Function walk_variables_iter

internal/cbm/extract_defs.c:5253–5284

Iterative variable walker for config languages with nested structure. Used by YAML, TOML, INI, JSON.

// Iterative variable walker for config languages with nested structure.
// Used by YAML, TOML, INI, JSON.
static void walk_variables_iter(CBMExtractCtx *ctx, TSNode root, const CBMLangSpec *spec) {
    TSNodeStack stack;
    ts_nstack_init(&stack, ctx->arena, CBM_SZ_256);
    ts_nstack_push(&stack, ctx->arena, root);

    while (stack.count > 0) {
        TSNode node = ts_nstack_pop(&stack);
        uint32_t count = ts_node_child_count(node);
        for (int i = (int)count - SKIP_CHAR; i >= 0; i--) {
            TSNode child = ts_node_child(node, (uint32_t)i);
            if (ts_node_is_null(child)) {
                continue;
            }
            if (cbm_kind_in_set(child, spec->variable_node_types)) {
                /* parent of `child` is `node` (we're iterating its children) —
                 * pass it directly to avoid the O(n) ts_node_parent rescan. */
                if (cbm_is_module_level_p(node, ctx->language)) {
                    extract_var_names(ctx, child, spec);
                }
            }
            const char *ck = ts_node_type(child);
            if (strcmp(ck, "document") == 0 || strcmp(ck, "block_node") == 0 ||
                strcmp(ck, "block_mapping") == 0 || strcmp(ck, "stream") == 0 ||
                strcmp(ck, "table") == 0 || strcmp(ck, "table_array_element") == 0 ||
                strcmp(ck, "section") == 0 || strcmp(ck, "object") == 0 ||
                strcmp(ck, "array") == 0 || strcmp(ck, "pair") == 0 || strcmp(ck, "element") == 0 ||
                strcmp(ck, "content") == 0) {
                ts_nstack_push(&stack, ctx->arena, child);
            }
        }
    }
}

// True if the file's basename is values.yaml / values.yml (Helm values, #338).
static bool is_helm_values_file(const char *rel) {