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-rw-r--r--lib/syntax_tools/src/Makefile2
-rw-r--r--lib/syntax_tools/src/epp_dodger.erl36
-rw-r--r--lib/syntax_tools/src/erl_comment_scan.erl2
-rw-r--r--lib/syntax_tools/src/erl_prettypr.erl20
-rw-r--r--lib/syntax_tools/src/erl_syntax.erl58
-rw-r--r--lib/syntax_tools/src/erl_syntax_lib.erl2
-rw-r--r--lib/syntax_tools/src/merl_transform.erl2
7 files changed, 103 insertions, 19 deletions
diff --git a/lib/syntax_tools/src/Makefile b/lib/syntax_tools/src/Makefile
index 8325db45a8..c21d2f49c8 100644
--- a/lib/syntax_tools/src/Makefile
+++ b/lib/syntax_tools/src/Makefile
@@ -75,7 +75,7 @@ $(EBIN)/%.$(EMULATOR):%.erl
# special rules and dependencies to apply the transform to itself
$(EBIN)/merl_transform.beam: $(EBIN)/merl.beam ./merl_transform.beam \
- ../include/merl.hrl \
+ ../include/merl.hrl $(EBIN)/erl_comment_scan.beam \
$(EBIN)/erl_syntax.beam $(EBIN)/erl_syntax_lib.beam
./merl_transform.beam: ./merl_transform.erl $(EBIN)/merl.beam \
../include/merl.hrl
diff --git a/lib/syntax_tools/src/epp_dodger.erl b/lib/syntax_tools/src/epp_dodger.erl
index 0a12e8fd8b..7e741cc649 100644
--- a/lib/syntax_tools/src/epp_dodger.erl
+++ b/lib/syntax_tools/src/epp_dodger.erl
@@ -502,6 +502,10 @@ quickscan_form([{'-', _L}, {atom, La, ifdef} | _Ts]) ->
kill_form(La);
quickscan_form([{'-', _L}, {atom, La, ifndef} | _Ts]) ->
kill_form(La);
+quickscan_form([{'-', _L}, {'if', La} | _Ts]) ->
+ kill_form(La);
+quickscan_form([{'-', _L}, {atom, La, elif} | _Ts]) ->
+ kill_form(La);
quickscan_form([{'-', _L}, {atom, La, else} | _Ts]) ->
kill_form(La);
quickscan_form([{'-', _L}, {atom, La, endif} | _Ts]) ->
@@ -615,8 +619,13 @@ filter_form(T) ->
%% ---------------------------------------------------------------------
%% Normal parsing - try to preserve all information
-normal_parser(Ts, Opt) ->
- rewrite_form(parse_tokens(scan_form(Ts, Opt))).
+normal_parser(Ts0, Opt) ->
+ case scan_form(Ts0, Opt) of
+ Ts when is_list(Ts) ->
+ rewrite_form(parse_tokens(Ts));
+ Node ->
+ Node
+ end.
scan_form([{'-', _L}, {atom, La, define} | Ts], Opt) ->
[{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La},
@@ -636,12 +645,26 @@ scan_form([{'-', _L}, {atom, La, ifdef} | Ts], Opt) ->
scan_form([{'-', _L}, {atom, La, ifndef} | Ts], Opt) ->
[{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La},
{atom, La, ifndef} | scan_macros(Ts, Opt)];
+scan_form([{'-', _L}, {'if', La} | Ts], Opt) ->
+ [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La},
+ {atom, La, 'if'} | scan_macros(Ts, Opt)];
+scan_form([{'-', _L}, {atom, La, elif} | Ts], Opt) ->
+ [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La},
+ {atom, La, 'elif'} | scan_macros(Ts, Opt)];
scan_form([{'-', _L}, {atom, La, else} | Ts], Opt) ->
[{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La},
{atom, La, else} | scan_macros(Ts, Opt)];
scan_form([{'-', _L}, {atom, La, endif} | Ts], Opt) ->
[{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La},
{atom, La, endif} | scan_macros(Ts, Opt)];
+scan_form([{'-', _L}, {atom, La, error} | Ts], _Opt) ->
+ Desc = build_info_string("-error", Ts),
+ ErrorInfo = {La, ?MODULE, {error, Desc}},
+ erl_syntax:error_marker(ErrorInfo);
+scan_form([{'-', _L}, {atom, La, warning} | Ts], _Opt) ->
+ Desc = build_info_string("-warning", Ts),
+ ErrorInfo = {La, ?MODULE, {warning, Desc}},
+ erl_syntax:error_marker(ErrorInfo);
scan_form([{'-', L}, {'?', L1}, {Type, _, _}=N | [{'(', _} | _]=Ts], Opt)
when Type =:= atom; Type =:= var ->
%% minus, macro and open parenthesis at start of form - assume that
@@ -657,6 +680,11 @@ scan_form([{'?', L}, {Type, _, _}=N | [{'(', _} | _]=Ts], Opt)
scan_form(Ts, Opt) ->
scan_macros(Ts, Opt).
+build_info_string(Prefix, Ts0) ->
+ Ts = lists:droplast(Ts0),
+ String = lists:droplast(tokens_to_string(Ts)),
+ Prefix ++ " " ++ String ++ ".".
+
scan_macros(Ts, Opt) ->
scan_macros(Ts, [], Opt).
@@ -865,6 +893,10 @@ tokens_to_string([]) ->
format_error(macro_args) ->
errormsg("macro call missing end parenthesis");
+format_error({error, Error}) ->
+ Error;
+format_error({warning, Error}) ->
+ Error;
format_error({unknown, Reason}) ->
errormsg(io_lib:format("unknown error: ~tP", [Reason, 15])).
diff --git a/lib/syntax_tools/src/erl_comment_scan.erl b/lib/syntax_tools/src/erl_comment_scan.erl
index 07e501e553..e3eb95b819 100644
--- a/lib/syntax_tools/src/erl_comment_scan.erl
+++ b/lib/syntax_tools/src/erl_comment_scan.erl
@@ -208,7 +208,7 @@ scan_comment([], Cs1, L, Col, M, Ack) ->
seen_comment(Cs, Cs1, L, Col, M, Ack) ->
%% Compute indentation and strip trailing spaces
N = Col - M,
- Text = lists:reverse(string:strip(Cs1, left)),
+ Text = lists:reverse(string:trim(Cs1, leading)),
Ack1 = [{L, Col + 1, N, Text} | Ack],
scan_lines(Cs, L + 1, 0, 0, Ack1).
diff --git a/lib/syntax_tools/src/erl_prettypr.erl b/lib/syntax_tools/src/erl_prettypr.erl
index 40ddd2b22a..6906ef1553 100644
--- a/lib/syntax_tools/src/erl_prettypr.erl
+++ b/lib/syntax_tools/src/erl_prettypr.erl
@@ -675,7 +675,12 @@ lay_2(Node, Ctxt) ->
%% attribute name, without following parentheses.
Ctxt1 = reset_prec(Ctxt),
Args = erl_syntax:attribute_arguments(Node),
- N = erl_syntax:attribute_name(Node),
+ N = case erl_syntax:attribute_name(Node) of
+ {atom, _, 'if'} ->
+ erl_syntax:variable('if');
+ N0 ->
+ N0
+ end,
D = case attribute_type(Node) of
spec ->
[SpecTuple] = Args,
@@ -774,9 +779,16 @@ lay_2(Node, Ctxt) ->
class_qualifier ->
Ctxt1 = set_prec(Ctxt, max_prec()),
D1 = lay(erl_syntax:class_qualifier_argument(Node), Ctxt1),
- D2 = lay(erl_syntax:class_qualifier_body(Node), Ctxt1),
- beside(D1, beside(text(":"), D2));
-
+ D2 = lay(erl_syntax:class_qualifier_body(Node), Ctxt1),
+ Stacktrace = erl_syntax:class_qualifier_stacktrace(Node),
+ case erl_syntax:variable_name(Stacktrace) of
+ '_' ->
+ beside(D1, beside(text(":"), D2));
+ _ ->
+ D3 = lay(Stacktrace, Ctxt1),
+ beside(D1, beside(beside(text(":"), D2),
+ beside(text(":"), D3)))
+ end;
comment ->
D = stack_comment_lines(
erl_syntax:comment_text(Node)),
diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl
index 9b2b503762..029f1e88ac 100644
--- a/lib/syntax_tools/src/erl_syntax.erl
+++ b/lib/syntax_tools/src/erl_syntax.erl
@@ -342,8 +342,10 @@
typed_record_field_body/1,
typed_record_field_type/1,
class_qualifier/2,
+ class_qualifier/3,
class_qualifier_argument/1,
class_qualifier_body/1,
+ class_qualifier_stacktrace/1,
tuple/1,
tuple_elements/1,
tuple_size/1,
@@ -3884,7 +3886,7 @@ fold_try_clause({clause, Pos, [P], Guard, Body}) ->
class_qualifier ->
{tuple, Pos, [class_qualifier_argument(P),
class_qualifier_body(P),
- {var, Pos, '_'}]};
+ class_qualifier_stacktrace(P)]};
_ ->
{tuple, Pos, [{atom, Pos, throw}, P, {var, Pos, '_'}]}
end,
@@ -3893,12 +3895,14 @@ fold_try_clause({clause, Pos, [P], Guard, Body}) ->
unfold_try_clauses(Cs) ->
[unfold_try_clause(C) || C <- Cs].
-unfold_try_clause({clause, Pos, [{tuple, _, [{atom, _, throw}, V, _]}],
+unfold_try_clause({clause, Pos, [{tuple, _, [{atom, _, throw},
+ V,
+ [{var, _, '_'}]]}],
Guard, Body}) ->
{clause, Pos, [V], Guard, Body};
-unfold_try_clause({clause, Pos, [{tuple, _, [C, V, _]}],
+unfold_try_clause({clause, Pos, [{tuple, _, [C, V, Stacktrace]}],
Guard, Body}) ->
- {clause, Pos, [class_qualifier(C, V)], Guard, Body}.
+ {clause, Pos, [class_qualifier(C, V, Stacktrace)], Guard, Body}.
%% =====================================================================
@@ -5324,7 +5328,7 @@ revert_map_type_assoc(Node) ->
Pos = get_pos(Node),
Name = map_type_assoc_name(Node),
Value = map_type_assoc_value(Node),
- {type, Pos, map_type_assoc, [Name, Value]}.
+ {type, Pos, map_field_assoc, [Name, Value]}.
%% =====================================================================
@@ -5382,7 +5386,7 @@ revert_map_type_exact(Node) ->
Pos = get_pos(Node),
Name = map_type_exact_name(Node),
Value = map_type_exact_value(Node),
- {type, Pos, map_type_exact, [Name, Value]}.
+ {type, Pos, map_field_exact, [Name, Value]}.
%% =====================================================================
@@ -6725,9 +6729,12 @@ try_expr_after(Node) ->
%%
%% @see class_qualifier_argument/1
%% @see class_qualifier_body/1
+%% @see class_qualifier_stacktrace/1
%% @see try_expr/4
--record(class_qualifier, {class :: syntaxTree(), body :: syntaxTree()}).
+-record(class_qualifier, {class :: syntaxTree(),
+ body :: syntaxTree(),
+ stacktrace :: syntaxTree()}).
%% type(Node) = class_qualifier
%% data(Node) = #class_qualifier{class :: Class, body :: Body}
@@ -6737,8 +6744,27 @@ try_expr_after(Node) ->
-spec class_qualifier(syntaxTree(), syntaxTree()) -> syntaxTree().
class_qualifier(Class, Body) ->
+ Underscore = {var, get_pos(Body), '_'},
tree(class_qualifier,
- #class_qualifier{class = Class, body = Body}).
+ #class_qualifier{class = Class, body = Body,
+ stacktrace = Underscore}).
+
+%% =====================================================================
+%% @doc Creates an abstract class qualifier. The result represents
+%% "<code><em>Class</em>:<em>Body</em>:<em>Stacktrace</em></code>".
+%%
+%% @see class_qualifier_argument/1
+%% @see class_qualifier_body/1
+%% @see try_expr/4
+
+-spec class_qualifier(syntaxTree(), syntaxTree(), syntaxTree()) ->
+ syntaxTree().
+
+class_qualifier(Class, Body, Stacktrace) ->
+ tree(class_qualifier,
+ #class_qualifier{class = Class,
+ body = Body,
+ stacktrace = Stacktrace}).
%% =====================================================================
@@ -6763,6 +6789,16 @@ class_qualifier_argument(Node) ->
class_qualifier_body(Node) ->
(data(Node))#class_qualifier.body.
+%% =====================================================================
+%% @doc Returns the stacktrace subtree of a `class_qualifier' node.
+%%
+%% @see class_qualifier/2
+
+-spec class_qualifier_stacktrace(syntaxTree()) -> syntaxTree().
+
+class_qualifier_stacktrace(Node) ->
+ (data(Node))#class_qualifier.stacktrace.
+
%% =====================================================================
%% @doc Creates an abstract "implicit fun" expression. If
@@ -7727,8 +7763,9 @@ subtrees(T) ->
catch_expr ->
[[catch_expr_body(T)]];
class_qualifier ->
- [[class_qualifier_argument(T)],
- [class_qualifier_body(T)]];
+ [[class_qualifier_argument(T)],
+ [class_qualifier_body(T)],
+ [class_qualifier_stacktrace(T)]];
clause ->
case clause_guard(T) of
none ->
@@ -7949,6 +7986,7 @@ make_tree(block_expr, [B]) -> block_expr(B);
make_tree(case_expr, [[A], C]) -> case_expr(A, C);
make_tree(catch_expr, [[B]]) -> catch_expr(B);
make_tree(class_qualifier, [[A], [B]]) -> class_qualifier(A, B);
+make_tree(class_qualifier, [[A], [B], [C]]) -> class_qualifier(A, B, C);
make_tree(clause, [P, B]) -> clause(P, none, B);
make_tree(clause, [P, [G], B]) -> clause(P, G, B);
make_tree(cond_expr, [C]) -> cond_expr(C);
diff --git a/lib/syntax_tools/src/erl_syntax_lib.erl b/lib/syntax_tools/src/erl_syntax_lib.erl
index c7f477c4d2..ced0dba3e2 100644
--- a/lib/syntax_tools/src/erl_syntax_lib.erl
+++ b/lib/syntax_tools/src/erl_syntax_lib.erl
@@ -1317,6 +1317,8 @@ analyze_attribute(Node) ->
include_lib -> preprocessor;
ifdef -> preprocessor;
ifndef -> preprocessor;
+ 'if' -> preprocessor;
+ elif -> preprocessor;
else -> preprocessor;
endif -> preprocessor;
A ->
diff --git a/lib/syntax_tools/src/merl_transform.erl b/lib/syntax_tools/src/merl_transform.erl
index b298bc407f..571d7e4d86 100644
--- a/lib/syntax_tools/src/merl_transform.erl
+++ b/lib/syntax_tools/src/merl_transform.erl
@@ -196,7 +196,7 @@ var_name(V) -> V.
var_to_tag(V) when is_integer(V) -> V;
var_to_tag(V) ->
- list_to_atom(string:to_lower(atom_to_list(V))).
+ list_to_atom(string:lowercase(atom_to_list(V))).
pre_expand_case(Expr, Clauses, Line) ->
merl:qquote(Line, "merl:switch(_@expr, _@clauses)",
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 20:38:03 +0000