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-rw-r--r--lib/syntax_tools/src/erl_syntax.erl25
1 files changed, 22 insertions, 3 deletions
diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl
index 4347cc46c1..9b2b503762 100644
--- a/lib/syntax_tools/src/erl_syntax.erl
+++ b/lib/syntax_tools/src/erl_syntax.erl
@@ -139,6 +139,7 @@
is_atom/2,
atom_value/1,
atom_literal/1,
+ atom_literal/2,
atom_name/1,
attribute/1,
attribute/2,
@@ -1841,7 +1842,7 @@ char_literal(Node) ->
%% @doc Returns the literal string represented by a `char'
%% node. This includes the leading "`$'" character.
%% Depending on the encoding a character beyond 255 will be escaped
-%% ('latin1') or copied as is ('utf8').
+%% (`latin1') or copied as is (`utf8').
%%
%% @see char/1
@@ -1944,7 +1945,7 @@ string_literal(Node) ->
%% @doc Returns the literal string represented by a `string'
%% node. This includes surrounding double-quote characters.
%% Depending on the encoding characters beyond 255 will be escaped
-%% ('latin1') or copied as is ('utf8').
+%% (`latin1') or copied as is (`utf8').
%%
%% @see string/1
@@ -1965,6 +1966,7 @@ string_literal(Node, latin1) ->
%% @see atom_value/1
%% @see atom_name/1
%% @see atom_literal/1
+%% @see atom_literal/2
%% @see is_atom/2
%% type(Node) = atom
@@ -2037,6 +2039,7 @@ atom_name(Node) ->
%% =====================================================================
%% @doc Returns the literal string represented by an `atom'
%% node. This includes surrounding single-quote characters if necessary.
+%% Characters beyond 255 will be escaped.
%%
%% Note that e.g. the result of `atom("x\ny")' represents
%% any and all of `'x\ny'', `'x\12y'',
@@ -2048,8 +2051,24 @@ atom_name(Node) ->
-spec atom_literal(syntaxTree()) -> string().
atom_literal(Node) ->
- io_lib:write_atom(atom_value(Node)).
+ atom_literal(Node, latin1).
+
+%% =====================================================================
+%% @doc Returns the literal string represented by an `atom'
+%% node. This includes surrounding single-quote characters if necessary.
+%% Depending on the encoding a character beyond 255 will be escaped
+%% (`latin1') or copied as is (`utf8').
+%%
+%% @see atom/1
+%% @see atom_literal/1
+%% @see string/1
+atom_literal(Node, utf8) ->
+ io_lib:write_atom(atom_value(Node));
+atom_literal(Node, unicode) ->
+ io_lib:write_atom(atom_value(Node));
+atom_literal(Node, latin1) ->
+ io_lib:write_atom_as_latin1(atom_value(Node)).
%% =====================================================================
%% @equiv map_expr(none, Fields)