Move pymonkey stuff to monkey/

Importing pymonkey into webmonkey, let's see how this works.

3 files changed, 0 insertions, 381 deletions

diff --git a/prolog/engine.py b/prolog/engine.py
deleted file mode 100644
index dff577c..0000000
--- a/prolog/engine.py
+++ /dev/null
@@ -1,135 +0,0 @@
-#!/usr/bin/python3
-
-import http.client
-import json
-import re
-import urllib
-
-address, port = 'localhost', 3030
-
-class PrologEngine(object):
-    def __init__(self, address=address, port=port, code='', destroy=False, id=None):
-        self.conn = http.client.HTTPConnection(address, port, timeout=10)
-
-        # If existing engine ID is given, use it.
-        if id:
-            self.id = id
-            return
-
-        # Otherwise, create a new engine.
-        hdrs = {'Content-Type': 'application/json;charset=utf-8'}
-        opts = json.dumps({'destroy': destroy, 'src_text': code, 'format': 'json-s'})
-        reply, outputs = self.request('POST', '/pengine/create', body=opts, headers=hdrs)
-
-        failed = (reply['event'] != 'create')
-        warnings = []
-        errors = []
-        for output in outputs:
-            print(output)
-            message = PrologEngine.parse_prolog_output(output)
-            if output['message'] == 'warning':
-                warnings.append(message)
-            elif output['message'] == 'error':
-                failed = True
-                errors.append(message)
-
-        if failed:
-            raise Exception('\n'.join(errors))
-
-        self.id = reply['id']
-
-    def send(self, event):
-        params = urllib.parse.urlencode({
-            'id': self.id,
-            'event': event,
-            'format': 'json-s'})
-        reply, outputs = self.request('GET', '/pengine/send?' + params)
-        return reply
-
-    def ask(self, query):
-        event = 'ask(({}),[])'.format(query)
-        reply = self.send(event)
-        return reply
-
-    def next(self, n=1):
-        event = 'next({})'.format(n)
-        reply = self.send(event)
-        return reply
-
-    def stop(self):
-        return self.send('stop')
-
-    def destroy(self):
-        reply = self.send('destroy')
-        self.id = None
-        self.conn.close()
-        self.conn = None
-
-    # Return the main reply and possible output replies.
-    def request(self, method, path, body=None, headers={}):
-        self.conn.request(method, path, body, headers)
-        outputs = []
-        while True:
-            response = self.conn.getresponse()
-            if response.status != http.client.OK:
-                raise Exception('server returned {}'.format(response.status))
-            reply = json.loads(response.read().decode('utf-8'))
-            self.id = reply['id']
-            if reply['event'] == 'output':
-                outputs.append(reply)
-                params = urllib.parse.urlencode({
-                    'id': self.id,
-                    'format': 'json-s'})
-                self.conn.request('GET', '/pengine/pull_response?' + params)
-            else:
-                return reply, outputs
-
-    # Check if output is an error message and return a prettified version of it.
-    def parse_prolog_output(output):
-        match = re.match(r'.*<pre class="[^"]*">(.*)</pre>.*',
-                         output['data'], flags=re.DOTALL)
-        data = match.group(1).strip()
-        message = ''
-        if output['message'] == 'error':
-            if 'location' in output:
-                loc = output['location']
-                message += 'near line ' + str(loc['line'])
-                if 'ch' in loc:
-                    message += ', character ' + str(loc['ch'])
-                message += ': '
-
-            if output.get('code') == 'syntax_error':
-                match = re.match(r'^.*Syntax error: (.*)$', data, flags=re.DOTALL)
-                message += match.group(1)
-            elif output.get('code') == 'permission_error':
-                match = re.match(r'^.*(No permission [^\n]*)', data, flags=re.DOTALL)
-                message += match.group(1)
-            elif output.get('code') == 'type_error':
-                match = re.match(r'^.*(Type error: [^\n]*)', data, flags=re.DOTALL)
-                message += match.group(1)
-            else:
-                message += data
-
-        # Replace anonymous variable names with _.
-        message = re.sub(r'_G[0-9]*', '_', message)
-        return message
-
-def test(name, code):
-    engine = PrologEngine(code=code)
-    reply = engine.ask("run_tests({}, '{}', Results)".format(name, engine.id))
-    engine.destroy()
-
-    if reply['event'] != 'success':
-        raise Exception('testing procedure failed')
-
-    results = re.findall(r'(?:success|failure)\([^)]*\)', reply['data'][0]['Results'])
-    n_total = len(results)
-    n_passed = len([r for r in results if r.startswith('success')])
-    return (n_passed, n_total)
-
-# Basic sanity check.
-if __name__ == '__main__':
-    engine = PrologEngine(code='dup([],[]). dup([H|T],[H,H|TT]) :- dup(T,TT).')
-    print('engine id is ' + engine.id)
-    print(engine.ask("run_tests({},'{}',Result)".format('dup/2', engine.id)))
-    engine.destroy()
diff --git a/prolog/lexer.py b/prolog/lexer.py
deleted file mode 100644
index 971e8a6..0000000
--- a/prolog/lexer.py
+++ /dev/null
@@ -1,90 +0,0 @@
-#!/usr/bin/python3
-
-import ply.lex as lex
-
-# LEXER
-
-#states = (
-#    ('comment', 'exclusive'),
-#)
-
-# tokens; treat operators as names if followed by (
-operators = {
-    r':-':  'FROM',
-    r'->':  'IMPLIES',
-    r'\+':  'NOT',
-    r'not': 'NOT',
-    r'=':   'EQU',
-    r'\=':  'NEQU',
-    r'==':  'EQ',
-    r'\==': 'NEQ',
-    r'=..': 'UNIV',
-    r'is':  'IS',
-    r'=:=': 'EQA',
-    r'=\=': 'NEQA',
-    r'<':   'LT',
-    r'=<':  'LE',
-    r'>':   'GT',
-    r'>=':  'GE',
-    r'@<':  'LTL',
-    r'@=<': 'LEL',
-    r'@>':  'GTL',
-    r'@>=': 'GEL',
-    r'+':   'PLUS',
-    r'-':   'MINUS',
-    r'*':   'STAR',
-    r'/':   'DIV',
-    r'//':  'IDIV',
-    r'mod': 'MOD',
-    r'**':  'POW',
-    r'.':   'PERIOD',
-    r',':   'COMMA',
-    r';':   'SEMI'
-}
-tokens = list(operators.values()) + [
-    'UINTEGER', 'UREAL',
-    'NAME', 'VARIABLE', 'STRING',
-    'LBRACKET', 'RBRACKET', 'LPAREN', 'RPAREN', 'PIPE', 'LBRACE', 'RBRACE',
-    'INVALID'
-]
-
-# punctuation
-t_LBRACKET = r'\['
-t_RBRACKET = r'\]'
-t_LPAREN = r'\('
-t_RPAREN = r'\)'
-t_PIPE = r'\|'
-t_LBRACE = r'{'
-t_RBRACE = r'}'
-
-t_UINTEGER = r'[0-9]+'
-t_UREAL    = r'[0-9]+\.[0-9]+([eE][-+]?[0-9]+)?|inf|nan'
-t_VARIABLE = r'(_|[A-Z])[a-zA-Z0-9_]*'
-t_STRING   = r'"(""|\\.|[^\"])*"'
-
-# no support for nested comments yet
-def t_comment(t):
-    r'(/\*(.|\n)*?\*/)|(%.*)'
-    pass
-
-def t_NAME(t):
-    r"'(''|\\.|[^\\'])*'|[a-z][a-zA-Z0-9_]*|[-+*/\\^<>=~:.?@#$&]+|!|;|,"
-    if t.lexer.lexpos >= len(t.lexer.lexdata) or t.lexer.lexdata[t.lexer.lexpos] != '(':
-        t.type = operators.get(t.value, 'NAME')
-    return t
-
-t_ignore  = ' \t'
-
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += len(t.value)
-
-def t_error(t):
-    # TODO send this to stderr
-    #print("Illegal character '" + t.value[0] + "'")
-    t.type = 'INVALID'
-    t.value = t.value[0]
-    t.lexer.skip(1)
-    return t
-
-lexer = lex.lex()
diff --git a/prolog/util.py b/prolog/util.py
deleted file mode 100644
index 0ab3c8b..0000000
--- a/prolog/util.py
+++ /dev/null
@@ -1,156 +0,0 @@
-#!/usr/bin/python3
-
-import itertools
-import math
-import re
-
-from .lexer import lexer
-from util import Token
-
-def tokenize(text):
-    lexer.input(text)
-    return [Token(t.type, t.value, t.lexpos) for t in lexer]
-
-operators = set([
-    'FROM', 'IMPLIES', 'NOT',
-    'EQU', 'NEQU', 'EQ', 'NEQ', 'UNIV', 'IS', 'EQA', 'NEQA',
-    'LT', 'LE', 'GT', 'GE', 'LTL', 'LEL', 'GTL', 'GEL',
-    'PLUS', 'MINUS', 'STAR', 'DIV', 'IDIV', 'MOD',
-    'POW', 'SEMI'
-])
-def stringify(tokens):
-    def token_str(t):
-        if t.type in ('PERIOD', 'COMMA'):
-            return str(t) + ' '
-        if t.type in operators:
-            return ' ' + str(t) + ' '
-        return str(t)
-    return ''.join(map(token_str, tokens))
-
-# Yield the sequence of rules in [code].
-def split(code):
-    tokens = tokenize(code)
-    start = 0
-    for idx, token in enumerate(tokens):
-        if token.type == 'PERIOD' and idx - start > 1:
-            yield stringify(tokens[start:idx])
-            start = idx + 1
-
-# return a list of lines in 'code', and a list of rule indexes
-def decompose(code):
-    lines = []
-    rules = []
-    tokens = tokenize(code)
-    tokens.append(Token('EOF'))
-
-    line = []
-    parens = []
-    rule_start = 0
-    for t in tokens:
-        if t.type == 'SEMI':
-            if line != []:
-                lines.append(tuple(line))
-                line = []
-            lines.append((t,))
-            continue
-        if not parens:
-            if t.type in ('PERIOD', 'FROM', 'COMMA', 'EOF'):
-                if line != []:
-                    lines.append(tuple(line))
-                    line = []
-                if t.type in ('PERIOD', 'EOF') and rule_start < len(lines):
-                    rules.append((rule_start, len(lines)))
-                    rule_start = len(lines)
-                continue
-        if t.type in ('LPAREN', 'LBRACKET', 'LBRACE'):
-            parens.append(t.type)
-        elif parens:
-            if t.type == 'RPAREN' and parens[-1] == 'LPAREN':
-                parens.pop()
-            elif t.type == 'RBRACKET' and parens[-1] == 'LBRACKET':
-                parens.pop()
-            elif t.type == 'RBRACE' and parens[-1] == 'LBRACE':
-                parens.pop()
-        line.append(t)
-    return tuple(lines), tuple(rules)
-
-# pretty-print a list of rules
-def compose(lines, rules):
-    code = ''
-    for start, end in rules:
-        for i in range(start, end):
-            line = lines[i]
-            if i > start:
-                code += '  '
-            code += stringify(line)
-            if i == end-1:
-                code += '.\n'
-            elif i == start:
-                code += ' :-\n'
-            else:
-                if line and line[-1].type != 'SEMI' and lines[i+1][-1].type != 'SEMI':
-                    code += ','
-                code += '\n'
-    return code.strip()
-
-# standardize variable names in order of appearance
-def rename_vars(tokens, names={}):
-    # copy names so we don't fuck it up
-    names = {k: v for k, v in names.items()}
-    next_id = len(names)
-    for i in range(len(tokens)):
-        if tokens[i].type == 'PERIOD':
-            names.clear()
-            next_id = 0
-        elif tokens[i] == Token('VARIABLE', '_'):
-            tokens[i] = Token('VARIABLE', 'A' + str(next_id))
-            next_id += 1
-        elif tokens[i].type == 'VARIABLE':
-            cur_name = tokens[i].val
-            if cur_name not in names:
-                names[cur_name] = next_id
-                next_id += 1
-            tokens[i] = Token('VARIABLE', 'A' + str(names[cur_name]))
-    return names
-
-# transformation = before → after; applied on line which is part of rule
-# return mapping from formal vars in before+after to actual vars in rule
-# line and rule should of course not be normalized
-def map_vars(before, after, line, rule):
-    mapping = {}
-    new_index = 0
-    for i in range(len(before)):
-        if line[i].type == 'VARIABLE':
-            formal_name = before[i].val
-            if line[i].val != '_':
-                actual_name = line[i].val
-            else:
-                actual_name = 'New'+str(new_index)
-                new_index += 1
-            mapping[formal_name] = actual_name
-
-    remaining_formal = [t.val for t in after if t.type == 'VARIABLE' and t.val not in mapping.keys()]
-    remaining_actual = [t.val for t in rule if t.type == 'VARIABLE' and t.val != '_' and t.val not in mapping.values()]
-
-    while len(remaining_actual) < len(remaining_formal):
-        remaining_actual.append('New'+str(new_index))
-        new_index += 1
-
-    for i, formal_name in enumerate(remaining_formal):
-        mapping[formal_name] = remaining_actual[i]
-
-    return mapping
-
-# Basic sanity check.
-if __name__ == '__main__':
-    print(compose(*decompose('dup([H|T], [H1|T1]) :- dup(T1, T2). ')))
-
-    rule = tokenize('dup([H|T], [H1|T1]) :- dup(T1, T2). ')
-    line = tokenize('dup([H|T], [H1|T1]) :-')
-    before = tokenize("dup([A0|A1], [A2|A3])")
-    after = tokenize("dup([A0|A1], [A5, A4|A3])")
-    var_names = rename_vars(before)
-    rename_vars(after, var_names)
-
-    mapping = map_vars(before, after, line, rule)
-    print(mapping)