diff options
Diffstat (limited to 'exyapps/parsetree.py')
| -rw-r--r-- | exyapps/parsetree.py | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/exyapps/parsetree.py b/exyapps/parsetree.py index 964a74e..a709314 100644 --- a/exyapps/parsetree.py +++ b/exyapps/parsetree.py @@ -63,7 +63,7 @@ class Generator: n = t self.ignore[n] = s if n in self.tokens.keys() and self.tokens[n] != t: - print >>sys.stderr, 'Warning: token %s defined more than once.' % n + print('Warning: token %s defined more than once.' % n, file=sys.stderr) self.tokens[n] = t self.terminals.append(n) @@ -259,20 +259,20 @@ class Generator: """Display the grammar in somewhat human-readable form.""" self.calculate() for r in self.goals: - print ' _____' + '_'*len(r) - print ('___/Rule '+r+'\\' + '_'*80)[:79] + print(' _____' + '_'*len(r)) + print(('___/Rule '+r+'\\' + '_'*80)[:79]) queue = [self.rules[r]] while queue: top = queue[0] del queue[0] - print 'Rule', repr(top), 'of class', top.__class__.__name__ + print('Rule', repr(top), 'of class', top.__class__.__name__) top.first.sort() top.follow.sort() eps = [] if top.accepts_epsilon: eps = ['(null)'] - print ' FIRST:', ', '.join(top.first+eps) - print ' FOLLOW:', ', '.join(top.follow) + print(' FIRST:', ', '.join(top.first+eps)) + print(' FOLLOW:', ', '.join(top.follow)) for x in top.get_children(): queue.append(x) def repr_ignore(self): @@ -428,7 +428,7 @@ class NonTerminal(Node): self.accepts_epsilon = self.target.accepts_epsilon gen.changed() except KeyError: # Oops, it's nonexistent - print >>sys.stderr, 'Error: no rule <%s>' % self.name + print('Error: no rule <%s>' % self.name, file=sys.stderr) self.target = self def __str__(self): @@ -556,12 +556,12 @@ class Choice(Node): tokens_seen = tokens_seen + testset if removed: if not testset: - print >>sys.stderr, 'Error in rule', self.rule+':' + print('Error in rule', self.rule+':', file=sys.stderr) else: - print >>sys.stderr, 'Warning in rule', self.rule+':' - print >>sys.stderr, ' *', self - print >>sys.stderr, ' * These tokens could be matched by more than one clause:' - print >>sys.stderr, ' *', ' '.join(removed) + print('Warning in rule', self.rule+':', file=sys.stderr) + print(' *', self, file=sys.stderr) + print(' * These tokens could be matched by more than one clause:', file=sys.stderr) + print(' *', ' '.join(removed), file=sys.stderr) if testset: if not tokens_unseen: # context sensitive scanners only! @@ -620,7 +620,7 @@ class Option(Wrapper): def output(self, gen, indent): if self.child.accepts_epsilon: - print >>sys.stderr, 'Warning in rule', self.rule+': contents may be empty.' + print('Warning in rule', self.rule+': contents may be empty.', file=sys.stderr) gen.write(indent, "if %s:\n" % gen.peek_test(self.first, self.child.first)) self.child.output(gen, indent+INDENT) @@ -649,8 +649,8 @@ class Plus(Wrapper): def output(self, gen, indent): if self.child.accepts_epsilon: - print >>sys.stderr, 'Warning in rule', self.rule+':' - print >>sys.stderr, ' * The repeated pattern could be empty. The resulting parser may not work properly.' + print('Warning in rule', self.rule+':', file=sys.stderr) + print(' * The repeated pattern could be empty. The resulting parser may not work properly.', file=sys.stderr) gen.write(indent, "while 1:\n") self.child.output(gen, indent+INDENT) union = self.first[:] @@ -682,8 +682,8 @@ class Star(Wrapper): def output(self, gen, indent): if self.child.accepts_epsilon: - print >>sys.stderr, 'Warning in rule', self.rule+':' - print >>sys.stderr, ' * The repeated pattern could be empty. The resulting parser probably will not work properly.' + print('Warning in rule', self.rule+':', file=sys.stderr) + print(' * The repeated pattern could be empty. The resulting parser probably will not work properly.', file=sys.stderr) gen.write(indent, "while %s:\n" % gen.peek_test(self.follow, self.child.first)) self.child.output(gen, indent+INDENT) |