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scope_walker.h
Go to the documentation of this file.00001 // $Id: scope_walker.h,v 1.6 2003/09/09 20:51:53 toktb Exp $ 00002 // ---------------------------------------------------------------------- 00003 // 00004 // C-Breeze 00005 // C Compiler Framework 00006 // 00007 // Copyright (c) 2000 University of Texas at Austin 00008 // 00009 // Samuel Z. Guyer 00010 // Daniel A. Jimenez 00011 // Calvin Lin 00012 // 00013 // Permission is hereby granted, free of charge, to any person 00014 // obtaining a copy of this software and associated documentation 00015 // files (the "Software"), to deal in the Software without 00016 // restriction, including without limitation the rights to use, copy, 00017 // modify, merge, publish, distribute, sublicense, and/or sell copies 00018 // of the Software, and to permit persons to whom the Software is 00019 // furnished to do so, subject to the following conditions: 00020 // 00021 // The above copyright notice and this permission notice shall be 00022 // included in all copies or substantial portions of the Software. 00023 // 00024 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00025 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00026 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00027 // NONINFRINGEMENT. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT 00028 // AUSTIN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 00029 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 00030 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00031 // THE SOFTWARE. 00032 // 00033 // We acknowledge the C-to-C Translator from MIT Laboratory for 00034 // Computer Science for inspiring parts of the C-Breeze design. 00035 // 00036 // ---------------------------------------------------------------------- 00037 00038 #ifndef CBZ_SCOPE_WALKER_H 00039 #define CBZ_SCOPE_WALKER_H 00040 00041 00045 class scope_walker : public Walker 00046 { 00047 private: 00048 00049 unitNode * _unit; 00050 00051 Identifiers_table * _ids; 00052 Tags_table * _tags; 00053 Externals_table * _externs; 00054 int _symbol_level; 00055 00056 int _in_su; 00057 int _in_enum; 00058 int _in_formals; 00059 00060 protected: 00061 procNode * _cur_proc; 00062 00063 public: 00064 00065 scope_walker(unitNode * u); 00066 virtual ~scope_walker(); 00067 00069 virtual void at_proc(procNode * the_proc, Order ord); 00070 virtual void at_block(blockNode * the_block, Order ord); 00071 00076 virtual void at_suespec(suespecNode * the_suespec, Order ord); 00077 virtual void at_func(funcNode * the_func, Order ord); 00084 inline Identifiers_table * ids() const { return _ids; } 00085 inline Tags_table * tags() const { return _tags; } 00086 inline Externals_table * externs() const { return _externs; } 00087 inline int symbol_level() const { return _symbol_level; } 00094 inline bool in_su() const { return _in_su != 0; } 00095 inline bool in_enum() const { return _in_enum; } 00096 inline bool in_formals() const { return _in_formals != 0; } 00099 00100 inline unitNode * unit() { return _unit; } 00101 00106 void enter_scope(); 00107 void exit_scope(); 00109 }; 00110 00111 00112 #endif // CBZ_SCOPE_WALKER_H