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Get rid of unit in AST

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This commit is contained in:
Ulf Norell 2019-04-26 13:35:35 +02:00
parent 272c247b4d
commit 88139fe99c
4 changed files with 1 additions and 7 deletions
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2
src/aeso_ast_infer_types.erl
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@ -938,8 +938,6 @@ infer_expr(Env, Id = {Tag, As, _}) when Tag == id; Tag == qid ->
infer_expr(Env, Id = {Tag, As, _}) when Tag == con; Tag == qcon ->
{QName, Type} = lookup_name(Env, As, Id, [freshen]),
{typed, As, QName, Type};
infer_expr(Env, {unit, As}) ->
infer_expr(Env, {tuple, As, []});
infer_expr(Env, {tuple, As, Cpts}) ->
NewCpts = [infer_expr(Env, C) || C <- Cpts],
CptTypes = [T || {typed, _, _, T} <- NewCpts],

4
src/aeso_parser.erl
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@ -441,7 +441,7 @@ build_if(Ann, Cond, Then, [{elif, Ann1, Cond1, Then1} | Elses]) ->
build_if(Ann, Cond, Then, [{else, _Ann, Else}]) ->
{'if', Ann, Cond, Then, Else};
build_if(Ann, Cond, Then, []) ->
{'if', Ann, Cond, Then, {unit, [{origin, system}]}}.
{'if', Ann, Cond, Then, {tuple, [{origin, system}], []}}.
else_branches([Elif = {elif, _, _, _} | Stmts], Acc) ->
else_branches(Stmts, [Elif | Acc]);
@ -457,7 +457,6 @@ fun_t(Domains, Type) ->
lists:foldr(fun({Dom, Ann}, T) -> {fun_t, Ann, [], Dom, T} end,
Type, Domains).
tuple_e(Ann, []) -> {unit, Ann};
tuple_e(_Ann, [Expr]) -> Expr; %% Not a tuple
tuple_e(Ann, Exprs) -> {tuple, Ann, Exprs}.
@ -478,7 +477,6 @@ parse_pattern({record, Ann, Fs}) ->
{record, Ann, lists:map(fun parse_field_pattern/1, Fs)};
parse_pattern(E = {con, _, _}) -> E;
parse_pattern(E = {id, _, _}) -> E;
parse_pattern(E = {unit, _}) -> E;
parse_pattern(E = {int, _, _}) -> E;
parse_pattern(E = {bool, _, _}) -> E;
parse_pattern(E = {bytes, _, _}) -> E;

1
src/aeso_pretty.erl
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@ -332,7 +332,6 @@ expr_p(_, {Type, _, Bin})
Type == oracle_pubkey;
Type == oracle_query_id ->
text(binary_to_list(aeser_api_encoder:encode(Type, Bin)));
expr_p(_, {unit, _}) -> text("()");
expr_p(_, {string, _, S}) -> term(binary_to_list(S));
expr_p(_, {char, _, C}) ->
case C of

1
src/aeso_syntax.erl
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@ -75,7 +75,6 @@
| {contract_pubkey, binary()}
| {oracle_pubkey, binary()}
| {oracle_query_id, binary()}
| {unit, ann()}
| {string, ann(), binary()}
| {char, ann(), integer()}.