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add emitMiniLocations flag to transpiler

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This commit is contained in:
Felix Roos 2023-07-02 13:42:41 +02:00
parent d686b65dbe
commit 5f271ed127
3 changed files with 31 additions and 9 deletions
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1
packages/transpiler/package.json
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@ -31,6 +31,7 @@
"homepage": "https://github.com/tidalcycles/strudel#readme",
"dependencies": {
"@strudel.cycles/core": "workspace:*",
"@strudel.cycles/mini": "workspace:*",
"acorn": "^8.8.1",
"escodegen": "^2.0.0",
"estree-walker": "^3.0.1"

8
packages/transpiler/test/transpiler.test.mjs
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@ -36,4 +36,12 @@ describe('transpiler', () => {
}),
).toEqual("const {default: foo} = await import('https://bar.com/foo.js');");
}); */
it('collections locations', () => {
const { miniLocations } = transpiler(`s("bd", "hh oh")`, { ...simple, emitMiniLocations: true });
expect(miniLocations).toEqual([
[3, 5],
[9, 11],
[12, 14],
]);
});
});

31
packages/transpiler/transpiler.mjs
View File

@ -2,9 +2,10 @@ import escodegen from 'escodegen';
import { parse } from 'acorn';
import { walk } from 'estree-walker';
import { isNoteWithOctave } from '@strudel.cycles/core';
import { getLeafLocations } from '@strudel.cycles/mini';
export function transpiler(input, options = {}) {
const { wrapAsync = false, addReturn = true, simpleLocs = false } = options;
const { wrapAsync = false, addReturn = true, simpleLocs = false, emitMiniLocations = false } = options;
let ast = parse(input, {
ecmaVersion: 2022,
@ -12,18 +13,27 @@ export function transpiler(input, options = {}) {
locations: true,
});
let miniLocations = [];
const collectMiniLocations = (value, node) => {
const leafLocs = getLeafLocations(`"${value}"`);
const withOffset = leafLocs.map((offsets) => offsets.map((o) => o + node.start));
miniLocations = miniLocations.concat(withOffset);
};
walk(ast, {
enter(node, parent, prop, index) {
enter(node, parent /* , prop, index */) {
if (isBackTickString(node, parent)) {
const { quasis, start, end } = node;
const { quasis } = node;
const { raw } = quasis[0].value;
this.skip();
return this.replace(miniWithLocation(raw, node, simpleLocs));
emitMiniLocations && collectMiniLocations(raw, node);
return this.replace(miniWithLocation(raw, node, simpleLocs, miniLocations));
}
if (isStringWithDoubleQuotes(node)) {
const { value, start, end } = node;
const { value } = node;
this.skip();
return this.replace(miniWithLocation(value, node, simpleLocs));
emitMiniLocations && collectMiniLocations(value, node);
return this.replace(miniWithLocation(value, node, simpleLocs, miniLocations));
}
// TODO: remove pseudo note variables?
if (node.type === 'Identifier' && isNoteWithOctave(node.name)) {
@ -47,11 +57,14 @@ export function transpiler(input, options = {}) {
argument: expression,
};
}
const output = escodegen.generate(ast);
let output = escodegen.generate(ast);
if (wrapAsync) {
return `(async ()=>{${output}})()`;
output = `(async ()=>{${output}})()`;
}
return output;
if (!emitMiniLocations) {
return output;
}
return { output, miniLocations };
}
function isStringWithDoubleQuotes(node, locations, code) {