def fnReader(rdr, lparen):
"""Read an anonymous function #() from reader
rdr -- a read/unread-able object
lparen -- ignored
Return an IPersistentList"""
if ARG_ENV.deref() is not None:
raise IllegalStateException("Nested #()s are not allowed")
with threadBindings(RT.map(ARG_ENV, EMPTY_MAP)):
rdr.back()
form = read(rdr, True, None, True)
drefed = ARG_ENV.deref()
sargs = sorted(list(filter(lambda x: x != -1, drefed)))
args = []
if len(sargs):
for x in range(1, int(str(sargs[-1])) + 1):
if x in drefed:
args.append(drefed[x])
else:
args.append(garg(x))
retsym = drefed[-1]
if retsym is not None:
args.append(_AMP_)
args.append(retsym)
vargs = RT.vector(*args)
return RT.list(_FN_, vargs, form)
def fnReader(rdr, lparen):
from clojure.lang.persistenthashmap import EMPTY
from clojure.lang.var import popThreadBindings, pushThreadBindings
if ARG_ENV.deref() is not None:
raise IllegalStateException("Nested #()s are not allowed")
pushThreadBindings(RT.map(ARG_ENV, EMPTY))
rdr.back()
form = read(rdr, True, None, True)
drefed = ARG_ENV.deref()
sargs = sorted(list(filter(lambda x: x != -1, drefed)))
args = []
if len(sargs):
for x in range(1, int(str(sargs[-1])) + 1):
if x in drefed:
args.append(drefed[x])
else:
args.append(garg(x))
retsym = drefed[-1]
if retsym is not None:
args.append(_AMP_)
args.append(retsym)
vargs = RT.vector(*args)
popThreadBindings()
return RT.list(_FN_, vargs, form)
def metaReader(rdr, caret):
from clojure.lang.symbol import Symbol
from clojure.lang.cljkeyword import Keyword, TAG_KEY, T
from clojure.lang.ipersistentmap import IPersistentMap
line = rdr.lineCol()[0]
meta = read(rdr, True, None, True)
if isinstance(meta, Symbol) or isinstance(meta, str):
meta = RT.map(TAG_KEY, meta)
elif isinstance(meta, Keyword):
meta = RT.map(meta, T)
elif not isinstance(meta, IPersistentMap):
raise ReaderException("Metadata must be Symbol,Keyword,String or Map")
o = read(rdr, True, None, True)
if not hasattr(o, "withMeta"):
raise ReaderException("Cannot attach meta to a object without .withMeta")
return o.withMeta(meta)
def __call__(self, r, backquote):
pushThreadBindings(RT.map(GENSYM_ENV, EMPTY_MAP))
try:
self.rdr = r
form = read(r, True, None, True)
return self.syntaxQuote(form)
finally:
popThreadBindings()
def varQuoteReader(rdr, singlequote):
"""Return the list (var next-object-read)
rdr -- read/unread-able object
singlequote -- ignored"""
line = rdr.lineCol()[0]
form = read(rdr, True, None, True)
return RT.list(_VAR_, form).withMeta(RT.map(LINE_KEY, line))
def __call__(self, r, backquote):
pushThreadBindings(RT.map(GENSYM_ENV, EMPTY_MAP))
try:
self.rdr = r
form = read(r, True, None, True)
return self.syntaxQuote(form)
finally:
popThreadBindings()
def listReader(rdr, leftparen):
"""Read and return a possibly empty list () from rdr.
rdr -- a read/unread-able object
leftparen -- ignored"""
startline = rdr.lineCol()[0]
lst = readDelimitedList(')', rdr, True)
lst = apply(RT.list, lst)
return lst.withMeta(RT.map(LINE_KEY, startline))
def metaReader(rdr, caret):
"""Read two objects from rdr. Return second with first as meta data.
rdr -- read/unread-able object
caret -- ignored
May raise ReaderException."""
line = rdr.lineCol()[0]
meta = read(rdr, True, None, True)
if isinstance(meta, (str, Symbol)):
meta = RT.map(TAG_KEY, meta)
elif isinstance(meta, Keyword):
meta = RT.map(meta, T)
elif not isinstance(meta, IPersistentMap):
raise ReaderException("Metadata must be Symbol,Keyword,String or Map", rdr)
o = read(rdr, True, None, True)
if not hasattr(o, "withMeta"):
# can't attach rdr to the exception here as it would point
# to the *end* of the object just read'
raise ReaderException("Cannot attach meta to a object without" " .withMeta")
return o.withMeta(meta)
def metaReader(rdr, caret):
"""Read two objects from rdr. Return second with first as meta data.
rdr -- read/unread-able object
caret -- ignored
May raise ReaderException."""
line = rdr.lineCol()[0]
meta = read(rdr, True, None, True)
if isinstance(meta, (str, Symbol)):
meta = RT.map(TAG_KEY, meta)
elif isinstance(meta, Keyword):
meta = RT.map(meta, T)
elif not isinstance(meta, IPersistentMap):
raise ReaderException("Metadata must be Symbol,Keyword,String or Map",
rdr)
o = read(rdr, True, None, True)
if not hasattr(o, "withMeta"):
# can't attach rdr to the exception here as it would point
# to the *end* of the object just read'
raise ReaderException("Cannot attach meta to a object without"
" .withMeta")
return o.withMeta(meta)
def varQuoteReader(rdr, singlequote):
line = rdr.lineCol()[0]
form = read(rdr, True, None, True)
return RT.list(_VAR_, form).withMeta(RT.map(LINE_KEY, line))
def listReader(rdr, leftparen):
startline = rdr.lineCol()[0]
lst = readDelimitedList(')', rdr, True)
lst = apply(RT.list, lst)
return lst.withMeta(RT.map(LINE_KEY, startline))
def __call__(self, r, backquote):
with threadBindings(RT.map(GENSYM_ENV, EMPTY_MAP)):
self.rdr = r
form = read(r, True, None, True)
return self.syntaxQuote(form)
