Implement the full count loop compiler, replacing the stubs in count.rs,
count_any.rs, and count_bindings.rs with a single consolidated module.
Handles both field-based and value-based count nodes. Field counts walk
the resource via resolve_alias_path then iterate the wildcard array;
value counts operate on an arbitrary collection expression.
For nested wildcard paths like A[*].B[*].C, the compiler emits recursive
ForEach loops, drilling one wildcard level at a time. When an outer
count binding already covers a prefix, the inner loop starts from the
bound element register instead of re-walking from the resource root.
Existence patterns (count > 0, count == 0) are recognized and lowered
to LoopMode::Any, which exits on the first match rather than counting
every element.
Count-binding resolution threads the current-element register through
inner field references and current() calls so that nested conditions
can address fields relative to the loop variable.
Also fixes the bound_len arithmetic in conditions_wildcard.rs with a
cleaner strip_prefix call, and removes the nested-wildcard bail in
split_count_wildcard_path since the compiler now handles them.
Fill in the compiler stubs for the evaluation layer.
Condition and wildcard compilation:
- Compile allOf/anyOf/not constraints, operator conditions with
value-condition guards, and implicit allOf for unbound [*] fields
via recursive Every loops.
- Defensively lowercase prefix/suffix path segments in wildcard
handling for consistency with the collect path.
Expression and field compilation:
- Parse ARM template expressions and dispatch calls to parameters,
field, current, resourceGroup, subscription, and others.
- Compile all FieldKind variants (type, id, name, location, tags,
aliases, dynamic if/concat), resolve resource paths, and collect
wildcard values via ForEach loops.
Template function dispatch:
- Wire up 50+ ARM template functions covering string, numeric,
encoding, collection, date/time, logical, and comparison categories.
Compiler infrastructure (core.rs):
- Add emit helpers: load_literal, emit_builtin_call,
emit_chained_index_literal_path, load_input, load_context,
emit_coalesce_undefined_to_null, add_literal_u16, and
get_or_add_builtin_index.
- Add alias resolution via resolve_alias_path and strip_fq_prefix.
Misc cleanup:
- Handle ARM template `[[` escape sequences in json_value_to_runtime
and add a test for it.
- Tighten module visibility (pub -> pub(crate)/pub(super)) where
appropriate.
- Add span context to bail errors in stubs so diagnostics carry
source locations.
- Take CountBinding by reference in compile_from_binding.
- Suppress clippy warnings on the no-op memory_check stub.
Anand Krishnamoorthi