def populate_globals(env):
# Builtin *functions* take an environment, rather than individual
# args.
##
# Add:
#
def builtin_add(env):
x = env.lookup("x").number
y = env.lookup("y").number
return Number(x + y)
# Builtin *objects* have arglists, though.
iplus = Builtin(builtin_add, [Symbol("x"), Symbol("y")])
env.set("add", iplus)
##
# Lambda:
#
def builtin_lambda(env):
args = env.lookup("args")
body = env.lookup("body")
return Lambda(args.items, body, env.calling_environment)
fn = Builtin(builtin_lambda, [
List([Symbol("quote"), Symbol("args")]),
List([Symbol("quote"), Symbol("body")])
])
env.set("fn", fn)
env.set("λ", fn)
##
# Set:
#
def builtin_set(env):
sym = env.lookup("symbol")
val = env.lookup("value")
env.calling_environment.set(sym.symbol, val)
return val
env.set(
"set",
Builtin(builtin_set,
[List([Symbol("quote"), Symbol("symbol")]),
Symbol("value")]))
return env
def coerce_by_default(method):
def default(argv):
args = coerce.call(argv)
assert isinstance(args, List)
return method.call_suppressed(args.contents)
method.default = Builtin(default)
def coerce_by_default(method):
def default(argv):
args = coerce.call(argv)
if not isinstance(args, List):
raise space.unwind(space.LError(u"coerce should return list"))
return method.call_suppressed(args.contents)
method.default = Builtin(default)
def _decarotar_(fn):
from builtin import Builtin
builtin = Builtin(decorator(fn), name)
cls.interface.methods[builtin.name] = builtin
return fn
def builtin_method(cls, fn):
from builtin import Builtin
builtin = Builtin(fn)
cls.interface.methods[builtin.name] = builtin
@le.multimethod_s(String, String)
def _(a, b):
return boolean(a.string <= b.string)
@ge.multimethod_s(String, String)
def _(a, b):
return boolean(a.string >= b.string)
@signature(Object, Object)
def ne_default(a, b):
return boolean(is_false(eq.call([a, b])))
ne.default = Builtin(ne_default)
@ne.multimethod_s(Integer, Integer)
def _(a, b):
return boolean(a.value != b.value)
@ne.multimethod_s(Float, Float)
def _(a, b):
return boolean(a.number != b.number)
@ne.multimethod_s(String, String)
def _(a, b):
return boolean(a.string != b.string)
def _impl_(fn):
self.methods[vec] = Builtin(fn)
return fn
def _impl_(fn):
self.multimethod_table[vec] = Builtin(fn)
return fn
@le.multimethod_s(Float, Float)
def cmp_le(a, b):
return boolean(a.number <= b.number)
@ge.multimethod_s(Float, Float)
def cmp_ge(a, b):
return boolean(a.number >= b.number)
@signature(Object, Object)
def ne_default(a, b):
return boolean(a != b)
ne.default = Builtin(ne_default)
@ne.multimethod_s(Integer, Integer)
def _(a, b):
return boolean(a.value != b.value)
@ne.multimethod_s(Float, Float)
def _(a, b):
return boolean(a.number != b.number)
@ne.multimethod_s(String, String)
def _(a, b):
return boolean(not a.eq(b))
@le.multimethod_s(String, String)
def _(a, b):
return boolean(a.string <= b.string)
@ge.multimethod_s(String, String)
def _(a, b):
return boolean(a.string >= b.string)
@signature(Object, Object)
def ne_default(a, b):
return boolean(is_false(eq.call([a, b])))
ne.default = Builtin(ne_default)
@ne.multimethod_s(Integer, Integer)
def _(a, b):
return boolean(a.value != b.value)
@ne.multimethod_s(Float, Float)
def _(a, b):
return boolean(a.number != b.number)
@ne.multimethod_s(String, String)
def _(a, b):
return boolean(a.string != b.string)
def _impl_(fn):
bfn = Builtin(fn)
record = MultimethodRecord(self, vec, bfn)
self.register_record(record)
return fn
