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I relaxed the extension to the grammar that enabled non-annotated

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empty lists and None values as initial values in declarations.

Now, these values are accepted irrespective of the declared type. It
is up to the typechecker to validate them.
This commit is contained in:
Christian Rinderknecht 2019-03-19 11:54:23 +01:00
parent d994592a1b
commit c3b304db4a
No known key found for this signature in database
GPG Key ID: 9446816CFD267040
2 changed files with 13 additions and 49 deletions
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58
Parser.mly
View File

@ -368,42 +368,21 @@ const_decl:
}
var_decl:
Var var COLON var_decl_type_expr ASS expr option(SEMI) {
let stop =
match $7 with
Some region -> region
| None -> expr_to_region $6 in
Var var COLON type_expr ASS extended_expr option(SEMI) {
let stop = match $7 with
Some region -> region
| None -> $6.region in
let region = cover $1 stop in
let value = {
kwd_var = $1;
name = $2;
colon = $3;
var_type = $4;
assign = $5;
init = $6;
terminator = $7}
in {region; value}
}
| Var var COLON type_name type_tuple
ASS extended_expr option(SEMI) {
let region = cover $4.region $5.region in
let type_app = TypeApp {region; value=$4,$5} in
let cartesian = {region; value = type_app, []} in
let var_type = Prod cartesian in
let stop = match $8 with
Some region -> region
| None -> $7.region in
let region = cover $1 stop in
let init =
match $7.value with
match $6.value with
`Expr e -> e
| `EList (lbracket, rbracket) ->
let region = $7.region
let region = $6.region
and value = {
lbracket;
rbracket;
colon = Region.ghost;
list_type = var_type} in
list_type = $4} in
let value = {
lpar = Region.ghost;
inside = value;
@ -415,17 +394,17 @@ var_decl:
inside = {
c_None = region;
colon = Region.ghost;
opt_type = var_type};
opt_type = $4};
rpar = Region.ghost}
in ConstrExpr (NoneExpr {region; value}) in
let value = {
kwd_var = $1;
name = $2;
colon = $3;
var_type;
assign = $6;
var_type = $4;
assign = $5;
init;
terminator = $8}
terminator = $7}
in {region; value}
}
@ -436,21 +415,6 @@ extended_expr:
value = `EList ($1,$2)} }
| C_None { {region = $1; value = `ENone $1} }
var_decl_type_expr:
var_decl_cartesian { Prod $1 }
| sum_type { Sum $1 }
| record_type { Record $1 }
var_decl_cartesian:
nsepseq(var_decl_core_type,TIMES) {
let region = nsepseq_to_region type_expr_to_region $1
in {region; value=$1}
}
var_decl_core_type:
type_name { TAlias $1 }
| par(type_expr) { ParType $1 }
instruction:
single_instr { Single $1 }
| block { Block $1 }

4
Tests/crowdfunding.ligo
View File

@ -15,7 +15,7 @@ entrypoint contribute (storage store : state;
if now > store.deadline then
fail "Deadline passed"
else
match store.backers[sender] with
case store.backers[sender] of
None ->
store :=
copy store with
@ -50,7 +50,7 @@ entrypoint claim (storage store : state; const sender : address)
if now <= store.deadline then
fail "Too soon"
else
match store.backers[sender] with
case store.backers[sender] of
None ->
fail "Not a backer"
| Some (amount) ->