def test3():
print("\n\n------ Test 3 ---------")
p = BIN_Parser()
g = p.grammar()
print("Reynir.grammar has {0} nonterminals, {1} terminals, {2} productions"
.format(g.num_nonterminals(), g.num_terminals(), g.num_productions()))
def create_sentence_table():
""" Only used to create a test fresh sentence table if one doesn't exist """
with closing(Test_DB.open_db()) as db:
try:
db.create_sentence_table()
TEXTS = [
"Páll fór út með stóran kött og Jón keypti heitan graut.",
"Unga fallega konan frá Garðabæ elti ljóta og feita karlinn rösklega og fumlaust í svörtu myrkrinu",
"Kötturinn sem strákurinn átti veiddi feitu músina",
"Gamla bláa kommóðan var máluð fjólublá með olíumálningu",
"Landsframleiðslan hefur aukist frá því í fyrra",
"Guðmundur og Guðrún kusu Framsóknarflokkinn",
"Þú skalt fara til Danmerkur.",
"Ég og þú fórum til Frakklands í utanlandsferð",
"Stóru bláu könnunni mun hafa verið fleygt í ruslið",
"Már Guðmundsson segir margskonar misskilnings gæta hjá Hannesi Hólmsteini",
"Már Guðmundsson seðlabankastjóri Íslands segir þetta við Morgunblaðið í dag.",
"Það er náttúrlega einungis í samfélögum sem eiga við býsna stór vandamál að stríða að ný stjórnmálaöfl geta snögglega sveiflast upp í þriðjungs fylgi.",
"Áætlaður kostnaður verkefnisins var tíu milljónir króna og áætluð verklok eru í byrjun september næstkomandi.",
"Pakkinn snerist um að ábyrgjast innlán og skuldabréfaútgáfu danskra fjármálafyrirtækja.",
"Kynningarfundurinn sem ég hélt í dag fjallaði um lausnina á þessum vanda.",
"Kynningarfundurinn sem haldinn var í dag fjallaði um lausnina á þessum vanda.",
"Það sakamál sé til meðferðar við Héraðsdóm Suðurlands."
]
for t in TEXTS:
db.add_sentence(t)
slist = db.sentences()
for s in slist:
print("{0}".format(s))
except Exception as e:
print("{0}".format(e))
for test in run_test(p):
print("\n'{0}'\n{1} parse trees found in {2:.3f} seconds\n"
.format(test["sentence"], test["numtrees"], test["parse_time"]))
if test["numtrees"] > 0:
Parser.print_parse_forest(test["forest"])
# print("{0}".format(Parser.make_schema(test["forest"])))
elif test["err"]:
print("Error: {0}".format(test["err"]))
def test():
""" Handler for a page of sentences for testing """
# Run test and show the result
bp = BIN_Parser()
return render_template("test.html", result=run_test(bp))
def parse_grid():
""" Show the parse grid for a particular parse tree of a sentence """
MAX_LEVEL = 32 # Maximum level of option depth we can handle
txt = request.form.get('txt', "")
parse_path = request.form.get('option', "")
# Tokenize the text
tokens = list(tokenize(txt))
# Parse the text
bp = BIN_Parser()
err = dict()
try:
forest = bp.go(tokens)
except ParseError as e:
err["msg"] = str(e)
# Relay information about the parser state at the time of the error
err["info"] = e.info()
forest = None
# Find the number of parse combinations
combinations = Parser.num_combinations(forest) if forest else 0
# Make the parse grid with all options
grid, ncols = Parser.make_grid(forest) if forest else ([], 0)
# The grid is columnar; convert it to row-major
# form for convenient translation into HTML
# There will be as many columns as there are tokens
nrows = len(grid)
tbl = [ [] for _ in range(nrows) ]
# Info about previous row spans
rs = [ [] for _ in range(nrows) ]
# The particular option path we are displaying
if not parse_path:
# Not specified: display the all-zero path
path = [(0,) * i for i in range(1, MAX_LEVEL)]
else:
# Disassemble the passed-in path
def toint(s):
""" Safe conversion of string to int """
try:
n = int(s)
except ValueError:
n = 0
return n if n >= 0 else 0
p = [ toint(s) for s in parse_path.split("_") ]
path = [tuple(p[0 : i + 1]) for i in range(len(p))]
# This set will contain all option path choices
choices = set()
NULL_TUPLE = tuple()
for gix, gcol in enumerate(grid):
# gcol is a dictionary of options
# Accumulate the options that we want do display
# according to chosen path
cols = gcol[NULL_TUPLE] if NULL_TUPLE in gcol else [] # Default content
# Add the options we're displaying
for p in path:
if p in gcol:
cols.extend(gcol[p])
# Accumulate all possible path choices
choices |= gcol.keys()
# Sort the columns that will be displayed
cols.sort(key = lambda x: x[0])
col = 0
for startcol, endcol, info in cols:
assert isinstance(info, Nonterminal) or isinstance(info, tuple)
if col < startcol:
gap = startcol - col
gap -= sum(1 for c in rs[gix] if c < startcol)
if gap > 0:
tbl[gix].append((gap, 1, "", ""))
rowspan = 1
if isinstance(info, tuple):
cls = { "terminal" }
rowspan = nrows - gix
for i in range(gix + 1, nrows):
# Note the rowspan's effect on subsequent rows
rs[i].append(startcol)
else:
cls = { "nonterminal" }
# Get the 'pure' name of the nonterminal in question
assert isinstance(info, Nonterminal)
info = info.name()
if endcol - startcol == 1:
cls |= { "vertical" }
tbl[gix].append((endcol-startcol, rowspan, info, cls))
col = endcol
ncols_adj = ncols - len(rs[gix])
if col < ncols_adj:
tbl[gix].append((ncols_adj - col, 1, "", ""))
# Calculate the unique path choices available for this parse grid
choices -= { NULL_TUPLE } # Default choice: don't need it in the set
unique_choices = choices.copy()
for c in choices:
# Remove all shorter prefixes of c from the unique_choices set
unique_choices -= { c[0:i] for i in range(1, len(c)) }
# Create a nice string representation of the unique path choices
uc_list = [ "_".join(str(c) for c in choice) for choice in unique_choices ]
if not parse_path:
# We are displaying the longest possible all-zero choice: find it
i = 0
while (0,) * (i + 1) in unique_choices:
i += 1
parse_path = "_".join(["0"] * i)
#debug()
return render_template("parsegrid.html", txt = txt, err = err, tbl = tbl,
combinations = combinations, choice_list = uc_list,
parse_path = parse_path)
def analyze():
""" Analyze text from a given URL """
url = request.form.get("url", "").strip()
t0 = time.time()
if url.startswith("http:") or url.startswith("https:"):
# Scrape the URL, tokenize the text content and return the token list
toklist = list(process_url(url))
else:
# Tokenize the text entered as-is and return the token list
toklist = list(tokenize(url))
tok_time = time.time() - t0
# Count sentences
num_sent = 0
num_parsed_sent = 0
total_ambig = 0.0
total_tokens = 0
sent_begin = 0
bp = BIN_Parser()
t0 = time.time()
for ix, t in enumerate(toklist):
if t[0] == TOK.S_BEGIN:
num_sent += 1
sent = []
sent_begin = ix
elif t[0] == TOK.S_END:
slen = len(sent)
# Parse the accumulated sentence
err_index = None
try:
forest = bp.go(sent)
except ParseError as e:
forest = None
# Obtain the index of the offending token
err_index = e.token_index()
num = 0 if forest is None else Parser.num_combinations(forest)
print("Parsed sentence of length {0} with {1} combinations{2}".format(slen, num,
"\n" + " ".join(s[1] for s in sent) if num >= 100 else ""))
if num > 0:
num_parsed_sent += 1
# Calculate the 'ambiguity factor'
ambig_factor = num ** (1 / slen)
# Do a weighted average on sentence length
total_ambig += ambig_factor * slen
total_tokens += slen
# Mark the sentence beginning with the number of parses
# and the index of the offending token, if an error occurred
toklist[sent_begin] = TOK.Begin_Sentence(num_parses = num, err_index = err_index)
elif t[0] == TOK.P_BEGIN:
pass
elif t[0] == TOK.P_END:
pass
else:
sent.append(t)
parse_time = time.time() - t0
result = dict(
tokens = toklist,
tok_time = tok_time,
tok_num = len(toklist),
parse_time = parse_time,
num_sent = num_sent,
num_parsed_sent = num_parsed_sent,
avg_ambig_factor = (total_ambig / total_tokens) if total_tokens > 0 else 1.0
)
# Dump the tokens to a text file for inspection
# dump_tokens_to_file("txt", toklist)
# Return the tokens as a JSON structure to the client
return jsonify(result = result)
def parse_grid():
""" Show the parse grid for a particular parse tree of a sentence """
MAX_LEVEL = 32 # Maximum level of option depth we can handle
txt = request.form.get('txt', "")
parse_path = request.form.get('option', "")
# Tokenize the text
tokens = list(tokenize(txt))
# Parse the text
bp = BIN_Parser()
err = dict()
try:
forest = bp.go(tokens)
except ParseError as e:
err["msg"] = str(e)
# Relay information about the parser state at the time of the error
err["info"] = e.info()
forest = None
# Find the number of parse combinations
combinations = Parser.num_combinations(forest) if forest else 0
# Make the parse grid with all options
grid, ncols = Parser.make_grid(forest) if forest else ([], 0)
# The grid is columnar; convert it to row-major
# form for convenient translation into HTML
# There will be as many columns as there are tokens
nrows = len(grid)
tbl = [[] for _ in range(nrows)]
# Info about previous row spans
rs = [[] for _ in range(nrows)]
# The particular option path we are displaying
if not parse_path:
# Not specified: display the all-zero path
path = [(0, ) * i for i in range(1, MAX_LEVEL)]
else:
# Disassemble the passed-in path
def toint(s):
""" Safe conversion of string to int """
try:
n = int(s)
except ValueError:
n = 0
return n if n >= 0 else 0
p = [toint(s) for s in parse_path.split("_")]
path = [tuple(p[0:i + 1]) for i in range(len(p))]
# This set will contain all option path choices
choices = set()
NULL_TUPLE = tuple()
for gix, gcol in enumerate(grid):
# gcol is a dictionary of options
# Accumulate the options that we want do display
# according to chosen path
cols = gcol[NULL_TUPLE] if NULL_TUPLE in gcol else [
] # Default content
# Add the options we're displaying
for p in path:
if p in gcol:
cols.extend(gcol[p])
# Accumulate all possible path choices
choices |= gcol.keys()
# Sort the columns that will be displayed
cols.sort(key=lambda x: x[0])
col = 0
for startcol, endcol, info in cols:
assert isinstance(info, Nonterminal) or isinstance(info, tuple)
if col < startcol:
gap = startcol - col
gap -= sum(1 for c in rs[gix] if c < startcol)
if gap > 0:
tbl[gix].append((gap, 1, "", ""))
rowspan = 1
if isinstance(info, tuple):
cls = {"terminal"}
rowspan = nrows - gix
for i in range(gix + 1, nrows):
# Note the rowspan's effect on subsequent rows
rs[i].append(startcol)
else:
cls = {"nonterminal"}
# Get the 'pure' name of the nonterminal in question
assert isinstance(info, Nonterminal)
info = info.name()
if endcol - startcol == 1:
cls |= {"vertical"}
tbl[gix].append((endcol - startcol, rowspan, info, cls))
col = endcol
ncols_adj = ncols - len(rs[gix])
if col < ncols_adj:
tbl[gix].append((ncols_adj - col, 1, "", ""))
# Calculate the unique path choices available for this parse grid
choices -= {NULL_TUPLE} # Default choice: don't need it in the set
unique_choices = choices.copy()
for c in choices:
# Remove all shorter prefixes of c from the unique_choices set
unique_choices -= {c[0:i] for i in range(1, len(c))}
# Create a nice string representation of the unique path choices
uc_list = ["_".join(str(c) for c in choice) for choice in unique_choices]
if not parse_path:
# We are displaying the longest possible all-zero choice: find it
i = 0
while (0, ) * (i + 1) in unique_choices:
i += 1
parse_path = "_".join(["0"] * i)
#debug()
return render_template("parsegrid.html",
txt=txt,
err=err,
tbl=tbl,
combinations=combinations,
choice_list=uc_list,
parse_path=parse_path)
def analyze():
""" Analyze text from a given URL """
url = request.form.get("url", "").strip()
t0 = time.time()
if url.startswith("http:") or url.startswith("https:"):
# Scrape the URL, tokenize the text content and return the token list
toklist = list(process_url(url))
else:
# Tokenize the text entered as-is and return the token list
toklist = list(tokenize(url))
tok_time = time.time() - t0
# Count sentences
num_sent = 0
num_parsed_sent = 0
total_ambig = 0.0
total_tokens = 0
sent_begin = 0
bp = BIN_Parser()
t0 = time.time()
for ix, t in enumerate(toklist):
if t[0] == TOK.S_BEGIN:
num_sent += 1
sent = []
sent_begin = ix
elif t[0] == TOK.S_END:
slen = len(sent)
# Parse the accumulated sentence
err_index = None
try:
forest = bp.go(sent)
except ParseError as e:
forest = None
# Obtain the index of the offending token
err_index = e.token_index()
num = 0 if forest is None else Parser.num_combinations(forest)
print("Parsed sentence of length {0} with {1} combinations{2}".
format(
slen, num,
"\n" + " ".join(s[1]
for s in sent) if num >= 100 else ""))
if num > 0:
num_parsed_sent += 1
# Calculate the 'ambiguity factor'
ambig_factor = num**(1 / slen)
# Do a weighted average on sentence length
total_ambig += ambig_factor * slen
total_tokens += slen
# Mark the sentence beginning with the number of parses
# and the index of the offending token, if an error occurred
toklist[sent_begin] = TOK.Begin_Sentence(num_parses=num,
err_index=err_index)
elif t[0] == TOK.P_BEGIN:
pass
elif t[0] == TOK.P_END:
pass
else:
sent.append(t)
parse_time = time.time() - t0
result = dict(tokens=toklist,
tok_time=tok_time,
tok_num=len(toklist),
parse_time=parse_time,
num_sent=num_sent,
num_parsed_sent=num_parsed_sent,
avg_ambig_factor=(total_ambig /
total_tokens) if total_tokens > 0 else 1.0)
# Dump the tokens to a text file for inspection
# dump_tokens_to_file("txt", toklist)
# Return the tokens as a JSON structure to the client
return jsonify(result=result)
