184 lines
7.5 KiB
C++
184 lines
7.5 KiB
C++
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/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#include <utility>
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#include <string>
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#include "util/script_exception.h"
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#include "util/name_set.h"
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#include "kernel/kernel_exception.h"
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#include "kernel/for_each_fn.h"
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#include "library/io_state_stream.h"
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#include "library/elaborator/elaborator_justification.h"
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#include "library/elaborator/elaborator_exception.h"
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#include "library/parser_nested_exception.h"
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#include "library/unsolved_metavar_exception.h"
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namespace lean {
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void display_error_pos(io_state const & ios, char const * strm_name, unsigned line, unsigned pos) {
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regular(ios) << strm_name << ":" << line << ":";
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if (pos != static_cast<unsigned>(-1))
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regular(ios) << pos << ":";
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regular(ios) << " error:";
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}
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void display_error_pos(io_state const & ios, pos_info_provider const * p, expr const & e) {
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if (p) {
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auto pos = p->get_pos_info(e);
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display_error_pos(ios, p->get_file_name(), pos.first, pos.second);
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} else {
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regular(ios) << "error:";
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}
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}
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void display_error_pos(io_state const & ios, pos_info_provider const * p, optional<expr> const & e) {
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if (e) {
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display_error_pos(ios, p, *e);
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} else if (p) {
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auto pos = p->get_some_pos();
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display_error_pos(ios, p->get_file_name(), pos.first, pos.second);
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} else {
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regular(ios) << "error:";
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}
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}
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void display_error(io_state const & ios, pos_info_provider const * p, exception const & ex);
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static void display_error(io_state const & ios, pos_info_provider const * p, kernel_exception const & ex) {
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display_error_pos(ios, p, ex.get_main_expr());
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regular(ios) << " " << ex << endl;
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}
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static void display_error(io_state const & ios, pos_info_provider const * p, elaborator_exception const & ex) {
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formatter fmt = ios.get_formatter();
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options opts = ios.get_options();
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auto j = ex.get_justification();
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j = remove_detail(j);
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regular(ios) << mk_pair(j.pp(fmt, opts, p, true), opts) << endl;
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}
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struct delta_pos_info_provider : public pos_info_provider {
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unsigned m_delta;
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std::string m_file_name;
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pos_info_provider const & m_provider;
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delta_pos_info_provider(unsigned d, char const * fname, pos_info_provider const & p):m_delta(d), m_file_name(fname), m_provider(p) {}
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virtual std::pair<unsigned, unsigned> get_pos_info(expr const & e) const {
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auto r = m_provider.get_pos_info(e);
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return mk_pair(r.first + m_delta, r.second);
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}
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virtual char const * get_file_name() const { return m_file_name.c_str(); }
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virtual std::pair<unsigned, unsigned> get_some_pos() const {
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auto r = m_provider.get_some_pos();
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return mk_pair(r.first + m_delta, r.second);
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}
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};
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static void display_error(io_state const & ios, pos_info_provider const * p, script_exception const & ex) {
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if (p) {
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char const * msg = ex.get_msg();
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char const * space = msg && *msg == ' ' ? "" : " ";
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switch (ex.get_source()) {
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case script_exception::source::String:
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display_error_pos(ios, p->get_file_name(), ex.get_line() + p->get_some_pos().first - 1, static_cast<unsigned>(-1));
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regular(ios) << " executing script," << space << msg << endl;
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break;
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case script_exception::source::File:
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display_error_pos(ios, p->get_file_name(), p->get_some_pos().first, p->get_some_pos().second);
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regular(ios) << " executing external script (" << ex.get_file_name() << ":" << ex.get_line() << ")," << space << msg << endl;
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break;
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case script_exception::source::Unknown:
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display_error_pos(ios, p->get_file_name(), p->get_some_pos().first, p->get_some_pos().second);
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regular(ios) << " executing script, exact error position is not available, " << ex.what() << endl;
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break;
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}
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} else {
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regular(ios) << ex.what() << endl;
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}
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}
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static void display_error(io_state const & ios, pos_info_provider const * p, script_nested_exception const & ex) {
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switch (ex.get_source()) {
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case script_exception::source::String:
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if (p) {
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display_error_pos(ios, p->get_file_name(), ex.get_line() + p->get_some_pos().first - 1, static_cast<unsigned>(-1));
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regular(ios) << " executing script" << endl;
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}
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display_error(ios, nullptr, ex.get_exception());
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break;
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case script_exception::source::File:
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if (p) {
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display_error_pos(ios, p->get_file_name(), p->get_some_pos().first, p->get_some_pos().second);
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regular(ios) << " executing external script (" << ex.get_file_name() << ":" << ex.get_line() << ")" << endl;
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} else {
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display_error_pos(ios, ex.get_file_name(), ex.get_line(), -1);
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regular(ios) << " executing script" << endl;
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}
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display_error(ios, nullptr, ex.get_exception());
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break;
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case script_exception::source::Unknown:
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display_error(ios, nullptr, ex.get_exception());
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break;
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}
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}
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static void display_error(io_state const & ios, pos_info_provider const *, parser_nested_exception const & ex) {
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display_error(ios, &(ex.get_provider()), ex.get_exception());
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}
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static void display_error(io_state const & ios, pos_info_provider const *, parser_exception const & ex) {
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regular(ios) << ex.what() << endl;
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}
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static void display_error(io_state const & ios, pos_info_provider const * p, unsolved_metavar_exception const & ex) {
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display_error_pos(ios, p, ex.get_expr());
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formatter fmt = ios.get_formatter();
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options opts = ios.get_options();
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unsigned indent = get_pp_indent(opts);
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format r = nest(indent, compose(line(), fmt(ex.get_expr(), opts)));
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regular(ios) << " " << ex.what() << mk_pair(r, opts) << endl;
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if (p) {
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name_set already_displayed;
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for_each(ex.get_expr(), [&](expr const & e, unsigned) -> bool {
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if (is_metavar(e)) {
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name const & m = metavar_name(e);
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if (already_displayed.find(m) == already_displayed.end()) {
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already_displayed.insert(m);
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for (unsigned i = 0; i < indent; i++) regular(ios) << " ";
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display_error_pos(ios, p, e);
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regular(ios) << " unsolved metavar " << m << endl;
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}
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}
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return true;
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});
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}
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}
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void display_error(io_state const & ios, pos_info_provider const * p, exception const & ex) {
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if (auto k_ex = dynamic_cast<kernel_exception const *>(&ex)) {
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display_error(ios, p, *k_ex);
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} else if (auto e_ex = dynamic_cast<elaborator_exception const *>(&ex)) {
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display_error(ios, p, *e_ex);
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} else if (auto m_ex = dynamic_cast<unsolved_metavar_exception const *>(&ex)) {
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display_error(ios, p, *m_ex);
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} else if (auto ls_ex = dynamic_cast<script_nested_exception const *>(&ex)) {
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display_error(ios, p, *ls_ex);
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} else if (auto s_ex = dynamic_cast<script_exception const *>(&ex)) {
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display_error(ios, p, *s_ex);
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} else if (auto n_ex = dynamic_cast<parser_nested_exception const *>(&ex)) {
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display_error(ios, p, *n_ex);
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} else if (auto n_ex = dynamic_cast<parser_exception const *>(&ex)) {
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display_error(ios, p, *n_ex);
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} else if (p) {
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display_error_pos(ios, p->get_file_name(), p->get_some_pos().first, p->get_some_pos().second);
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regular(ios) << " " << ex.what() << endl;
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} else {
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regular(ios) << "error: " << ex.what() << endl;
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}
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}
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}
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