| 1 | #!/usr/bin/env python2
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| 2 | """optview_gen.py."""
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| 3 | from __future__ import print_function
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| 4 |
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| 5 | import sys
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| 6 |
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| 7 | from frontend import option_def
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| 8 | #from core import optview
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| 9 |
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| 10 |
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| 11 | def GenMethods(opt_names, f):
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| 12 | for n in opt_names:
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| 13 | f.write(' bool %s() { return _Get(option_i::%s); }\n' % (n, n))
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| 14 |
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| 15 |
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| 16 | def main(argv):
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| 17 | f = sys.stdout
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| 18 |
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| 19 | f.write("""\
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| 20 | #ifndef OPTVIEW_H
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| 21 | #define OPTVIEW_H
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| 22 |
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| 23 | #include "_gen/frontend/option.asdl.h"
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| 24 | #include "mycpp/runtime.h"
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| 25 |
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| 26 | namespace optview {
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| 27 |
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| 28 | using option_asdl::option_i;
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| 29 |
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| 30 | class _View {
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| 31 | public:
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| 32 | _View(List<bool>* opt0_array, List<List<bool>*>* opt_stacks)
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| 33 | : opt0_array(opt0_array), opt_stacks(opt_stacks) {
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| 34 | }
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| 35 |
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| 36 | bool _Get(int opt_num) {
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| 37 | List<bool>* overlay = opt_stacks->at(opt_num);
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| 38 | if ((overlay == nullptr) or len(overlay) == 0) {
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| 39 | return opt0_array->at(opt_num);
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| 40 | } else {
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| 41 | return overlay->at(-1);
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| 42 | }
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| 43 | }
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| 44 |
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| 45 | static constexpr ObjHeader obj_header() {
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| 46 | return ObjHeader::ClassFixed(field_mask(), sizeof(_View));
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| 47 | }
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| 48 |
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| 49 | List<bool>* opt0_array;
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| 50 | List<List<bool>*>* opt_stacks;
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| 51 |
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| 52 | static constexpr uint32_t field_mask() {
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| 53 | return
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| 54 | maskbit(offsetof(_View, opt0_array))
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| 55 | | maskbit(offsetof(_View, opt_stacks));
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| 56 | }
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| 57 | };
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| 58 |
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| 59 | class Parse : public _View {
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| 60 | public:
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| 61 | Parse(List<bool>* opt0_array, List<List<bool>*>* opt_stacks)
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| 62 | : _View(opt0_array, opt_stacks) {
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| 63 | }
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| 64 | """)
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| 65 |
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| 66 | GenMethods(option_def.ParseOptNames(), f)
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| 67 |
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| 68 | f.write("""\
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| 69 | };
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| 70 |
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| 71 | class Exec : public _View {
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| 72 | public:
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| 73 | Exec(List<bool>* opt0_array, List<List<bool>*>* opt_stacks)
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| 74 | : _View(opt0_array, opt_stacks) {
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| 75 | }
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| 76 | """)
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| 77 |
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| 78 | GenMethods(option_def.ExecOptNames(), f)
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| 79 |
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| 80 | f.write("""\
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| 81 | };
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| 82 |
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| 83 | } // namespace optview
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| 84 |
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| 85 | #endif // OPTVIEW_H
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| 86 | """)
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| 87 |
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| 88 |
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| 89 | if __name__ == '__main__':
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| 90 | try:
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| 91 | main(sys.argv)
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| 92 | except RuntimeError as e:
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| 93 | print('FATAL: %s' % e, file=sys.stderr)
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| 94 | sys.exit(1)
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