feat: pdf2cad

src/pdf2imos/errors.py

@@ -0,0 +1,28 @@
+"""Custom exception hierarchy for pdf2imos pipeline."""
+
+
+class Pdf2ImosError(Exception):
+    """Base exception for all pdf2imos errors."""
+
+
+class PdfExtractionError(Pdf2ImosError):
+    """Raised when PDF extraction fails.
+
+    Covers: invalid/corrupt PDF, empty PDF (0 pages),
+    raster-only PDF (no vector content).
+    """
+
+
+class ViewSegmentationError(Pdf2ImosError):
+    """Raised when view segmentation fails."""
+
+
+class DimensionExtractionError(Pdf2ImosError):
+    """Raised when dimension extraction or assembly fails.
+
+    Covers: no dimensions found, assembly returns None.
+    """
+
+
+class OutputWriteError(Pdf2ImosError):
+    """Raised when writing output files (DXF/JSON/DWG) fails."""