diff options
Diffstat (limited to 'shen/basic.shen')
-rw-r--r-- | shen/basic.shen | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/shen/basic.shen b/shen/basic.shen new file mode 100644 index 0000000..89a998e --- /dev/null +++ b/shen/basic.shen @@ -0,0 +1,18 @@ +(define priority-op + { symbol --> number } + not -> 1 + uminus -> 7) + +(define pp-binop + { symbol --> string } + plus -> "+" + mult -> "*") + +(define parenthesis + { string --> string } + X -> (@s "(" X ")")) + +(define isdigit + { string --> boolean } + C -> (let CN (string->n C) + (and (>= CN (string->n "0")) (<= CN (string->n "9"))))) |