diff options
Diffstat (limited to 'libbuild2/build/script')
| -rw-r--r-- | libbuild2/build/script/builtin-options.cxx | 122 | ||||
| -rw-r--r-- | libbuild2/build/script/builtin-options.hxx | 128 | ||||
| -rw-r--r-- | libbuild2/build/script/builtin-options.ixx | 96 | ||||
| -rw-r--r-- | libbuild2/build/script/builtin.cli | 11 | ||||
| -rw-r--r-- | libbuild2/build/script/parser.cxx | 773 | ||||
| -rw-r--r-- | libbuild2/build/script/parser.hxx | 49 | ||||
| -rw-r--r-- | libbuild2/build/script/script.hxx | 2 | ||||
| -rw-r--r-- | libbuild2/build/script/types-parsers.cxx | 56 | ||||
| -rw-r--r-- | libbuild2/build/script/types-parsers.hxx | 49 |
9 files changed, 1013 insertions, 273 deletions
diff --git a/libbuild2/build/script/builtin-options.cxx b/libbuild2/build/script/builtin-options.cxx index dfb8e62..cf99b12 100644 --- a/libbuild2/build/script/builtin-options.cxx +++ b/libbuild2/build/script/builtin-options.cxx @@ -6,6 +6,7 @@ // Begin prologue. // +#include <libbuild2/build/script/types-parsers.hxx> // // End prologue. @@ -404,86 +405,77 @@ namespace build2 : file_ (), file_specified_ (false), format_ (), - format_specified_ (false) + format_specified_ (false), + what_ (), + what_specified_ (false), + include_path_ (), + include_path_specified_ (false), + default_prereq_type_ (), + default_prereq_type_specified_ (false) { } - depdb_dep_options:: - depdb_dep_options (int& argc, - char** argv, - bool erase, - ::build2::build::script::cli::unknown_mode opt, - ::build2::build::script::cli::unknown_mode arg) - : file_ (), - file_specified_ (false), - format_ (), - format_specified_ (false) + bool depdb_dep_options:: + parse (int& argc, + char** argv, + bool erase, + ::build2::build::script::cli::unknown_mode opt, + ::build2::build::script::cli::unknown_mode arg) { ::build2::build::script::cli::argv_scanner s (argc, argv, erase); - _parse (s, opt, arg); + bool r = _parse (s, opt, arg); + return r; } - depdb_dep_options:: - depdb_dep_options (int start, - int& argc, - char** argv, - bool erase, - ::build2::build::script::cli::unknown_mode opt, - ::build2::build::script::cli::unknown_mode arg) - : file_ (), - file_specified_ (false), - format_ (), - format_specified_ (false) + bool depdb_dep_options:: + parse (int start, + int& argc, + char** argv, + bool erase, + ::build2::build::script::cli::unknown_mode opt, + ::build2::build::script::cli::unknown_mode arg) { ::build2::build::script::cli::argv_scanner s (start, argc, argv, erase); - _parse (s, opt, arg); + bool r = _parse (s, opt, arg); + return r; } - depdb_dep_options:: - depdb_dep_options (int& argc, - char** argv, - int& end, - bool erase, - ::build2::build::script::cli::unknown_mode opt, - ::build2::build::script::cli::unknown_mode arg) - : file_ (), - file_specified_ (false), - format_ (), - format_specified_ (false) + bool depdb_dep_options:: + parse (int& argc, + char** argv, + int& end, + bool erase, + ::build2::build::script::cli::unknown_mode opt, + ::build2::build::script::cli::unknown_mode arg) { ::build2::build::script::cli::argv_scanner s (argc, argv, erase); - _parse (s, opt, arg); + bool r = _parse (s, opt, arg); end = s.end (); + return r; } - depdb_dep_options:: - depdb_dep_options (int start, - int& argc, - char** argv, - int& end, - bool erase, - ::build2::build::script::cli::unknown_mode opt, - ::build2::build::script::cli::unknown_mode arg) - : file_ (), - file_specified_ (false), - format_ (), - format_specified_ (false) + bool depdb_dep_options:: + parse (int start, + int& argc, + char** argv, + int& end, + bool erase, + ::build2::build::script::cli::unknown_mode opt, + ::build2::build::script::cli::unknown_mode arg) { ::build2::build::script::cli::argv_scanner s (start, argc, argv, erase); - _parse (s, opt, arg); + bool r = _parse (s, opt, arg); end = s.end (); + return r; } - depdb_dep_options:: - depdb_dep_options (::build2::build::script::cli::scanner& s, - ::build2::build::script::cli::unknown_mode opt, - ::build2::build::script::cli::unknown_mode arg) - : file_ (), - file_specified_ (false), - format_ (), - format_specified_ (false) + bool depdb_dep_options:: + parse (::build2::build::script::cli::scanner& s, + ::build2::build::script::cli::unknown_mode opt, + ::build2::build::script::cli::unknown_mode arg) { - _parse (s, opt, arg); + bool r = _parse (s, opt, arg); + return r; } typedef @@ -497,11 +489,23 @@ namespace build2 _cli_depdb_dep_options_map_init () { _cli_depdb_dep_options_map_["--file"] = - &::build2::build::script::cli::thunk< depdb_dep_options, string, &depdb_dep_options::file_, + &::build2::build::script::cli::thunk< depdb_dep_options, path, &depdb_dep_options::file_, &depdb_dep_options::file_specified_ >; _cli_depdb_dep_options_map_["--format"] = &::build2::build::script::cli::thunk< depdb_dep_options, string, &depdb_dep_options::format_, &depdb_dep_options::format_specified_ >; + _cli_depdb_dep_options_map_["--what"] = + &::build2::build::script::cli::thunk< depdb_dep_options, string, &depdb_dep_options::what_, + &depdb_dep_options::what_specified_ >; + _cli_depdb_dep_options_map_["--include-path"] = + &::build2::build::script::cli::thunk< depdb_dep_options, dir_paths, &depdb_dep_options::include_path_, + &depdb_dep_options::include_path_specified_ >; + _cli_depdb_dep_options_map_["-I"] = + &::build2::build::script::cli::thunk< depdb_dep_options, dir_paths, &depdb_dep_options::include_path_, + &depdb_dep_options::include_path_specified_ >; + _cli_depdb_dep_options_map_["--default-prereq-type"] = + &::build2::build::script::cli::thunk< depdb_dep_options, string, &depdb_dep_options::default_prereq_type_, + &depdb_dep_options::default_prereq_type_specified_ >; } }; diff --git a/libbuild2/build/script/builtin-options.hxx b/libbuild2/build/script/builtin-options.hxx index ccfd54b..85d67b9 100644 --- a/libbuild2/build/script/builtin-options.hxx +++ b/libbuild2/build/script/builtin-options.hxx @@ -302,48 +302,55 @@ namespace build2 public: depdb_dep_options (); - depdb_dep_options (int& argc, - char** argv, - bool erase = false, - ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, - ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); - - depdb_dep_options (int start, - int& argc, - char** argv, - bool erase = false, - ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, - ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); - - depdb_dep_options (int& argc, - char** argv, - int& end, - bool erase = false, - ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, - ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); - - depdb_dep_options (int start, - int& argc, - char** argv, - int& end, - bool erase = false, - ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, - ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); - - depdb_dep_options (::build2::build::script::cli::scanner&, - ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, - ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); + // Return true if anything has been parsed. + // + bool + parse (int& argc, + char** argv, + bool erase = false, + ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, + ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); + + bool + parse (int start, + int& argc, + char** argv, + bool erase = false, + ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, + ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); + + bool + parse (int& argc, + char** argv, + int& end, + bool erase = false, + ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, + ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); + + bool + parse (int start, + int& argc, + char** argv, + int& end, + bool erase = false, + ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, + ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); + + bool + parse (::build2::build::script::cli::scanner&, + ::build2::build::script::cli::unknown_mode option = ::build2::build::script::cli::unknown_mode::fail, + ::build2::build::script::cli::unknown_mode argument = ::build2::build::script::cli::unknown_mode::stop); // Option accessors and modifiers. // - const string& + const path& file () const; - string& + path& file (); void - file (const string&); + file (const path&); bool file_specified () const; @@ -366,6 +373,51 @@ namespace build2 void format_specified (bool); + const string& + what () const; + + string& + what (); + + void + what (const string&); + + bool + what_specified () const; + + void + what_specified (bool); + + const dir_paths& + include_path () const; + + dir_paths& + include_path (); + + void + include_path (const dir_paths&); + + bool + include_path_specified () const; + + void + include_path_specified (bool); + + const string& + default_prereq_type () const; + + string& + default_prereq_type (); + + void + default_prereq_type (const string&); + + bool + default_prereq_type_specified () const; + + void + default_prereq_type_specified (bool); + // Implementation details. // protected: @@ -379,10 +431,16 @@ namespace build2 ::build2::build::script::cli::unknown_mode argument); public: - string file_; + path file_; bool file_specified_; string format_; bool format_specified_; + string what_; + bool what_specified_; + dir_paths include_path_; + bool include_path_specified_; + string default_prereq_type_; + bool default_prereq_type_specified_; }; } } diff --git a/libbuild2/build/script/builtin-options.ixx b/libbuild2/build/script/builtin-options.ixx index 3263803..06575c8 100644 --- a/libbuild2/build/script/builtin-options.ixx +++ b/libbuild2/build/script/builtin-options.ixx @@ -179,20 +179,20 @@ namespace build2 // depdb_dep_options // - inline const string& depdb_dep_options:: + inline const path& depdb_dep_options:: file () const { return this->file_; } - inline string& depdb_dep_options:: + inline path& depdb_dep_options:: file () { return this->file_; } inline void depdb_dep_options:: - file (const string& x) + file (const path& x) { this->file_ = x; } @@ -238,6 +238,96 @@ namespace build2 { this->format_specified_ = x; } + + inline const string& depdb_dep_options:: + what () const + { + return this->what_; + } + + inline string& depdb_dep_options:: + what () + { + return this->what_; + } + + inline void depdb_dep_options:: + what (const string& x) + { + this->what_ = x; + } + + inline bool depdb_dep_options:: + what_specified () const + { + return this->what_specified_; + } + + inline void depdb_dep_options:: + what_specified (bool x) + { + this->what_specified_ = x; + } + + inline const dir_paths& depdb_dep_options:: + include_path () const + { + return this->include_path_; + } + + inline dir_paths& depdb_dep_options:: + include_path () + { + return this->include_path_; + } + + inline void depdb_dep_options:: + include_path (const dir_paths& x) + { + this->include_path_ = x; + } + + inline bool depdb_dep_options:: + include_path_specified () const + { + return this->include_path_specified_; + } + + inline void depdb_dep_options:: + include_path_specified (bool x) + { + this->include_path_specified_ = x; + } + + inline const string& depdb_dep_options:: + default_prereq_type () const + { + return this->default_prereq_type_; + } + + inline string& depdb_dep_options:: + default_prereq_type () + { + return this->default_prereq_type_; + } + + inline void depdb_dep_options:: + default_prereq_type (const string& x) + { + this->default_prereq_type_ = x; + } + + inline bool depdb_dep_options:: + default_prereq_type_specified () const + { + return this->default_prereq_type_specified_; + } + + inline void depdb_dep_options:: + default_prereq_type_specified (bool x) + { + this->default_prereq_type_specified_ = x; + } } } } diff --git a/libbuild2/build/script/builtin.cli b/libbuild2/build/script/builtin.cli index 6e66d67..3ed3659 100644 --- a/libbuild2/build/script/builtin.cli +++ b/libbuild2/build/script/builtin.cli @@ -17,8 +17,15 @@ namespace build2 // class depdb_dep_options { - string --file; // @@ TMP path - string --format; + // Note that --byproduct, if any, must be the first option and is + // handled ad hoc, kind of as a sub-command. + // + path --file; // Read from file rather than stdin. + string --format; // Dependency format: make (default). + string --what; // Dependency kind, e.g., "header". + dir_paths --include-path|-I; // Search paths for generated files. + string --default-prereq-type; // Default prerequisite type to use + // if none could be derived from ext. }; } } diff --git a/libbuild2/build/script/parser.cxx b/libbuild2/build/script/parser.cxx index c6d7d49..67dbf69 100644 --- a/libbuild2/build/script/parser.cxx +++ b/libbuild2/build/script/parser.cxx @@ -3,11 +3,16 @@ #include <libbuild2/build/script/parser.hxx> +#include <cstring> // strcmp() +#include <sstream> + #include <libbutl/builtin.hxx> #include <libbuild2/depdb.hxx> +#include <libbuild2/dyndep.hxx> #include <libbuild2/function.hxx> #include <libbuild2/algorithm.hxx> +#include <libbuild2/make-parser.hxx> #include <libbuild2/script/run.hxx> @@ -129,8 +134,8 @@ namespace build2 // Save the custom dependency change tracking lines, if present. // s.depdb_clear = depdb_clear_.has_value (); - if (depdb_pre_dynamic_) - s.depdb_pre_dynamic = depdb_pre_dynamic_->second; + if (depdb_dyndep_) + s.depdb_dyndep = depdb_dyndep_->second; s.depdb_preamble = move (depdb_preamble_); return s; @@ -497,7 +502,7 @@ namespace build2 v != "hash" && v != "string" && v != "env" && - v != "pre-dynamic")) + v != "dyndep")) { fail (get_location (t)) << "expected 'depdb' builtin command instead of " << t; @@ -543,28 +548,31 @@ namespace build2 } else { - // Verify depdb-pre-dynamic is last. + // Verify depdb-dyndep is last. // - if (v == "pre-dynamic") + if (v == "dyndep") { - // Note that for now we do not allow multiple pre-dynamic - // calls. But we may wan to relax this later (though - // alternating targets with prerequisites may be tricky -- - // maybe still only allow additional targets in the first - // call). + // Note that for now we do not allow multiple dyndep calls. + // But we may wan to relax this later (though alternating + // targets with prerequisites in depdb may be tricky -- maybe + // still only allow additional targets in the first call). // - if (!depdb_pre_dynamic_) - depdb_pre_dynamic_ = make_pair (l, depdb_preamble_.size ()); + if (!depdb_dyndep_) + depdb_dyndep_ = make_pair (l, depdb_preamble_.size ()); else - fail (l) << "multiple 'depdb pre-dynamic' calls" << - info (depdb_pre_dynamic_->first) << "previous call is here"; + fail (l) << "multiple 'depdb dyndep' calls" << + info (depdb_dyndep_->first) << "previous call is here"; + +#if 0 + if (peek () == type::word && peeked ().value == "--byproduct") + ; +#endif } else { - if (depdb_pre_dynamic_) - fail (l) << "'depdb " << v << "' after 'depdb pre-dynamic'" << - info (depdb_pre_dynamic_->first) - << "'depdb pre-dynamic' call is here"; + if (depdb_dyndep_) + fail (l) << "'depdb " << v << "' after 'depdb dyndep'" << + info (depdb_dyndep_->first) << "'depdb dyndep' call is here"; } // Move the script body to the end of the depdb preamble. @@ -885,11 +893,11 @@ namespace build2 } void parser:: - execute_body (const scope& bs, + execute_body (const scope& rs, const scope& bs, environment& e, const script& s, runner& r, bool enter, bool leave) { - pre_exec (*bs.root_scope (), bs, e, &s, &r); + pre_exec (rs, bs, e, &s, &r); if (enter) runner_->enter (e, s.start_loc); @@ -919,10 +927,13 @@ namespace build2 } void parser:: - exec_depdb_preamble (const scope& bs, + exec_depdb_preamble (action a, const scope& bs, const file& t, environment& e, const script& s, runner& r, lines_iterator begin, lines_iterator end, - depdb& dd, bool* update, optional<timestamp> mt) + depdb& dd, + bool* update, + bool* deferred_failure, + optional<timestamp> mt) { tracer trace ("exec_depdb_preamble"); @@ -938,12 +949,20 @@ namespace build2 struct { tracer& trace; + + action a; + const scope& bs; + const file& t; + environment& env; const script& scr; + depdb& dd; bool* update; + bool* deferred_failure; optional<timestamp> mt; - } data {trace, e, s, dd, update, mt}; + + } data {trace, a, bs, t, e, s, dd, update, deferred_failure, mt}; auto exec_cmd = [this, &data] (token& t, build2::script::token_type& tt, @@ -965,14 +984,17 @@ namespace build2 string cmd (move (t.value)); - if (cmd == "pre-dynamic") + if (cmd == "dyndep") { - exec_depdb_pre_dynamic (t, tt, - li, ll, - data.env.target, - data.dd, - *data.update, - *data.mt); + // Note: cast is safe since this is always executed in apply(). + // + exec_depdb_dyndep (t, tt, + li, ll, + data.a, data.bs, const_cast<file&> (data.t), + data.dd, + *data.update, + *data.deferred_failure, + *data.mt); } else { @@ -988,7 +1010,7 @@ namespace build2 l4 ([&] { data.trace (ll) << "'depdb hash' argument change forcing update of " - << data.env.target;}); + << data.t;}); } else if (cmd == "string") { @@ -1006,7 +1028,7 @@ namespace build2 l4 ([&] { data.trace (ll) << "'depdb string' argument change forcing update of " - << data.env.target;}); + << data.t;}); } else if (cmd == "env") { @@ -1031,7 +1053,7 @@ namespace build2 l4 ([&] { data.trace (ll) << "'depdb env' environment change forcing update of " - << data.env.target;}); + << data.t;}); } else assert (false); @@ -1157,15 +1179,12 @@ namespace build2 } names parser:: - execute_special (const scope& bs, + execute_special (const scope& rs, const scope& bs, environment& e, const line& ln, bool omit_builtin) { - pre_exec (*bs.root_scope (), bs, - e, - nullptr /* script */, - nullptr /* runner */); + pre_exec (rs, bs, e, nullptr /* script */, nullptr /* runner */); // Copy the tokens and start playing. // @@ -1182,113 +1201,415 @@ namespace build2 } void parser:: - exec_depdb_pre_dynamic (token& t, build2::script::token_type& tt, - size_t li, const location& ll, - const target& tgt, - depdb& dd, - bool& update, - timestamp /*mt*/) + exec_depdb_dyndep (token& lt, build2::script::token_type& ltt, + size_t li, const location& ll, + action a, const scope& bs, file& t, + depdb& dd, + bool& update, + bool& deferred_failure, + timestamp mt) { + tracer trace ("exec_depdb_dyndep"); + + context& ctx (t.ctx); + // Similar approach to parse_env_builtin(). // - next (t, tt); // Skip 'dep' command. - - // Note that an option name and value can belong to different name - // chunks. That's why we parse the arguments in the chunking mode into - // the list up to the `--` separator and parse this list into options - // afterwards. Note that the `--` separator should be omitted if there - // is no program (i.e., additional dependency info is being read from - // one of the prerequisites). - // - strings args; + depdb_dep_options ops; bool prog (false); - - names ns; // Reuse to reduce allocations. - while (tt != type::newline && tt != type::eos) { - if (tt == type::word && t.value == "--") - { - prog = true; - break; - } - - location l (get_location (t)); + auto& t (lt); + auto& tt (ltt); - if (!start_names (tt)) - fail (l) << "depdb pre-dynamic: expected option or '--' separator " - << "instead of " << t; + next (t, tt); // Skip 'dep' command. - parse_names (t, tt, - ns, - pattern_mode::ignore, - true /* chunk */, - "depdb pre-dynamic builtin argument", - nullptr); + // Note that an option name and value can belong to different name + // chunks. That's why we parse the arguments in the chunking mode + // into the list up to the `--` separator and parse this list into + // options afterwards. Note that the `--` separator should be + // omitted if there is no program (i.e., additional dependency info + // is being read from one of the prerequisites). + // + strings args; - for (name& n: ns) + names ns; // Reuse to reduce allocations. + while (tt != type::newline && tt != type::eos) { - try + if (tt == type::word && t.value == "--") { - args.push_back (convert<string> (move (n))); + prog = true; + break; } - catch (const invalid_argument&) + + location l (get_location (t)); + + if (!start_names (tt)) + fail (l) << "depdb dyndep: expected option or '--' separator " + << "instead of " << t; + + parse_names (t, tt, + ns, + pattern_mode::ignore, + true /* chunk */, + "depdb dyndep builtin argument", + nullptr); + + for (name& n: ns) { - diag_record dr (fail (l)); - dr << "invalid string value "; - to_stream (dr.os, n, true /* quote */); + try + { + args.push_back (convert<string> (move (n))); + } + catch (const invalid_argument&) + { + diag_record dr (fail (l)); + dr << "invalid string value "; + to_stream (dr.os, n, true /* quote */); + } } + + ns.clear (); } - ns.clear (); - } + if (prog) + { + next (t, tt); // Skip '--'. - if (prog) - { - next (t, tt); // Skip '--'. + if (tt == type::newline || tt == type::eos) + fail (t) << "depdb dyndep: expected program name instead of " + << t; + } - if (tt == type::newline || tt == type::eos) - fail (t) << "depdb pre-dynamic: expected program name instead of " - << t; + // Parse the options. + // + // We would like to support both -I <dir> as well as -I<dir> forms + // for better compatibility. The latter requires manual parsing. + // + try + { + for (cli::vector_scanner scan (args); scan.more (); ) + { + if (ops.parse (scan, cli::unknown_mode::stop) && !scan.more ()) + break; + + const char* a (scan.peek ()); + + // Handle -I<dir> + // + if (a[0] == '-' && a[1] == 'I') + { + try + { + ops.include_path ().push_back (dir_path (a + 2)); + } + catch (const invalid_path&) + { + throw cli::invalid_value ("-I", a + 2); + } + + scan.next (); + continue; + } + +#if 0 + // Handle --byproduct in the wrong place. + // + if (strcmp (a, "--byproduct") == 0) + fail (ll) << "depdb dyndep: --byproduct must be first option"; +#endif + + // Handle unknown option. + // + if (a[0] == '-') + throw cli::unknown_option (a); + + // Handle unexpected argument. + // + fail (ll) << "depdb dyndep: unexpected argument '" << a << "'"; + } + } + catch (const cli::exception& e) + { + fail (ll) << "depdb dyndep: " << e; + } } - // Parse the options. + // Get the default prerequisite type falling back to file{} if not + // specified. // - depdb_dep_options ops; - try + // The reason one would want to specify it is to make sure different + // rules "resolve" the same dynamic prerequisites to the same targets. + // For example, a rule that implements custom C compilation for some + // translation unit would want to make sure it resolves extracted + // system headers to h{} targets analogous to the c module's rule. + // + const target_type* def_pt; + if (ops.default_prereq_type_specified ()) { - cli::vector_scanner scan (args); - ops = depdb_dep_options (scan); + const string& t (ops.default_prereq_type ()); - if (scan.more ()) - fail (ll) << "depdb pre-dynamic: unexpected argument '" - << scan.next () << "'"; - } - catch (const cli::exception& e) - { - fail (ll) << "depdb pre-dynamic: " << e; + def_pt = bs.find_target_type (t); + if (def_pt == nullptr) + fail (ll) << "unknown target type '" << t << "'"; } + else + def_pt = &file::static_type; // This code is based on the prior work in the cc module (specifically // extract_headers()) where you can often find more detailed rationale // for some of the steps performed. + using dyndep = dyndep_rule; + + // Build the maps lazily, only if/when needed. + // + using prefix_map = dyndep::prefix_map; + using srcout_map = dyndep::srcout_map; + + function<dyndep::map_extension_func> map_ext ( + [] (const scope& bs, const string& n, const string& e) + { + // @@ TODO: allow specifying base target types. + // + // Feels like the only reason one would want to specify base types + // is to tighten things up (as opposed to making some setup work) + // since it essentially restricts the set of registered target + // types that we will consider. + // + // Note also that these would be this project's target types while + // the file could be from another project. + // + return dyndep::map_extension (bs, n, e, nullptr); + + // @@ TODO: should we return something as fallback (file{}, + // def_pt)? Note: not the same semantics as enter_file()'s + // fallback. Feels like it could conceivably be different + // (e.g., h{} for fallback and hxx{} for some "unmappable" gen + // header). It looks like the "best" way currently is to define + // a custom target types for it (see moc{} in libQt5Core). + // + // Note also that we should only do this if bs is in our + // project. + }); + + // Don't we want to insert a "local"/prefixless mapping in case the + // user did not specify any -I's? But then will also need src-out + // remapping. So it will be equivalent to -I$out_base -I$src_base? But + // then it's not hard to add explicitly... + // + function<dyndep::prefix_map_func> pfx_map; + + struct + { + tracer& trace; + const location& ll; + const depdb_dep_options& ops; + optional<prefix_map> map; + } pfx_data {trace, ll, ops, nullopt}; + + if (!ops.include_path ().empty ()) + { + pfx_map = [this, &pfx_data] (action, + const scope& bs, + const target& t) -> const prefix_map& + { + if (!pfx_data.map) + { + pfx_data.map = prefix_map (); + + const scope& rs (*bs.root_scope ()); + + for (dir_path d: pfx_data.ops.include_path ()) + { + if (d.relative ()) + fail (pfx_data.ll) << "depdb dyndep: relative include " + << "search path " << d; + + if (!d.normalized (false /* canonical dir seperators */)) + d.normalize (); + + // If we are not inside our project root, then ignore. + // + if (d.sub (rs.out_path ())) + dyndep::append_prefix ( + pfx_data.trace, *pfx_data.map, t, move (d)); + } + } + + return *pfx_data.map; + }; + } + + optional<path> file; + enum class format {make} fmt (format::make); + command_expr cmd; + srcout_map so_map; + + // Parse the remainder of the command line as a program (which can be + // a pipe). If file is absent, then we save the command's stdout to a + // pipe. Otherwise, assume the command writes to file and add it to + // the cleanups. + // + // Note that MSVC /showInclude sends its output to stderr (and so + // could do other broken tools). However, the user can always merge + // stderr to stdout (2>&1). + // + auto init_run = [this, &ctx, + <, <t, &ll, + &ops, prog, &file, &cmd, &so_map] () + { + // --format + // + if (ops.format_specified ()) + { + const string& f (ops.format ()); + + if (f != "make") + fail (ll) << "depdb dyndep: invalid --format option value '" + << f << "'"; + } + + // --file + // + if (ops.file_specified ()) + { + file = move (ops.file ()); + + if (file->relative ()) + fail (ll) << "depdb dyndep: relative path specified with --file"; + } + + // Populate the srcout map with the -I$out_base -I$src_base pairs. + // + { + dyndep::srcout_builder builder (ctx, so_map); + + for (dir_path d: ops.include_path ()) + builder.next (move (d)); + } + + if (prog) + { + cmd = parse_command_line (lt, static_cast<token_type&> (ltt)); + + // If the output goes to stdout, then this should be a single + // pipeline without any logical operators (&& or ||). + // + if (!file && cmd.size () != 1) + fail (ll) << "depdb dyndep: command with stdout output cannot " + << "contain logical operators"; + + // Note that we may need to run this command multiple times. The + // two potential issues here are the re-registration of the + // clenups and re-use of the special files (stdin, stdout, etc; + // they include the line index in their names to avoid clashes + // between lines). + // + // Cleanups are not an issue, they will simply replaced. And + // overriding the contents of the special files seems harmless and + // consistent with what would happen if the command redirects its + // output to a non-special file. + // + if (file) + environment_->clean ( + {build2::script::cleanup_type::always, *file}, + true /* implicit */); + } + else + { + // Assume file is one of the prerequisites. + // + if (!file) + fail (ll) << "depdb dyndep: program or --file expected"; + } + }; + + // Enter as a target, update, and add to the list of prerequisite + // targets a file. + // + const char* what (ops.what_specified () + ? ops.what ().c_str () + : "file"); + + size_t skip_count (0); + auto add = [this, &trace, what, + a, &bs, &t, + &map_ext, def_pt, &pfx_map, &so_map, + &dd, &skip_count] (path fp, + bool cache, + timestamp mt) -> optional<bool> + { + context& ctx (t.ctx); + + // We can only defer the failure if we will be running the recipe + // body. + // + auto fail = [this, what, &ctx] (const auto& f) -> optional<bool> + { + bool df (!ctx.match_only && !ctx.dry_run_option); + + diag_record dr; + dr << error << what << ' ' << f << " not found and no rule to " + << "generate it"; + + if (df) + dr << info << "failure deferred to recipe body diagnostics"; + + if (verb < 4) + dr << info << "re-run with --verbose=4 for more information"; + + if (df) + return nullopt; + else + dr << endf; + }; + + if (const build2::file* ft = dyndep::enter_file ( + trace, what, + a, bs, t, + move (fp), cache, false /* normalize */, + map_ext, *def_pt, pfx_map, so_map).first) + { + if (optional<bool> u = dyndep::inject_file ( + trace, what, + a, t, + *ft, mt, false /* fail */)) + { + if (!cache) + dd.expect (ft->path ()); + + skip_count++; + return *u; + } + else if (cache) + { + dd.write (); // Invalidate this line. + return true; + } + else + return fail (*ft); + } + else + return fail (fp); + }; + // If things go wrong (and they often do in this area), give the user // a bit extra context. // auto df = make_diag_frame ( - [this, &tgt](const diag_record& dr) + [this, &ll, &t] (const diag_record& dr) { if (verb != 0) - dr << info << "while extracting dynamic dependencies for " << tgt; + dr << info (ll) << "while extracting dynamic dependencies for " + << t; }); // If nothing so far has invalidated the dependency database, then try // the cached data before running the program. // bool cache (!update); - size_t skip_count (0); - for (bool restart (true); restart; cache = false) + for (bool restart (true), first_run (true); restart; cache = false) { restart = false; @@ -1314,62 +1635,212 @@ namespace build2 if (l->empty ()) // Done, nothing changed. return; + + if (optional<bool> r = add (path (move (*l)), true /*cache*/, mt)) + { + restart = *r; + + if (restart) + { + update = true; + l6 ([&]{trace << "restarting (cache)";}); + break; + } + } + else + { + // Trigger rebuild and mark as expected to fail. + // + update = true; + deferred_failure = true; + return; + } } } else { - } - } + if (first_run) + { + init_run (); + first_run = false; + } + else if (!prog) + { + fail (ll) << "generated " << what << " without program to retry"; + } - optional<path> file; - if (ops.file_specified ()) - { - file = path (ops.file ()); // @@ TMP path + // Save the timestamp just before we run the command. If we depend + // on any file that has been updated since, then we should assume + // we have "seen" the old copy and restart. + // + timestamp rmt (prog ? system_clock::now () : mt); - // @@ TODO: file must be absolute. - } + // Run the command if any and reduce outputs to common istream. + // + // Note that the resulting stream should tolerate partial read. + // + // While reading the entire stdout into a string is not the most + // efficient way to do it, this does simplify things quite a bit, + // not least of which is not having to parse the output before + // knowing the program exist status. + // + istringstream iss; + if (prog) + { + string s; + build2::script::run (*environment_, + cmd, + li, + ll, + !file ? &s : nullptr); + + if (!file) + { + iss.str (move (s)); + iss.exceptions (istream::badbit); + } + } - if (prog) - { - // Run the remainder of the command line as a program (which can be - // a pipe). If file is absent, then redirect the command's stdout to - // a pipe. Otherwise, assume the command writes to a file and add it - // to the cleanups. @@ TODO: reword - // - // Note that MSVC /showInclude sends its output to stderr (and so - // could do other broken tools). However, the user can always merge - // stderr to stdout (2>&1). - // - command_expr ce ( - parse_command_line (t, static_cast<token_type&> (tt))); + ifdstream ifs (ifdstream::badbit); + if (file) + try + { + ifs.open (*file); + } + catch (const io_error& e) + { + fail (ll) << "unable to open file " << *file << ": " << e; + } - // If the output goes to stdout, then this should be a single - // pipeline without any logical operators (&& or ||). - // - // @@ TODO: improve diagnostics. - // - if (!file && ce.size () != 1) - fail (ll) << "depdb pre-dynamic: command cannot contain " - << "logical operators"; - - string s; - build2::script::run (*environment_, - ce, - li, - ll, - !file ? &s : nullptr); - - if (file) - environment_->clean ({build2::script::cleanup_type::always, *file}, - true /* implicit */); - } - else - { - // Assume file is one of the prerequisites. - // - if (!file) - fail (ll) << "depdb pre-dynamic: program or --file expected"; + istream& is (file + ? static_cast<istream&> (ifs) + : static_cast<istream&> (iss)); + + const path_name& in (file + ? path_name (*file) + : path_name ("<stdin>")); + + location il (in, 1); + + // The way we parse things is format-specific. + // + size_t skip (skip_count); + + switch (fmt) + { + case format::make: + { + using make_state = make_parser; + using make_type = make_parser::type; + + make_parser make; + + for (string l; !restart; ++il.line) // Reuse the buffer. + { + if (eof (getline (is, l))) + { + if (make.state != make_state::end) + fail (il) << "incomplete make dependency declaration"; + + break; + } + + size_t pos (0); + do + { + pair<make_type, string> r; + { + auto df = make_diag_frame ( + [this, &l] (const diag_record& dr) + { + if (verb != 0) + dr << info << "while parsing make dependency " + << "declaration line '" << l << "'"; + }); + + r = make.next (l, pos, il, false /* strict */); + } + + if (r.second.empty ()) + continue; + + // @@ TODO: what should we do about targets? + // + // Note that if we take GCC as an example, things are + // quite messed up: by default it ignores -o and just + // takes the source file name and replaces the extension + // with a platform-appropriate object file extension. One + // can specify a custom target (or even multiple targets) + // with -MT or with -MQ (quoting). Though MinGW GCC still + // does not quote `:` with -MQ. So in this case it's + // definitely easier for the user to ignore the targets + // and just specify everything in the buildfile. + // + // On the other hand, other tools are likely to produce + // more sensible output (except perhaps for quoting). + // + // @@ Maybe in the lax mode we should only recognize `:` + // if it's separated on at least one side? + // + // Alternatively, we could detect Windows drives in + // paths and "handle" them (I believe this is what GNU + // make does). Maybe we should have three formats: + // make-lax, make, make-strict? + // + if (r.first == make_type::target) + continue; + + // Skip until where we left off. + // + if (skip != 0) + { + skip--; + continue; + } + + if (optional<bool> u = add (path (move (r.second)), + false /* cache */, + rmt)) + { + restart = *u; + + if (restart) + { + update = true; + l6 ([&]{trace << "restarting";}); + break; + } + } + else + { + // Trigger recompilation, mark as expected to fail, and + // bail out. + // + update = true; + deferred_failure = true; + break; + } + } + while (pos != l.size ()); + + if (make.state == make_state::end || deferred_failure) + break; + } + + break; + } + } + + // Bail out early if we have deferred a failure. + // + if (deferred_failure) + return; + } } + + // Add the terminating blank line (we are updating depdb). + // + dd.expect (""); } // When add a special variable don't forget to update lexer::word(). diff --git a/libbuild2/build/script/parser.hxx b/libbuild2/build/script/parser.hxx index f957f82..da15509 100644 --- a/libbuild2/build/script/parser.hxx +++ b/libbuild2/build/script/parser.hxx @@ -81,13 +81,16 @@ namespace build2 // initialize/clean up the environment before/after the script // execution. // + // Note: having both root and base scopes for testing (where we pass + // global scope for both). + // void - execute_body (const scope& base, + execute_body (const scope& root, const scope& base, environment&, const script&, runner&, bool enter = true, bool leave = true); - // Execute the first or the second (pre-dynamic) half of the depdb + // Execute the first or the second (dyndep) half of the depdb // preamble. // // Note that it's the caller's responsibility to make sure that the @@ -95,33 +98,33 @@ namespace build2 // command execution and leave() -- after the last command. // void - execute_depdb_preamble (const scope& base, + execute_depdb_preamble (action a, const scope& base, const file& t, environment& e, const script& s, runner& r, depdb& dd) { auto b (s.depdb_preamble.begin ()); exec_depdb_preamble ( - base, + a, base, t, e, s, r, b, - (s.depdb_pre_dynamic - ? b + *s.depdb_pre_dynamic + (s.depdb_dyndep + ? b + *s.depdb_dyndep : s.depdb_preamble.end ()), dd); } void - execute_depdb_preamble_dynamic ( - const scope& base, + execute_depdb_preamble_dyndep ( + action a, const scope& base, file& t, environment& e, const script& s, runner& r, - depdb& dd, bool& update, timestamp mt) + depdb& dd, bool& update, bool& deferred_failure, timestamp mt) { exec_depdb_preamble ( - base, + a, base, t, e, s, r, - s.depdb_preamble.begin () + *s.depdb_pre_dynamic, + s.depdb_preamble.begin () + *s.depdb_dyndep, s.depdb_preamble.end (), - dd, &update, mt); + dd, &update, &deferred_failure, mt); } // Parse a special builtin line into names, performing the variable @@ -129,7 +132,7 @@ namespace build2 // builtin name from the result. // names - execute_special (const scope& base, + execute_special (const scope& root, const scope& base, environment&, const line&, bool omit_builtin = true); @@ -157,20 +160,22 @@ namespace build2 exec_special (token&, build2::script::token_type&, bool skip_first); void - exec_depdb_preamble (const scope& base, + exec_depdb_preamble (action, const scope& base, const file&, environment&, const script&, runner&, lines_iterator begin, lines_iterator end, depdb&, bool* update = nullptr, + bool* deferred_failure = nullptr, optional<timestamp> mt = nullopt); void - exec_depdb_pre_dynamic (token&, build2::script::token_type&, - size_t line_index, const location&, - const target&, - depdb&, - bool& update, - timestamp); + exec_depdb_dyndep (token&, build2::script::token_type&, + size_t line_index, const location&, + action, const scope& base, file&, + depdb&, + bool& update, + bool& deferred_failure, + timestamp); // Helpers. // @@ -269,13 +274,13 @@ namespace build2 // depdb env <var-names> - Track the environment variables change as a // hash. // - // depdb pre-dynamic ... - Extract dynamic dependency information. + // depdb dyndep ... - Extract dynamic dependency information. // Can only be the last depdb builtin call // in the preamble. // optional<location> depdb_clear_; // depdb-clear location. optional<pair<location, size_t>> - depdb_pre_dynamic_; // depdb-pre-dynamic location. + depdb_dyndep_; // depdb-dyndep location/position. lines depdb_preamble_; // Note: excluding depdb-clear. // If present, the first impure function called in the body of the diff --git a/libbuild2/build/script/script.hxx b/libbuild2/build/script/script.hxx index bdfbe51..9d7567c 100644 --- a/libbuild2/build/script/script.hxx +++ b/libbuild2/build/script/script.hxx @@ -75,7 +75,7 @@ namespace build2 // script parser for details). // bool depdb_clear; - optional<size_t> depdb_pre_dynamic; // Position of first pre-dynamic. + optional<size_t> depdb_dyndep; // Position of first depdb-dyndep. lines_type depdb_preamble; bool depdb_preamble_temp_dir = false; // True if refs $~. diff --git a/libbuild2/build/script/types-parsers.cxx b/libbuild2/build/script/types-parsers.cxx new file mode 100644 index 0000000..9ecfa13 --- /dev/null +++ b/libbuild2/build/script/types-parsers.cxx @@ -0,0 +1,56 @@ +// file : libbuild2/build/script/types-parsers.cxx -*- C++ -*- +// license : MIT; see accompanying LICENSE file + +#include <libbuild2/build/script/types-parsers.hxx> + +#include <libbuild2/build/script/builtin-options.hxx> // cli namespace + +namespace build2 +{ + namespace build + { + namespace script + { + namespace cli + { + template <typename T> + static void + parse_path (T& x, scanner& s) + { + const char* o (s.next ()); + + if (!s.more ()) + throw missing_value (o); + + const char* v (s.next ()); + + try + { + x = T (v); + + if (x.empty ()) + throw invalid_value (o, v); + } + catch (const invalid_path&) + { + throw invalid_value (o, v); + } + } + + void parser<path>:: + parse (path& x, bool& xs, scanner& s) + { + xs = true; + parse_path (x, s); + } + + void parser<dir_path>:: + parse (dir_path& x, bool& xs, scanner& s) + { + xs = true; + parse_path (x, s); + } + } + } + } +} diff --git a/libbuild2/build/script/types-parsers.hxx b/libbuild2/build/script/types-parsers.hxx new file mode 100644 index 0000000..a42dab7 --- /dev/null +++ b/libbuild2/build/script/types-parsers.hxx @@ -0,0 +1,49 @@ +// file : libbuild2/build/script/types-parsers.hxx -*- C++ -*- +// license : MIT; see accompanying LICENSE file + +// CLI parsers, included into the generated source files. +// + +#ifndef LIBBUILD2_BUILD_SCRIPT_TYPES_PARSERS_HXX +#define LIBBUILD2_BUILD_SCRIPT_TYPES_PARSERS_HXX + +#include <libbuild2/types.hxx> + +namespace build2 +{ + namespace build + { + namespace script + { + namespace cli + { + class scanner; + + template <typename T> + struct parser; + + template <> + struct parser<path> + { + static void + parse (path&, bool&, scanner&); + + static void + merge (path& b, const path& a) {b = a;} + }; + + template <> + struct parser<dir_path> + { + static void + parse (dir_path&, bool&, scanner&); + + static void + merge (dir_path& b, const dir_path& a) {b = a;} + }; + } + } + } +} + +#endif // LIBBUILD2_BUILD_SCRIPT_TYPES_PARSERS_HXX |