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import ast | ||
import shutil | ||
from typing import List, Tuple | ||
from pprint import pprint | ||
from enum import Enum | ||
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''' | ||
AST analyzer | ||
''' | ||
class Analyzer(ast.NodeVisitor): | ||
def __init__(self) -> None: | ||
self.stats = { | ||
'for': 0, | ||
'import': [], | ||
} | ||
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def visit_For(self, node): | ||
for alias in node.names: | ||
self.stats['for'].append(alias.name) | ||
self.generic_visit(node) | ||
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def visit_Import(self, node): | ||
for alias in node.names: | ||
self.stats["import"].append(alias.name) | ||
self.generic_visit(node) | ||
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def report(self): | ||
pprint(self.stats) | ||
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''' | ||
Notation format enum | ||
''' | ||
class NotationFormat(Enum): | ||
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BIG_O : str = 'BIG O' | ||
BIG_OMEGA : str = 'BIG Ω (OMEGA)' | ||
BIG_THETA : str = 'BIG Θ (THETA)' | ||
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def __str__(self) -> str: | ||
return str(self.value) | ||
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''' | ||
Class that contains and represents analysis data | ||
''' | ||
class AnalysisFormatter: | ||
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def __init__( | ||
self, | ||
notation_format: NotationFormat, | ||
func_name: str = 'No name', | ||
func_attrs: List[Tuple[str, str]] | None = None, | ||
complexity: str = '1', | ||
memory: str = '1', | ||
) -> None: | ||
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self.notation_format = notation_format | ||
self.func_name = func_name | ||
self.func_attrs = func_attrs | ||
self.complexity = complexity | ||
self.memory = memory | ||
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def report(self, full=True): | ||
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print() | ||
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if full: | ||
print('Function name:', self.func_name) | ||
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if self.func_attrs: | ||
print('Function attributes:', ', '.join([f'{attr_name}: {attr_type}' for attr_name, attr_type in self.func_attrs])) | ||
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terminal_width = shutil.get_terminal_size().columns | ||
indent = max((terminal_width - len(self.notation_format.__str__()) - 2)//2, 0) | ||
print('-' * indent + f' {self.notation_format.__str__()} ' + '-' * indent) | ||
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if self.notation_format == NotationFormat.BIG_O: | ||
print('Сomplexity of algorithm: O({})'.format(self.complexity)) | ||
print('Memory of algorithm: O({})'.format(self.memory)) | ||
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if self.notation_format == NotationFormat.BIG_OMEGA: | ||
print('Сomplexity of algorithm: Ω({})'.format(self.complexity)) | ||
print('Memory of algorithm: Ω({})'.format(self.memory)) | ||
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if self.notation_format == NotationFormat.BIG_THETA: | ||
print('Сomplexity of algorithm: Θ({})'.format(self.complexity)) | ||
print('Memory of algorithm: Θ({})'.format(self.memory)) | ||
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print() | ||
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import ast | ||
import inspect | ||
from typing import List, Tuple | ||
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<<<<<<<< HEAD:pycomplexity/notations.py | ||
from pycomplexity.analysis import Analyzer, AnalysisFormatter, NotationFormat | ||
======== | ||
from analysis import Analyzer, AnalysisFormatter, NotationFormat | ||
>>>>>>>> b9371afd8058da6c402979f1d0bf20215ea8fbc7:notations.py | ||
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''' | ||
Base class of asymptotic notation | ||
''' | ||
class AsymptoticNotation: | ||
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def __init__(self, full_report: bool = True) -> None: | ||
self.full_report = full_report | ||
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def _code_to_string(self, func) -> str: | ||
code = inspect.getsource(func) | ||
code_lines = code.split('\n')[1:] | ||
modified_code = '\n'.join(code_lines) | ||
return modified_code | ||
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def _get_ast(self, func) -> ast.Module: | ||
code_str = self._code_to_string(func) | ||
return ast.parse(code_str) | ||
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def analyze(self, func): | ||
analyzer = Analyzer() | ||
tree = self._get_ast(func) | ||
# print(ast.dump(tree, indent=4)) | ||
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for node in ast.walk(tree): | ||
# print(node) | ||
if isinstance(node, ast.FunctionDef): | ||
func_name = node.name | ||
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if isinstance(node, ast.For): | ||
print(node, node.body, node.iter) | ||
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# analyzer.visit(tree) | ||
# analyzer.report() | ||
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return func_name or 'No name', ... | ||
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def report(func): | ||
def wrapper(self, *args, **kwargs): | ||
analysis_formatter: AnalysisFormatter = func(self, *args, **kwargs) | ||
return analysis_formatter.report(full=self.full_report) | ||
return wrapper | ||
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''' | ||
Implementation of Big O notation | ||
''' | ||
class BigO(AsymptoticNotation): | ||
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def __init__(self) -> None: | ||
super().__init__() | ||
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@AsymptoticNotation.report | ||
def complexity(self, func) -> AnalysisFormatter: | ||
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func_name, _ = self.analyze(func) | ||
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return AnalysisFormatter( | ||
func_name=func_name, | ||
notation_format=NotationFormat.BIG_O, | ||
) | ||
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''' | ||
Implementation of Big Omega notation | ||
''' | ||
class BigOmega(AsymptoticNotation): | ||
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def __init__(self) -> None: | ||
super().__init__() | ||
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@AsymptoticNotation.report | ||
def complexity(self, func) -> AnalysisFormatter: | ||
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func_name, _ = self.analyze(func) | ||
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return AnalysisFormatter( | ||
func_name=func_name, | ||
notation_format=NotationFormat.BIG_OMEGA, | ||
) | ||
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''' | ||
Implementation of Big Theta notation | ||
''' | ||
class BigTheta(AsymptoticNotation): | ||
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def __init__(self) -> None: | ||
super().__init__() | ||
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@AsymptoticNotation.report | ||
def complexity(self, func) -> AnalysisFormatter: | ||
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func_name, _ = self.analyze(func) | ||
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return AnalysisFormatter( | ||
func_name=func_name, | ||
notation_format=NotationFormat.BIG_THETA, | ||
) |
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