json-joy
Version:
Collection of libraries for building collaborative editing apps.
70 lines (69 loc) • 2.34 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.$apply = exports.$$apply = exports.apply = void 0;
const clone_1 = require("@jsonjoy.com/util/lib/json-clone/clone");
const json_1 = require("../codec/json");
const op_1 = require("../op");
const codegen_1 = require("@jsonjoy.com/util/lib/codegen");
const codegenOp_1 = require("./codegenOp");
const apply = (patch, applyOptions, doc) => {
const { mutate, createMatcher } = applyOptions;
if (!mutate)
doc = (0, clone_1.clone)(doc);
const length = patch.length;
const opts = { createMatcher };
for (let i = 0; i < length; i++) {
const op = (0, json_1.operationToOp)(patch[i], opts);
const opResult = op.apply(doc);
doc = opResult.doc;
}
return doc;
};
exports.apply = apply;
const $$apply = (operations, applyOptions) => {
const { mutate, createMatcher } = applyOptions;
const operationOptions = { createMatcher };
const fns = [];
const length = operations.length;
let hasNonPredicateOperations = false;
for (let i = 0; i < length; i++) {
const op = (0, json_1.operationToOp)(operations[i], operationOptions);
const isPredicateOp = op instanceof op_1.AbstractPredicateOp;
if (!isPredicateOp)
hasNonPredicateOperations = true;
fns.push((0, codegenOp_1.codegenOp)(op));
}
const needsToClone = !mutate && hasNonPredicateOperations;
const deps = [];
const depNames = [];
if (needsToClone) {
deps.push(clone_1.clone);
depNames.push('clone');
}
let resultExpression = 'doc';
for (let i = 0; i < fns.length; i++) {
const fn = fns[i];
const depName = `fn${i}`;
deps.push(fn);
depNames.push(depName);
resultExpression = `${depName}(${resultExpression})`;
}
const js = /* js */ `
(function(${depNames.join(',')}) {
return function(doc){
${needsToClone ? /* js */ 'doc = clone(doc);' : ''}
return ${resultExpression};
};
})`;
return {
deps,
js: js,
};
};
exports.$$apply = $$apply;
const $apply = (operations, applyOptions) => {
const fn = (0, exports.$$apply)(operations, applyOptions);
const compiled = (0, codegen_1.compile)(fn.js)(...fn.deps);
return compiled;
};
exports.$apply = $apply;