New ast module for for npc parsing

Will eventually put most/all parsers there.

1 files changed, 71 insertions, 0 deletions

diff --git a/src/ast/script.cpp b/src/ast/script.cpp
new file mode 100644
index 0000000..cc67224
--- /dev/null
+++ b/src/ast/script.cpp
@@ -0,0 +1,71 @@
+#include "script.hpp"
+//    ast/script.cpp - Structure of tmwa-script
+//
+//    Copyright © 2014 Ben Longbons <b.r.longbons@gmail.com>
+//
+//    This file is part of The Mana World (Athena server)
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Affero General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//    This program is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU Affero General Public License for more details.
+//
+//    You should have received a copy of the GNU Affero General Public License
+//    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "../poison.hpp"
+
+
+namespace tmwa
+{
+namespace script
+{
+namespace parse
+{
+    Result<ScriptBody> parse_script_body(io::LineCharReader& lr)
+    {
+        io::LineSpan span;
+        io::LineChar c;
+        while (true)
+        {
+            if (!lr.get(c))
+            {
+                return Err("error: unexpected EOF before '{' in parse_script_body"_s);
+            }
+            if (c.ch() == ' ' || c.ch() == '\n')
+            {
+                lr.adv();
+                continue;
+            }
+            break;
+        }
+        if (c.ch() != '{')
+        {
+            return Err(c.error_str("expected opening '{'"_s));
+        }
+
+        MString accum;
+        accum += c.ch();
+        span.begin = c;
+        lr.adv();
+        while (true)
+        {
+            if (!lr.get(c))
+                return Err(c.error_str("unexpected EOF before '}' in parse_script_body"_s));
+            accum += c.ch();
+            span.end = c;
+            lr.adv();
+            if (c.ch() == '}')
+            {
+                return Ok(ScriptBody{RString(accum), std::move(span)});
+            }
+        }
+    }
+} // namespace parse
+} // namespace script
+} // namespace tmwa