| """BaseCompiler — contract for IR → executable shape (SQL string or pandas chain).""" | |
| from abc import ABC, abstractmethod | |
| from ..ir.models import QueryIR | |
| class BaseCompiler(ABC): | |
| """Subclasses: SqlCompiler, PandasCompiler.""" | |
| def compile(self, ir: QueryIR) -> object: | |
| ... | |