hy/bin/hy

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#!/usr/bin/env python
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import hy
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import sys
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import os
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if len(sys.argv) > 1:
from hy.importer import import_file_to_module
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sys.argv.pop(0)
import_file_to_module("__main__", sys.argv[0])
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sys.exit(0) # right?
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import readline
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import code
import ast
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from hy.lex.states import Idle, LexException
from hy.lex.machine import Machine
from hy.compiler import hy_compile
from hy.core import process
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from hy.macros import macro
from hy.models.expression import HyExpression
from hy.models.string import HyString
from hy.models.symbol import HySymbol
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_machine = Machine(Idle, 1, 0)
class HyREPL(code.InteractiveConsole):
def runsource(self, source, filename='<input>', symbol='single'):
global _machine
try:
_machine.process(source + "\n")
except LexException as e:
_machine = Machine(Idle, 1, 0)
self.showsyntaxerror(filename)
return False
if type(_machine.state) != Idle:
_machine = Machine(Idle, 1, 0)
return True
tokens = process(_machine.nodes)
_machine = Machine(Idle, 1, 0)
_ast = hy_compile(tokens, root=ast.Interactive)
code = compile(_ast, filename, symbol)
self.runcode(code)
return False
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sys.ps1 = "=> "
sys.ps2 = "... "
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history = os.path.expanduser("~/.hy-history")
readline.parse_and_bind("set blink-matching-paren on")
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@macro("koan")
def koan_macro(tree):
return HyExpression([HySymbol('print'),
HyString("""
Ummon asked the head monk, "What sutra are you lecturing on?"
"The Nirvana Sutra."
"The Nirvana Sutra has the Four Virtues, hasn't it?"
"It has."
Ummon asked, picking up a cup, "How many virtues has this?"
"None at all, " said the monk.
"But ancient people said it had, didn't they?" said Ummon.
"Whatdo you think of what they said?"
Ummon struck the cup and asked, "You understand?"
"No," said the monk.
"Then," said Ummon, "You'd better go on with your lectures on the sutra."
""")])
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@macro("ideas")
def koan_macro(tree):
return HyExpression([HySymbol('print'),
HyString("""
=> (import-from sh figlet)
=> (figlet "Hi, Hy!")
_ _ _ _ _ _
| | | (_) | | | |_ _| |
| |_| | | | |_| | | | | |
| _ | |_ | _ | |_| |_|
|_| |_|_( ) |_| |_|\__, (_)
|/ |___/
;;; string things
(.join ", " ["what" "the" "heck"])
;;; this one plays with command line bits
(import-from sh cat grep)
(-> (cat "/usr/share/dict/words") (grep "-E" "bro$"))
;;; filtering a list w/ a lambda
(filter (lambda [x] (= (% x 2) 0)) (range 0 10))
;;; swaggin' functional bits (Python rulez)
(max (map (lambda [x] (len x)) ["hi" "my" "name" "is" "paul"]))
""")])
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try:
readline.read_history_file(history)
except IOError:
open(history, 'wa').close()
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# readline.parse_and_bind("tab: complete")
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hr = HyREPL()
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hr.interact("{appname} {version}".format(
appname=hy.__appname__,
version=hy.__version__
))
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readline.write_history_file(history)