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* feat: add Azure Policy builtins with YAML test suite Implement ARM template functions for Azure Policy evaluation: Builtins: - String: indexOf, lastIndexOf, trim, format, split, startsWith, endsWith, padLeft, concat, replace, toLower, toUpper, substring, guid, uniqueString - DateTime: dateTimeAdd, dateTimeFromEpoch, dateTimeToEpoch, addDays - Collection: intersection, union, take, skip, first, last, min, max, range, items, tryGet, tryIndexFromEnd, empty, array, createObject - Encoding: base64, base64ToString, base64ToJson, uri, uriComponent, uriComponentToString, dataUri, dataUriToString - Numeric: int, float, intDiv, intMod - Misc: json, join, bool, string, coalesce, if, getParameter, resolveField - Logic: logicAll, logicAny Key implementation details: - Unicode case-insensitive search via ICU4X case folding with single-pass fold_with_char_map() for indexOf/lastIndexOf - .NET composite formatting (System.String.Format) with alignment, standard and custom datetime format specifiers, numeric format specifiers - DateTime round-trip preserves input shape (Z vs +00:00, T vs space, fractional seconds) when no explicit output format is supplied - Zero-cost as_str() helper borrows directly from Value::String(Rc<str>) - BTreeSet<&Value> in array union avoids redundant cloning Test suite: - 53 YAML test files exercising all builtins via direct BUILTINS registry - Coverage for edge cases: empty inputs, Unicode, fractional seconds, invalid alignment, unknown format specifiers, RFC3339 offset shapes Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com> * fix: address PR review comments - Fix percent_encode to only uppercase hex digits, not entire string - Remove guid/uniqueString (unsupported); delete custom SHA-1 impl - Replace unwrap_or(0) with proper error in format placeholder parsing - Hoist CaseMapper into static CaseMapperBorrowed for zero per-call overhead - Pre-allocate Vec in range() with_capacity - Update bindings/ffi and bindings/ruby Cargo.lock - Fix uri_component test expectations for correct case preservation Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com> * fix: address second round of PR review comments - float(): return Undefined when as_f64() fails instead of leaking the original non-f64 representation - createObject(): reject odd number of arguments with an error (ARM-template parity) - format(): error on unknown numeric format specifiers instead of silently passing through (matches .NET FormatException behavior) - format(): cap alignment width at 10,000 to prevent DoS from user-controlled format strings like {0,1000000000} - Add YAML test cases for all new error behaviors Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com> * fix: address third round of PR review comments - percent_decode: reject incomplete % escapes (e.g. "%", "%2") instead of treating them as literal characters - parse_iso8601_duration: reject leftover digits without a unit designator at T boundary and end-of-input (e.g. "P1", "P1T2H") - yaml_to_value: panic on unsupported YAML numeric representations instead of silently mapping to Null - Revert unused src/languages/mod.rs changes (module is defined inline in lib.rs) Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com> * fix: add missing edge-case tests and fix empty-delimiter panic - fn_split: return input as single-element array for empty string delimiter instead of panicking (Rust's str::split("") panics) - format: add test for F3 higher precision ({0:F3} + 1.23456 → 1.235) - format: add test for N2 float with thousands separator - format: add test for negative index error ({-1}) - split: add test for empty-string delimiter - uri: add tests for query string and fragment in relative URI - createObject: add test for non-string (numeric) keys Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com> * fix: address fourth round of PR review comments - Add MAX_VARIADIC_ARGS (64) constant for variadic builtin arity instead of registering with 0 (logic_all, logic_any, min, max, format, intersection, union, coalesce, createObject); set dateTimeAdd to exact arity 3 - Switch indexOf/lastIndexOf to UTF-16 code-unit indices to match .NET String.IndexOf semantics (track ch.len_utf16() in fold_with_char_map, use encode_utf16().count() for empty-needle lastIndexOf) - Use DateTime::<Utc>::from_timestamp for explicit timezone type - Remove stale docs/azure-policy/casing.md link from module doc - Fix misleading comment in want_error test branch (code bails on Undefined, not accepts it) Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com> --------- Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>