Function rust_map_source_range

internal/cbm/lsp/rust_lsp.c:4021–4043

Inject a synthetic CBMCall into result->calls so the downstream pipeline * (cbm_pipeline_find_lsp_resolution) can pair it with the resolved_call and * emit a CALLS edge. `callee_qn`'s last dot segment is used as the textual * callee_name, matching how the resolver's short-name comparison works. Only * used for calls the syntactic extractor cannot see (operator desugaring, * macro-hidden metho

 * used for calls the syntactic extractor cannot see (operator desugaring,
 * macro-hidden method calls). */
static bool rust_map_source_range(const RustLSPContext *ctx, uint32_t start, uint32_t end,
                                  uint32_t *mapped_start, uint32_t *mapped_end) {
    if (!ctx || !mapped_start || !mapped_end || end <= start)
        return false;
    if (ctx->site_map_active) {
        if (start < ctx->site_map_synthetic_start_byte || end > ctx->site_map_synthetic_end_byte) {
            return false;
        }
        *mapped_start =
            ctx->site_map_original_start_byte + (start - ctx->site_map_synthetic_start_byte);
        *mapped_end =
            ctx->site_map_original_start_byte + (end - ctx->site_map_synthetic_start_byte);
        return *mapped_end > *mapped_start;
    }
    /* Only the immutable root buffer has identity coordinates. A
     * macro_rules! transcriber is reparsed from substituted generated text and
     * cannot be mapped by a single offset. */
    if (ctx->source != ctx->root_source)
        return false;
    *mapped_start = start;
    *mapped_end = end;
    return true;
}

static void rust_inject_syn_call(RustLSPContext *ctx, const char *callee_qn) {
    if (!ctx || !ctx->syn_calls || !callee_qn || !ctx->enclosing_func_qn)