diff options
Diffstat (limited to 'libbuild2/script/parser.cxx')
| -rw-r--r-- | libbuild2/script/parser.cxx | 111 |
1 files changed, 82 insertions, 29 deletions
diff --git a/libbuild2/script/parser.cxx b/libbuild2/script/parser.cxx index 84d2afc..a82ccb8 100644 --- a/libbuild2/script/parser.cxx +++ b/libbuild2/script/parser.cxx @@ -2460,19 +2460,19 @@ namespace build2 // struct loop_data { - lines::const_iterator i; - lines::const_iterator e; const function<exec_set_function>& exec_set; const function<exec_cmd_function>& exec_cmd; const function<exec_cond_function>& exec_cond; const function<exec_for_function>& exec_for; + lines::const_iterator i; + lines::const_iterator e; const iteration_index* ii; size_t& li; variable_pool* var_pool; decltype (fcend)& fce; lines::const_iterator& fe; - } ld {i, e, - exec_set, exec_cmd, exec_cond, exec_for, + } ld {exec_set, exec_cmd, exec_cond, exec_for, + i, e, ii, li, var_pool, fcend, @@ -2558,7 +2558,6 @@ namespace build2 const location& ll; size_t fli; iteration_index& fi; - } d {ld, env, vname, attrs, ll, fli, fi}; function<void (string&&)> f ( @@ -2676,12 +2675,19 @@ namespace build2 if (val) { - // If this value is a vector, then save its element type so + // If the value type provides custom iterate function, then + // use that (see value_type::iterate for details). + // + auto iterate (val.type != nullptr + ? val.type->iterate + : nullptr); + + // If this value is a container, then save its element type so // that we can typify each element below. // const value_type* etype (nullptr); - if (val.type != nullptr) + if (!iterate && val.type != nullptr) { etype = val.type->element_type; @@ -2693,37 +2699,84 @@ namespace build2 size_t fli (li); iteration_index fi {1, ii}; - names& ns (val.as<names> ()); - for (auto ni (ns.begin ()), ne (ns.end ()); ni != ne; ++ni) + names* ns (!iterate ? &val.as<names> () : nullptr); + + // Similar to above. + // + struct loop_data + { + const function<exec_set_function>& exec_set; + const function<exec_cmd_function>& exec_cmd; + const function<exec_cond_function>& exec_cond; + const function<exec_for_function>& exec_for; + lines::const_iterator i; + lines::const_iterator e; + const location& ll; + size_t& li; + variable_pool* var_pool; + const variable& var; + const attributes& val_attrs; + decltype (fcend)& fce; + lines::const_iterator& fe; + iteration_index& fi; + + } ld {exec_set, exec_cmd, exec_cond, exec_for, + i, e, + ll, li, + var_pool, *var, val_attrs, + fcend, fe, fi}; + + function<bool (value&&, bool first)> iteration = + [this, &ld] (value&& v, bool) { - li = fli; + ld.exec_for (ld.var, move (v), ld.val_attrs, ld.ll); - // Set the variable value. + // Find the construct end, if it is not found yet. // - bool pair (ni->pair); - names n; - n.push_back (move (*ni)); - if (pair) n.push_back (move (*++ni)); - value v (move (n)); // Untyped. + if (ld.fe == ld.e) + ld.fe = ld.fce (ld.i, true, false); + + if (!exec_lines ( + ld.i + 1, ld.fe, + ld.exec_set, ld.exec_cmd, ld.exec_cond, ld.exec_for, + &ld.fi, ld.li, + ld.var_pool)) + return false; + + ld.fi.index++; + return true; + }; - if (etype != nullptr) - typify (v, *etype, var); + if (!iterate) + { + for (auto nb (ns->begin ()), ni (nb), ne (ns->end ()); + ni != ne; + ++ni) + { + bool first (ni == nb); - exec_for (*var, move (v), val_attrs, ll); + li = fli; - // Find the construct end, if it is not found yet. - // - if (fe == e) - fe = fcend (i, true, false); + // Set the variable value. + // + bool pair (ni->pair); + names n; + n.push_back (move (*ni)); + if (pair) n.push_back (move (*++ni)); + value v (move (n)); // Untyped. - if (!exec_lines (i + 1, fe, - exec_set, exec_cmd, exec_cond, exec_for, - &fi, li, - var_pool)) - return false; + if (etype != nullptr) + typify (v, *etype, var); - fi.index++; + if (!iteration (move (v), first)) + return false; + } + } + else + { + if (!iterate (val, iteration)) + return false; } } |