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Add C++ ECMAScript regular-expression parser and tree view #22220

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Add C++ ECMAScript regular-expression parser and tree view #22220

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Initial plan
Copilot Jul 21, 2026
90a14d8
Commit 1: Copy Ruby regex library files verbatim (non-compiling check…
Copilot Jul 21, 2026
52b35ef
Commit 2: Adapt Ruby regex library to compile against C++
Copilot Jul 21, 2026
d7a8f48
Commit 3: Add test.cpp corpus wrapped in std::regex stubs; generate .…
Copilot Jul 21, 2026
96c7e2d
Commit 4: Curate corpus for C++ ECMAScript; regenerate .expected
Copilot Jul 21, 2026
67ff589
Commit 5: Remove Ruby-only parser features; shift to ECMAScript dialect
Copilot Jul 21, 2026
9fd7e94
Commit 6: Add POSIX-bracket extension tests (pre-fix, capturing incor…
Copilot Jul 21, 2026
cebddbd
Commit 7: Implement POSIX collating symbol and equivalence class support
Copilot Jul 21, 2026
e7ccb1f
Commit 8: Add location tests exposing term-location off-by-one (pre-fix)
Copilot Jul 21, 2026
bfa6530
Commit 9: Fix hasLocationInfo for all string literal forms; fix unico…
Copilot Jul 21, 2026
448ae6a
Commit 1: Remove \p{...}/\P{...} named-character-property handling
Copilot Jul 21, 2026
76e3118
Commit 2: Fix \0 escape parsing
Copilot Jul 21, 2026
903e9f2
Commit 3: Remove \U unicode-escape residue; keep only ECMAScript \uHHHH
Copilot Jul 21, 2026
8aa1a7b
Commit 4: Correct anchor semantics/docs for default std::regex
Copilot Jul 21, 2026
8d53e36
Commit 5: Port missing POSIX-bracket parse cases from PR #22200
Copilot Jul 21, 2026
bfb7b1d
Commit 6: Fix POSIX-bracket mis-parses revealed by Commit 5
Copilot Jul 21, 2026
633ba01
Commit 7: Add Consistency.ql regression guard
Copilot Jul 21, 2026
2f01e13
Commit 8: Complete location-test coverage for u8 and u8R forms
Copilot Jul 21, 2026
e4305fb
Commit 9: Remove leftover Ruby scratch corpus regexp.rb
Copilot Jul 21, 2026
34bb7ac
Commit 10: Strip process-narrative comments from shipped source
Copilot Jul 21, 2026
f28d7f5
Remove named capture group support from C++ ECMAScript regex parser
Copilot Jul 21, 2026
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4 changes: 4 additions & 0 deletions cpp/ql/lib/change-notes/2026-07-21-cpp-regex-tree-view.md
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@@ -0,0 +1,4 @@
---
category: minorAnalysis
---
* Added an internal C++ regular-expression parse library and tree view targeting the ECMAScript grammar (the default for `std::regex`). No queries are added in this change.
1 change: 1 addition & 0 deletions cpp/ql/lib/qlpack.yml
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Expand Up @@ -10,6 +10,7 @@ dependencies:
codeql/mad: ${workspace}
codeql/quantum: ${workspace}
codeql/rangeanalysis: ${workspace}
codeql/regex: ${workspace}
codeql/ssa: ${workspace}
codeql/typeflow: ${workspace}
codeql/tutorial: ${workspace}
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