def feed(s, inp):
s.g = Grammar()
# this calls symbol_new() repeatedly inp.num_syms times, and gathers the
# results in a list # this is too smart. also, todo: make symbol_new throw exceptions
s.c_syms = list(starmap(s.g.symbol_new, repeat(tuple(), inp.num_syms)))
for k, v in iteritems(inp.symbol_ranks):
s.g.symbol_rank_set(k, v)
log(("symbol rank:", k, v))
if args.log_parsing:
log("s.c_syms:%s", s.c_syms)
s.g.start_symbol_set(s.c_syms[inp.start])
s.c_rules = []
for rule in inp.rules:
if rule[0]: # its a sequence
_, _, lhs, rhs, action, sep, min, prop = rule
s.c_rules.append(s.g.sequence_new(lhs, rhs, sep, min, prop))
else:
_, _, lhs, rhs, _, rank = rule
cr = s.g.rule_new(lhs, rhs)
if cr != -2:
s.c_rules.append(cr)
if rank != 0:
s.g.rule_rank_set(cr, rank)
log(("rank ", rule, rank))
if args.graph_grammar:
graphing_wrapper.generate_png()
# graphing_wrapper.generate_gv()
s.g.precompute()
# check_accessibility()
s.send(Dotdict(message="precomputed", for_node=inp.for_node))
def set_atts(editor, proxied_atts):
atts = {}
for k,v in iteritems(proxied_atts):
if v:
atts[k] = unproxy_atts(v)
else:
atts[k] = None
log("setting atts under cursor to %s", pp(atts))
editor.atts = Atts(atts)
editor.on_atts_change.emit()
def handler_str(mod): for k,h in iteritems(global_keys[frozenset(mod)]): name = None if type(h) == tuple: if h[1] == HIDDEN: continue elif type(h[1]) == str: name = h[1] h = h[0] if name == None: name = h.__name__ yield key_str(k) + ": " + name
def add_keys(node, sup, handlers): if sup == -1: node.keys = node.__bases__[-1].keys.copy() elif sup == None: node.keys = odict() else: node.keys = sup.keys.copy() for k, v in iteritems(handlers): if type(k.key) == tuple: for key in k.key: node.keys[K(k.mods, key)] = v else: node.keys[k] = v
def potential_handlers(trip):
"""return every handler for the elements in trip and parents, whose checker passess.
mods and key are irrelevant, we arent dealing with any particular event
"""
output = odict()
elems = [x.get(Att.elem) for x in [trip.middle or {}, trip.left or {}, trip.right or {}]]
while any(elems):
for elem, sidedness, atts in [
(elems[0], None, trip.middle),
(elems[1], LEFT, trip.left),
(elems[2], RIGHT, trip.right)]:
if elem:
for keys, handler in iteritems(elem.keys):
if handler.sidedness in (None, sidedness):
if not handler.checker or handler.checker(elem, atts):
if keys not in output:
yield keys, (elem, handler)
output[keys] = True
for i in range(3):
if elems[i]:
elems[i] = elems[i].parent
def click(s,e): for i,r in iteritems(s.drawn_rects): if collidepoint(r, e.pos): s.counterpart.sel = i s.counterpart.accept() break
def cache(): global invert, mono invert = args.invert mono = args.mono for k,v in iteritems(default_colors.__dict__): colors.__dict__[k] = modify(v)
def precompute_grammar(s, inp):
log('precompute_grammar...')
s.debug_sym_names = inp.debug_sym_names
s.rules = inp.rules
s.debug = inp.debug
graphing_wrapper.clear()
s.g = Grammar()
# this calls symbol_new() repeatedly inp.num_syms times, and gathers the
# results in a list # this is too smart. also, todo: make symbol_new throw exceptions
s.c_syms = list(starmap(s.g.symbol_new, repeat(tuple(), inp.num_syms)))
for x in s.c_syms:
marpa_cffi.marpa.lib.marpa_g_symbol_is_completion_event_set(s.g.g, x, True)
marpa_cffi.marpa.lib.marpa_g_symbol_is_prediction_event_set(s.g.g, x, True)
for k, v in iteritems(inp.symbol_ranks):
s.g.symbol_rank_set(k, v)
log(("symbol rank:", k, v))
# if args.log_parsing:
# log('s.c_syms:%s',s.c_syms)
s.g.start_symbol_set(s.c_syms[inp.start])
s.c_rules = []
for rule in inp.rules:
log(rule)
if rule[0]: # its a sequence
_, _, lhs, rhs, action, sep, min, prop = rule
s.c_rules.append(s.g.sequence_new(lhs, rhs, sep, min, prop))
else:
_, _, lhs, rhs, _, rank = rule
cr = s.g.rule_new(lhs, rhs)
if cr != -2:
s.c_rules.append(cr)
if rank != 0:
s.g.rule_rank_set(cr, rank)
log(("rank ", rule, rank))
if args.graph_grammar:
def gen():
graphing_wrapper.generate_bnf()
graph = graphing_wrapper.generate('grammar')
graphing_wrapper.generate_gv_dot(graph)
import graphviz
print("generate svg")
graphviz.render('dot', 'svg', 'grammar.gv')
graph = graphing_wrapper.generate2('grammar2', s.c_syms[inp.start])
graphing_wrapper.generate_gv_dot(graph)
print("generate svg")
graphviz.render('dot', 'svg', 'grammar2.gv')
import threading
thr = threading.Thread(target=gen)
thr.run()
if s.g.precompute() == -2:
s.send(Dotdict(message='precompute error', for_node=inp.for_node))
for x in s.c_syms:
if not s.g.symbol_is_accessible(x):
log("inaccessible symbol: %s " % s.symbol2debug_name(x))
s.send(Dotdict(message='precomputed', for_node=inp.for_node))
def click(s,e): for i,r in iteritems(s.rects): if collidepoint(r, e.pos): s.sel = s.items_on_screen.index(i) s.accept() break
def anything_excepts(s): for k, v in iteritems(s.excepts): for ch, sym in iteritems(s.known_chars): if ch != k: s.rule(ch + " is anything except "+k, v, [sym])
def worksas_magic(s, scope):
#ok here we're gonna walk thru WorkAssess and BindsTighters and do the precedence and associativity magic
# http://pages.cs.wisc.edu/~fischer/cs536.s08/course.hold/html/NOTES/3.CFG.html#prec
# https://metacpan.org/pod/distribution/Marpa-R2/pod/Scanless/DSL.pod#priority
"""
so, i think we should walk thru all syntaxeds
some appear in other nodes grammar literally, like a TypedParameter in a list_of(TypedParameter).
for this reason, i would assign each syntaxed a symbol.
Additionally, some are denoted with "*sub works as *sup", to work as, for example, an expression.
presumably, there will be only one sup for any sub.
"""
worksases = collections.defaultdict(list)
asoc = collections.defaultdict(lambda: "left")
pris = collections.defaultdict(lambda: 1000)
worksases2 = collections.defaultdict(lambda: collections.defaultdict(list))
log("magic:")
import nodes
simple = 0
for n in scope:
if n.__class__.__name__ == 'WorksAs':
sup = n.ch.sup.parsed
sub = n.ch.sub.parsed
if not isinstance(sup, nodes.Ref) or not isinstance(sub, nodes.Ref):
print("invalid sub or sup in worksas")
return
sup_target = sup.target
sub_target = sub.target
#if not isinstance(sub_target, (nodes.SyntaxedNodecl, nodes.CustomNodeDef)):
# continue
worksases[sup_target].append(sub_target)
if simple:
rule_lhs = sup_target.symbol(s)
rule_rhs = sub_target.symbol(s)
if args.log_parsing:
log('%s worksas %s\n (%s := %s)'%(sub_target, sup_target, rule_lhs, rule_rhs))
if rule_lhs != None and rule_rhs != None:
r = s.rule(str(n), rule_lhs, rule_rhs)
else:
print('%s or %s is None'%(rule_lhs, rule_rhs))
elif n.__class__ == nodes.CustomNode and n.decl.name == 'haspriority':
k = nodes.deref_def(n.ch.node)
assert k not in pris
pris[k] = n.ch.priority.pyval
elif n.__class__.__name__ == 'HasAssociativity':
k = deref_def(n.ch.node)
assert k not in asoc
asoc[k] = n.ch.value.pyval
if simple:
return
for sup,subs in iteritems(worksases):
for sub in subs:
worksases2[sup][pris[sub]].append(sub)
for sup, priority_levels in iteritems(worksases2):
priority_levels = [v for k, v in sorted(priority_levels.items())]
def lhs_symbol(level_index):
if level_index == len(priority_levels):
level_index = 0
if level_index == 0:
return sup.symbol(s)
else:
return s.named_symbol2(sup.name + str(level_index))
for level_index in range(len(priority_levels)):
lhs = lhs_symbol(level_index)
next_level_lhs = lhs_symbol(level_index+1)
if lhs != next_level_lhs and level_index != len(priority_levels)-1:
s.rule("|"+s.symbol2debug_name(lhs) + ":=" + s.symbol2debug_name(next_level_lhs), lhs, next_level_lhs)
for sub in priority_levels[level_index]:
if not isinstance(sub, (nodes.SyntaxedNodecl, nodes.CustomNodeDef)):
s.rule(s.symbol2debug_name(lhs) + ":=" + s.symbol2debug_name(sub.symbol(s)), lhs, sub.symbol(s))
continue
for sy in sub.instance_syntaxes:
syntax = []
slot_idx = 0
for i in sy.rendering_tags:
if isinstance(i, str):
a = s.known_string(i)
else:
slot = nodes.deref_decl(sub.instance_slots[i.name])
if slot == sup:
if slot_idx == 0:
a = lhs
else:
a = next_level_lhs
else:
a = slot.symbol(s)
slot_idx+=1
syntax.append(a)
s.rule(s.symbol2debug_name(lhs) + ":=" + "".join([s.symbol2debug_name(i) for i in syntax]),
lhs, syntax,
action=lambda x,decl=sub,syntax=sy: nodes.SyntaxedBase.from_parse(decl, syntax, x, whole_words=True))
"""
for sup,levels in iteritems(worksas2):
for level in levels:
for sub in level:
if asoc[node] == "left":
rules[sup].append(
if asoc[node] == "right":
"""
"""
nodes = DefaultDict(list)
asoc = DefaultDict(lambda: "left")
pris = DefaultDict(lambda: 1000)
for n in scope:
if n.__class__.__name__ in ['SyntaxedNodecl']:
nodes.append(n)
if n.__class__.__name__ == 'HasPriority':
k = deref_def(n.ch.node)
assert k not in pris
pris[k] = n.ch.value.pyval
if n.__class__.__name__ == 'HasAssociativity':
k = deref_def(n.ch.node)
assert k not in asoc
asoc[k] = n.ch.value.pyval
for sup,subs in iteritems(worksas):
for sub in subs:
worksas2[k][pris[v]].append(v)
for sup,levels in iteritems(worksas2):
for level in levels:
for sub in level:
if asoc[node] == "left":
rules[sup].append(
if asoc[node] == "right":
"""
"""
worksas = DefaultDict(list)
asoc = DefaultDict(lambda: "left")
pris = DefaultDict(lambda: 1000)
for i in scope:
if i.__class__.__name__ == 'WorksAs':
worksas[i.ch.sup.target].append(i.ch.sub.target)
if n.__class__.__name__ == 'HasPriority':
k = deref_def(n.ch.node)
assert k not in pris
pris[k] = n.ch.value.pyval
if n.__class__.__name__ == 'HasAssociativity':
k = deref_def(n.ch.node)
assert k not in asoc
asoc[k] = n.ch.value.pyval
for sup,subs in iteritems(worksas):
for sub in subs:
worksas2[k][pris[v]].append(v)
for sup,levels in iteritems(worksas2):
for level in levels:
for sub in level:
if asoc[node] == "left":
rules[sup].append(
if asoc[node] == "right":
"""
"""
levels = {}
import collections
levels = collections.OrderedDict(sorted(levels.items()))
for k,v
"""
"""
