492 lines
20 KiB
JavaScript
492 lines
20 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.convertAttributeTokens = exports.convertAttributes = void 0;
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const common_1 = require("./common");
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const mustache_1 = require("./mustache");
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const text_1 = require("./text");
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const errors_1 = require("../../errors");
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/** Convert for Attributes */
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function* convertAttributes(attributes, parent, ctx) {
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for (const attr of attributes) {
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if (attr.type === "Attribute") {
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yield convertAttribute(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Spread") {
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yield convertSpreadAttribute(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Binding") {
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yield convertBindingDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "EventHandler") {
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yield convertEventHandlerDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Class") {
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yield convertClassDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "StyleDirective") {
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yield convertStyleDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Transition") {
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yield convertTransitionDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Animation") {
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yield convertAnimationDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Action") {
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yield convertActionDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Let") {
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yield convertLetDirective(attr, parent, ctx);
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continue;
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}
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if (attr.type === "Ref") {
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throw new errors_1.ParseError("Ref are not supported.", attr.start, ctx);
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}
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if (attr.type === "Style") {
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throw new errors_1.ParseError(`Svelte v3.46.0 is no longer supported. Please use Svelte>=v3.46.1.`, attr.start, ctx);
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}
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throw new errors_1.ParseError(`Unknown directive or attribute (${attr.type}) are not supported.`, attr.start, ctx);
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}
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}
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exports.convertAttributes = convertAttributes;
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/** Convert for attribute tokens */
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function* convertAttributeTokens(attributes, parent, ctx) {
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var _a, _b;
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for (const attr of attributes) {
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const attribute = Object.assign({ type: "SvelteAttribute", boolean: false, key: null, value: [], parent }, ctx.getConvertLocation({
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start: attr.key.start,
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end: (_b = (_a = attr.value) === null || _a === void 0 ? void 0 : _a.end) !== null && _b !== void 0 ? _b : attr.key.end,
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}));
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attribute.key = Object.assign({ type: "SvelteName", name: attr.key.name, parent: attribute }, ctx.getConvertLocation(attr.key));
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ctx.addToken("HTMLIdentifier", attr.key);
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if (attr.value == null) {
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attribute.boolean = true;
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}
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else {
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attribute.value.push((0, text_1.convertAttributeValueTokenToLiteral)(attr.value, attribute, ctx));
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}
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yield attribute;
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}
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}
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exports.convertAttributeTokens = convertAttributeTokens;
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/** Convert for Attribute */
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function convertAttribute(node, parent, ctx) {
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const attribute = Object.assign({ type: "SvelteAttribute", boolean: false, key: null, value: [], parent }, ctx.getConvertLocation(node));
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const keyStart = ctx.code.indexOf(node.name, node.start);
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const keyRange = { start: keyStart, end: keyStart + node.name.length };
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attribute.key = Object.assign({ type: "SvelteName", name: node.name, parent: attribute }, ctx.getConvertLocation(keyRange));
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if (node.value === true) {
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// Boolean attribute
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attribute.boolean = true;
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ctx.addToken("HTMLIdentifier", keyRange);
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return attribute;
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}
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const shorthand = node.value.find((v) => v.type === "AttributeShorthand");
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if (shorthand) {
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const key = Object.assign(Object.assign({}, attribute.key), { type: "Identifier" });
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const sAttr = {
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type: "SvelteShorthandAttribute",
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key,
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value: key,
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parent,
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loc: attribute.loc,
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range: attribute.range,
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};
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key.parent = sAttr;
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ctx.scriptLet.addObjectShorthandProperty(attribute.key, sAttr, (es) => {
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if (
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// FIXME: Older parsers may use the same node. In that case, do not replace.
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// We will drop support for ESLint v7 in the next major version and remove this branch.
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es.key !== es.value) {
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sAttr.key = es.key;
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}
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sAttr.value = es.value;
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});
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return sAttr;
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}
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processAttributeValue(node.value, attribute, ctx);
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// Not required for shorthands. Therefore, register the token here.
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ctx.addToken("HTMLIdentifier", keyRange);
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return attribute;
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}
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/** Common process attribute value */
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function processAttributeValue(nodeValue, attribute, ctx) {
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for (let index = 0; index < nodeValue.length; index++) {
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const v = nodeValue[index];
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if (v.type === "Text") {
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if (v.start === v.end) {
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// Empty
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// https://github.com/sveltejs/svelte/pull/6539
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continue;
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}
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const next = nodeValue[index + 1];
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if (next && next.start < v.end) {
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// Maybe bug in Svelte can cause the completion index to shift.
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// console.log(ctx.getText(v), v.data)
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v.end = next.start;
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}
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attribute.value.push((0, text_1.convertTextToLiteral)(v, attribute, ctx));
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continue;
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}
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if (v.type === "MustacheTag") {
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const mustache = (0, mustache_1.convertMustacheTag)(v, attribute, ctx);
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attribute.value.push(mustache);
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continue;
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}
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const u = v;
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throw new errors_1.ParseError(`Unknown attribute value (${u.type}) are not supported.`, u.start, ctx);
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}
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}
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/** Convert for Spread */
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function convertSpreadAttribute(node, parent, ctx) {
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const attribute = Object.assign({ type: "SvelteSpreadAttribute", argument: null, parent }, ctx.getConvertLocation(node));
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const spreadStart = ctx.code.indexOf("...", node.start);
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ctx.addToken("Punctuator", {
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start: spreadStart,
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end: spreadStart + 3,
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});
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ctx.scriptLet.addExpression(node.expression, attribute, null, (es) => {
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attribute.argument = es;
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});
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return attribute;
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}
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/** Convert for Binding Directive */
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function convertBindingDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "Binding", key: null, shorthand: false, expression: null, parent }, ctx.getConvertLocation(node));
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processDirective(node, directive, ctx, {
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processExpression(expression, shorthand) {
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directive.shorthand = shorthand;
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return ctx.scriptLet.addExpression(expression, directive, null, (es, { getScope }) => {
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directive.expression = es;
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const scope = getScope(es);
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const reference = scope.references.find((ref) => ref.identifier === es);
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if (reference) {
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// The bind directive does read and write.
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reference.isWrite = () => true;
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reference.isWriteOnly = () => false;
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reference.isReadWrite = () => true;
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reference.isReadOnly = () => false;
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reference.isRead = () => true;
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}
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});
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},
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});
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return directive;
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}
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/** Convert for EventHandler Directive */
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function convertEventHandlerDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "EventHandler", key: null, expression: null, parent }, ctx.getConvertLocation(node));
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const typing = buildEventHandlerType(parent.parent, node.name, ctx);
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processDirective(node, directive, ctx, {
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processExpression: buildProcessExpressionForExpression(directive, ctx, typing),
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});
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return directive;
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}
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/** Build event handler type */
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function buildEventHandlerType(element, eventName, ctx) {
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const nativeEventHandlerType = `(e:${conditional({
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check: `'${eventName}'`,
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extends: `infer EVT`,
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true: conditional({
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check: `EVT`,
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extends: `keyof HTMLElementEventMap`,
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true: `HTMLElementEventMap[EVT]`,
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false: `CustomEvent<any>`,
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}),
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false: `never`,
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})})=>void`;
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if (element.type !== "SvelteElement") {
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return nativeEventHandlerType;
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}
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const elementName = ctx.elements.get(element).name;
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if (element.kind === "component") {
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const componentEventsType = `import('svelte').ComponentEvents<${elementName}>`;
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return `(e:${conditional({
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check: `0`,
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extends: `(1 & ${componentEventsType})`,
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// `componentEventsType` is `any`
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// `@typescript-eslint/parser` currently cannot parse `*.svelte` import types correctly.
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// So if we try to do a correct type parsing, it's argument type will be `any`.
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// A workaround is to inject the type directly, as `CustomEvent<any>` is better than `any`.
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true: `CustomEvent<any>`,
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// `componentEventsType` has an exact type.
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false: conditional({
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check: `'${eventName}'`,
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extends: `infer EVT`,
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true: conditional({
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check: `EVT`,
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extends: `keyof ${componentEventsType}`,
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true: `${componentEventsType}[EVT]`,
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false: `CustomEvent<any>`,
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}),
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false: `never`,
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}),
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})})=>void`;
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}
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if (element.kind === "special") {
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if (elementName === "svelte:component")
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return `(e:CustomEvent<any>)=>void`;
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return nativeEventHandlerType;
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}
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const attrName = `on:${eventName}`;
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const svelteHTMLElementsType = "import('svelte/elements').SvelteHTMLElements";
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return conditional({
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check: `'${elementName}'`,
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extends: "infer EL",
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true: conditional({
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check: `EL`,
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extends: `keyof ${svelteHTMLElementsType}`,
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true: conditional({
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check: `'${attrName}'`,
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extends: "infer ATTR",
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true: conditional({
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check: `ATTR`,
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extends: `keyof ${svelteHTMLElementsType}[EL]`,
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true: `${svelteHTMLElementsType}[EL][ATTR]`,
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false: nativeEventHandlerType,
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}),
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false: `never`,
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}),
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false: nativeEventHandlerType,
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}),
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false: `never`,
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});
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/** Generate `C extends E ? T : F` type. */
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function conditional(types) {
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return `${types.check} extends ${types.extends}?(${types.true}):(${types.false})`;
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}
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}
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/** Convert for Class Directive */
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function convertClassDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "Class", key: null, shorthand: false, expression: null, parent }, ctx.getConvertLocation(node));
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processDirective(node, directive, ctx, {
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processExpression(expression, shorthand) {
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directive.shorthand = shorthand;
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return ctx.scriptLet.addExpression(expression, directive);
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},
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});
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return directive;
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}
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/** Convert for Style Directive */
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function convertStyleDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteStyleDirective", key: null, shorthand: false, value: [], parent }, ctx.getConvertLocation(node));
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processDirectiveKey(node, directive, ctx);
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const keyName = directive.key.name;
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if (node.value === true) {
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const shorthandDirective = directive;
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shorthandDirective.shorthand = true;
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ctx.scriptLet.addExpression(keyName, shorthandDirective.key, null, (expression) => {
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if (expression.type !== "Identifier") {
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throw new errors_1.ParseError(`Expected JS identifier or attribute value.`, expression.range[0], ctx);
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}
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shorthandDirective.key.name = expression;
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});
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return shorthandDirective;
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}
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ctx.addToken("HTMLIdentifier", {
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start: keyName.range[0],
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end: keyName.range[1],
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});
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processAttributeValue(node.value, directive, ctx);
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return directive;
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}
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/** Convert for Transition Directive */
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function convertTransitionDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "Transition", intro: node.intro, outro: node.outro, key: null, expression: null, parent }, ctx.getConvertLocation(node));
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processDirective(node, directive, ctx, {
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processExpression: buildProcessExpressionForExpression(directive, ctx, null),
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processName: (name) => ctx.scriptLet.addExpression(name, directive.key, null, buildExpressionTypeChecker(["Identifier"], ctx)),
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});
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return directive;
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}
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/** Convert for Animation Directive */
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function convertAnimationDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "Animation", key: null, expression: null, parent }, ctx.getConvertLocation(node));
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processDirective(node, directive, ctx, {
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processExpression: buildProcessExpressionForExpression(directive, ctx, null),
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processName: (name) => ctx.scriptLet.addExpression(name, directive.key, null, buildExpressionTypeChecker(["Identifier"], ctx)),
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});
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return directive;
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}
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/** Convert for Action Directive */
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function convertActionDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "Action", key: null, expression: null, parent }, ctx.getConvertLocation(node));
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processDirective(node, directive, ctx, {
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processExpression: buildProcessExpressionForExpression(directive, ctx, `Parameters<typeof ${node.name}>[1]`),
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processName: (name) => ctx.scriptLet.addExpression(name, directive.key, null, buildExpressionTypeChecker(["Identifier", "MemberExpression"], ctx)),
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});
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return directive;
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}
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/** Convert for Let Directive */
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function convertLetDirective(node, parent, ctx) {
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const directive = Object.assign({ type: "SvelteDirective", kind: "Let", key: null, expression: null, parent }, ctx.getConvertLocation(node));
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processDirective(node, directive, ctx, {
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processPattern(pattern) {
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return ctx.letDirCollections
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.getCollection()
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.addPattern(pattern, directive, buildLetDirectiveType(parent.parent, node.name, ctx));
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},
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processName: node.expression
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? undefined
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: (name) => {
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// shorthand
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ctx.letDirCollections
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.getCollection()
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.addPattern(name, directive, buildLetDirectiveType(parent.parent, node.name, ctx), (es) => {
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directive.expression = es;
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});
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return [];
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},
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});
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return directive;
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}
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/** Build let directive param type */
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function buildLetDirectiveType(element, letName, ctx) {
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if (element.type !== "SvelteElement") {
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return "any";
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}
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let slotName = "default";
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let componentName;
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const svelteNode = ctx.elements.get(element);
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const slotAttr = svelteNode.attributes.find((attr) => {
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return attr.type === "Attribute" && attr.name === "slot";
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});
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if (slotAttr) {
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if (Array.isArray(slotAttr.value) &&
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slotAttr.value.length === 1 &&
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slotAttr.value[0].type === "Text") {
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slotName = slotAttr.value[0].data;
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}
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else {
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return "any";
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}
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const parent = findParentComponent(element);
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if (parent == null)
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return "any";
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componentName = ctx.elements.get(parent).name;
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}
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else {
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if (element.kind === "component") {
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componentName = svelteNode.name;
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}
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else {
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const parent = findParentComponent(element);
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if (parent == null)
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return "any";
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componentName = ctx.elements.get(parent).name;
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}
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}
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return `${String(componentName)}['$$slot_def'][${JSON.stringify(slotName)}][${JSON.stringify(letName)}]`;
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/** Find parent component element */
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function findParentComponent(node) {
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let parent = node.parent;
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while (parent && parent.type !== "SvelteElement") {
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parent = parent.parent;
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}
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if (!parent || parent.kind !== "component") {
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return null;
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}
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return parent;
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}
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}
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/** Common process for directive */
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function processDirective(node, directive, ctx, processors) {
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processDirectiveKey(node, directive, ctx);
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processDirectiveExpression(node, directive, ctx, processors);
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}
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/** Common process for directive key */
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function processDirectiveKey(node, directive, ctx) {
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const colonIndex = ctx.code.indexOf(":", directive.range[0]);
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ctx.addToken("HTMLIdentifier", {
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start: directive.range[0],
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end: colonIndex,
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});
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const nameIndex = ctx.code.indexOf(node.name, colonIndex + 1);
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const nameRange = {
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start: nameIndex,
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end: nameIndex + node.name.length,
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};
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let keyEndIndex = nameRange.end;
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// modifiers
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if (ctx.code[nameRange.end] === "|") {
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let nextStart = nameRange.end + 1;
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let nextEnd = (0, common_1.indexOf)(ctx.code, (c) => c === "=" || c === ">" || c === "/" || c === "|" || !c.trim(), nextStart);
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ctx.addToken("HTMLIdentifier", { start: nextStart, end: nextEnd });
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while (ctx.code[nextEnd] === "|") {
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nextStart = nextEnd + 1;
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nextEnd = (0, common_1.indexOf)(ctx.code, (c) => c === "=" || c === ">" || c === "/" || c === "|" || !c.trim(), nextStart);
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ctx.addToken("HTMLIdentifier", { start: nextStart, end: nextEnd });
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}
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keyEndIndex = nextEnd;
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}
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const key = (directive.key = Object.assign({ type: "SvelteDirectiveKey", name: null, modifiers: node.modifiers, parent: directive }, ctx.getConvertLocation({ start: node.start, end: keyEndIndex })));
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// put name
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key.name = Object.assign({ type: "SvelteName", name: node.name, parent: key }, ctx.getConvertLocation(nameRange));
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}
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/** Common process for directive expression */
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function processDirectiveExpression(node, directive, ctx, processors) {
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const key = directive.key;
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const keyName = key.name;
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let shorthand = false;
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if (node.expression) {
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shorthand =
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node.expression.type === "Identifier" &&
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node.expression.name === node.name &&
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(0, common_1.getWithLoc)(node.expression).start === keyName.range[0];
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if (shorthand && (0, common_1.getWithLoc)(node.expression).end !== keyName.range[1]) {
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// The identifier location may be incorrect in some edge cases.
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// e.g. bind:value=""
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(0, common_1.getWithLoc)(node.expression).end = keyName.range[1];
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}
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if (processors.processExpression) {
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processors.processExpression(node.expression, shorthand).push((es) => {
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if (node.expression && es.type !== node.expression.type) {
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throw new errors_1.ParseError(`Expected ${node.expression.type}, but ${es.type} found.`, es.range[0], ctx);
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}
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directive.expression = es;
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});
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}
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else {
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processors.processPattern(node.expression, shorthand).push((es) => {
|
|
directive.expression = es;
|
|
});
|
|
}
|
|
}
|
|
if (!shorthand) {
|
|
if (processors.processName) {
|
|
processors.processName(keyName).push((es) => {
|
|
key.name = es;
|
|
});
|
|
}
|
|
else {
|
|
ctx.addToken("HTMLIdentifier", {
|
|
start: keyName.range[0],
|
|
end: keyName.range[1],
|
|
});
|
|
}
|
|
}
|
|
}
|
|
/** Build processExpression for Expression */
|
|
function buildProcessExpressionForExpression(directive, ctx, typing) {
|
|
return (expression) => {
|
|
return ctx.scriptLet.addExpression(expression, directive, typing);
|
|
};
|
|
}
|
|
/** Build expression type checker to script let callbacks */
|
|
function buildExpressionTypeChecker(expected, ctx) {
|
|
return (node) => {
|
|
if (!expected.includes(node.type)) {
|
|
throw new errors_1.ParseError(`Expected JS ${expected.join(", or ")}, but ${node.type} found.`, node.range[0], ctx);
|
|
}
|
|
};
|
|
}
|