diff options
Diffstat (limited to 'staptree.h')
| -rw-r--r-- | staptree.h | 22 |
1 files changed, 18 insertions, 4 deletions
@@ -1,5 +1,5 @@ // -*- C++ -*- -// Copyright (C) 2005-2009 Red Hat Inc. +// Copyright (C) 2005-2010 Red Hat Inc. // Copyright (C) 2006 Intel Corporation. // // This file is part of systemtap, and is free software. You can @@ -254,7 +254,7 @@ struct target_symbol: public symbol bool addressof; std::string base_name; std::vector<component> components; - std::string probe_context_var; + std::string probe_context_var; // NB: this being set implies that target_symbol is *resolved* semantic_error* saved_conversion_error; target_symbol(): addressof(false), saved_conversion_error (0) {} void print (std::ostream& o) const; @@ -276,6 +276,14 @@ struct cast_op: public target_symbol }; +struct defined_op: public expression +{ + target_symbol *operand; + void print (std::ostream& o) const; + void visit (visitor* u); +}; + + struct arrayindex: public expression { std::vector<expression*> indexes; @@ -720,6 +728,7 @@ struct visitor virtual void visit_stat_op (stat_op* e) = 0; virtual void visit_hist_op (hist_op* e) = 0; virtual void visit_cast_op (cast_op* e) = 0; + virtual void visit_defined_op (defined_op* e) = 0; }; @@ -761,6 +770,7 @@ struct traversing_visitor: public visitor void visit_stat_op (stat_op* e); void visit_hist_op (hist_op* e); void visit_cast_op (cast_op* e); + void visit_defined_op (defined_op* e); }; @@ -803,6 +813,7 @@ struct varuse_collecting_visitor: public functioncall_traversing_visitor void visit_post_crement (post_crement *e); void visit_foreach_loop (foreach_loop *s); void visit_cast_op (cast_op* e); + void visit_defined_op (defined_op* e); bool side_effect_free (); bool side_effect_free_wrt (const std::set<vardecl*>& vars); @@ -853,6 +864,7 @@ struct throwing_visitor: public visitor void visit_stat_op (stat_op* e); void visit_hist_op (hist_op* e); void visit_cast_op (cast_op* e); + void visit_defined_op (defined_op* e); }; // A visitor similar to a traversing_visitor, but with the ability to rewrite @@ -867,7 +879,7 @@ struct update_visitor: public visitor { src->visit(this); assert(!targets.empty()); - dst = static_cast<T*>(targets.top()); + dst = static_cast<T*>(targets.top()); // XXX: danger will robinson: not typesafe! targets.pop(); assert(clearok || dst); } @@ -876,7 +888,7 @@ struct update_visitor: public visitor template <typename T> void provide (T* src) { - targets.push(static_cast<void*>(src)); + targets.push(static_cast<void*>(src)); // XXX: not typesafe! } template <typename T> void replace (T*& src, bool clearok=false) @@ -919,6 +931,7 @@ struct update_visitor: public visitor virtual void visit_stat_op (stat_op* e); virtual void visit_hist_op (hist_op* e); virtual void visit_cast_op (cast_op* e); + virtual void visit_defined_op (defined_op* e); private: std::stack<void *> targets; @@ -974,6 +987,7 @@ struct deep_copy_visitor: public update_visitor virtual void visit_stat_op (stat_op* e); virtual void visit_hist_op (hist_op* e); virtual void visit_cast_op (cast_op* e); + virtual void visit_defined_op (defined_op* e); }; #endif // STAPTREE_H |