/* Copyright (c) 2014 Microsoft Corporation. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Author: Leonardo de Moura */ #include "library/head_map.h" #include "library/explicit.h" namespace lean { head_index::head_index(expr const & e) { expr f = get_app_fn(e); while (true) { if (is_as_atomic(f)) f = get_app_fn(get_as_atomic_arg(f)); else if (is_explicit(f)) f = get_explicit_arg(f); else if (is_consume_args(f)) f = get_consume_args_arg(f); else break; } m_kind = f.kind(); if (is_constant(f)) m_const_name = const_name(f); } int head_index::cmp::operator()(head_index const & i1, head_index const & i2) const { if (i1.m_kind != i2.m_kind || i1.m_kind != expr_kind::Constant) return static_cast(i1.m_kind) - static_cast(i2.m_kind); else return quick_cmp(i1.m_const_name, i2.m_const_name); } }