| 116 | } |
| 117 | |
| 118 | bool run(const unsigned *byte_code, const float *variables, Stack &stack, ComputeFunction compute_function) |
| 119 | { |
| 120 | if (compute_function == NULL) |
| 121 | compute_function = default_compute_function; |
| 122 | |
| 123 | const unsigned *p = byte_code; |
| 124 | while (true) { |
| 125 | unsigned bc = *p++; |
| 126 | unsigned op = bc_mask(bc); |
| 127 | unsigned id = id_mask(bc); |
| 128 | switch (op) { |
| 129 | case BC_PUSH_VAR: |
| 130 | if (stack.size == stack.capacity) return false; |
| 131 | stack.data[stack.size++] = variables[id]; |
| 132 | break; |
| 133 | case BC_FUNCTION: |
| 134 | compute_function((OpCode)id, stack); |
| 135 | break; |
| 136 | case BC_END: |
| 137 | return true; |
| 138 | default: // BC_PUSH_FLOAT |
| 139 | if (stack.size == stack.capacity) return false; |
| 140 | stack.data[stack.size++] = unsigned_to_float(bc); |
| 141 | break; |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | } // namespace expression_language |
| 147 | |