1 files changed, 110 insertions, 0 deletions
diff --git a/Tools/c-analyzer/c_parser/preprocessor/errors.py b/Tools/c-analyzer/c_parser/preprocessor/errors.py
new file mode 100644
index 0000000000..9b66801d63
--- /dev/null
+++ b/Tools/c-analyzer/c_parser/preprocessor/errors.py
@@ -0,0 +1,110 @@
+import sys
+
+
+OS = sys.platform
+
+
+def _as_tuple(items):
+    if isinstance(items, str):
+        return tuple(items.strip().replace(',', ' ').split())
+    elif items:
+        return tuple(items)
+    else:
+        return ()
+
+
+class PreprocessorError(Exception):
+    """Something preprocessor-related went wrong."""
+
+    @classmethod
+    def _msg(cls, filename, reason, **ignored):
+        msg = 'failure while preprocessing'
+        if reason:
+            msg = f'{msg} ({reason})'
+        return msg
+
+    def __init__(self, filename, preprocessor=None, reason=None):
+        if isinstance(reason, str):
+            reason = reason.strip()
+
+        self.filename = filename
+        self.preprocessor = preprocessor or None
+        self.reason = str(reason) if reason else None
+
+        msg = self._msg(**vars(self))
+        msg = f'({filename}) {msg}'
+        if preprocessor:
+            msg = f'[{preprocessor}] {msg}'
+        super().__init__(msg)
+
+
+class PreprocessorFailure(PreprocessorError):
+    """The preprocessor command failed."""
+
+    @classmethod
+    def _msg(cls, error, **ignored):
+        msg = 'preprocessor command failed'
+        if error:
+            msg = f'{msg} {error}'
+        return msg
+
+    def __init__(self, filename, argv, error=None, preprocessor=None):
+        exitcode = -1
+        if isinstance(error, tuple):
+            if len(error) == 2:
+                error, exitcode = error
+            else:
+                error = str(error)
+        if isinstance(error, str):
+            error = error.strip()
+
+        self.argv = _as_tuple(argv) or None
+        self.error = error if error else None
+        self.exitcode = exitcode
+
+        reason = str(self.error)
+        super().__init__(filename, preprocessor, reason)
+
+
+class ErrorDirectiveError(PreprocessorFailure):
+    """The file hit a #error directive."""
+
+    @classmethod
+    def _msg(cls, error, **ignored):
+        return f'#error directive hit ({error})'
+
+    def __init__(self, filename, argv, error, *args, **kwargs):
+        super().__init__(filename, argv, error, *args, **kwargs)
+
+
+class MissingDependenciesError(PreprocessorFailure):
+    """The preprocessor did not have access to all the target's dependencies."""
+
+    @classmethod
+    def _msg(cls, missing, **ignored):
+        msg = 'preprocessing failed due to missing dependencies'
+        if missing:
+            msg = f'{msg} ({", ".join(missing)})'
+        return msg
+
+    def __init__(self, filename, missing=None, *args, **kwargs):
+        self.missing = _as_tuple(missing) or None
+
+        super().__init__(filename, *args, **kwargs)
+
+
+class OSMismatchError(MissingDependenciesError):
+    """The target is not compatible with the host OS."""
+
+    @classmethod
+    def _msg(cls, expected, **ignored):
+        return f'OS is {OS} but expected {expected or "???"}'
+
+    def __init__(self, filename, expected=None, *args, **kwargs):
+        if isinstance(expected, str):
+            expected = expected.strip()
+
+        self.actual = OS
+        self.expected = expected if expected else None
+
+        super().__init__(filename, None, *args, **kwargs)