#import "modules/std.sx";
#import "modules/build.sx";
#import "modules/compiler.sx";

// P5.4 — the build-pipeline query primitives on the comptime VM. A custom
// `on_build` override inspects the build metadata (`c_object_paths` returns the
// VM-built `List(string)` of C companion objects), then DELEGATES to the stdlib
// `default_pipeline` for the real emit + link. The `#import c` source compiles to
// one object, so `c_object_paths()` must be a one-element list of a non-empty
// path. AOT runs the produced binary → "runtime main: 42".

#import c {
    #source "1662-platform-build-pipeline-queries.c";
};

c_marker :: () -> i64 extern;

build :: (opt: BuildOptions) -> bool abi(.compiler) {
    objs := c_object_paths();
    if objs.len != 1 { return false; }
    if objs.items[0].len == 0 { return false; }
    // link_libraries must be a well-formed (possibly empty) list — touch each.
    libs := link_libraries();
    sum : i64 = 0;
    i : i64 = 0;
    while i < libs.len { sum += libs.items[i].len; i += 1; }
    if sum < 0 { return false; }
    return default_pipeline(opt);   // the real emit + link
}
#run on_build(build);

main :: () { print("runtime main: {}\n", c_marker()); }