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why3
Commit e66e2a3f authored by Andrei Paskevich's avatar Andrei Paskevich
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WhyML: admit terminating semi-colons when there is no ambiguity 

Examples:

  begin ... expr; end

  let fn x y = ... expr ; in ...

  match ... with pat -> ... expr ; | pat -> ... expr ; end

In this way, it's much easier to add and remove additional
assertions at the end of ()-typed blocks.
parent 0931fc96
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Inline Side-by-side
Showing with 67 additions and 36 deletions
src/parser/parser.mly
View file @ e66e2a3f
......@@ -563,14 +563,18 @@ primitive_type_arg:
{ PPTtyvar ($1, false) }
| opaque_quote_lident
{ PPTtyvar ($1, true) }
| LEFTPAR primitive_type COMMA list1_primitive_type_sep_comma RIGHTPAR
{ PPTtuple ($2 :: $4) }
| LEFTPAR list2_primitive_type_sep_comma RIGHTPAR
{ PPTtuple $2 }
| LEFTPAR RIGHTPAR
{ PPTtuple [] }
| LEFTPAR primitive_type RIGHTPAR
{ PPTparen $2 }
;
list2_primitive_type_sep_comma:
| primitive_type COMMA list1_primitive_type_sep_comma { $1 :: $3 }
;
list1_primitive_type_sep_comma:
| primitive_type { [$1] }
| primitive_type COMMA list1_primitive_type_sep_comma { $1 :: $3 }
......@@ -626,8 +630,8 @@ lexpr:
| _ -> mk_pp (PPmatch ($4, [$2, $6])) }
| MATCH lexpr WITH bar_ match_cases END
{ mk_pp (PPmatch ($2, $5)) }
| MATCH lexpr COMMA list1_lexpr_sep_comma WITH bar_ match_cases END
{ mk_pp (PPmatch (mk_pp (PPtuple ($2::$4)), $7)) }
| MATCH list2_lexpr_sep_comma WITH bar_ match_cases END
{ mk_pp (PPmatch (mk_pp (PPtuple $2), $5)) }
| lexpr COLON primitive_type
{ mk_pp (PPcast ($1, $3)) }
| lexpr_arg
......@@ -682,8 +686,8 @@ lexpr_sub:
{ $2 }
| LEFTPAR RIGHTPAR
{ mk_pp (PPtuple []) }
| LEFTPAR lexpr COMMA list1_lexpr_sep_comma RIGHTPAR
{ mk_pp (PPtuple ($2 :: $4)) }
| LEFTPAR list2_lexpr_sep_comma RIGHTPAR
{ mk_pp (PPtuple $2) }
| LEFTBRC list1_field_value opt_semicolon RIGHTBRC
{ mk_pp (PPrecord (List.rev $2)) }
| LEFTBRC lexpr_arg WITH list1_field_value opt_semicolon RIGHTBRC
......@@ -716,6 +720,10 @@ trigger:
| list1_lexpr_sep_comma { $1 }
;
list2_lexpr_sep_comma:
| lexpr COMMA list1_lexpr_sep_comma { $1 :: $3 }
;
list1_lexpr_sep_comma:
| lexpr { [$1] }
| lexpr COMMA list1_lexpr_sep_comma { $1 :: $3 }
......@@ -1130,16 +1138,30 @@ list1_rec_defn:
| rec_defn WITH list1_rec_defn { $1 :: $3 }
;
inner_list1_rec_defn:
| inner_rec_defn { [ $1 ] }
| inner_rec_defn WITH inner_list1_rec_defn { $1 :: $3 }
rec_defn:
| top_ghost lident_rich labels list1_binder opt_cast spec EQUAL spec expr
{ add_lab $2 $3, $1, ($4, $5, $9, spec_union $6 $8) }
;
inner_rec_defn:
| top_ghost lident_rich labels list1_binder opt_cast spec EQUAL spec final_expr
{ add_lab $2 $3, $1, ($4, $5, $9, spec_union $6 $8) }
;
fun_defn:
| list1_binder opt_cast spec EQUAL spec expr
{ ($1, $2, $6, spec_union $3 $5) }
;
inner_fun_defn:
| list1_binder opt_cast spec EQUAL spec final_expr
{ ($1, $2, $6, spec_union $3 $5) }
;
fun_expr:
| FUN list1_binder spec ARROW spec expr %prec prec_fun
{ ($2, None, $6, spec_union $3 $5) }
......@@ -1176,9 +1198,9 @@ expr:
{ mk_expr (Eidapp ($1, $2)) }
| expr_arg_noid list1_expr_arg
{ List.fold_left mk_apply $1 $2 }
| IF expr THEN expr ELSE expr
| IF final_expr THEN expr ELSE expr
{ mk_expr (Eif ($2, $4, $6)) }
| IF expr THEN expr %prec prec_no_else
| IF final_expr THEN expr %prec prec_no_else
{ mk_expr (Eif ($2, $4, mk_expr (Etuple []))) }
| expr SEMICOLON expr
{ mk_expr (Esequence ($1, $3)) }
......@@ -1188,53 +1210,54 @@ expr:
{ mk_expr (Elazy (LazyAnd, $1, $3)) }
| expr BARBAR expr
{ mk_expr (Elazy (LazyOr, $1, $3)) }
| LET pattern EQUAL expr IN expr
| LET pattern EQUAL final_expr IN expr
{ match $2.pat_desc with
| PPpvar id -> mk_expr (Elet (id, Gnone, $4, $6))
| PPpwild -> mk_expr (Elet (id_anonymous (), Gnone, $4, $6))
| PPptuple [] -> mk_expr (Elet (id_anonymous (), Gnone,
{ $4 with expr_desc = Ecast ($4, PPTtuple []) }, $6))
| _ -> mk_expr (Ematch ($4, [$2, $6])) }
| LET GHOST pat_arg EQUAL expr IN expr
| LET GHOST pat_arg EQUAL final_expr IN expr
{ match $3.pat_desc with
| PPpvar id -> mk_expr (Elet (id, Gghost, $5, $7))
| PPpwild -> mk_expr (Elet (id_anonymous (), Gghost, $5, $7))
| PPptuple [] -> mk_expr (Elet (id_anonymous (), Gghost,
{ $5 with expr_desc = Ecast ($5, PPTtuple []) }, $7))
| _ -> mk_expr (Ematch ({ $5 with expr_desc = Eghost $5 }, [$3, $7])) }
| LET lident labels fun_defn IN expr
| LET lident labels inner_fun_defn IN expr
{ mk_expr (Efun (add_lab $2 $3, Gnone, $4, $6)) }
| LET lident_op_id labels fun_defn IN expr
| LET lident_op_id labels inner_fun_defn IN expr
{ mk_expr (Efun (add_lab $2 $3, Gnone, $4, $6)) }
| LET GHOST lident labels fun_defn IN expr
| LET GHOST lident labels inner_fun_defn IN expr
{ mk_expr (Efun (add_lab $3 $4, Gghost, $5, $7)) }
| LET GHOST lident_op_id labels fun_defn IN expr
| LET GHOST lident_op_id labels inner_fun_defn IN expr
{ mk_expr (Efun (add_lab $3 $4, Gghost, $5, $7)) }
| LET lident_op_id labels EQUAL expr IN expr
| LET lident_op_id labels EQUAL final_expr IN expr
{ mk_expr (Elet (add_lab $2 $3, Gnone, $5, $7)) }
| LET GHOST lident_op_id labels EQUAL expr IN expr
| LET GHOST lident_op_id labels EQUAL final_expr IN expr
{ mk_expr (Elet (add_lab $3 $4, Gghost, $6, $8)) }
| LET LEMMA lident_rich labels EQUAL expr IN expr
| LET LEMMA lident_rich labels EQUAL final_expr IN expr
{ mk_expr (Elet (add_lab $3 $4, Glemma, $6, $8)) }
| LET LEMMA lident_rich labels fun_defn IN expr
| LET LEMMA lident_rich labels inner_fun_defn IN expr
{ mk_expr (Efun (add_lab $3 $4, Glemma, $5, $7)) }
| LET REC list1_rec_defn IN expr
| LET REC inner_list1_rec_defn IN expr
{ mk_expr (Erec ($3, $5)) }
| fun_expr
{ mk_expr (Elam $1) }
| VAL top_ghost lident_rich labels tail_type_c IN expr
{ mk_expr (Elet (add_lab $3 $4, $2, mk_expr_i 5 (Eany $5), $7)) }
| MATCH expr WITH bar_ program_match_cases END
| MATCH final_expr WITH bar_ program_match_cases END
{ mk_expr (Ematch ($2, $5)) }
| MATCH expr COMMA list1_expr_sep_comma WITH bar_ program_match_cases END
{ mk_expr (Ematch (mk_expr (Etuple ($2::$4)), $7)) }
| MATCH list2_expr_sep_comma WITH bar_ program_match_cases END
{ mk_expr (Ematch (mk_expr (Etuple $2), $5)) }
| quote_uident COLON expr %prec prec_mark
{ mk_expr (Emark ($1, $3)) }
| LOOP loop_annotation expr END
| LOOP loop_annotation final_expr END
{ mk_expr (Eloop ($2, $3)) }
| WHILE expr DO loop_annotation expr DONE
| WHILE final_expr DO loop_annotation final_expr DONE
{ mk_expr (Ewhile ($2, $4, $5)) }
| FOR lident EQUAL expr for_direction expr DO for_loop_invariant expr DONE
| FOR lident EQUAL final_expr for_direction final_expr
DO for_loop_invariant final_expr DONE
{ mk_expr (Efor ($2, $4, $5, $6, $8, $9)) }
| ABSURD
{ mk_expr Eabsurd }
......@@ -1242,9 +1265,9 @@ expr:
{ mk_expr (Ecast ($1, $3)) }
| RAISE uqualid
{ mk_expr (Eraise ($2, None)) }
| RAISE LEFTPAR uqualid expr RIGHTPAR
| RAISE LEFTPAR uqualid final_expr RIGHTPAR
{ mk_expr (Eraise ($3, Some $4)) }
| TRY expr WITH bar_ list1_handler_sep_bar END
| TRY final_expr WITH bar_ list1_handler_sep_bar END
{ mk_expr (Etry ($2, $5)) }
| ANY simple_type_c
{ mk_expr (Eany $2) }
......@@ -1256,6 +1279,10 @@ expr:
{ mk_expr (Enamed ($1, $2)) }
;
final_expr:
| expr opt_semicolon { $1 }
;
expr_arg:
| qualid { mk_expr (Eident $1) }
| expr_arg_noid { $1 }
......@@ -1278,14 +1305,14 @@ expr_dot:
expr_sub:
| expr_dot DOT lqualid_rich
{ mk_expr (Eidapp ($3, [$1])) }
| LEFTPAR expr RIGHTPAR
| LEFTPAR final_expr RIGHTPAR
{ $2 }
| BEGIN expr END
| BEGIN final_expr END
{ $2 }
| LEFTPAR RIGHTPAR
{ mk_expr (Etuple []) }
| LEFTPAR expr COMMA list1_expr_sep_comma RIGHTPAR
{ mk_expr (Etuple ($2 :: $4)) }
| LEFTPAR list2_expr_sep_comma RIGHTPAR
{ mk_expr (Etuple $2) }
| LEFTBRC list1_field_expr opt_semicolon RIGHTBRC
{ mk_expr (Erecord (List.rev $2)) }
| LEFTBRC expr_arg WITH list1_field_expr opt_semicolon RIGHTBRC
......@@ -1312,9 +1339,13 @@ list1_expr_arg:
| expr_arg list1_expr_arg { $1 :: $2 }
;
list2_expr_sep_comma:
| final_expr COMMA list1_expr_sep_comma { $1 :: $3 }
;
list1_expr_sep_comma:
| expr { [$1] }
| expr COMMA list1_expr_sep_comma { $1 :: $3 }
| final_expr { [$1] }
| final_expr COMMA list1_expr_sep_comma { $1 :: $3 }
;
list1_handler_sep_bar:
......@@ -1323,9 +1354,9 @@ list1_handler_sep_bar:
;
handler:
| uqualid ARROW expr
| uqualid ARROW final_expr
{ ($1, None, $3) }
| uqualid pat_arg ARROW expr
| uqualid pat_arg ARROW final_expr
{ ($1, Some $2, $4) }
;
......@@ -1335,7 +1366,7 @@ program_match_cases:
;
program_match_case:
| pattern ARROW expr { ($1,$3) }
| pattern ARROW final_expr { ($1,$3) }
;
assertion_kind:
......
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