110 lines
3.5 KiB
JavaScript
110 lines
3.5 KiB
JavaScript
|
/*
|
||
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
||
|
Author Tobias Koppers @sokra
|
||
|
*/
|
||
|
|
||
|
"use strict";
|
||
|
|
||
|
const { ConcatSource, PrefixSource } = require("webpack-sources");
|
||
|
const InitFragment = require("./InitFragment");
|
||
|
const Template = require("./Template");
|
||
|
const { mergeRuntime } = require("./util/runtime");
|
||
|
|
||
|
/** @typedef {import("webpack-sources").Source} Source */
|
||
|
/** @typedef {import("./Generator").GenerateContext} GenerateContext */
|
||
|
/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
|
||
|
|
||
|
const wrapInCondition = (condition, source) => {
|
||
|
if (typeof source === "string") {
|
||
|
return Template.asString([
|
||
|
`if (${condition}) {`,
|
||
|
Template.indent(source),
|
||
|
"}",
|
||
|
""
|
||
|
]);
|
||
|
} else {
|
||
|
return new ConcatSource(
|
||
|
`if (${condition}) {\n`,
|
||
|
new PrefixSource("\t", source),
|
||
|
"}\n"
|
||
|
);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
class ConditionalInitFragment extends InitFragment {
|
||
|
/**
|
||
|
* @param {string|Source} content the source code that will be included as initialization code
|
||
|
* @param {number} stage category of initialization code (contribute to order)
|
||
|
* @param {number} position position in the category (contribute to order)
|
||
|
* @param {string} key unique key to avoid emitting the same initialization code twice
|
||
|
* @param {RuntimeSpec | boolean} runtimeCondition in which runtime this fragment should be executed
|
||
|
* @param {string|Source=} endContent the source code that will be included at the end of the module
|
||
|
*/
|
||
|
constructor(
|
||
|
content,
|
||
|
stage,
|
||
|
position,
|
||
|
key,
|
||
|
runtimeCondition = true,
|
||
|
endContent
|
||
|
) {
|
||
|
super(content, stage, position, key, endContent);
|
||
|
this.runtimeCondition = runtimeCondition;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @param {GenerateContext} generateContext context for generate
|
||
|
* @returns {string|Source} the source code that will be included as initialization code
|
||
|
*/
|
||
|
getContent(generateContext) {
|
||
|
if (this.runtimeCondition === false || !this.content) return "";
|
||
|
if (this.runtimeCondition === true) return this.content;
|
||
|
const expr = generateContext.runtimeTemplate.runtimeConditionExpression({
|
||
|
chunkGraph: generateContext.chunkGraph,
|
||
|
runtimeRequirements: generateContext.runtimeRequirements,
|
||
|
runtime: generateContext.runtime,
|
||
|
runtimeCondition: this.runtimeCondition
|
||
|
});
|
||
|
if (expr === "true") return this.content;
|
||
|
return wrapInCondition(expr, this.content);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @param {GenerateContext} generateContext context for generate
|
||
|
* @returns {string|Source=} the source code that will be included at the end of the module
|
||
|
*/
|
||
|
getEndContent(generateContext) {
|
||
|
if (this.runtimeCondition === false || !this.endContent) return "";
|
||
|
if (this.runtimeCondition === true) return this.endContent;
|
||
|
const expr = generateContext.runtimeTemplate.runtimeConditionExpression({
|
||
|
chunkGraph: generateContext.chunkGraph,
|
||
|
runtimeRequirements: generateContext.runtimeRequirements,
|
||
|
runtime: generateContext.runtime,
|
||
|
runtimeCondition: this.runtimeCondition
|
||
|
});
|
||
|
if (expr === "true") return this.endContent;
|
||
|
return wrapInCondition(expr, this.endContent);
|
||
|
}
|
||
|
|
||
|
merge(other) {
|
||
|
if (this.runtimeCondition === true) return this;
|
||
|
if (other.runtimeCondition === true) return other;
|
||
|
if (this.runtimeCondition === false) return other;
|
||
|
if (other.runtimeCondition === false) return this;
|
||
|
const runtimeCondition = mergeRuntime(
|
||
|
this.runtimeCondition,
|
||
|
other.runtimeCondition
|
||
|
);
|
||
|
return new ConditionalInitFragment(
|
||
|
this.content,
|
||
|
this.stage,
|
||
|
this.position,
|
||
|
this.key,
|
||
|
runtimeCondition,
|
||
|
this.endContent
|
||
|
);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
module.exports = ConditionalInitFragment;
|