269 lines
10 KiB
C++
269 lines
10 KiB
C++
/*
|
|
Copyright (c) 2015 Microsoft Corporation. All rights reserved.
|
|
Released under Apache 2.0 license as described in the file LICENSE.
|
|
|
|
Author: Leonardo de Moura
|
|
*/
|
|
#include "util/option_declarations.h"
|
|
#include "util/io.h"
|
|
#include "util/array_ref.h"
|
|
#include "kernel/replace_fn.h"
|
|
#include "library/constants.h"
|
|
#include "library/class.h"
|
|
#include "library/num.h"
|
|
#include "library/sorry.h"
|
|
#include "frontends/lean/decl_attributes.h"
|
|
#include "frontends/lean/parser.h"
|
|
#include "frontends/lean/tokens.h"
|
|
#include "frontends/lean/util.h"
|
|
#include "frontends/lean/typed_expr.h"
|
|
|
|
namespace lean {
|
|
// ==========================================
|
|
// New attribute manager API
|
|
extern "C" object* lean_is_attribute(object* n, object* w);
|
|
extern "C" object* lean_attribute_application_time(object* n, object* w);
|
|
extern "C" object* lean_add_attribute(object* env, object* decl, object* attr, object* args, uint8 persistent, object *w);
|
|
// extern "C" object* lean_add_scoped_attribute(object* env, object* decl, object* attr, object* args, object *w);
|
|
// extern "C" object* lean_erase_attribute(object* env, object* decl, object* attr, uint8 persistent, object *w);
|
|
|
|
bool is_new_attribute(name const & n) {
|
|
return get_io_scalar_result<bool>(lean_is_attribute(n.to_obj_arg(), io_mk_world()));
|
|
}
|
|
environment add_attribute(environment const & env, name const & decl, name const & attr, syntax const & args, bool persistent) {
|
|
return get_io_result<environment>(lean_add_attribute(env.to_obj_arg(), decl.to_obj_arg(), attr.to_obj_arg(), args.to_obj_arg(), persistent, io_mk_world()));
|
|
}
|
|
// environment add_scoped_attribute(environment const & env, name const & decl, name const & attr, syntax const & args) {
|
|
// return get_io_result<environment>(lean_add_scoped_attribute(env.to_obj_arg(), decl.to_obj_arg(), attr.to_obj_arg(), args.to_obj_arg(), io_mk_world()));
|
|
// }
|
|
// environment erase_attribute(environment const & env, name const & decl, name const & attr, bool persistent) {
|
|
// return get_io_result<environment>(lean_erase_attribute(env.to_obj_arg(), decl.to_obj_arg(), attr.to_obj_arg(), persistent, io_mk_world()));
|
|
// }
|
|
/*
|
|
inductive AttributeApplicationTime
|
|
| afterTypeChecking | afterCompilation | beforeElaboration
|
|
*/
|
|
bool is_after_compilation_attribute(name const & n) {
|
|
return get_io_scalar_result<uint8>(lean_attribute_application_time(n.to_obj_arg(), io_mk_world())) == 1;
|
|
}
|
|
bool is_before_elaboration_attribute(name const & n) {
|
|
return get_io_scalar_result<uint8>(lean_attribute_application_time(n.to_obj_arg(), io_mk_world())) == 2;
|
|
}
|
|
|
|
// ==========================================
|
|
|
|
expr decl_attributes::parse_attr_arg(parser & p, name const & attr_id) {
|
|
parser::undef_id_to_local_scope scope(p);
|
|
expr e = mk_const(attr_id);
|
|
while (!p.curr_is_token("]") && !p.curr_is_token(",")) {
|
|
expr arg = p.parse_expr(get_max_prec());
|
|
if (has_sorry(arg))
|
|
break;
|
|
e = mk_app(e, arg);
|
|
}
|
|
// the new frontend uses consts instead of locals for unknown names...
|
|
return replace(e, [](expr const & e) {
|
|
if (is_local(e))
|
|
return some_expr(mk_const(local_name(e)));
|
|
return none_expr();
|
|
});
|
|
}
|
|
|
|
extern "C" object* lean_mk_syntax_atom(object*);
|
|
extern "C" object* lean_mk_syntax_ident(object*);
|
|
extern "C" object* lean_mk_syntax_list(object*);
|
|
extern "C" object* lean_mk_syntax_str_lit(object*);
|
|
extern "C" object* lean_mk_syntax_num_lit(object*);
|
|
|
|
syntax mk_syntax_atom(string_ref const & s) { return syntax(lean_mk_syntax_atom(s.to_obj_arg())); }
|
|
syntax mk_syntax_ident(name const & n) { return syntax(lean_mk_syntax_ident(n.to_obj_arg())); }
|
|
syntax mk_syntax_list(buffer<syntax> const & args) { return syntax(lean_mk_syntax_list(to_array(args))); }
|
|
syntax mk_syntax_str_lit(string_ref const & s) { return syntax(lean_mk_syntax_str_lit(s.to_obj_arg())); }
|
|
syntax mk_syntax_num_lit(nat const & n) { return syntax(lean_mk_syntax_num_lit(n.to_obj_arg())); }
|
|
|
|
syntax decl_attributes::expr_to_syntax(expr const & e) {
|
|
buffer<expr> args;
|
|
get_app_args(e, args);
|
|
buffer<syntax> new_args;
|
|
for (expr arg : args) {
|
|
while (is_mdata(arg)) {
|
|
arg = mdata_expr(arg);
|
|
}
|
|
if (is_constant(arg)) {
|
|
new_args.push_back(mk_syntax_ident(const_name(arg)));
|
|
} else if (is_lit(arg)) {
|
|
literal const & val = lit_value(arg);
|
|
switch (val.kind()) {
|
|
case literal_kind::Nat:
|
|
new_args.push_back(mk_syntax_num_lit(val.get_nat()));
|
|
break;
|
|
case literal_kind::String:
|
|
new_args.push_back(mk_syntax_str_lit(val.get_string()));
|
|
break;
|
|
}
|
|
} else {
|
|
throw exception("unsupported kind of attribute parameter");
|
|
}
|
|
}
|
|
switch (new_args.size()) {
|
|
case 0:
|
|
return syntax(box(0));
|
|
default:
|
|
return mk_syntax_list(new_args);
|
|
}
|
|
}
|
|
|
|
void decl_attributes::parse_core(parser & p, bool compact) {
|
|
while (true) {
|
|
auto pos = p.pos();
|
|
bool scoped = p.curr_is_token_or_id(get_scoped_tk());
|
|
if (scoped) {
|
|
p.next();
|
|
}
|
|
bool deleted = p.curr_is_token_or_id(get_sub_tk());
|
|
if (deleted) {
|
|
if (m_persistent)
|
|
throw parser_error("cannot remove attribute globally (solution: use 'local attribute')", pos);
|
|
if (scoped)
|
|
throw parser_error("cannot remove scoped attribute", pos);
|
|
p.next();
|
|
}
|
|
name id;
|
|
if (p.curr_is_command()) {
|
|
id = p.get_token_info().value();
|
|
p.next();
|
|
} else {
|
|
id = p.check_id_next("invalid attribute declaration, identifier expected");
|
|
}
|
|
if (is_new_attribute(id)) {
|
|
syntax args(box(0));
|
|
if (!deleted) {
|
|
expr e = parse_attr_arg(p, id);
|
|
args = expr_to_syntax(e);
|
|
}
|
|
if (is_after_compilation_attribute(id)) {
|
|
m_after_comp_entries = cons({id, deleted, scoped, args}, m_after_comp_entries);
|
|
} else if (is_before_elaboration_attribute(id)) {
|
|
m_before_elab_entries = cons({id, deleted, scoped, args}, m_before_elab_entries);
|
|
} else {
|
|
m_after_tc_entries = cons({id, deleted, scoped, args}, m_after_tc_entries);
|
|
}
|
|
} else {
|
|
throw parser_error(sstream() << "unknown attribute [" << id << "]", pos);
|
|
}
|
|
if (p.curr_is_token(get_comma_tk())) {
|
|
p.next();
|
|
} else {
|
|
p.check_token_next(get_rbracket_tk(), "invalid attribute declaration, ']' expected");
|
|
if (compact)
|
|
break;
|
|
if (p.curr_is_token(get_lbracket_tk()))
|
|
p.next();
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void decl_attributes::parse(parser & p) {
|
|
if (!p.curr_is_token(get_lbracket_tk()))
|
|
return;
|
|
p.next();
|
|
parse_core(p, false);
|
|
}
|
|
|
|
void decl_attributes::parse_compact(parser & p) {
|
|
parse_core(p, true);
|
|
}
|
|
|
|
void decl_attributes::set_attribute(environment const & /* env */, name const & attr_name) {
|
|
if (is_new_attribute(attr_name)) {
|
|
// Temporary Hack... ignore attr_data_ptr
|
|
syntax args(box(0));
|
|
if (is_after_compilation_attribute(attr_name)) {
|
|
m_after_comp_entries = cons({attr_name, false, false, args}, m_after_comp_entries);
|
|
} else if (is_before_elaboration_attribute(attr_name)) {
|
|
m_before_elab_entries = cons({attr_name, false, false, args}, m_before_elab_entries);
|
|
} else {
|
|
m_after_tc_entries = cons({attr_name, false, false, args}, m_after_tc_entries);
|
|
}
|
|
} else {
|
|
throw exception(sstream() << "unknown attribute [" << attr_name << "]");
|
|
}
|
|
}
|
|
|
|
bool decl_attributes::has_attribute(list<new_entry> const & entries, name const & attr_name) const {
|
|
for (auto entry : entries) {
|
|
if (entry.m_attr == attr_name)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool decl_attributes::has_attribute(environment const & /* env */, name const & attr_name) const {
|
|
if (is_new_attribute(attr_name)) {
|
|
return has_attribute(m_after_tc_entries, attr_name) || has_attribute(m_after_comp_entries, attr_name) || has_attribute(m_before_elab_entries, attr_name);
|
|
} else {
|
|
throw exception(sstream() << "unknown attribute [" << attr_name << "]");
|
|
}
|
|
}
|
|
|
|
environment decl_attributes::apply_new_entries(environment env, list<new_entry> const & es, name const & d) const {
|
|
buffer<new_entry> new_entries;
|
|
to_buffer(es, new_entries);
|
|
unsigned i = new_entries.size();
|
|
while (i > 0) {
|
|
--i;
|
|
auto const & entry = new_entries[i];
|
|
if (entry.m_deleted) {
|
|
// env = erase_attribute(env, d, entry.m_attr, m_persistent);
|
|
throw exception("attribute erasure has not been implemented yet");
|
|
} else if (entry.m_scoped) {
|
|
// env = add_scoped_attribute(env, d, entry.m_attr, entry.m_args);
|
|
throw exception("scoped attributes have not been implemented yet");
|
|
} else {
|
|
env = add_attribute(env, d, entry.m_attr, entry.m_args, m_persistent);
|
|
}
|
|
}
|
|
return env;
|
|
}
|
|
|
|
environment decl_attributes::apply_after_tc(environment env, io_state const & /* ios */, name const & d) const {
|
|
return apply_new_entries(env, m_after_tc_entries, d);
|
|
}
|
|
|
|
environment decl_attributes::apply_after_comp(environment env, name const & d) const {
|
|
return apply_new_entries(env, m_after_comp_entries, d);
|
|
}
|
|
|
|
environment decl_attributes::apply_before_elab(environment env, io_state const & /* ios */, name const & d) const {
|
|
return apply_new_entries(env, m_before_elab_entries, d);
|
|
}
|
|
|
|
environment decl_attributes::apply_all(environment env, io_state const & ios, name const & d) const {
|
|
environment new_env = apply_before_elab(env, ios, d);
|
|
new_env = apply_after_tc(env, ios, d);
|
|
return apply_after_comp(new_env, d);
|
|
}
|
|
|
|
bool decl_attributes::ok_for_inductive_type() const {
|
|
for (new_entry const & e : m_after_tc_entries) {
|
|
if (e.m_attr != "class" || e.m_deleted)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool decl_attributes::has_class() const {
|
|
for (new_entry const & e : m_after_tc_entries)
|
|
if (e.m_attr == "class" && !e.m_deleted)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void initialize_decl_attributes() {
|
|
}
|
|
|
|
void finalize_decl_attributes() {
|
|
}
|
|
}
|