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Reworking of JS internals to support binding of nested C structs (like sqlite3_index_constraint and friends) and allow some of the automated JS/C conversions to be plugged in at the struct-binding level, simplifying how struct members, in particular function pointers, can be used from JS.

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FossilOrigin-Name: bb4fd5b789cebf2b224c29023fea3e620a86fb36730c36c0d85d9f35880bf643
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stephan
2025-11-10 07:41:54 +00:00
parent 998ebf1de7
commit 73caea1764
8 changed files with 415 additions and 136 deletions
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39
ext/wasm/api/sqlite3-api-prologue.js
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@@ -799,22 +799,6 @@ globalThis.sqlite3ApiBootstrap = async function sqlite3ApiBootstrap(
environment via whwashutil.js.
*/
Object.assign(wasm, {
/**
The WASM IR (Intermediate Representation) value for
pointer-type values. If set then it MUST be one of 'i32' or
'i64' (else an exception will be thrown). If it's not set, it
will default to 'i32'.
*/
pointerIR: config.wasmPtrIR,
/**
True if BigInt support was enabled via (e.g.) the
Emscripten -sWASM_BIGINT flag, else false. When
enabled, certain 64-bit sqlite3 APIs are enabled which
are not otherwise enabled due to JS/WASM int64
impedance mismatches.
*/
bigIntEnabled: !!config.bigIntEnabled,
/**
The symbols exported by the WASM environment.
@@ -834,6 +818,29 @@ globalThis.sqlite3ApiBootstrap = async function sqlite3ApiBootstrap(
"in either config.exports.memory (exported)",
"or config.memory (imported)."),
/**
The WASM pointer size. If set then it MUST be one of 4 or 8 and
it MUST correspond to the WASM environment's pointer size. We
figure out the size by calling some un-JS-wrapped WASM function
which returns a pointer-type value. If that value is a BigInt,
it's 64-bit, else it's 32-bit. The pieces which populate
sqlite3.wasm (whwasmutil.js) can figure this out _if_ they can
allocate, but we have a chicken/egg situation there which makes
it illegal for that code to invoke wasm.dealloc() at the time
it would be needed. So we need to configure it ahead of time
(here) instead.
*/
pointerSize: ('number'===typeof config.exports.sqlite3_libversion()) ? 4 : 8,
/**
True if BigInt support was enabled via (e.g.) the
Emscripten -sWASM_BIGINT flag, else false. When
enabled, certain 64-bit sqlite3 APIs are enabled which
are not otherwise enabled due to JS/WASM int64
impedance mismatches.
*/
bigIntEnabled: !!config.bigIntEnabled,
/**
WebAssembly.Table object holding the indirect function call
table. Defaults to exports.__indirect_function_table.