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refactor comma reader

This commit is contained in:
Yuichi Nishiwaki 2014-08-12 10:52:35 +09:00
parent 058de5b7e9
commit d78026ac05
1 changed files with 15 additions and 9 deletions
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24
src/read.c
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@ -178,15 +178,19 @@ read_quasiquote(pic_state *pic, struct pic_port *port, int c)
}
static pic_value
read_comma(pic_state *pic, struct pic_port *port, int c)
read_unquote(pic_state *pic, struct pic_port *port, int c)
{
c = next(port);
UNUSED(c);
if (c == '@') {
return pic_list2(pic, pic_sym_value(pic->sUNQUOTE_SPLICING), read(pic, port, next(port)));
} else {
return pic_list2(pic, pic_sym_value(pic->sUNQUOTE), read(pic, port, c));
}
return pic_list2(pic, pic_sym_value(pic->sUNQUOTE), read(pic, port, next(port)));
}
static pic_value
read_unquote_splicing(pic_state *pic, struct pic_port *port, int c)
{
UNUSED(c);
return pic_list2(pic, pic_sym_value(pic->sUNQUOTE_SPLICING), read(pic, port, next(port)));
}
static pic_value
@ -763,7 +767,8 @@ DEFINE_READER(read_unmatch)
DEFINE_READER(read_comment)
DEFINE_READER(read_quote)
DEFINE_READER(read_quasiquote)
DEFINE_READER(read_comma)
DEFINE_READER(read_unquote)
DEFINE_READER(read_unquote_splicing)
DEFINE_READER(read_string)
DEFINE_READER(read_pipe)
DEFINE_READER(read_plus)
@ -792,7 +797,8 @@ pic_init_reader(pic_state *pic)
pic_define_reader(pic, ";", pic_read_comment);
pic_define_reader(pic, "'", pic_read_quote);
pic_define_reader(pic, "`", pic_read_quasiquote);
pic_define_reader(pic, ",", pic_read_comma);
pic_define_reader(pic, ",", pic_read_unquote);
pic_define_reader(pic, ",@", pic_read_unquote_splicing);
pic_define_reader(pic, "\"", pic_read_string);
pic_define_reader(pic, "|", pic_read_pipe);
pic_define_reader(pic, "+", pic_read_plus);