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Refactor JS API amalgamation such that the bootstrapping/configuration is deferred until the whole amalgamation is available, to facilitate providing clients with a way to initialize the API with their own config (noting that we're still one small level of refactoring away from being able to actually do that).

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FossilOrigin-Name: 9dbe9a6aecec43b51057375ef1d2d632db0d17eac8b7552c20cc91fc2f1a55d1
This commit is contained in:
stephan
2022-08-22 13:34:13 +00:00
parent 64d04a8d9f
commit e3cd67603d
9 changed files with 206 additions and 107 deletions
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68
ext/wasm/api/sqlite3-api-cleanup.js
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@ -16,29 +16,45 @@
various subsystems.
*/
'use strict';
self.sqlite3.postInit.forEach(
self.importScripts/*global is a Worker*/
? function(f){
/** We try/catch/report for the sake of failures which happen in
a Worker, as those exceptions can otherwise get completely
swallowed, leading to confusing downstream errors which have
nothing to do with this failure. */
try{ f(self, self.sqlite3) }
catch(e){
console.error("Error in postInit() function:",e);
throw e;
}
}
: (f)=>f(self, self.sqlite3)
);
delete self.sqlite3.postInit;
if(self.location && +self.location.port > 1024){
console.warn("Installing sqlite3 bits as global S for dev-testing purposes.");
self.S = self.sqlite3;
}
/* Clean up temporary global-scope references to our APIs... */
self.sqlite3.config.Module.sqlite3 = self.sqlite3
/* ^^^^ Currently needed by test code and Worker API setup */;
delete self.sqlite3.capi.util /* arguable, but these are (currently) internal-use APIs */;
delete self.sqlite3 /* clean up our global-scope reference */;
//console.warn("Module.sqlite3 =",Module.sqlite3);
(function(){
/**
Replace sqlite3ApiBootstrap() with a variant which plugs in the
Emscripten-based config for all config options which the client
does not provide.
*/
const SAB = self.sqlite3ApiBootstrap;
self.sqlite3ApiBootstrap = function(apiConfig){
apiConfig = apiConfig||{};
const configDefaults = {
Module: Module /* ==> Emscripten-style Module object. Currently
needs to be exposed here for test code. NOT part
of the public API. */,
exports: Module['asm'],
memory: Module.wasmMemory /* gets set if built with -sIMPORT_MEMORY */
};
const config = {};
Object.keys(configDefaults).forEach(function(k){
config[k] = Object.prototype.hasOwnProperty.call(apiConfig, k)
? apiConfig[k] : configDefaults[k];
});
return SAB(config);
};
/**
For current (2022-08-22) purposes, automatically call sqlite3ApiBootstrap().
That decision will be revisited at some point, as we really want client code
to be able to call this to configure certain parts.
*/
const sqlite3 = self.sqlite3ApiBootstrap();
if(self.location && +self.location.port > 1024){
console.warn("Installing sqlite3 bits as global S for dev-testing purposes.");
self.S = sqlite3;
}
/* Clean up temporary references to our APIs... */
delete self.sqlite3ApiBootstrap;
Module.sqlite3 = sqlite3 /* Currently needed by test code */;
delete sqlite3.capi.util /* arguable, but these are (currently) internal-use APIs */;
//console.warn("Module.sqlite3 =",Module.sqlite3);
})();