python uxn repl

uxnrepl

@@ -0,0 +1,71 @@
+#!/usr/bin/python
+
+from os import system
+from sys import stdin, stdout
+from tempfile import mkstemp
+
+template = '''
+|0100
+    ( start ) %s ( end )
+
+    #05 DEI ,emit-wst/n STR
+    ;wst print
+
+@dump-wst
+    #04 DEI #01 GTH ?&next !emit-wst &next STH !dump-wst
+
+@emit-wst 
+    #05 DEI LIT [ &n $1 ] GTH ?&next #0a18 DEO !start-rst
+    &next STHr emit #2018 DEO !emit-wst
+
+@start-rst
+    ;rst print
+
+@dump-rst
+    #05 DEI #00 GTH ?&next !emit-rst &next STHr !dump-rst
+
+@emit-rst
+    #04 DEI #01 GTH ?&next #0a18 DEO #800f DEO BRK
+    &next emit #2018 DEO !emit-rst
+
+@print ( addr* -> )
+    LDAk DUP ?{ POP POP2 JMP2r } #18 DEO INC2 !print
+
+@emit
+    DUP #04 SFT ,&ch JSR
+    &ch #0f AND DUP #09 GTH #27 MUL ADD #30 ADD #18 DEO JMP2r
+
+@rst "rst 20 00
+@wst "wst 20 00
+'''
+
+_, tmp_tal = mkstemp(suffix='.tal', prefix='uxnrepl')
+_, tmp_rom = mkstemp(suffix='.rom', prefix='uxnrepl')
+
+def write_rom(s):
+    f = open(tmp_tal, 'w')
+    prog = template % s
+    f.write(prog)
+    f.close()
+
+def run(s):
+    write_rom(s)
+    res = system('uxnasm %s %s 2>/dev/null' % (tmp_tal, tmp_rom))
+    if res != 0:
+        system('uxnasm %s %s' % (tmp_tal, tmp_rom))
+        return
+    system('uxncli %s' % tmp_rom)
+
+def main():
+    print('uxnrepl (ctrl-d to exit)')
+    while True:
+        stdout.write('> ')
+        stdout.flush()
+        s = stdin.readline()
+        if not s:
+            print('bye!')
+            break
+        run(s)
+
+if __name__ == "__main__":
+    main()