Python Errors.is_errors方法代码示例

# 需要导入模块: from mypy.errors import Errors [as 别名]
# 或者: from mypy.errors.Errors import is_errors [as 别名]
def parse(source: Union[str, bytes], fnam: str = None, errors: Errors = None,
          pyversion: Tuple[int, int] = defaults.PYTHON3_VERSION,
          custom_typing_module: str = None) -> MypyFile:
    """Parse a source file, without doing any semantic analysis.

    Return the parse tree. If errors is not provided, raise ParseError
    on failure. Otherwise, use the errors object to report parse errors.

    The pyversion (major, minor) argument determines the Python syntax variant.
    """
    raise_on_error = False
    if errors is None:
        errors = Errors()
        raise_on_error = True
    errors.set_file('<input>' if fnam is None else fnam)
    is_stub_file = bool(fnam) and fnam.endswith('.pyi')
    try:
        assert pyversion[0] >= 3 or is_stub_file
        ast = ast35.parse(source, fnam, 'exec')

        tree = ASTConverter(pyversion=pyversion,
                            is_stub=is_stub_file,
                            errors=errors,
                            custom_typing_module=custom_typing_module,
                            ).visit(ast)
        tree.path = fnam
        tree.is_stub = is_stub_file
    except SyntaxError as e:
        errors.report(e.lineno, e.offset, e.msg)
        tree = MypyFile([], [], False, set())

    if raise_on_error and errors.is_errors():
        errors.raise_error()

    return tree

# 需要导入模块: from mypy.errors import Errors [as 别名]
# 或者: from mypy.errors.Errors import is_errors [as 别名]

#.........这里部分代码省略.........

        # Process states in a loop until all files (states) have been
        # semantically analyzed or type checked (depending on target).
        #
        # We type check all files before the rest of the passes so that we can
        # report errors and fail as quickly as possible.
        while True:
            # Find the next state that has all its dependencies met.
            next = self.next_available_state()
            if not next:
                trace('done')
                break

            # Potentially output some debug information.
            trace('next {} ({})'.format(next.path, next.state()))

            # Set the import context for reporting error messages correctly.
            self.errors.set_import_context(next.import_context)
            # Process the state. The process method is reponsible for adding a
            # new state object representing the new state of the file.
            next.process()

            # Raise exception if the build failed. The build can fail for
            # various reasons, such as parse error, semantic analysis error,
            # etc.
            if self.errors.is_blockers():
                self.errors.raise_error()

        # If there were no errors, all files should have been fully processed.
        for s in self.states:
            assert s.state() == final_state, (
                '{} still unprocessed in state {}'.format(s.path, s.state()))

        if self.errors.is_errors():
            self.errors.raise_error()

        # Collect a list of all files.
        trees = []  # type: List[MypyFile]
        for state in self.states:
            trees.append(cast(ParsedFile, state).tree)

        # Perform any additional passes after type checking for all the files.
        self.final_passes(trees, self.type_checker.type_map)

        return BuildResult(self.semantic_analyzer.modules,
                           self.type_checker.type_map)

    def next_available_state(self) -> 'State':
        """Find a ready state (one that has all its dependencies met)."""
        i = len(self.states) - 1
        while i >= 0:
            if self.states[i].is_ready():
                num_incomplete = self.states[i].num_incomplete_deps()
                if num_incomplete == 0:
                    # This is perfect; no need to look for the best match.
                    return self.states[i]
            i -= 1
        return None

    def has_module(self, name: str) -> bool:
        """Have we seen a module yet?"""
        return name in self.module_files

    def file_state(self, path: str) -> int:
        """Return the state of a source file.

# 需要导入模块: from mypy.errors import Errors [as 别名]
# 或者: from mypy.errors.Errors import is_errors [as 别名]
class BuildManager:
    """This is the central class for building a mypy program.

    It coordinates parsing, import processing, semantic analysis and
    type checking. It manages state objects that actually perform the
    build steps.

    Attributes:
      data_dir:        Mypy data directory (contains stubs)
      target:          Build target; selects which passes to perform
      lib_path:        Library path for looking up modules
      semantic_analyzer:
                       Semantic analyzer, pass 2
      semantic_analyzer_pass3:
                       Semantic analyzer, pass 3
      type_checker:    Type checker
      errors:          Used for reporting all errors
      output_dir:      Store output files here (Python)
      pyversion:       Python version (2 or 3)
      flags:           Build options
      states:          States of all individual files that are being
                       processed. Each file in a build is always represented
                       by a single state object (after it has been encountered
                       for the first time). This is the only place where
                       states are stored.
      module_files:    Map from module name to source file path. There is a
                       1:1 mapping between modules and source files.
      icode:           Generated icode (when compiling via C)
      binary_path:     Path of the generated binary (or None)
      module_deps:     Cache for module dependencies (direct or indirect).
                       Item (m, n) indicates whether m depends on n (directly
                       or indirectly).

    TODO Refactor code related to transformation, icode generation etc. to
         external objects.  This module should not directly depend on them.
    """
    
    def __init__(self, data_dir: str,
                 lib_path: List[str],
                 target: int,
                 output_dir: str,
                 pyversion: int,
                 flags: List[str],
                 ignore_prefix: str) -> None:
        self.data_dir = data_dir
        self.errors = Errors()
        self.errors.set_ignore_prefix(ignore_prefix)
        self.lib_path = lib_path
        self.target = target
        self.output_dir = output_dir
        self.pyversion = pyversion
        self.flags = flags
        self.semantic_analyzer = SemanticAnalyzer(lib_path, self.errors)
        self.semantic_analyzer_pass3 = ThirdPass(self.errors)
        self.type_checker = TypeChecker(self.errors,
                                        self.semantic_analyzer.modules,
                                        self.pyversion)
        self.states = List[State]()
        self.module_files = Dict[str, str]()
        self.icode = Dict[str, FuncIcode]()
        self.binary_path = None # type: str
        self.module_deps = Dict[Tuple[str, str], bool]()
    
    def process(self, initial_state: 'UnprocessedFile') -> BuildResult:
        """Perform a build.

        The argument is a state that represents the main program
        file. This method should only be called once per a build
        manager object.  The return values are identical to the return
        values of the build function.
        """
        self.states.append(initial_state)
        
        # Process states in a loop until all files (states) have been
        # semantically analyzed or type checked (depending on target).
        #
        # We type check all files before the rest of the passes so that we can
        # report errors and fail as quickly as possible.
        while True:
            # Find the next state that has all its dependencies met.
            next = self.next_available_state()
            if not next:
                trace('done')
                break
            
            # Potentially output some debug information.
            trace('next {} ({})'.format(next.path, next.state()))
            
            # Set the import context for reporting error messages correctly.
            self.errors.set_import_context(next.import_context)
            # Process the state. The process method is reponsible for adding a
            # new state object representing the new state of the file.
            next.process()
        
            # Raise exception if the build failed. The build can fail for
            # various reasons, such as parse error, semantic analysis error,
            # etc.
            if self.errors.is_errors():
                self.errors.raise_error()
        
#.........这里部分代码省略.........