| /******************************************************************** |
| * |
| * BEGIN DATE: Mar, 2012 |
| * |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| THE SOFTWARE. |
| ********************************************************************/ |
| |
| #ifndef VARIABLEASSIGNMENT_H_ |
| #define VARIABLEASSIGNMENT_H_ |
| |
| // A pair of constants of the same bit-width assigned to v and w.. |
| |
| struct VariableAssignment |
| { |
| private: |
| ASTNode v; |
| ASTNode w; |
| bool empty; |
| |
| public: |
| ASTNode getV() const |
| { |
| assert(!empty); |
| return v; |
| } |
| |
| ASTNode getW() const |
| { |
| assert(!empty); |
| return w; |
| } |
| |
| void setValues(const ASTNode& nv, const ASTNode& nw) |
| { |
| assert(nv.isConstant()); |
| assert(nw.isConstant()); |
| assert(nw.GetValueWidth() == nv.GetValueWidth()); |
| w = nw; |
| v = nv; |
| empty = false; |
| } |
| |
| VariableAssignment() { empty = true; } |
| }; |
| |
| #endif |