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How to use get_symbol_table method in lisa
Best Python code snippet using lisa_python
lexical_scope_symbol_table.py
Source:lexical_scope_symbol_table.py 
...36 """37 Returns the offset of the direct parent scope38 """39 return self.upper_scope_offset40 def get_symbol_table(self):41 """42 Returns the collection of symbols43 """44 return self.symbols45 def set_upper_scope_offset(self, offset):46 """47 Sets the direct parent scope offset48 """49 self.upper_scope_offset = offset50 def set_offset_scope(self, offset):51 """52 Sets the current scope offset53 """54 self.offset_scope = offset55 def set_symbol_table(self, symbol_table):56 """57 Sets the value of the symbol table58 """59 self.symbols = symbol_table60class LexicalScopeSymbolTable(object):61 """62 Contains the implementation of the tracking of symbols and their values per scope level63 """64 level_scope = list(list())65 current_level = 066 def __init__(self):67 self.initialize_scope()68 def debug_level(self):69 """70 Prints the number of scope level and prints the number of symbols per scope71 """72 print "DEBUG_LEVEL: Number of level => " + str(self.get_size_level())73 for scope_collection in self.level_scope:74 print "Debug_level: " + str(len(scope_collection))75 def dump_level(self, level):76 """77 Prints the content of each scope level78 """79 collection_scope = self.level_scope[level]80 print "#" * 35 + "Dump_Level" + "#" * 3581 for scope_offset in collection_scope:82 symbol_table = scope_offset.get_symbol_table()83 i = scope_offset.get_offset_scope()84 for k, value in symbol_table.iteritems():85 print "Scope(%s:%s) -> id: %s, value=%s, addr=%s, addr_table=%s"\86 % (str(level), str(i), str(k)87 , str(value.n), str(value), str(hex(id(symbol_table))))88 def add_new_scope(self):89 """90 Creates and append a new scope to the current level of the EntrySymbolTable91 A scope contains:92 offset: offset of the new scope93 upper_scope: level of the direct parent scope94 dictionnary: contains symbol as key associated with a value95 """96 # upper_offset = self.get_offset_last_dominant()97 self.level_scope.append([EntrySymbolTable(self.current_level, -1, -1, dict())])98 addr_table = hex(id(self.level_scope[self.current_level][-1].get_symbol_table()))99 print "Add_new_scope: %s:%s - addr_table=%s" % ("x", "x", addr_table)100 def add_new_offset(self, index_level):101 """102 Adds an offset of a scope level103 """104 # offset = len(self.level_scope[index_level])105 self.level_scope[index_level].append(EntrySymbolTable(index_level, -1, -1, dict()))106 addr_table = hex(id(self.level_scope[self.current_level][-1].get_symbol_table()))107 print "Add_new_offset: %s:%s - addr_table=%s" % ("x", "x", addr_table)108 def set_offset_new_scope(self):109 """110 Sets the direct parent offset and the current offset of a scope level111 """112 # offset = -1113 upper_offset = self.get_offset_last_dominant()114 if self.get_offset_current_level() == -1:115 offset = self.get_size_offset(self.get_current_level()) - 1116 else:117 offset = self.level_scope[self.get_current_level()][-1].get_offset_scope() + 1118 self.level_scope[self.get_current_level()][-1].set_offset_scope(offset)119 self.level_scope[self.get_current_level()][-1].set_upper_scope_offset(upper_offset)120 def initialize_scope(self):121 """122 Initialize a scope123 """124 index_level = self.get_current_level()125 if index_level >= self.get_size_level():126 self.add_new_scope()127 else:128 self.add_new_offset(index_level)129 # upper_offset = self.get_offset_last_dominant()130 current_offset = self.get_offset_current_level()131 self.set_offset_new_scope()132 self.print_scope_initialization(current_offset)133 self.current_level += 1134 def bind_symbol(self, symbol, value, index_level, offset):135 """136 Sets the state of a symbol, according to its scope level137 """138 symbol_table = self.get_symbol_table(index_level, offset)139 symbol_table[symbol] = value140 print "Bind_scope: %s:%s - addr_table=%s" \141 % (str(index_level), offset, str(hex(id(symbol_table))))142 def lookup_symbol(self, symbol):143 """144 Returns the value associated to a symbol145 """146 index_level = self.get_current_level() - 1147 if index_level < 0:148 print "ERROR(lexicalScopeSymbolTable.lookup_symbol): index level must be positive"149 return None150 offset = self.get_offset_by_level(index_level)151 symbol_table = self.get_symbol_table(index_level, offset)152 if symbol in symbol_table.keys():153 value = symbol_table[symbol]154 return value155 print "Lookup_symbol: Not found - " + str(symbol)156 return self.lookup_dominant_scope(symbol, index_level, offset)157 def lookup_dominant_scope(self, symbol, index_level, offset):158 """159 Returns the value of a symbol of a direct dominant scope160 """161 dominant_level = index_level - 1162 upper_offset = self.level_scope[index_level][offset].get_upper_offset()163 if self.level_scope[dominant_level][upper_offset]:164 symbol_table = self.get_symbol_table(dominant_level, upper_offset)165 if symbol in symbol_table.keys():166 print "Lookup_dominant_scope: found %s=%s" \167 % (symbol, symbol_table[symbol])168 return symbol_table[symbol]169 print "Lookup_dominant_scope: Not found - %s; upper_level=%s, upper_offset=%s" \170 % (str(symbol), dominant_level, upper_offset)171 return None172 def finalize_scope(self):173 """174 Close a scope level, decrement the current level175 """176 self.current_level -= 1177 print "===== -> Finalize Scope %s =====" % (str(self.current_level))178 def get_offset_last_dominant(self):179 """180 Returns the offset of the last dominant scope181 """182 if self.get_current_level() == 0:183 return 0184 return self.level_scope[self.get_current_level() - 1][-1].get_offset_scope()185 def get_last_offset_level(self, index_level):186 """187 Returns the last valid offset of a specific scope188 """189 return len(self.level_scope[index_level]) - 1190 def get_offset_current_level(self):191 """192 Returns the offset of the current level193 """194 return self.level_scope[self.current_level][-1].get_offset_scope()195 def get_offset_by_level(self, index_level):196 """197 Returns the offset of a specified level198 """199 return self.level_scope[index_level][-1].get_offset_scope()200 def get_size_offset(self, index_level):201 """202 Returns the number of symbol in a specified scope level203 """204 return len(self.level_scope[index_level])205 def get_last_offset(self, index_level):206 """207 Returns the last valid offset of a scope level208 """209 return self.level_scope[index_level][-1].get_offset_scope()210 def get_size_level(self):211 """212 Returns the size of level_scope213 """214 return len(self.level_scope)215 def get_scope(self, offset):216 """217 Returns a scope by offset218 """219 return self.level_scope[self.get_current_level()][offset]220 def get_current_level(self):221 """222 Returns the value of the current scope level223 """224 return self.current_level225 def get_symbol_table(self, index_level, offset):226 """227 Returns the symbol table228 """229 symbol_table = self.level_scope[index_level][offset].get_symbol_table()230 print "Get_symbol_table(Scope %s:%s)" % (str(index_level), offset)231 return symbol_table232 def print_scope_initialization(self, offset):233 """234 Prints debug informations:235 - current_level: current scope level236 - offset: current scope offset237 - upper_offset: direct parent scope offset238 """239 print "===== -> Initialize Scope %s:%s - %s ====="\240 % (str(self.current_level)241 , self.get_scope(offset).get_offset_scope()...
stack.py
Source:stack.py
...32 # the implementation of chain map does things this way33 yield from set().union(self.locals, self.globals)34 def __len__(self):35 return len(set().union(self.locals, self.globals))36def get_symbol_table(37 decorators: tp.Optional[tp.Sequence[inspect.FrameInfo]] = None,38 copy_locals: bool = False39 ) -> SymbolTable:40 exec(_SKIP_FRAME_DEBUG_STMT)41 locals = ChainMap()42 globals = ChainMap()43 if decorators is None:44 decorators = set()45 else:46 decorators = {f.__code__ for f in decorators}47 decorators.add(get_symbol_table.__code__)48 stack = inspect.stack()49 for i in range(len(stack) - 1, 0, -1):50 frame = stack[i]51 if frame.frame.f_code in decorators:52 continue53 debug_check = frame.frame.f_locals.get(_SKIP_FRAME_DEBUG_NAME, None)54 if debug_check == _SKIP_FRAME_DEBUG_VALUE:55 if _SKIP_FRAME_DEBUG_FAIL:56 raise RuntimeError(f'{frame.function} @ {frame.filename}:{frame.lineno} might be leaking names')57 else:58 logging.debug(f'{frame.function} @ {frame.filename}:{frame.lineno} might be leaking names')59 f_locals = stack[i].frame.f_locals60 if copy_locals:61 f_locals = copy.copy(f_locals)62 locals = locals.new_child(f_locals)63 globals = globals.new_child(stack[i].frame.f_globals)64 return SymbolTable(locals=locals, globals=dict(globals))65def inspect_symbol_table(66 fn: tp.Callable, # tp.Callable[[SymbolTable, ...], tp.Any],67 *,68 decorators: tp.Optional[tp.Sequence[inspect.FrameInfo]] = None,69 ) -> tp.Callable:70 exec(_SKIP_FRAME_DEBUG_STMT)71 if decorators is None:72 decorators = ()73 @functools.wraps(fn)74 def wrapped_0(*args, **kwargs):75 exec(_SKIP_FRAME_DEBUG_STMT)76 st = get_symbol_table(list(itertools.chain(decorators, [wrapped_0])))77 return fn(st, *args, **kwargs)78 return wrapped_079# mostly equivelent to magma.ast_utils.inspect_enclosing_env80def inspect_enclosing_env(81 fn: tp.Callable, # tp.Callable[[tp.Dict[str, tp.Any], ...], tp.Any],82 *,83 decorators: tp.Optional[tp.Sequence[inspect.FrameInfo]] = None,84 st: tp.Optional[SymbolTable] = None) -> tp.Callable:85 exec(_SKIP_FRAME_DEBUG_STMT)86 if decorators is None:87 decorators = ()88 @functools.wraps(fn)89 def wrapped_0(*args, **kwargs):90 exec(_SKIP_FRAME_DEBUG_STMT)91 _st = get_symbol_table(list(itertools.chain(decorators, [wrapped_0])))92 if st is not None:93 _st.locals.update(st)94 env = dict(_st.globals)95 env.update(_st.locals)96 return fn(env, *args, **kwargs)...
test_stack.py
Source:test_stack.py
1import pytest2from ast_tools import stack3MAGIC = 'foo'4def test_get_symbol_table():5 MAGIC = 'bar'6 st = stack.get_symbol_table()7 assert st.globals['MAGIC'] == 'foo'8 assert st.locals['MAGIC'] == 'bar'9def test_inspect_symbol_table():10 MAGIC = 'bar'11 @stack.inspect_symbol_table12 def test(st):13 assert st.globals['MAGIC'] == 'foo'14 assert st.locals['MAGIC'] == 'bar'15 test()16 @stack.inspect_symbol_table17 def test(st):18 assert st.locals[stack._SKIP_FRAME_DEBUG_NAME] == 0xdeadbeaf19 stack._SKIP_FRAME_DEBUG_FAIL = True20 exec(stack._SKIP_FRAME_DEBUG_STMT)21 with pytest.raises(RuntimeError):22 test()23 stack._SKIP_FRAME_DEBUG_FAIL = False24 test()25def test_inspect_enclosing_env():26 MAGIC = 'bar'27 @stack.inspect_enclosing_env28 def test(env):29 assert env['MAGIC'] == 'bar'30 test()31 @stack.inspect_enclosing_env32 def test(env):33 assert env[stack._SKIP_FRAME_DEBUG_NAME] == 0xdeadbeaf34 stack._SKIP_FRAME_DEBUG_FAIL = True35 exec(stack._SKIP_FRAME_DEBUG_STMT)36 with pytest.raises(RuntimeError):37 test()38 stack._SKIP_FRAME_DEBUG_FAIL = False39 test()40def test_custom_env():41 MAGIC1 = 'foo'42 def test(env):43 assert env['MAGIC1'] == 'foo'44 assert env['MAGIC2'] == 'bar'45 st = stack.SymbolTable(locals={},globals={'MAGIC2':'bar'})46 test = stack.inspect_enclosing_env(test, st=st)47 test()48def test_get_symbol_table_copy_frames():49 non_copy_sts = []50 copy_sts = []51 for i in range(5):52 non_copy_sts.append(stack.get_symbol_table())53 copy_sts.append(stack.get_symbol_table(copy_locals=True))54 for j in range(5):55 assert non_copy_sts[j].locals["i"] == 4...
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