syntax: add call reference (funref+recv capture) `&x.foo`

[nit.git] / src / parser / nit.sablecc3xx

diff --git a/src/parser/nit.sablecc3xx b/src/parser/nit.sablecc3xx
index 33fa750..8e8bce4 100644 (file)
--- a/src/parser/nit.sablecc3xx
+++ b/src/parser/nit.sablecc3xx
@@ -204,6 +204,7 @@ ge = '>=';
 gg = '>>';
 starship = '<=>';
 bang='!';
+quest='?';
 at='@';
 semi=';';
 
@@ -218,10 +219,12 @@ start_string = id? '"' str_body '{' | id? '"' '"' '"' long_str_body lsend2;
 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body lsend2;
 end_string = '}' str_body '"' id? | '}' '}' '}' long_str_body lsend1 id? ;
 char = id? ((''' [[any - '''] - '\'] ''') | (''' '\' any ''')) id?;
-bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
+bad_string = ('"'|'}') str_body ;
+bad_t_string = '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
 bad_char = ''' '\'? any;
 
 extern_code_segment = '`' '{' extern_code_body '`' '}';
+bad_extern = '`' '{' extern_code_body;
 
 /*****************************************************************************/
 Ignored Tokens
@@ -298,17 +301,18 @@ propdefn {-> propdef}
        = propdef n1 {-> propdef.propdef}
        ;
 propdef~toplevel {-> propdef}
-       = {meth} [doc]:nd redef visibility kwmeth qmethid signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
-       | {nobody} [doc]:nd redef visibility kwmeth qmethid signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature.signature, annotation_withend_nonull.annotations, Null, Null, Null, Null, Null)}
-!toplevel| {intern_new} [doc]:nd redef visibility kwnew qmethid? signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_withend_nonull.annotations, Null, Null, Null, Null, Null)}
-!toplevel| {new} [doc]:nd redef visibility kwnew qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
-       | {extern_implicit} [doc]:nd redef visibility kwmeth qmethid signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature.signature, annotation_noend.annotations, extern_calls, extern_code_block, Null, Null, Null)}
+       = {meth} [doc]:nd redef visibility kwmeth qmethid signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
+       | {nobody} [doc]:nd redef visibility kwmeth qmethid signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, Null, qmethid.methid, signature.signature, annotation_withend_nonull.annotations, Null, Null, Null, Null, Null)}
+!toplevel| {isa} [doc]:nd redef visibility kwisa annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwisa, Null, Null, New signature(Null, [], Null, Null), annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
+!toplevel| {intern_new} [doc]:nd redef visibility kwnew qmethid? signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, Null, kwnew, qmethid.methid, signature, annotation_withend_nonull.annotations, Null, Null, Null, Null, Null)}
+!toplevel| {new} [doc]:nd redef visibility kwnew qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
+       | {extern_implicit} [doc]:nd redef visibility kwmeth qmethid signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, Null, qmethid.methid, signature.signature, annotation_noend.annotations, extern_calls, extern_code_block, Null, Null, Null)}
 !toplevel| {var3} [doc]:nd redef visibility kwvar id typing_o annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, Null, annotation_withend.annotations, Null, Null, Null)}
 !toplevel| {var4} [doc]:nd redef visibility kwvar id typing_o assign [n2]:no expr annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, assign, expr.expr, annotation_withend.annotations, Null, Null, Null)}
 !toplevel| {var5} [doc]:nd redef visibility kwvar id typing_o annotation_noend? kwdo stmtso kwend? {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, Null, annotation_noend.annotations, kwdo, stmtso.expr, kwend)}
-!toplevel| {init} [doc]:nd redef visibility kwinit qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, kwinit, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
+!toplevel| {init} [doc]:nd redef visibility kwinit qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, kwinit, Null, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
 !toplevel| {type} [doc]:nd redef visibility kwtype qclassid typing annotation_withend {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, qclassid, typing.type, annotation_withend.annotations)}
-!toplevel| {extern_init_implicit} [doc]:nd redef visibility kwnew qmethid? signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, extern_calls, extern_code_block, Null, Null, Null)}
+!toplevel| {extern_init_implicit} [doc]:nd redef visibility kwnew qmethid? signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, extern_calls, extern_code_block, Null, Null, Null)}
 !toplevel| {annot} line_annotation_forclass {-> line_annotation_forclass.propdef}
 !toplevel| {super} superclass {-> superclass.propdef}
        ;
@@ -635,6 +639,7 @@ expr_new~nopar~nobra {-> expr}
        = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
        | {new} kwnew no type_atom~nobra_nopar args {-> New expr.new(kwnew, type_atom~nobra_nopar.type, Null, args.exprs)}
        | {isset_attr} kwisset recv~nopar~nobra qualified_o attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
+       | {callref} amp recv~nopar~nobra qid args {-> New expr.callref(amp, recv~nopar~nobra.expr, qid, args.exprs)}
        ;
 
 expr_atom~nopar~nobra {-> expr}
@@ -789,6 +794,7 @@ atid~forclass {-> atid}
 
 recv~nopar~nobra {-> expr}
        = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
+       | {safe} expr_atom~nopar~nobra quest dot no {-> New expr.safe(expr_atom~nopar~nobra.expr, quest)}
        | {implicit} {-> New expr.implicit_self()}
        ;
 
@@ -918,7 +924,7 @@ formaldef = [id]:classid type? annotations?;
 propdef = {attr} doc? kwredef? visibility kwvar [id2]:id type? assign? expr? annotations? kwdo? [block]:expr? kwend?
        | {main_meth} kwredef? [block]:expr?
        | {type} doc? kwredef? visibility kwtype [qid]:qclassid type annotations?
-       | {meth} doc? kwredef? visibility kwmeth? kwinit? kwnew? methid? signature annotations? extern_calls? extern_code_block? kwdo? [block]:expr? kwend?
+       | {meth} doc? kwredef? visibility kwmeth? kwinit? kwisa? kwnew? methid? signature annotations? extern_calls? extern_code_block? kwdo? [block]:expr? kwend?
        | {super} doc? kwredef? visibility kwsuper type annotations?
        | {annot} doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?
        ;
@@ -1016,6 +1022,7 @@ expr      = {block} expr* kwend?
        | {attr_assign} expr [id]:attrid assign [value]:expr
        | {attr_reassign} expr [id]:attrid assign_op [value]:expr
        | {call} expr qid [args]:exprs
+       | {callref} amp expr qid [args]:exprs
        | {call_assign} expr qid [args]:exprs assign [value]:expr
        | {call_reassign} expr qid [args]:exprs assign_op [value]:expr
        | {super} qualified? kwsuper [args]:exprs
@@ -1050,6 +1057,7 @@ expr      = {block} expr* kwend?
        | {debug_type} kwdebug kwtype expr type
        | {vararg} expr dotdotdot
        | {namedarg} id assign expr
+       | {safe} expr quest
        | {type} type
        | {methid} expr [id]:methid
        | {at} annotations