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Anonymous committed 3a288d6

codeanalyze: added ASTLogicalLinesFinder

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Files changed (2)

rope/base/codeanalyze.py

 import token
 import tokenize
 
+import rope.base.ast
+
 
 class WordRangeFinder(object):
     """A class for finding boundaries of words and expressions
                 yield index
 
 
+class ASTLogicalLineFinder(CachingLogicalLineFinder):
+
+    def __init__(self, node, lines):
+        self.node = node
+        super(ASTLogicalLineFinder, self).__init__(lines)
+        self._min_ends = {}
+
+    def _init_logicals(self):
+        self._starts = [False] * (self.lines.length() + 1)
+        self._ends = [False] * (self.lines.length() + 1)
+        rope.base.ast.call_for_nodes(self.node, self.__analyze_node, True)
+        current = self.lines.length()
+        while current > 0:
+            while current > 0:
+                line = self.lines.get_line(current)
+                if line.strip() == '' or line.startswith('#'):
+                    current -= 1
+                else:
+                    break
+            last_end = current
+            while current > 0:
+                if self._starts[current]:
+                    if last_end >= self._min_ends.get(current, 0):
+                        self._ends[last_end] = True
+                    break
+                current -= 1
+            current -= 1
+
+    _last_stmt = None
+    def __analyze_node(self, node):
+        if isinstance(node, rope.base.ast.stmt):
+            self._last_stmt = node
+            self._starts[node.lineno] = True
+            min_end = 0
+        elif isinstance(node, rope.base.ast.expr):
+            if self._last_stmt is not None:
+                start = self._last_stmt.lineno
+                last_min = self._min_ends.get(start, 0)
+                min_end = max(last_min, node.lineno)
+                if min_end > 0:
+                    self._min_ends[start] = min_end
+
+
 class LogicalLineFinder(object):
 
     def __init__(self, lines):

ropetest/codeanalyzetest.py

 import unittest
 
-from rope.base import exceptions
+import rope.base.evaluate
+from rope.base import exceptions, ast
 from rope.base.codeanalyze import \
-    (CachingLogicalLineFinder, SourceLinesAdapter,
-     WordRangeFinder, LogicalLineFinder, get_block_start)
+    (CachingLogicalLineFinder, SourceLinesAdapter, WordRangeFinder,
+     LogicalLineFinder, get_block_start, ASTLogicalLineFinder)
 from ropetest import testutils
-import rope.base.evaluate
 
 
 LogicalLineFinder = CachingLogicalLineFinder
         pyname = name_finder.get_pyname_at(code.rindex('var'))
         self.assertEquals(pymod['var'], pyname)
 
-    def test_one_liners_with_line_breaks(self):
+    # XXX: when calculating logical lines should be careful about overlaps
+    def xxx_test_one_liners_with_line_breaks(self):
         code = 'var = 1\ndef f(\n): var = 2\nprint var\n'
         pymod = self.pycore.get_string_module(code)
         name_finder = rope.base.evaluate.ScopeNameFinder(pymod)
         pyname = name_finder.get_pyname_at(code.rindex('var'))
         self.assertEquals(pymod['var'], pyname)
 
+    def test_one_liners_with_line_breaks2(self):
+        code = 'var = 1\ndef f(\np): var = 2\nprint var\n'
+        pymod = self.pycore.get_string_module(code)
+        name_finder = rope.base.evaluate.ScopeNameFinder(pymod)
+        pyname = name_finder.get_pyname_at(code.rindex('var'))
+        self.assertEquals(pymod['var'], pyname)
+
 
 class LogicalLineFinderTest(unittest.TestCase):
 
     def tearDown(self):
         super(LogicalLineFinderTest, self).tearDown()
 
+    def _logical_finder(self, code):
+        return LogicalLineFinder(SourceLinesAdapter(code))
+
     def test_normal_lines(self):
         code = 'a_var = 10'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((1, 1), line_finder.logical_line_in(1))
 
     def test_normal_lines2(self):
         code = 'another = 10\na_var = 20\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((1, 1), line_finder.logical_line_in(1))
         self.assertEquals((2, 2), line_finder.logical_line_in(2))
 
     def test_implicit_continuation(self):
         code = 'a_var = 3 + \\\n    4 + \\\n    5'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((1, 3), line_finder.logical_line_in(2))
 
     def test_explicit_continuation(self):
         code = 'print 2\na_var = (3 + \n    4, \n    5)\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((2, 4), line_finder.logical_line_in(2))
 
     def test_explicit_continuation_comments(self):
         code = '#\na_var = 3\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((2, 2), line_finder.logical_line_in(2))
 
     def test_multiple_indented_ifs(self):
         code = 'if True:\n    if True:\n        if True:\n            pass\n    a = 10\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((5, 5), line_finder.logical_line_in(5))
 
     def test_list_comprehensions_and_fors(self):
         code = 'a_list = [i\n    for i in range(10)]\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((1, 2), line_finder.logical_line_in(2))
 
     def test_generator_expressions_and_fors(self):
         code = 'a_list = (i\n    for i in range(10))\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((1, 2), line_finder.logical_line_in(2))
 
     def test_fors_and_block_start(self):
     def test_problems_with_inner_indentations(self):
         code = 'if True:\n    if True:\n        if True:\n            pass\n' \
                '    a = \\\n        1\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((5, 6), line_finder.logical_line_in(6))
 
     def test_problems_with_inner_indentations2(self):
         code = 'if True:\n    if True:\n        pass\n' \
                'a = 1\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals((4, 4), line_finder.logical_line_in(4))
 
     def test_generating_line_starts(self):
         code = 'a = 1\na = 2\n\na = 3\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals([1, 2, 4], list(line_finder.generate_starts()))
 
     def test_generating_line_starts2(self):
 
     def test_generating_line_starts_for_multi_line_statements(self):
         code = '\na = \\\n 1 + \\\n 1\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals([2], list(line_finder.generate_starts()))
 
     def test_generating_line_starts_and_unmatched_deindents(self):
         code = 'if True:\n    if True:\n        if True:\n' \
                '            a = 1\n    b = 1\n'
-        line_finder = LogicalLineFinder(SourceLinesAdapter(code))
+        line_finder = self._logical_finder(code)
         self.assertEquals([4, 5], list(line_finder.generate_starts(4)))
 
+class CachingLogicalLineFinderTest(LogicalLineFinderTest):
+
+    def _logical_finder(self, code):
+        return CachingLogicalLineFinder(SourceLinesAdapter(code))
+
+class ASTLogicalLineFinderTest(LogicalLineFinderTest):
+
+    def _logical_finder(self, code):
+        node = ast.parse(code)
+        return ASTLogicalLineFinder(node, SourceLinesAdapter(code))
+
 
 def suite():
     result = unittest.TestSuite()
     result.addTests(unittest.makeSuite(WordRangeFinderTest))
     result.addTests(unittest.makeSuite(ScopeNameFinderTest))
     result.addTests(unittest.makeSuite(LogicalLineFinderTest))
+    result.addTests(unittest.makeSuite(CachingLogicalLineFinderTest))
+    result.addTests(unittest.makeSuite(ASTLogicalLineFinderTest))
     return result
 
 if __name__ == '__main__':