giles
9ed58bd0fc
Some checks failed
Test, Build, and Deploy / test-build-deploy (push) Failing after 23s
Phase 4 cont. Adds map values and index-assignment for both
slices and maps.
Map representation: (list :go-map ENTRIES) where ENTRIES is an
association list of (key value) pairs.
go-map-get / go-map-set — primitive lookup + functional-update.
go-slice-set — same idea for slices.
go-extract-map-entries reads each :kv element in a composite literal,
evaluating key and value. go-eval-composite dispatches on :ty-map to
build the :go-map value.
go-eval-index extended: when OBJ is a :go-map, look up the key via
go-map-get. Missing keys return nil in v0 (Go's real semantics is
the zero value of the value type — needs runtime type info that this
slice doesn't yet thread through).
go-eval-builtin's len handles :go-map alongside :go-slice and strings.
go-eval-assign-pairs gets a new branch for (:index OBJ IDX) LHS:
- var-rooted indexing only (a[i] = v / m["k"] = v)
- slice → go-slice-set then rebind the var
- map → go-map-set then rebind the var
**Word-counter via map[string]int works end-to-end:**
words := []string{"a", "b", "a", "c", "a"}
counts := map[string]int{}
for i := 0; i < len(words); i++ {
counts[words[i]] = counts[words[i]] + 1
}
// counts["a"] == 3
Builds on:
- map composite literal eval
- map index lookup
- map index-assign
- slice indexing
- len() builtin
- nil + 1 = 1 (numeric-coercion of missing-key default)
eval 58/58, total 435/435.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>