* [extern_bodies]:extern_code_body* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(moduledecl, [imports.import], [extern_bodies.extern_code_block], [classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])};
moduledecl
= [doc]:no kwmodule no module_name [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, module_name)};
/* CLASSES *******************************************************************/
classdef
- = [doc]:no redef visibility classkind no classid formaldefs? [specials]:special* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], [specials.superclass], [propdefs.propdef], kwend)};
+ = [doc]:no redef visibility classkind no classid formaldefs? extern_code_block? [superclasses]:superclass* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], extern_code_block, [superclasses.superclass], [propdefs.propdef], kwend)};
redef {-> kwredef?}
= kwredef? {-> kwredef};
classkind
| {abstract} kwabstract kwclass
| {interface} kwinterface
| {enum} kwenum
- | {extern} kwextern
+ | {extern} kwextern kwclass?
;
formaldefs {-> formaldef*}
formaldef
= classid typing? {-> New formaldef(classid, typing.type)};
-special {-> superclass}
- = {special} no kwspecial [n2]:no type {-> New superclass(kwspecial, Null, type)}
- | {super} no kwsuper [n2]:no type {-> New superclass(Null, kwsuper, type)}
+superclass {-> superclass}
+ = {super} no kwsuper [n2]:no type {-> New superclass(kwsuper, type)}
;
propdefs~toplevel {-> propdef}
| {assign_return} [doc]:no redef visibility kwmeth methid signature_withret assign no assign_return {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature_withret.signature, assign_return.expr)}
!toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
!toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
- | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? extern_calls? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string, extern_calls)}
+ | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? extern_calls? extern_code_block? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string, extern_calls, extern_code_block)}
+ | {extern_implicit} [doc]:no redef visibility kwmeth methid signature extern_calls? extern_code_block {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, Null, extern_calls, extern_code_block)}
!toplevel| {var} [doc]:no readable? writable? redef visibility kwvar attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwvar, attrid, Null, typing.type, Null)}
!toplevel| {var2} [doc]:no readable? writable? redef visibility kwvar attrid typing? assign [n2]:no expr {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwvar, attrid, Null, typing.type, expr)}
!toplevel| {var3} [doc]:no redef visibility kwvar id typing? writable2? {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, Null)}
!toplevel| {var4} [doc]:no redef visibility kwvar id typing? writable2? assign [n2]:no expr {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, expr)}
!toplevel| {init} [doc]:no redef visibility kwinit methid? signature kwdo stmtso kwend? {-> New propdef.concrete_init(doc.doc, redef.kwredef, visibility, kwinit, methid, signature, stmtso.expr)}
!toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
-!toplevel| {extern_init} [doc]:no redef visibility kwnew methid? signature kwis kwextern string? extern_calls? {-> New propdef.extern_init(doc.doc, redef.kwredef, visibility, kwnew, methid, signature, string, extern_calls)}
+!toplevel| {extern_init} [doc]:no redef visibility kwnew methid? signature kwis kwextern string? extern_calls? extern_code_block? {-> New propdef.extern_init(doc.doc, redef.kwredef, visibility, kwnew, methid, signature, string, extern_calls, extern_code_block)}
+!toplevel| {extern_init_implicit} [doc]:no redef visibility kwnew methid? signature string? extern_calls? extern_code_block {-> New propdef.extern_init(doc.doc, redef.kwredef, visibility, kwnew, methid, signature, string, extern_calls, extern_code_block)}
;
readable {-> able}
= redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
| {as_not_nullable} type kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
;
+in_language = kwin string;
+extern_code_block = in_language? extern_code_segment;
+extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
/* TYPES *********************************************************************/
type~nobra {-> type}
| {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, args_nopar.exprs, [closure_defs~withelse.closure_def])}
| {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, args_nopar.exprs)}
| {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
+ | {debug_type_is} kwdebug kwtype type column expr_final~withelse {-> New expr.debug_type(kwdebug, kwtype, expr_final~withelse.expr, type) }
;
label= kwlabel id;
expr_and~nopar~nobra {-> expr}
= expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
- | {or} expr_and~nopar~nobra kwor no expr_not~nopar~nobra {-> New expr.or(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
- | {and} expr_and~nopar~nobra kwand no expr_not~nopar~nobra {-> New expr.and(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
- | {or_else} expr_and~nopar~nobra kwor kwelse no expr_not~nopar~nobra {-> New expr.or_else(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
+ | {:or} expr_and~nopar~nobra :kwor :no expr_not~nopar~nobra
+ | {:and} expr_and~nopar~nobra :kwand :no expr_not~nopar~nobra
+ | {:or_else} expr_and~nopar~nobra :kwor :kwelse :no expr_not~nopar~nobra
;
expr_not~nopar~nobra {-> expr}
expr_eq~nopar~nobra {-> expr}
= expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
- | {eq} expr_add~nopar~nobra eq no [expr2]:expr_add~nopar~nobra {-> New expr.eq(expr_add~nopar~nobra.expr, expr2.expr)}
- | {ee} expr_add~nopar~nobra kwis no [expr2]:expr_add~nopar~nobra {-> New expr.ee(expr_add~nopar~nobra.expr, expr2.expr)}
- | {ne} expr_add~nopar~nobra ne no [expr2]:expr_add~nopar~nobra {-> New expr.ne(expr_add~nopar~nobra.expr, expr2.expr)}
- | {lt} expr_add~nopar~nobra lt no [expr2]:expr_add~nopar~nobra {-> New expr.lt(expr_add~nopar~nobra.expr, expr2.expr)}
- | {le} expr_add~nopar~nobra le no [expr2]:expr_add~nopar~nobra {-> New expr.le(expr_add~nopar~nobra.expr, expr2.expr)}
- | {ll} expr_eq~nopar~nobra ll no [expr2]:expr_add~nopar~nobra {-> New expr.ll(expr_eq~nopar~nobra.expr, expr2.expr)}
- | {gt} expr_add~nopar~nobra gt no [expr2]:expr_add~nopar~nobra {-> New expr.gt(expr_add~nopar~nobra.expr, expr2.expr)}
- | {ge} expr_add~nopar~nobra ge no [expr2]:expr_add~nopar~nobra {-> New expr.ge(expr_add~nopar~nobra.expr, expr2.expr)}
- | {gg} expr_eq~nopar~nobra gg no [expr2]:expr_add~nopar~nobra {-> New expr.gg(expr_eq~nopar~nobra.expr, expr2.expr)}
- | {starship} expr_add~nopar~nobra starship no [expr2]:expr_add~nopar~nobra {-> New expr.starship(expr_add~nopar~nobra.expr, expr2.expr)}
- | {isa} expr_add~nopar~nobra kwisa no type~nobra {-> New expr.isa(expr_add~nopar~nobra.expr, type~nobra.type)}
+ | {:eq} expr_add~nopar~nobra :eq :no [expr2]:expr_add~nopar~nobra
+ | {:ee} expr_add~nopar~nobra :kwis :no [expr2]:expr_add~nopar~nobra
+ | {:ne} expr_add~nopar~nobra :ne :no [expr2]:expr_add~nopar~nobra
+ | {:lt} expr_add~nopar~nobra :lt :no [expr2]:expr_add~nopar~nobra
+ | {:le} expr_add~nopar~nobra :le :no [expr2]:expr_add~nopar~nobra
+ | {:ll} expr_eq~nopar~nobra :ll :no [expr2]:expr_add~nopar~nobra
+ | {:gt} expr_add~nopar~nobra :gt :no [expr2]:expr_add~nopar~nobra
+ | {:ge} expr_add~nopar~nobra :ge :no [expr2]:expr_add~nopar~nobra
+ | {:gg} expr_eq~nopar~nobra :gg :no [expr2]:expr_add~nopar~nobra
+ | {:starship} expr_add~nopar~nobra :starship :no [expr2]:expr_add~nopar~nobra
+ | {:isa} expr_add~nopar~nobra :kwisa :no type~nobra
;
expr_add~nopar~nobra {-> expr}
= expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
- | {plus} expr_add~nopar~nobra plus no [expr2]:expr_mul~nopar~nobra {-> New expr.plus(expr_add~nopar~nobra.expr, expr2.expr)}
- | {minus} expr_add~nopar~nobra minus no [expr2]:expr_mul~nopar~nobra {-> New expr.minus(expr_add~nopar~nobra.expr, expr2.expr)}
+ | {:plus} expr_add~nopar~nobra :plus :no [expr2]:expr_mul~nopar~nobra
+ | {:minus} expr_add~nopar~nobra :minus :no [expr2]:expr_mul~nopar~nobra
;
expr_mul~nopar~nobra {-> expr}
= expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
- | {star} expr_mul~nopar~nobra star no [expr2]:expr_minus~nopar~nobra {-> New expr.star(expr_mul~nopar~nobra.expr, expr2.expr)}
- | {slash} expr_mul~nopar~nobra slash no [expr2]:expr_minus~nopar~nobra {-> New expr.slash(expr_mul~nopar~nobra.expr, expr2.expr)}
- | {percent} expr_mul~nopar~nobra percent no [expr2]:expr_minus~nopar~nobra {-> New expr.percent(expr_mul~nopar~nobra.expr, expr2.expr)}
+ | {:star} expr_mul~nopar~nobra :star :no [expr2]:expr_minus~nopar~nobra
+ | {:slash} expr_mul~nopar~nobra :slash :no [expr2]:expr_minus~nopar~nobra
+ | {:percent} expr_mul~nopar~nobra :percent :no [expr2]:expr_minus~nopar~nobra
;
expr_minus~nopar~nobra {-> expr}
= expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
- | {minus} minus no expr_minus~nopar~nobra {-> New expr.uminus(minus, expr_minus~nopar~nobra.expr)}
- | {once} kwonce no expr_minus~nopar~nobra {-> New expr.once(kwonce, expr_minus~nopar~nobra.expr)}
+ | {:uminus} minus :no expr_minus~nopar~nobra
+ | {:once} kwonce :no expr_minus~nopar~nobra
;
expr_new~nopar~nobra {-> expr}
!nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(obra, expr, expr2.expr, cbra)}
!nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(obra, expr, expr2.expr, cbra)}
!nobra!nopar | {array} braargs {-> New expr.array(braargs.exprs)}
- | {self} kwself {-> New expr.self(kwself)}
- | {true} kwtrue {-> New expr.true(kwtrue)}
- | {false} kwfalse {-> New expr.false(kwfalse)}
- | {null} kwnull {-> New expr.null(kwnull)}
- | {int} number {-> New expr.int(number)}
- | {float} float {-> New expr.float(float)}
- | {char} char {-> New expr.char(char)}
- | {string} string {-> New expr.string(string)}
+ | {:self} kwself
+ | {:true} kwtrue
+ | {:false} kwfalse
+ | {:null} kwnull
+ | {:int} number
+ | {:float} float
+ | {:char} char
+ | {:string} string
| {superstring} superstring {-> superstring.expr}
!nopar | {par} opar expr cpar {-> New expr.par(opar, expr, cpar)}
| {as_cast} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no type [n4]:no cpar {-> New expr.as_cast(expr_atom~nopar~nobra.expr, kwas, opar, type, cpar)}
Abstract Syntax Tree
/*****************************************************************************/
-module = moduledecl? [imports]:import* [classdefs]:classdef*;
+module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
moduledecl
= doc? kwmodule [name]:module_name;
| {intrude} kwintrude
;
-classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef* kwend
+classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* extern_code_block? [superclasses]:superclass* [propdefs]:propdef* kwend
| {top} [propdefs]:propdef*
| {main} [propdefs]:propdef*
;
| {abstract} kwabstract kwclass
| {interface} kwinterface
| {enum} kwenum
- | {extern} kwextern
+ | {extern} kwextern kwclass?
;
formaldef = [id]:classid type?;
-superclass = kwspecial? kwsuper? type;
+superclass = kwsuper type;
propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? expr?
- | {meth} doc? kwredef? visibility methid signature
- | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
- | {intern_meth} doc? kwredef? visibility kwmeth methid signature
- | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls?
+ | {meth} doc? kwredef? visibility methid signature
+ | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
+ | {intern_meth} doc? kwredef? visibility kwmeth methid signature
+ | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls? extern_code_block?
| {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
| {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
- | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls?
+ | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls? extern_code_block?
| {main_meth} kwredef? [block]:expr?
| {type} doc? kwredef? visibility kwtype [id]:classid type
;
| {as_cast} expr kwas opar type cpar
| {as_notnull} expr kwas opar kwnot kwnull cpar
| {isset_attr} kwisset expr [id]:attrid
+ | {debug_type} kwdebug kwtype expr type
;
exprs
= {list} [exprs]:expr*
| {as_nullable} type kwas kwnullable
| {as_not_nullable} type kwas kwnot kwnullable
;
+in_language = kwin string;
+extern_code_block = in_language? extern_code_segment;
qualified = id* classid? ;
nitlanguage / nit.git / blobdiff