36 lines
943 B
C++
36 lines
943 B
C++
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// Phase 0 WASM hello-world.
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//
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// Scope (Rule R5: WASM never blocks shipping):
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// Prove the Emscripten toolchain compiles a C++ function callable from JS.
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// Nothing more. The real engine-in-WASM build happens in Phase 2 and depends
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// on PDFium/Skia/FreeType/HarfBuzz cross-compiled with Emscripten plus the
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// frozen interface contracts from Gate G0b — all of which are out of scope
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// for Phase 0.
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//
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// The exported C symbols here are loaded from JS via cwrap()/ccall(); see
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// hello.test.mjs.
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#include <cstdint>
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#include <cstring>
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#if defined(__EMSCRIPTEN__)
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#include <emscripten/emscripten.h>
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#define WASM_EXPORT EMSCRIPTEN_KEEPALIVE
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#else
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#define WASM_EXPORT
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#endif
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extern "C" {
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// Smallest possible "does it run?" probe.
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WASM_EXPORT int add(int a, int b) {
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return a + b;
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}
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// A version probe so the JS side can sanity-check the module it loaded.
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WASM_EXPORT int hello_version() {
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return 1;
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}
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} // extern "C"
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