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flags: { rules: "TInt @ type(?Gamma, intlit(?n), tint) <-;\nTString @ type(?Gamma, strlit(?s), tstr) <-;\nTVar @ type(?Gamma, var(?x), ?tau) <- inenv(?x, ?tau, ?Gamma);\nTPlusI @ type(?Gamma, plus(?e_1, ?e_2), tint) <- type(?Gamma, ?e_1, tint), type(?Gamma, ?e_2, tint);\nTPlusS @ type(?Gamma, plus(?e_1, ?e_2), tstr) <- type(?Gamma, ?e_1, tstr), type(?Gamma, ?e_2, tstr);\nTPair @ type(?Gamma, pair(?e_1, ?e_2), tpair(?tau_1, ?tau_2)) <- type(?Gamma, ?e_1, ?tau_1), type(?Gamma, ?e_2, ?tau_2);\nTFst @ type(?Gamma, fst(?e), ?tau_1) <- type(?Gamma, ?e, tpair(?tau_1, ?tau_2));\nTSnd @ type(?Gamma, snd(?e), ?tau_2) <- type(?Gamma, ?e, tpair(?tau_1, ?tau_2));\nTAbs @ type(?Gamma, abs(?x, ?tau_1, ?e), tarr(?tau_1, ?tau_2)) <- type(extend(?Gamma, ?x, ?tau_1), ?e, ?tau_2);\nTApp @ type(?Gamma, app(?e_1, ?e_2), ?tau_2) <- type(?Gamma, ?e_1, tarr(?tau_1, ?tau_2)), type(?Gamma, ?e_2, ?tau_1);\n\nGammaTake @ inenv(?x, ?tau_1, extend(?Gamma, ?x, ?tau_1)) <-;\nGammaSkip @ inenv(?x, ?tau_1, extend(?Gamma, ?y, ?tau_2)) <- inenv(?x, ?tau_1, ?Gamma);", query: "type(empty, app(abs(x, tint, var(x)), intlit(1)), ?tau)" }
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