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C-Breeze C Compiler Infrastructure [ Project home page] |
enum_value_walker.cc
Go to the documentation of this file.00001 // $Id: enum_value_walker.cc,v 1.4 2003/08/07 23:13:44 pnav 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 #include "c_breeze.h" 00039 #include "enum_value_walker.h" 00040 00041 // WARNING: This is only temporary. The evaluation of the initializers 00042 // must be more general and powerful. This functionality should be 00043 // integrated into the semantic checker. 00044 00045 void enum_value_walker::assign(Node * n) 00046 { 00047 enum_value_walker evw; 00048 00049 n->walk(evw); 00050 } 00051 00052 void enum_value_walker::at_enum(enumNode * the_enum, Order ord) 00053 { 00054 if (the_enum->elaborated()) { 00055 decl_list & decls = the_enum->spec()->fields(); 00056 int cur_val = 0; // First enum defaults to zero 00057 char buf[32]; 00058 00059 for (decl_list_p p = decls.begin(); 00060 p != decls.end(); 00061 ++p) 00062 { 00063 declNode * cur = *p; 00064 00065 if (cur->init()) { 00066 exprNode * e = cur->init(); 00067 e->eval(); 00068 if (e->value().basic().is_integer()) { 00069 cur_val = e->value().Integer(); 00070 } 00071 else 00072 break; 00073 } 00074 else { 00075 sprintf(buf,"%d",cur_val); 00076 constNode * val = new constNode(constant(cur_val), 00077 buf, the_enum->coord()); 00078 cur->init(val); 00079 } 00080 cur_val++; 00081 } 00082 } 00083 }