def repl(hook):
lineno = 0
tokens = []
while True:
try:
log = pyson.Log(pyson.get_logger(__name__), 3)
if not tokens:
line = pyson.util.prompt("pyson.parser >>> ")
else:
line = pyson.util.prompt("pyson.parser ... ")
lineno += 1
tokens.extend(pyson.lexer.tokenize(pyson.StringSource("<stdin>", line), log, lineno))
while tokens:
token_stream = iter(tokens)
try:
agent = parse_agent("<stdin>", token_stream, log, frozenset())
except StopIteration:
log.throw()
break
else:
log.throw()
hook(agent)
tokens = list(token_stream)
except pyson.AggregatedError as error:
print(str(error), file=sys.stderr)
tokens = []
except KeyboardInterrupt:
print()
sys.exit(0)
def test_unexpected_eof(self):
src = pyson.StringSource("<test>", "a")
log = pyson.Log(pyson.get_logger(__name__), 3)
tokens = pyson.lexer.TokenStream(src, log)
with self.assertRaises(pyson.AggregatedError):
pyson.parser.parse(tokens, log, frozenset())
def main(source, lineno=1):
log = pyson.Log(pyson.get_logger(__name__), 3)
for tok in tokenize(source, log, lineno):
log.info("%s", tok.lexeme, loc=tok.loc)
log.throw()
def test_unify_return_value(self):
src = pyson.StringSource("<test>", "+!p <- (X = 2) + 1 > 0.")
log = pyson.Log(pyson.get_logger(__name__), 3)
tokens = pyson.lexer.TokenStream(src, log)
with self.assertRaises(pyson.AggregatedError):
pyson.parser.parse(tokens, log, frozenset())
log.throw()
def test_rule_head_not_unifiable(self):
src = pyson.StringSource("<test>", "rule(X + 1) :- true.")
log = pyson.Log(pyson.get_logger(__name__), 3)
tokens = pyson.lexer.TokenStream(src, log)
pyson.parser.parse(tokens, log, frozenset())
with self.assertRaises(pyson.AggregatedError):
log.throw()
def test_formula_type(self):
src = pyson.StringSource("<test>", "+!plan <- ?true.")
log = pyson.Log(pyson.get_logger(__name__), 3)
tokens = pyson.lexer.TokenStream(src, log)
pyson.parser.parse(tokens, log, frozenset())
with self.assertRaises(pyson.AggregatedError):
log.throw()
def main(source, hook):
log = pyson.Log(pyson.get_logger(__name__), 3)
tokens = pyson.lexer.TokenStream(source, log, 1)
agent = parse(source.name, tokens, log)
log.throw()
hook(agent)
import sys
import collections
import copy
import functools
import os.path
import time
import pyson
import pyson.parser
import pyson.lexer
import pyson.util
from pyson import UnaryOp, BinaryOp, PysonError, pyson_str
LOGGER = pyson.get_logger(__name__)
class BuildTermVisitor:
def __init__(self, variables):
self.variables = variables
def visit_literal(self, ast_literal):
return pyson.Literal(ast_literal.functor,
(t.accept(self) for t in ast_literal.terms),
(t.accept(self) for t in ast_literal.annotations))
def visit_const(self, ast_const):
return ast_const.value
def visit_list(self, ast_list):
