Files
aego/script/verify/doc.go
T
sanspie cf68c71f05 Stage 6: coroutines, signals, ScriptRef, workspace CLI, editor tooling
Language: yield/signal/coroutine become keywords, start is contextual.
Coroutine methods (func Name() coroutine) with start and
yield / wait / frames / fixed / await; signals with Emit/Connect and
Connection handles; ScriptRef<T> and node.GetScript<T>() for fields,
plain methods and signals of other scripts. Diagnostics AES2050-AES2059.

Bytecode v3: ScriptRefs, XFields, XMethods and Connects tables resolved by
name in vm.Link, per-script signals, coroutine flag on functions; new
opcodes START/YIELD/EMIT/CONNECT/DISCONNECT/CONNECTED/COSTOP/CORUN/
SELFREF/GETSCRIPT/GETXF/SETXF/CALLR, checked by verify.

Runtime: script/coroutine scheduler (frames/fixed counters, time heap,
await lists; only due coroutines are visited) and script/signal registry
(snapshot per Emit, deferred removal, no allocations in steady state).
Hot reload cancels coroutines of changed scripts, rebinds connections by
name and signature, then runs Reloaded.

Tooling: script/build removed, aego check/test/dump run on the workspace
(test builds include _test.aes); langsvc completion, hover, signatures and
semantic tokens for the new syntax; editor highlighting, snippets with
placeholders, coroutine/signal profiler graphs and stats.

Docs (script.md sections 16-19, editor.md, ARCHITECTURE), test fixtures and
golden files, platformer enemies wired to the player, scriptreload demo,
and run.Config.FrameTime for deterministic headless fixed steps.

Modules (6.5): engine/module registry and ComponentBuilder are the one
registration path for engine subsystems and native code; render2d,
render3d and script/engine are modules over scene/frame, the script
component moved to scene/scriptcomp, and scene/components and
scene/systems are gone. Editor inspector, templates, picking shapes and
extension hooks are driven by descriptors and editor/builtins; sdk gains
Component/EditorHook; depcheck checks the module graph and the
aego_runtime graph.

Also: stop tracking built tool binaries; gl33 activates the scratch unit
before binding for texture updates.

Verification: typed component method adapters (Method0..2, Proc0..2)
with direct field access and no allocations; app.Build as the single
construction path for run and the editor; modules attach per scene
document; depcheck aego_editor pass; diagnostic codes in one place and
every code covered by a test; indexed coroutine heaps with eager
cancel; dead component references and nil intrinsics fault with
AES6004, host faults keep their code; GC roots of struct fields checked
in verify and vm.Link; 255-field limit; AES4010 for script packages
shadowing host modules; architecture registry D111-D147.

Golden: the harness renders on the thread that owns the GL context,
ReadPixels returns rows in memory order (render targets are top-down per
D17), and the first rendering references are committed.
2026-10-12 14:22:08 +03:00

30 lines
1.7 KiB
Go

// Package verify statically validates a compiled bytecode.Module before it is
// allowed to run (requirement D99): it checks operand ranges against OpInfo,
// call windows against each function's register count, jumps within their
// function, that every function ends on a terminal instruction, that the line
// table is monotonic, script field layout and GC-root (HeapSlots) consistency,
// name uniqueness, and the encoding-derived limits. It never indexes a module
// slice without a bounds check, so it is safe on fuzzed input.
//
// # Checks it deliberately leaves to the VM at run time
//
// Some invariants depend on values that are only known while executing, so the
// verifier cannot prove them from the artifact alone. The VM must enforce each:
//
// - INDEX / SETINDEX / APPEND: the element width lives in the heap object's
// header, not the instruction, so the VM checks the index against the
// slice's length and that the value window a..a+width stays within
// Registers.
// - GETCF / SETCF: the field index is validated against the component table
// of the component reference held in register b, which is a runtime value.
// - CALLX: the extern's declared Params/Results are matched against the real
// target function at link time, when the other package's module is present.
// - CALLR / GETXF / SETXF / CONNECT: the target script lives in another
// module, so the method kind (not lifecycle, not coroutine), the field
// layout and the signal/handler pairing are resolved by name in vm.Link and
// rejected there.
//
// Each is a single comparison, listed here so it stays visible that the static
// verifier has not already covered them.
package verify