Add support for configuration classes in buildtab

2 files changed, 37 insertions, 4 deletions

diff --git a/libbbot/build-config.cxx b/libbbot/build-config.cxx
index 23935e3..de9a71d 100644
--- a/libbbot/build-config.cxx
+++ b/libbbot/build-config.cxx
@@ -12,6 +12,9 @@
 #include <libbutl/path.mxx>
 #include <libbutl/fdstream.mxx>
 #include <libbutl/tab-parser.mxx>
+#include <libbutl/string-parser.mxx>
+
+#include <libbpkg/manifest.hxx> // build_class_term::validate_name()
 
 #include <libbbot/manifest.hxx> // task_manifest::check_config()
 
@@ -53,7 +56,7 @@ namespace bbot
       build_config config;
       config.machine_pattern = move (tl[i++].value);
 
-      // Configuration name field is a required one.
+      // Configuration name, target and classes fields are the required ones.
       //
       if (i == n)
         bad_line ("no configuration name found");
@@ -80,6 +83,35 @@ namespace bbot
         bad_line (e.what ());
       }
 
+      if (++i == n)
+        bad_line ("no classes found");
+
+      // Parse a potentially quoted class list.
+      //
+      try
+      {
+        // We don't expect the class names be quotes as they cannot contain
+        // spaces.
+        //
+        using namespace string_parser;
+        config.classes = parse_quoted (unquote (tl[i].value),
+                                       false /* unquote */);
+
+        // Validate the class names.
+        //
+        for (const string& c: config.classes)
+        {
+          if (c == "none")
+            throw invalid_argument ("class 'none' is reserved");
+
+          bpkg::build_class_term::validate_name (c);
+        }
+      }
+      catch (const invalid_argument& e)
+      {
+        bad_line (e.what ());
+      }
+
       try
       {
         for (++i; i < n; ++i)
diff --git a/libbbot/build-config.hxx b/libbbot/build-config.hxx
index 7ff5eba..3f1c0cc 100644
--- a/libbbot/build-config.hxx
+++ b/libbbot/build-config.hxx
@@ -23,10 +23,11 @@ namespace bbot
   //
   struct build_config
   {
-    std::string machine_pattern;   // Machine name pattern.
-    std::string name;              // Configuration name.
+    std::string machine_pattern;      // Machine name pattern.
+    std::string name;                 // Configuration name.
     butl::target_triplet target;
-    std::vector<std::string> vars; // Note: quoting is preserved.
+    std::vector<std::string> classes;
+    std::vector<std::string> vars;    // Note: quoting is preserved.
 
     // Warning-detecting regular expressions. Note that quoting is preserved.
     //