def on_scan_pressed(self, event):
# Clear output areas
self.output.Clear()
self.source.Clear()
scanner = Scanner_Class()
try:
scanner.read_characters(self.edit.GetValue())
self.source.AppendText(scanner.source())
if self.opt_verbose.GetValue():
for line in scanner.output():
self.output.AppendText(str(line+"\n"))
else:
for line in scanner.tokens():
self.output.AppendText(str(line+"\n"))
self.show_message("Scan completed successfully!")
except Exception as strerror:
self.source.AppendText(scanner.source())
self.show_error('Error: '+str(strerror))
def on_scan_pressed(self, event):
# Clear output areas
self.output.Clear()
self.source.Clear()
self.identifiers.Clear()
scanner = Scanner_Class()
try:
scanner.read_characters(self.edit.GetValue())
self.source.AppendText(scanner.source())
ids = scanner.identifiers()
self.identifiers.AppendText("Identifier\tTimes Used\n")
for v in ids.keys():
self.identifiers.AppendText(v+":\t"+str(ids[v])+"\n")
if self.out_file.GetValue() != '':
try:
file = open(self.out_file.GetValue(), 'w')
if self.opt_verbose.GetValue():
for line in scanner.output():
file.write(str(line)+"\n")
else:
for line in scanner.tokens():
file.write(str(line)+"\n")
file.write("\n\nDiscovered Identifier:Times Used\n")
ids = scanner.identifiers()
for v in ids.keys():
file.write(v+":"+str(ids[v])+"\n")
file.close()
except Exception as strerror:
self.show_error('Error: '+str(strerror))
# Verbose output
if self.opt_verbose.GetValue():
for line in scanner.output():
self.output.AppendText(str(line+"\n"))
# Token only output
else:
for line in scanner.tokens():
self.output.AppendText(str(line+"\n"))
self.show_message("Scan completed successfully!")
except Exception as strerror:
self.source.AppendText(scanner.source())
for line in scanner.output():
self.output.AppendText(str(line+"\n"))
self.show_error('Error: '+str(strerror))
sys.stderr.write("Error: Input file required")
sys.exit(1)
except IndexError:
if nogui:
sys.stderr.write("Error: Input file required")
sys.exit(1)
# GUI mode
if __name__ == "__main__" and not nogui:
app = wxScannerApp()
app.MainLoop()
# Command line mode
else:
scanner = Scanner_Class()
try:
scanner.read_characters(in_file)
except Exception as strerror:
sys.stderr.write("Error: " + str(strerror))
sys.exit(1)
if verbose:
for line in scanner.output():
print line
else:
for line in scanner.tokens():
print line
def parse_file(self, filename):
scanner = Scanner_Class(filename)
self.source_text = scanner.source()
self.clear_messages()
ret = 1
stack = Stack()
stack.push(1)
current_token = scanner.next_token()
while not stack.empty():
# Skip comments
if current_token.type == 8:
current_token = scanner.next_token()
continue
# Map all terminals to an integer
token_number = self.translate(current_token)
# Get head of the stack
stacktop = stack.head.value;
# Stats
self.log("current_token: "+str(current_token.toString()), self.L_DEBUG)
self.log("token_number: "+str(token_number), self.L_DEBUG)
#self.log("stacktop: "+str(stacktop), self.L_DEBUG)
#self.log("stack count: "+str(stack.count()), self.L_DEBUG)
self.log("current stack: "+str(stack.toString()), self.L_DEBUG)
# Non-terminal symbols
if stacktop > 0:
table_entry = self.next_table_entry(stacktop, abs(token_number))
if table_entry == 98:
self.log("Scan error: dropping "+current_token.value, self.L_ERROR)
current_token = scanner.next_token()
elif table_entry == 99:
self.log("Pop Error: popping "+str(stack.head.value), self.L_ERROR)
stack.pop()
elif table_entry <= len(self.stack_pushes):
self.log("Fire "+str(table_entry),
self.L_MATCH)
stack.pop()
for i in self.pushes(table_entry-1):
if i != 0:
stack.push(i)
else:
self.log("Error!", self.L_ERROR)
# Terminals - Match and pop
elif stacktop == token_number:
self.log("Match and pop "+
str(current_token.value), self.L_MATCH)
stack.pop()
current_token = scanner.next_token()
# Terminals - No Match :(
else:
self.log("Error -- Not Accepted", self.L_MATCH)
break;
# Success message
if stack.empty():
self.log("Accept", self.L_MATCH)
ret = 0
# End While
return ret
try:
in_file = sys.argv[len(sys.argv)-1]
if len(sys.argv) == 1:
in_file = "./source.txt"
except IndexError:
in_file = "./source.txt"
# GUI mode
if __name__ == "__main__" and not nogui:
app = wxScannerApp()
app.MainLoop()
# Command line mode
else:
scanner = Scanner_Class()
try:
scanner.read_characters(in_file)
except Exception as strerror:
sys.stderr.write('Error: '+str(strerror))
sys.exit(1)
if verbose:
for line in scanner.output():
print line
else:
for line in scanner.tokens():
print line
