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comparison test/testpyy.py @ 319:8d07a4254f04

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Work on burg
author Windel Bouwman
date Sat, 18 Jan 2014 18:58:43 +0100
parents e84047f29c78
children 4d204f6f7d4e
comparison
equal deleted inserted replaced
318:e84047f29c78 319:8d07a4254f04
1 import unittest 1 import unittest
2 from pyyacc import Grammar, Item, ParserGenerationException, ParserException 2 from pyyacc import Grammar, Item, ParserGenerationException, ParserException
3 from pyyacc import EPS, EOF 3 from pyyacc import EPS, EOF, calculate_first_sets
4 from ppci import Token 4 from ppci import Token
5 5
6 6
7 class genTokens: 7 class genTokens:
8 def __init__(self, lst): 8 def __init__(self, lst):
121 tokens = genTokens(['id', ':', 'id', 'id']) # i.e. "lab_0: inc rax" 121 tokens = genTokens(['id', ':', 'id', 'id']) # i.e. "lab_0: inc rax"
122 p.parse(tokens) 122 p.parse(tokens)
123 tokens = genTokens(['id', 'id']) # i.e. "inc rax" 123 tokens = genTokens(['id', 'id']) # i.e. "inc rax"
124 p.parse(tokens) 124 p.parse(tokens)
125 125
126 def testEpsSequence(self):
127 """ Test epsilon terminal for use in sequences """
128 g = Grammar(['a'])
129 g.add_production('aas', [])
130 g.add_production('aas', ['aas', 'a'])
131 g.start_symbol = 'aas'
132 p = g.genParser()
133 tokens = genTokens(['a', 'a', 'a'])
134 p.parse(tokens)
135 tokens = genTokens([])
136 p.parse(tokens)
137
126 def test_cb(self): 138 def test_cb(self):
127 """ Test callback of one rule and order or parameters """ 139 """ Test callback of one rule and order or parameters """
128 self.cb_called = False 140 self.cb_called = False
129 def cb(a, c, b): 141 def cb(a, c, b):
130 self.cb_called = True 142 self.cb_called = True
154 g.start_symbol = 'input' 166 g.start_symbol = 'input'
155 self.g = g 167 self.g = g
156 168
157 def testFirstSimpleGrammar(self): 169 def testFirstSimpleGrammar(self):
158 # 1. define a simple grammar: 170 # 1. define a simple grammar:
159 first = self.g.calcFirstSets() 171 first = calculate_first_sets(self.g)
160 self.assertEqual(first['input'], {'identifier', '(', 'num'}) 172 self.assertEqual(first['input'], {'identifier', '(', 'num'})
161 self.assertEqual(first['term'], {'identifier', '(', 'num'}) 173 self.assertEqual(first['term'], {'identifier', '(', 'num'})
162 174
163 def testCanonical(self): 175 def testCanonical(self):
164 s0 = self.g.initialItemSet() 176 s0 = self.g.initialItemSet()