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CodeGenerationResults.js
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Mon, Oct 14, 10:27

CodeGenerationResults.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { runtimeToString, RuntimeSpecMap } = require("./util/runtime");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("./Module")} Module */
/** @typedef {import("./Module").CodeGenerationResult} CodeGenerationResult */
/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
class CodeGenerationResults {
constructor() {
/** @type {Map<Module, RuntimeSpecMap<CodeGenerationResult>>} */
this.map = new Map();
}
/**
* @param {Module} module the module
* @param {RuntimeSpec} runtime runtime(s)
* @returns {CodeGenerationResult} the CodeGenerationResult
*/
get(module, runtime) {
const entry = this.map.get(module);
if (entry === undefined) {
throw new Error(
`No code generation entry for ${module.identifier()} (existing entries: ${Array.from(
this.map.keys(),
m => m.identifier()
).join(", ")})`
);
}
if (runtime === undefined) {
const results = new Set(entry.values());
if (results.size !== 1) {
throw new Error(
`No unique code generation entry for unspecified runtime for ${module.identifier()} (existing runtimes: ${Array.from(
entry.keys(),
r => runtimeToString(r)
).join(", ")}).
Caller might not support runtime-dependent code generation (opt-out via optimization.usedExports: "global").`
);
}
return results.values().next().value;
} else {
const result = entry.get(runtime);
if (result === undefined) {
throw new Error(
`No code generation entry for runtime ${runtimeToString(
runtime
)} for ${module.identifier()} (existing runtimes: ${Array.from(
entry.keys(),
r => runtimeToString(r)
).join(", ")})`
);
}
return result;
}
}
/**
* @param {Module} module the module
* @param {RuntimeSpec} runtime runtime(s)
* @param {string} sourceType the source type
* @returns {Source} a source
*/
getSource(module, runtime, sourceType) {
return this.get(module, runtime).sources.get(sourceType);
}
/**
* @param {Module} module the module
* @param {RuntimeSpec} runtime runtime(s)
* @returns {ReadonlySet<string>} runtime requirements
*/
getRuntimeRequirements(module, runtime) {
return this.get(module, runtime).runtimeRequirements;
}
/**
* @param {Module} module the module
* @param {RuntimeSpec} runtime runtime(s)
* @param {string} key data key
* @returns {any} data generated by code generation
*/
getData(module, runtime, key) {
const data = this.get(module, runtime).data;
return data === undefined ? undefined : data.get(key);
}
/**
* @param {Module} module the module
* @param {RuntimeSpec} runtime runtime(s)
* @param {CodeGenerationResult} result result from module
* @returns {void}
*/
add(module, runtime, result) {
const map = this.map.get(module);
if (map !== undefined) {
map.set(runtime, result);
} else {
const newMap = new RuntimeSpecMap();
newMap.set(runtime, result);
this.map.set(module, newMap);
}
}
}
module.exports = CodeGenerationResults;

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