Source code for modalysis.core.expression

"""Expression field parsing utilities."""



def parse_expression_field(expression_field: str) -> dict[str, str]:
    """Parse `LABEL: VALUE; ...` expression text into uppercase mapping."""
    expression_by_label = {}
    if not expression_field:
        return expression_by_label

    for part in expression_field.split(";"):
        cleaned_part = part.strip()
        if not cleaned_part or ":" not in cleaned_part:
            continue
        label, value = cleaned_part.split(":", 1)
        normalized_label = label.strip().upper()
        normalized_value = value.strip().upper()
        if not normalized_label or not normalized_value:
            continue
        expression_by_label[normalized_label] = normalized_value

    return expression_by_label