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import { hyphenate, capitalize } from '@vue/shared';
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function createDecl(prop, value, important, raws, source) {
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const decl = {
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type: 'decl',
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prop,
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value: value.toString(),
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raws,
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source,
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};
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if (important) {
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decl.important = true;
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}
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return decl;
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}
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const isNumber = (val) => typeof val === 'number';
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const backgroundColor = 'backgroundColor';
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const backgroundImage = 'backgroundImage';
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const handleTransformBackground = (decl) => {
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const { value, important, raws, source } = decl;
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if (/^#?\S+$/.test(value) || /^rgba?(.+)$/.test(value)) {
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return [
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createDecl(backgroundImage, 'none', important, raws, source),
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createDecl(backgroundColor, value, important, raws, source),
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];
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}
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else if (/^linear-gradient(.+)$/.test(value)) {
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return [
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createDecl(backgroundImage, value, important, raws, source),
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createDecl(backgroundColor, 'transparent', important, raws, source),
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];
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}
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else if (value == '') {
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return [
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createDecl(backgroundImage, 'none', important, raws, source),
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createDecl(backgroundColor, 'transparent', important, raws, source),
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];
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}
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return [decl];
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};
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const handleTransformBackgroundNvue = (decl) => {
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const { value, important, raws, source } = decl;
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if (/^#?\S+$/.test(value) || /^rgba?(.+)$/.test(value)) {
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return [createDecl(backgroundColor, value, important, raws, source)];
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}
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else if (/^linear-gradient(.+)$/.test(value)) {
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return [createDecl(backgroundImage, value, important, raws, source)];
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}
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else if (value == '') {
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return [decl];
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}
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return [decl];
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};
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function createTransformBackground(options) {
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return (decl) => {
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// nvue 平台维持原有逻辑不变
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const isUvuePlatform = options.type === 'uvue';
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if (isUvuePlatform) {
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return handleTransformBackground(decl);
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}
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else {
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return handleTransformBackgroundNvue(decl);
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}
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};
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}
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function borderTop() {
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return 'borderTop';
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}
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function borderRight() {
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return 'borderRight';
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}
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function borderBottom() {
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return 'borderBottom';
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}
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function borderLeft() {
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return 'borderLeft';
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}
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const transformBorderColor = (decl) => {
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const { prop, value, important, raws, source } = decl;
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const _property_split = hyphenate(prop).split('-');
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let property = _property_split[_property_split.length - 1];
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{
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property = capitalize(property);
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}
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const splitResult = value.replace(/\s*,\s*/g, ',').split(/\s+/); // 1pt
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switch (splitResult.length) {
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case 1:
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if (_property_split.length === 3) {
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// border-top-width
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return [decl];
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}
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// border-width
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splitResult.push(splitResult[0], splitResult[0], splitResult[0]);
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break;
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case 2:
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splitResult.push(splitResult[0], splitResult[1]);
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break;
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case 3:
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splitResult.push(splitResult[1]);
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break;
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}
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return [
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createDecl(borderTop() + property, splitResult[0], important, raws, source),
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createDecl(borderRight() + property, splitResult[1], important, raws, source),
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createDecl(borderBottom() + property, splitResult[2], important, raws, source),
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createDecl(borderLeft() + property, splitResult[3], important, raws, source),
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];
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};
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const transformBorderColorNvue = (decl) => {
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const { prop, value, important, raws, source } = decl;
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let property = hyphenate(prop).split('-')[1];
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{
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property = capitalize(property);
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}
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const splitResult = value.replace(/\s*,\s*/g, ',').split(/\s+/);
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switch (splitResult.length) {
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case 1:
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return [decl];
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case 2:
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splitResult.push(splitResult[0], splitResult[1]);
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break;
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case 3:
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splitResult.push(splitResult[1]);
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break;
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}
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return [
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createDecl(borderTop + property, splitResult[0], important, raws, source),
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createDecl(borderRight + property, splitResult[1], important, raws, source),
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createDecl(borderBottom + property, splitResult[2], important, raws, source),
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createDecl(borderLeft + property, splitResult[3], important, raws, source),
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];
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};
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const transformBorderStyle = transformBorderColor;
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const transformBorderStyleNvue = transformBorderColorNvue;
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const transformBorderWidth = transformBorderColor;
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const transformBorderWidthNvue = transformBorderColorNvue;
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function createTransformBorder(options) {
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return (decl) => {
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const borderWidth = () => {
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return 'Width';
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};
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const borderStyle = () => {
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return 'Style';
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};
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const borderColor = () => {
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return 'Color';
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};
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const { prop, value, important, raws, source } = decl;
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let splitResult = value.replace(/\s*,\s*/g, ',').split(/\s+/);
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const havVar = splitResult.some((str) => str.startsWith('var('));
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let result = [];
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// 包含 var ，直接视为 width/style/color 都使用默认值
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if (havVar) {
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result = splitResult;
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splitResult = [];
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}
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else {
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result = [
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/^[\d\.]+\S*|^(thin|medium|thick)$/,
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/^(solid|dashed|dotted|none)$/,
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/\S+/,
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].map((item) => {
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const index = splitResult.findIndex((str) => item.test(str));
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return index < 0 ? null : splitResult.splice(index, 1)[0];
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});
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}
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if (splitResult.length > 0 && value != '') {
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return [decl];
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}
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const defaultWidth = (str) => {
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if (str != null) {
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return str.trim();
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}
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return 'medium';
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};
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const defaultStyle = (str) => {
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if (str != null) {
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return str.trim();
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}
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return 'none';
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};
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const defaultColor = (str) => {
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if (str != null) {
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return str.trim();
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}
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return '#000000';
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};
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return [
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...transformBorderWidth(createDecl(prop + borderWidth(), defaultWidth(result[0]), important, raws, source)),
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...transformBorderStyle(createDecl(prop + borderStyle(), defaultStyle(result[1]), important, raws, source)),
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...transformBorderColor(createDecl(prop + borderColor(), defaultColor(result[2]), important, raws, source)),
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];
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};
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}
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function createTransformBorderNvue(options) {
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return (decl) => {
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const borderWidth = 'Width';
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const borderStyle = 'Style';
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const borderColor = 'Color';
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const { prop, value, important, raws, source } = decl;
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const splitResult = value.replace(/\s*,\s*/g, ',').split(/\s+/);
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const result = [
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/^[\d\.]+\S*|^(thin|medium|thick)$/,
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/^(solid|dashed|dotted|none)$/,
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/\S+/,
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].map((item) => {
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const index = splitResult.findIndex((str) => item.test(str));
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return index < 0 ? null : splitResult.splice(index, 1)[0];
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});
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if (splitResult.length) {
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return [decl];
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}
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return [
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createDecl(prop + borderWidth, (result[0] || '0').trim(), important, raws, source),
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createDecl(prop + borderStyle, (result[1] || 'solid').trim(), important, raws, source),
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createDecl(prop + borderColor, (result[2] || '#000000').trim(), important, raws, source),
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];
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};
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}
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const borderTopLeftRadius = 'borderTopLeftRadius';
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const borderTopRightRadius = 'borderTopRightRadius';
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const borderBottomRightRadius = 'borderBottomRightRadius';
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const borderBottomLeftRadius = 'borderBottomLeftRadius';
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const transformBorderRadius = (decl) => {
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const { value, important, raws, source } = decl;
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const splitResult = value.split(/\s+/);
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if (value.includes('/')) {
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return [decl];
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}
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switch (splitResult.length) {
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case 1:
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splitResult.push(splitResult[0], splitResult[0], splitResult[0]);
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break;
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case 2:
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splitResult.push(splitResult[0], splitResult[1]);
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break;
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case 3:
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splitResult.push(splitResult[1]);
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break;
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}
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return [
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createDecl(borderTopLeftRadius, splitResult[0], important, raws, source),
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createDecl(borderTopRightRadius, splitResult[1], important, raws, source),
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createDecl(borderBottomRightRadius, splitResult[2], important, raws, source),
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createDecl(borderBottomLeftRadius, splitResult[3], important, raws, source),
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];
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};
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const transformBorderRadiusNvue = (decl) => {
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const { value, important, raws, source } = decl;
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const splitResult = value.split(/\s+/);
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if (value.includes('/')) {
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return [decl];
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}
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// const isUvuePlatform = options.type == 'uvue'
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switch (splitResult.length) {
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case 1:
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return [decl];
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case 2:
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splitResult.push(splitResult[0], splitResult[1]);
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break;
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case 3:
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splitResult.push(splitResult[1]);
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break;
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}
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return [
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createDecl(borderTopLeftRadius, splitResult[0], important, raws, source),
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createDecl(borderTopRightRadius, splitResult[1], important, raws, source),
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createDecl(borderBottomRightRadius, splitResult[2], important, raws, source),
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createDecl(borderBottomLeftRadius, splitResult[3], important, raws, source),
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];
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};
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const flexDirection = 'flexDirection';
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const flexWrap = 'flexWrap';
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const transformFlexFlow = (decl) => {
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const { value, important, raws, source } = decl;
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const splitResult = value.split(/\s+/);
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const result = [
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/^(column|column-reverse|row|row-reverse)$/,
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/^(nowrap|wrap|wrap-reverse)$/,
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].map((item) => {
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const index = splitResult.findIndex((str) => item.test(str));
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return index < 0 ? null : splitResult.splice(index, 1)[0];
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});
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if (splitResult.length) {
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return [decl];
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}
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return [
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createDecl(flexDirection, result[0] || 'column', important, raws, source),
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createDecl(flexWrap, result[1] || 'nowrap', important, raws, source),
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];
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};
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const top = 'Top';
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const right = 'Right';
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const bottom = 'Bottom';
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const left = 'Left';
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const createTransformBox = (type) => {
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return (decl) => {
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const { value, important, raws, source } = decl;
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const splitResult = value.split(/\s+/);
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switch (splitResult.length) {
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case 1:
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splitResult.push(splitResult[0], splitResult[0], splitResult[0]);
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break;
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case 2:
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splitResult.push(splitResult[0], splitResult[1]);
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break;
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case 3:
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splitResult.push(splitResult[1]);
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break;
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}
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return [
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createDecl(type + top, splitResult[0], important, raws, source),
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createDecl(type + right, splitResult[1], important, raws, source),
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createDecl(type + bottom, splitResult[2], important, raws, source),
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createDecl(type + left, splitResult[3], important, raws, source),
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];
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};
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};
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const transformMargin = createTransformBox('margin');
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const transformPadding = createTransformBox('padding');
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const transitionProperty = 'transitionProperty';
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const transitionDuration = 'transitionDuration';
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const transitionTimingFunction = 'transitionTimingFunction';
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const transitionDelay = 'transitionDelay';
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const transformTransition = (decl) => {
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const { value, important, raws, source } = decl;
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const result = [];
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let match;
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// 针对 cubic-bezier 特殊处理
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// eg: cubic-bezier(0.42, 0, 1.0, 3) // (0.2,-2,0.8,2)
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if (decl.value.includes('cubic-bezier')) {
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const CHUNK_REGEXP = /^(\S*)?\s*(\d*\.?\d+(?:ms|s)?)?\s*((\S*)|cubic-bezier\(.*\))?\s*(\d*\.?\d+(?:ms|s)?)?$/;
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match = value.match(CHUNK_REGEXP);
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}
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else {
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const CHUNK_REGEXP = /^(\S*)?\s*(\d*\.?\d+(?:ms|s)?)?\s*(\S*)?\s*(\d*\.?\d+(?:ms|s)?)?$/;
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match = value.match(CHUNK_REGEXP);
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}
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if (!match) {
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return result;
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}
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match[1] &&
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result.push(createDecl(transitionProperty, match[1], important, raws, source));
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match[2] &&
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result.push(createDecl(transitionDuration, match[2], important, raws, source));
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match[3] &&
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result.push(createDecl(transitionTimingFunction, match[3], important, raws, source));
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match[4] &&
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result.push(createDecl(transitionDelay, match[4], important, raws, source));
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return result;
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};
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const flexGrow = 'flexGrow';
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const flexShrink = 'flexShrink';
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const flexBasis = 'flexBasis';
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const transformFlex = (decl) => {
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const { value, important, raws, source } = decl;
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const result = [];
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const splitResult = value.trim().split(/\s+/);
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// 是否 flex-grow 的有效值 <number [0,∞]>
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const isFlexGrowValid = (v) => isNumber(Number(v)) && !Number.isNaN(Number(v));
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const isFlexShrinkValid = (v) => isNumber(Number(v)) && !Number.isNaN(Number(v)) && Number(v) >= 0;
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const isFlexBasisValid = (v) => typeof v === 'string' && v.trim() !== '';
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if (splitResult.length === 1) {
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// 关键字处理
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if (value === 'none') {
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result.push(createDecl(flexGrow, '0', important, raws, source), createDecl(flexShrink, '0', important, raws, source), createDecl(flexBasis, 'auto', important, raws, source));
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return result;
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}
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if (value === 'auto') {
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result.push(createDecl(flexGrow, '1', important, raws, source), createDecl(flexShrink, '1', important, raws, source), createDecl(flexBasis, 'auto', important, raws, source));
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return result;
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}
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if (value === 'initial') {
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result.push(createDecl(flexGrow, '0', important, raws, source), createDecl(flexShrink, '1', important, raws, source), createDecl(flexBasis, 'auto', important, raws, source));
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return result;
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}
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const v = splitResult[0];
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// number 视为 flex-grow
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if (isFlexGrowValid(v)) {
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if (Number(v) < 0) {
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return [];
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}
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result.push(createDecl(flexGrow, v, important, raws, source), createDecl(flexShrink, '1', important, raws, source), createDecl(flexBasis, '0%', important, raws, source));
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return result;
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}
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else if (isFlexBasisValid(v)) {
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result.push(createDecl(flexGrow, '1', important, raws, source), createDecl(flexShrink, '1', important, raws, source), createDecl(flexBasis, v, important, raws, source));
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return result;
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}
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else {
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return [decl];
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}
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|
}
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else if (splitResult.length === 2) {
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const [v1, v2] = splitResult;
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|
if (isFlexGrowValid(v1)) {
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|
if (isFlexShrinkValid(v2)) {
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// flex: 1 2 => 1 2 0%
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|
|
result.push(createDecl(flexGrow, v1, important, raws, source), createDecl(flexShrink, v2, important, raws, source), createDecl(flexBasis, '0%', important, raws, source));
|
|
|
return result;
|
|
|
}
|
|
|
else {
|
|
|
// flex: 1 100px => 1 1 100px
|
|
|
result.push(createDecl(flexGrow, v1, important, raws, source), createDecl(flexShrink, '1', important, raws, source), createDecl(flexBasis, v2, important, raws, source));
|
|
|
return result;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
return [decl];
|
|
|
}
|
|
|
}
|
|
|
else if (splitResult.length === 3) {
|
|
|
const [v1, v2, v3] = splitResult;
|
|
|
if (isFlexGrowValid(v1) && isFlexShrinkValid(v2)) {
|
|
|
result.push(createDecl(flexGrow, v1, important, raws, source), createDecl(flexShrink, v2, important, raws, source), createDecl(flexBasis, v3, important, raws, source));
|
|
|
return result;
|
|
|
}
|
|
|
else {
|
|
|
// fallback
|
|
|
return [decl];
|
|
|
}
|
|
|
}
|
|
|
// 其它情况，原样返回
|
|
|
return [decl];
|
|
|
};
|
|
|
|
|
|
function getDeclTransforms(options) {
|
|
|
const transformBorder = options.type == 'uvue'
|
|
|
? createTransformBorder()
|
|
|
: createTransformBorderNvue();
|
|
|
const styleMap = {
|
|
|
transition: transformTransition,
|
|
|
border: transformBorder,
|
|
|
background: createTransformBackground(options),
|
|
|
borderTop: transformBorder,
|
|
|
borderRight: transformBorder,
|
|
|
borderBottom: transformBorder,
|
|
|
borderLeft: transformBorder,
|
|
|
borderStyle: options.type == 'uvue' ? transformBorderStyle : transformBorderStyleNvue,
|
|
|
borderWidth: options.type == 'uvue' ? transformBorderWidth : transformBorderWidthNvue,
|
|
|
borderColor: options.type == 'uvue' ? transformBorderColor : transformBorderColorNvue,
|
|
|
borderRadius: options.type == 'uvue'
|
|
|
? transformBorderRadius
|
|
|
: transformBorderRadiusNvue,
|
|
|
// uvue已经支持这些简写属性，不需要展开
|
|
|
// margin,padding继续展开，确保样式的优先级
|
|
|
margin: transformMargin,
|
|
|
padding: transformPadding,
|
|
|
flexFlow: transformFlexFlow,
|
|
|
};
|
|
|
if (options.type === 'uvue') {
|
|
|
styleMap.flex = transformFlex;
|
|
|
}
|
|
|
let result = {};
|
|
|
{
|
|
|
result = styleMap;
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
let DeclTransforms;
|
|
|
const expanded = Symbol('expanded');
|
|
|
function expand(options) {
|
|
|
const plugin = {
|
|
|
postcssPlugin: `${options.type || 'nvue'}:expand`,
|
|
|
Declaration(decl) {
|
|
|
if (decl[expanded]) {
|
|
|
return;
|
|
|
}
|
|
|
if (!DeclTransforms) {
|
|
|
DeclTransforms = getDeclTransforms(options);
|
|
|
}
|
|
|
const transform = DeclTransforms[decl.prop];
|
|
|
if (transform) {
|
|
|
const res = transform(decl);
|
|
|
const isSame = res.length === 1 && res[0] === decl;
|
|
|
if (!isSame) {
|
|
|
decl.replaceWith(res);
|
|
|
}
|
|
|
}
|
|
|
decl[expanded] = true;
|
|
|
},
|
|
|
};
|
|
|
return plugin;
|
|
|
}
|
|
|
|
|
|
export { expand };
|
