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#ifndef __GOTO_H
#define __GOTO_H
#include <glib.h>
#include <glib/gprintf.h>
#include "sciteco.h"
#include "parser.h"
#include "undo.h"
#include "rbtree.h"
class GotoTable : public RBTree {
class UndoTokenSet : public UndoToken {
GotoTable *table;
gchar *name;
gint pc;
public:
UndoTokenSet(GotoTable *_table, gchar *_name, gint _pc = -1)
: table(_table), name(g_strdup(_name)), pc(_pc) {}
~UndoTokenSet()
{
g_free(name);
}
void
run(void)
{
table->set(name, pc);
#ifdef DEBUG
table->dump();
#endif
}
};
class Label : public RBEntry {
public:
gchar *name;
gint pc;
Label(gchar *_name, gint _pc = -1)
: name(g_strdup(_name)), pc(_pc) {}
~Label()
{
g_free(name);
}
int
operator <(RBEntry &l2)
{
return g_strcmp0(name, ((Label &)l2).name);
}
};
/*
* whether to generate UndoTokens (unnecessary in macro invocations)
*/
bool must_undo;
public:
GotoTable(bool _undo = true) : RBTree(), must_undo(_undo) {}
gint remove(gchar *name);
gint find(gchar *name);
gint set(gchar *name, gint pc);
inline void
undo_set(gchar *name, gint pc = -1)
{
if (must_undo)
undo.push(new UndoTokenSet(this, name, pc));
}
#ifdef DEBUG
void dump(void);
#endif
};
namespace Goto {
extern GotoTable *table;
extern gchar *skip_label;
}
/*
* Command states
*/
class StateLabel : public State {
public:
StateLabel();
private:
State *custom(gchar chr) throw (Error);
};
class StateGotoCmd : public StateExpectString {
private:
State *done(const gchar *str) throw (Error);
};
namespace States {
extern StateLabel label;
extern StateGotoCmd gotocmd;
}
#endif
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