diff options
Diffstat (limited to 'lib/syntax_tools/src/erl_syntax.erl')
| -rw-r--r-- | lib/syntax_tools/src/erl_syntax.erl | 48 |
1 files changed, 46 insertions, 2 deletions
diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl index 151f04b03b..93b9dc54dd 100644 --- a/lib/syntax_tools/src/erl_syntax.erl +++ b/lib/syntax_tools/src/erl_syntax.erl @@ -161,6 +161,7 @@ is_char/2, char_value/1, char_literal/1, + char_literal/2, clause/2, clause/3, clause_body/1, @@ -271,6 +272,7 @@ is_string/2, string_value/1, string_literal/1, + string_literal/2, text/1, text_string/1, try_expr/2, @@ -1628,6 +1630,7 @@ float_literal(Node) -> %% %% @see char_value/1 %% @see char_literal/1 +%% @see char_literal/2 %% @see is_char/2 %% type(Node) = char @@ -1687,13 +1690,34 @@ char_value(Node) -> %% ===================================================================== %% @doc Returns the literal string represented by a `char' %% node. This includes the leading "`$'" character. +%% Characters beyond 255 will be escaped. %% %% @see char/1 -spec char_literal(syntaxTree()) -> nonempty_string(). char_literal(Node) -> - io_lib:write_char(char_value(Node)). + char_literal(Node, latin1). + + +%% ===================================================================== +%% @doc Returns the literal string represented by a `char' +%% node. This includes the leading "`$'" character. +%% Depending on the encoding a character beyond 255 will be escaped +%% ('latin1') or copied as is ('utf8'). +%% +%% @see char/1 + +-type encoding() :: 'utf8' | 'unicode' | 'latin1'. + +-spec char_literal(syntaxTree(), encoding()) -> nonempty_string(). + +char_literal(Node, unicode) -> + io_lib:write_unicode_char(char_value(Node)); +char_literal(Node, utf8) -> + io_lib:write_unicode_char(char_value(Node)); +char_literal(Node, latin1) -> + io_lib:write_unicode_char_as_latin1(char_value(Node)). %% ===================================================================== @@ -1708,6 +1732,7 @@ char_literal(Node) -> %% %% @see string_value/1 %% @see string_literal/1 +%% @see string_literal/2 %% @see is_string/2 %% @see char/1 @@ -1768,13 +1793,32 @@ string_value(Node) -> %% ===================================================================== %% @doc Returns the literal string represented by a `string' %% node. This includes surrounding double-quote characters. +%% Characters beyond 255 will be escaped. %% %% @see string/1 -spec string_literal(syntaxTree()) -> nonempty_string(). string_literal(Node) -> - io_lib:write_string(string_value(Node)). + string_literal(Node, latin1). + + +%% ===================================================================== +%% @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'). +%% +%% @see string/1 + +-spec string_literal(syntaxTree(), encoding()) -> nonempty_string(). + +string_literal(Node, utf8) -> + io_lib:write_unicode_string(string_value(Node)); +string_literal(Node, unicode) -> + io_lib:write_unicode_string(string_value(Node)); +string_literal(Node, latin1) -> + io_lib:write_unicode_string_as_latin1(string_value(Node)). %% ===================================================================== |