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authorKaren Arutyunov <karen@codesynthesis.com>2017-03-29 00:45:30 +0300
committerKaren Arutyunov <karen@codesynthesis.com>2017-04-04 13:35:14 +0300
commitdd973d03bf5f3f439dcdacbb22470105e66e698a (patch)
tree6856ab313c75f3459df80511c98d3f788bf1c22b /bbot/build-config.cxx
parentc72bbd5d04084547c53e9593af4d76d9e5135a53 (diff)
Implement manifests and build_config
Diffstat (limited to 'bbot/build-config.cxx')
-rw-r--r--bbot/build-config.cxx121
1 files changed, 121 insertions, 0 deletions
diff --git a/bbot/build-config.cxx b/bbot/build-config.cxx
new file mode 100644
index 0000000..226ead3
--- /dev/null
+++ b/bbot/build-config.cxx
@@ -0,0 +1,121 @@
+// file : bbot/build-config.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <bbot/build-config>
+
+#include <string>
+#include <cstddef> // size_t
+#include <utility> // move()
+#include <stdexcept> // invalid_argument
+
+#include <butl/path>
+#include <butl/fdstream>
+#include <butl/tab-parser>
+
+using namespace std;
+using namespace butl;
+
+namespace bbot
+{
+ LIBBBOT_EXPORT build_configs
+ parse_buildtab (istream& is, const string& name)
+ {
+ build_configs r;
+ tab_parser parser (is, name);
+
+ tab_fields tl;
+ while (!(tl = parser.next ()).empty ())
+ {
+ size_t n (tl.size ()); // Fields count.
+ size_t i (0); // The field currently being processed.
+
+ // Throw tab_parsing for the field currently being processed. If i == n
+ // then we refer to the end-of-line column (presumably reporting a missed
+ // field).
+ //
+ auto bad_line = [&name, &tl, &i, n] (const string& d, size_t offset = 0)
+ {
+ // Offset beyond the end-of-line is meaningless.
+ //
+ assert (i < n || (i == n && offset == 0));
+
+ throw tab_parsing (name,
+ tl.line,
+ i == n
+ ? tl.end_column
+ : tl[i].column + offset,
+ d);
+ };
+
+ build_config config;
+ config.machine_pattern = move (tl[i++].value);
+
+ // Configuration name field is a required one.
+ //
+ if (i == n)
+ bad_line ("no configuration name found");
+
+ config.name = move (tl[i].value);
+
+ // Make sure the name is unique.
+ //
+ for (const auto& c: r)
+ if (c.name == config.name)
+ bad_line ("duplicate configuration name");
+
+ // If there is no target nor configuration variables then save the
+ // configuration and proceed with the next line.
+ //
+ if (++i == n)
+ {
+ r.emplace_back (move (config));
+ continue;
+ }
+
+ // If the third field doesn't contain '=' character, then we will treat
+ // it as a target.
+ //
+ if (tl[i].value.find ('=') == string::npos)
+ {
+ try
+ {
+ config.target = target_triplet (tl[i].value);
+ }
+ catch (const invalid_argument& e)
+ {
+ bad_line (e.what ());
+ }
+
+ ++i;
+ }
+
+ try
+ {
+ for (; i < n; ++i)
+ config.vars.emplace_back (variable (move (tl[i].value)));
+ }
+ catch (const invalid_variable& e)
+ {
+ bad_line (e.what (), e.pos); // Note that tl[i].value is moved from,
+ // but happily we don't use it
+ }
+
+ // Save the configuration.
+ //
+ r.emplace_back (move (config));
+ }
+
+ return r;
+ }
+
+ build_configs
+ parse_buildtab (const path& p)
+ {
+ ifdstream ifs (p);
+ build_configs r (parse_buildtab (ifs, p.string ()));
+
+ ifs.close (); // Throws on failure.
+ return r;
+ }
+}