system for looking up static symbols

 * symbols are extracted from C header files by a TECO macro
 * macro is executed using a "minimal" version of SciTECO that does not include symbols (uses gcc's weak symbols)
 * the generated C++ code contains the symbol-name-to-define mapping as a constant sorted array and initializes the appropriate SymbolList object
 * a symbol lookup is super fast using a simple binary search in the symbol lists
 * except for object initialization, no there's no overhead for keeping the symbol lists!
 * build process is complicated by introduction of bootstrapping via sciteco-minimal

1 files changed, 29 insertions, 0 deletions

diff --git a/symbols.h b/symbols.h
new file mode 100644
index 0000000..735fdda
--- /dev/null
+++ b/symbols.h
@@ -0,0 +1,29 @@
+#ifndef __SYMBOLS_H
+#define __SYMBOLS_H
+
+#include <glib.h>
+
+class SymbolList {
+public:
+	struct Entry {
+		const gchar	*name;
+		gint		value;
+	};
+
+private:
+	const Entry	*entries;
+	gint		size;
+
+public:
+	SymbolList(const Entry *_entries = NULL, gint _size = 0)
+		  : entries(_entries), size(_size) {}
+
+	gint lookup(const gchar *name);
+	GList *get_glist(void);
+};
+
+namespace Symbols {
+	extern SymbolList __attribute__((weak)) scintilla;
+}
+
+#endif