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// file : bdep/new-parsers.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <bdep/new-parsers.hxx>
#include <bdep/new-options.hxx> // bdep::cli namespace, cmd_new_*_options
namespace bdep
{
namespace cli
{
using type = cmd_new_type;
using lang = cmd_new_lang;
using vcs = cmd_new_vcs;
// Parse comma-separated list of of options starting from the first comma
// at pos, merging them with options parsed previously.
//
template <typename O>
static void
parse_options (const char* o, const string v, size_t pos, O& r)
{
// Use vector_scanner to parse the comma-separated list of
// parameter-specific options. Make sure that option values are only
// specified if required (no value for flags, etc).
//
vector<string> os;
const options& ods (O::description ());
for (size_t i (pos), j; i != string::npos; )
{
j = i + 1;
i = v.find (',', j);
string po (v, j, i != string::npos ? i - j : i);
// Split the parameter-specific option into the name and value.
//
optional<string> pv;
{
size_t i (po.find ('='));
if (i != string::npos)
{
pv = string (po, i + 1);
po.resize (i);
}
}
// Verify that the option is known and its value is only specified if
// required.
//
{
auto i (ods.find (po));
if (i == ods.end ())
throw invalid_value (o, po);
bool flag (!pv);
if (flag != i->flag ())
throw invalid_value (o,
po,
string (flag ? "missing" : "unexpected") +
" value for '" + po + "'");
}
os.push_back (move (po));
if (pv)
os.push_back (move (*pv));
}
vector_scanner s (os);
r.parse (s);
}
void parser<type>::
parse (type& r, bool& xs, scanner& s)
{
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
string v (s.next ());
size_t i (v.find (','));
string l (v, 0, i);
if (l == "exe")
{
r.type = type::exe;
parse_options<cmd_new_exe_options> (o, v, i, r.exe_opt);
}
else if (l == "lib")
{
r.type = type::lib;
parse_options<cmd_new_lib_options> (o, v, i, r.lib_opt);
}
else if (l == "bare")
{
r.type = type::bare;
parse_options<cmd_new_bare_options> (o, v, i, r.bare_opt);
}
else if (l == "empty")
{
r.type = type::empty;
parse_options<cmd_new_empty_options> (o, v, i, r.empty_opt);
}
else
throw invalid_value (o, l);
xs = true;
}
void parser<lang>::
parse (lang& r, bool& xs, scanner& s)
{
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
string v (s.next ());
size_t i (v.find (','));
string l (v, 0, i);
if (l == "c")
{
r.lang = lang::c;
parse_options<cmd_new_c_options> (o, v, i, r.c_opt);
}
else if (l == "c++")
{
r.lang = lang::cxx;
parse_options<cmd_new_cxx_options> (o, v, i, r.cxx_opt);
}
else
throw invalid_value (o, l);
xs = true;
}
void parser<vcs>::
parse (vcs& r, bool& xs, scanner& s)
{
const char* o (s.next ());
if (!s.more ())
throw missing_value (o);
string v (s.next ());
size_t i (v.find (','));
string l (v, 0, i);
if (l == "git")
{
r.vcs = vcs::git;
parse_options<cmd_new_git_options> (o, v, i, r.git_opt);
}
else if (l == "none")
{
r.vcs = vcs::none;
parse_options<cmd_new_none_options> (o, v, i, r.none_opt);
}
else
throw invalid_value (o, l);
xs = true;
}
}
}
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