def __call__()

in fluent/migrate/transforms.py [0:0]

• 24 lines of code
• 13 McCabe index (conditional complexity)

    def __call__(self, ctx):
        # For each specified replacement, find all indices of the original
        # placeable in the source translation. If missing, the list of indices
        # will be empty.
        value = self.element.value
        if self.normalize_printf:
            value = normalize_printf(value)
        key_indices = {
            key: [m.start() for m in re.finditer(re.escape(key), value)]
            for key in self.replacements.keys()
        }

        # Build a dict of indices to replacement keys.
        keys_indexed = {}
        for key, indices in key_indices.items():
            for index in indices:
                keys_indexed[index] = key

        # Order the replacements by the position of the original placeable in
        # the translation.
        replacements = (
            (key, ctx.evaluate(self.replacements[key]))
            for index, key in sorted(keys_indexed.items(), key=lambda x: x[0])
        )

        # A list of PatternElements built from the legacy translation and the
        # FTL replacements. It may contain empty or adjacent TextElements.
        elements = []
        tail = value

        # Convert original placeables and text into FTL Nodes. For each
        # original placeable the translation will be partitioned around it and
        # the text before it will be converted into an `FTL.TextElement` and
        # the placeable will be replaced with its replacement.
        for key, node in replacements:
            before, key, tail = tail.partition(key)
            elements.append(FTL.TextElement(before))
            elements.append(node)

        # Don't forget about the tail after the loop ends.
        elements.append(FTL.TextElement(tail))
        return Transform.pattern_of(*elements)