Hackily rewrite Lua chunk errors to reflect line numbers from the original

.des file so that level-designers can find the lines that are causing the 
problem.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1641 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 6 insertions, 2 deletions

diff --git a/crawl-ref/source/luadgn.h b/crawl-ref/source/luadgn.h
index 199939dad2..f8b272f544 100644
--- a/crawl-ref/source/luadgn.h
+++ b/crawl-ref/source/luadgn.h
@@ -18,16 +18,19 @@ class dlua_chunk
 private:
     std::string file;
     std::string chunk;
+    std::string context;
     int first, last;     // First and last lines of the original source.
 
 private:
     int check_op(CLua *, int);
+    std::string rewrite_chunk_prefix(const std::string &line) const;
+    std::string get_chunk_prefix(const std::string &s) const;
     
 public:
     std::string error;
 
 public:
-    dlua_chunk();
+    dlua_chunk(const std::string &_context = "dlua_chunk");
     void clear();
     void add(int line, const std::string &line);
     void set_chunk(const std::string &s);
@@ -38,7 +41,8 @@ public:
 
     const std::string &lua_string() const { return chunk; }
     std::string orig_error() const;
-
+    bool rewrite_chunk_errors(std::string &err) const;
+    
     bool empty() const;
 };