copilot-swe-agent[bot]
150f1fe2ea
Revert is_concat changes, add ZIPT URL, implement snode/sgraph operations and tests
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- Revert is_str_concat/is_re_concat to original form (PR #8820 review)
- Add ZIPT URL (https://github.com/CEisenhofer/ZIPT ) to euf_sgraph.h
- Add snode::at() for token indexing and collect_tokens() for enumeration
- Add sgraph factory methods: mk_var, mk_char, mk_empty, mk_concat
- Add sgraph drop operations: drop_first, drop_last, drop_left, drop_right
- Add sgraph substitution: subst(snode*, snode*, snode*)
- Add Brzozowski derivative via seq_rewriter::mk_derivative
- Add minterm computation from regex predicates
- Add 7 new unit tests covering all new operations with complex concats
Co-authored-by: NikolajBjorner <56730610+NikolajBjorner@users.noreply.github.com>
2026-03-02 19:28:32 +00:00
copilot-swe-agent[bot]
40b99311e3
Fix enode_concat_eq leaf comparison, simplify is_str/re_concat, update sgraph summary
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Address remaining review feedback from PR #8820 :
- Use pointer comparison instead of ID comparison in enode_concat_eq
- Remove redundant num_args() == 2 check from is_str_concat/is_re_concat
- Update euf_sgraph.h abstract to detail seq_plugin features
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-02 18:58:21 +00:00
copilot-swe-agent[bot]
a3baae5942
Changes before error encountered
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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-02 17:01:49 +00:00
copilot-swe-agent[bot]
037d2da801
Distinguish is_re_concat/is_str_concat and mk_re_concat/mk_str_concat in euf_seq_plugin
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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-02 16:34:29 +00:00
copilot-swe-agent[bot]
82051ac4d8
Reuse seq_rewriter::is_nullable, add assoc hash table to seq_plugin propagate_assoc
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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-02 00:36:52 +00:00
copilot-swe-agent[bot]
6ef3be4e5e
Remove sgraph dependency from seq_plugin, let sgraph register nodes via on_make callback
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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-01 23:50:48 +00:00
copilot-swe-agent[bot]
5c14edf030
Change ownership: sgraph owns egraph with seq_plugin, add assoc hash table, add unit tests
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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-01 23:23:12 +00:00
copilot-swe-agent[bot]
78a4e3001b
Add euf_seq_plugin: string plugin for egraph with concat associativity and ZIPT simplifications
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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
2026-03-01 21:50:06 +00:00
