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Experimentally use clang's C preprocessor to filter #ifdef's out of the generated sqlite3-api.js, the goal being to see if we can feasibly use cpp to include ES6 module-specific code in the main code base and conditionally filter it out.

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FossilOrigin-Name: 718a6d371e61359d73c8f80afdb248e3d9b4d8df4c4e5c122ac884344e31035b
This commit is contained in:
stephan
2022-11-03 22:14:47 +00:00
parent 4df2ab575f
commit b0ab21dee4
5 changed files with 76 additions and 16 deletions
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7
ext/wasm/api/pre-js.js
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@ -29,6 +29,10 @@ sqlite3InitModuleState.debugModule('self.location =',self.location);
4) If none of the above apply, (prefix+path) is returned.
*/
Module['locateFile'] = function(path, prefix) {
#ifdef SQLITE_JS_ESM
return new URL(path, import.meta.url).href;
#else
'use strict';
let theFile;
const up = this.urlParams;
if(up.has(path)){
@ -47,6 +51,7 @@ Module['locateFile'] = function(path, prefix) {
"result =", theFile
);
return theFile;
#endif /* SQLITE_JS_EMS */
}.bind(sqlite3InitModuleState);
/**
@ -65,7 +70,7 @@ Module[xNameOfInstantiateWasm] = function callee(imports,onSuccess){
const uri = Module.locateFile(
callee.uri, (
('undefined'===typeof scriptDirectory/*var defined by Emscripten glue*/)
? '' : scriptDirectory)
? "" : scriptDirectory)
);
sqlite3InitModuleState.debugModule(
"instantiateWasm() uri =", uri