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Convert src/compiler/compile/render_ssr/handlers/Element.ts to JavaScript

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pull/8569/head
Simon Holthausen 3 years ago
parent 611637975a
commit 0a8d5fe08c
1 changed files with 228 additions and 257 deletions
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179
src/compiler/compile/render_ssr/handlers/Element.ts
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@ -1,37 +1,28 @@
import { is_void } from '../../../../shared/utils/names'; import { is_void } from '../../../../shared/utils/names.js';
import { import { get_attribute_expression, get_attribute_value, get_class_attribute_value } from './shared/get_attribute_value';
get_attribute_expression,
get_attribute_value,
get_class_attribute_value
} from './shared/get_attribute_value';
import { boolean_attributes } from '../../../../shared/boolean_attributes'; import { boolean_attributes } from '../../../../shared/boolean_attributes';
import { is_name_contenteditable, is_contenteditable } from '../../utils/contenteditable'; import { is_name_contenteditable, is_contenteditable } from '../../utils/contenteditable';
import Renderer, { RenderOptions } from '../Renderer';
import Binding from '../../nodes/Binding';
import Element from '../../nodes/Element';
import { p, x } from 'code-red'; import { p, x } from 'code-red';
import Expression from '../../nodes/shared/Expression';
import remove_whitespace_children from './utils/remove_whitespace_children'; import remove_whitespace_children from './utils/remove_whitespace_children';
import fix_attribute_casing from '../../render_dom/wrappers/Element/fix_attribute_casing'; import fix_attribute_casing from '../../render_dom/wrappers/Element/fix_attribute_casing';
import { namespaces } from '../../../utils/namespaces'; import { namespaces } from '../../../utils/namespaces';
import { regex_starts_with_newline } from '../../../utils/patterns'; import { regex_starts_with_newline } from '../../../utils/patterns';
import { Node, Expression as ESExpression } from 'estree';
export default function (node: Element, renderer: Renderer, options: RenderOptions) { /**
* @param {import('../../nodes/Element.js').default} node
* @param {import('../Renderer.js').default} renderer
* @param {import('../Renderer.js').RenderOptions} options
*/
export default function (node, renderer, options) {
const children = remove_whitespace_children(node.children, node.next); const children = remove_whitespace_children(node.children, node.next);
// awkward special case // awkward special case
let node_contents; let node_contents;
const contenteditable = is_contenteditable(node); const contenteditable = is_contenteditable(node);
if (node.is_dynamic_element) { if (node.is_dynamic_element) {
renderer.push(); renderer.push();
} }
renderer.add_string('<'); renderer.add_string('<');
add_tag_name(); add_tag_name();
const class_expression_list = node.classes.map((class_directive) => { const class_expression_list = node.classes.map((class_directive) => {
const { expression, name } = class_directive; const { expression, name } = class_directive;
const snippet = expression ? expression.node : x `#ctx.${name}`; // TODO is this right? const snippet = expression ? expression.node : x `#ctx.${name}`; // TODO is this right?
@ -40,104 +31,89 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
if (node.needs_manual_style_scoping) { if (node.needs_manual_style_scoping) {
class_expression_list.push(x `"${node.component.stylesheet.id}"`); class_expression_list.push(x `"${node.component.stylesheet.id}"`);
} }
const class_expression = const class_expression = class_expression_list.length > 0 &&
class_expression_list.length > 0 &&
class_expression_list.reduce((lhs, rhs) => x `${lhs} + ' ' + ${rhs}`); class_expression_list.reduce((lhs, rhs) => x `${lhs} + ' ' + ${rhs}`);
const style_expression_list = node.styles.map((style_directive) => { const style_expression_list = node.styles.map((style_directive) => {
let { let { name, important, expression: { node: expression } } = style_directive;
name,
important,
expression: { node: expression }
} = style_directive;
if (important) { if (important) {
expression = x `${expression} + ' !important'`; expression = x `${expression} + ' !important'`;
} }
return p `"${name}": ${expression}`; return p `"${name}": ${expression}`;
}); });
const style_expression = style_expression_list.length > 0 && x `{ ${style_expression_list} }`; const style_expression = style_expression_list.length > 0 && x `{ ${style_expression_list} }`;
if (node.attributes.some((attr) => attr.is_spread)) { if (node.attributes.some((attr) => attr.is_spread)) {
// TODO dry this out // TODO dry this out
const args = []; const args = [];
node.attributes.forEach((attribute) => { node.attributes.forEach((attribute) => {
if (attribute.is_spread) { if (attribute.is_spread) {
args.push(x `@escape_object(${attribute.expression.node})`); args.push(x `@escape_object(${attribute.expression.node})`);
} else { }
const attr_name = else {
node.namespace === namespaces.foreign const attr_name = node.namespace === namespaces.foreign
? attribute.name ? attribute.name
: fix_attribute_casing(attribute.name); : fix_attribute_casing(attribute.name);
const name = attribute.name.toLowerCase(); const name = attribute.name.toLowerCase();
if (name === 'value' && node.name.toLowerCase() === 'textarea') { if (name === 'value' && node.name.toLowerCase() === 'textarea') {
node_contents = get_attribute_value(attribute); node_contents = get_attribute_value(attribute);
} else if (attribute.is_true) { }
else if (attribute.is_true) {
args.push(x `{ ${attr_name}: true }`); args.push(x `{ ${attr_name}: true }`);
} else if ( }
boolean_attributes.has(name) && else if (boolean_attributes.has(name) &&
attribute.chunks.length === 1 && attribute.chunks.length === 1 &&
attribute.chunks[0].type !== 'Text' attribute.chunks[0].type !== 'Text') {
) {
// a boolean attribute with one non-Text chunk // a boolean attribute with one non-Text chunk
args.push(x`{ ${attr_name}: ${(attribute.chunks[0] as Expression).node} || null }`); args.push(x `{ ${attr_name}: ${( /** @type {Expression} */(attribute.chunks[0])).node} || null }`);
} else if (attribute.chunks.length === 1 && attribute.chunks[0].type !== 'Text') { }
const snippet = (attribute.chunks[0] as Expression).node; else if (attribute.chunks.length === 1 && attribute.chunks[0].type !== 'Text') {
const snippet = ( /** @type {Expression} */(attribute.chunks[0])).node;
args.push(x `{ ${attr_name}: @escape_attribute_value(${snippet}) }`); args.push(x `{ ${attr_name}: @escape_attribute_value(${snippet}) }`);
} else { }
else {
args.push(x `{ ${attr_name}: ${get_attribute_value(attribute)} }`); args.push(x `{ ${attr_name}: ${get_attribute_value(attribute)} }`);
} }
} }
}); });
renderer.add_expression(x `@spread([${args}], { classes: ${class_expression}, styles: ${style_expression} })`);
renderer.add_expression( }
x`@spread([${args}], { classes: ${class_expression}, styles: ${style_expression} })` else {
);
} else {
let add_class_attribute = !!class_expression; let add_class_attribute = !!class_expression;
let add_style_attribute = !!style_expression; let add_style_attribute = !!style_expression;
node.attributes.forEach((attribute) => { node.attributes.forEach((attribute) => {
const name = attribute.name.toLowerCase(); const name = attribute.name.toLowerCase();
const attr_name = const attr_name = node.namespace === namespaces.foreign
node.namespace === namespaces.foreign
? attribute.name ? attribute.name
: fix_attribute_casing(attribute.name); : fix_attribute_casing(attribute.name);
if (name === 'value' && node.name.toLowerCase() === 'textarea') { if (name === 'value' && node.name.toLowerCase() === 'textarea') {
node_contents = get_attribute_value(attribute); node_contents = get_attribute_value(attribute);
} else if (attribute.is_true) { }
else if (attribute.is_true) {
renderer.add_string(` ${attr_name}`); renderer.add_string(` ${attr_name}`);
} else if ( }
boolean_attributes.has(name) && else if (boolean_attributes.has(name) &&
attribute.chunks.length === 1 && attribute.chunks.length === 1 &&
attribute.chunks[0].type !== 'Text' attribute.chunks[0].type !== 'Text') {
) {
// a boolean attribute with one non-Text chunk // a boolean attribute with one non-Text chunk
renderer.add_string(' '); renderer.add_string(' ');
renderer.add_expression( renderer.add_expression(x `${( /** @type {Expression} */(attribute.chunks[0])).node} ? "${attr_name}" : ""`);
x`${(attribute.chunks[0] as Expression).node} ? "${attr_name}" : ""` }
); else if (name === 'class' && class_expression) {
} else if (name === 'class' && class_expression) {
add_class_attribute = false; add_class_attribute = false;
renderer.add_string(` ${attr_name}="`); renderer.add_string(` ${attr_name}="`);
renderer.add_expression( renderer.add_expression(x `[${get_class_attribute_value(attribute)}, ${class_expression}].join(' ').trim()`);
x`[${get_class_attribute_value(attribute)}, ${class_expression}].join(' ').trim()`
);
renderer.add_string('"'); renderer.add_string('"');
} else if (name === 'style' && style_expression) { }
else if (name === 'style' && style_expression) {
add_style_attribute = false; add_style_attribute = false;
renderer.add_expression( renderer.add_expression(x `@add_styles(@merge_ssr_styles(${get_attribute_value(attribute)}, ${style_expression}))`);
x`@add_styles(@merge_ssr_styles(${get_attribute_value(attribute)}, ${style_expression}))` }
); else if (attribute.chunks.length === 1 && attribute.chunks[0].type !== 'Text') {
} else if (attribute.chunks.length === 1 && attribute.chunks[0].type !== 'Text') { const snippet = ( /** @type {Expression} */(attribute.chunks[0])).node;
const snippet = (attribute.chunks[0] as Expression).node; renderer.add_expression(x `@add_attribute("${attr_name}", ${snippet}, ${boolean_attributes.has(name) ? 1 : 0})`);
renderer.add_expression( }
x`@add_attribute("${attr_name}", ${snippet}, ${boolean_attributes.has(name) ? 1 : 0})` else {
);
} else {
renderer.add_string(` ${attr_name}="`); renderer.add_string(` ${attr_name}="`);
renderer.add_expression( renderer.add_expression((name === 'class' ? get_class_attribute_value : get_attribute_value)(attribute));
(name === 'class' ? get_class_attribute_value : get_attribute_value)(attribute)
);
renderer.add_string('"'); renderer.add_string('"');
} }
}); });
@ -148,61 +124,53 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
renderer.add_expression(x `@add_styles(${style_expression})`); renderer.add_expression(x `@add_styles(${style_expression})`);
} }
} }
node.bindings.forEach((binding) => {
node.bindings.forEach((binding: Binding) => {
const { name, expression } = binding; const { name, expression } = binding;
if (binding.is_readonly) { if (binding.is_readonly) {
return; return;
} }
if (name === 'group') { if (name === 'group') {
const value_attribute = node.attributes.find(({ name }) => name === 'value'); const value_attribute = node.attributes.find(({ name }) => name === 'value');
if (value_attribute) { if (value_attribute) {
const value = get_attribute_expression(value_attribute); const value = get_attribute_expression(value_attribute);
const type = node.get_static_attribute_value('type'); const type = node.get_static_attribute_value('type');
const bound = expression.node; const bound = expression.node;
const condition = const condition = type === 'checkbox' ? x `~${bound}.indexOf(${value})` : x `${value} === ${bound}`;
type === 'checkbox' ? x`~${bound}.indexOf(${value})` : x`${value} === ${bound}`;
renderer.add_expression(x `${condition} ? @add_attribute("checked", true, 1) : ""`); renderer.add_expression(x `${condition} ? @add_attribute("checked", true, 1) : ""`);
} }
} else if (contenteditable && is_name_contenteditable(name)) { }
else if (contenteditable && is_name_contenteditable(name)) {
node_contents = expression.node; node_contents = expression.node;
// TODO where was this used? // TODO where was this used?
// value = name === 'textContent' ? x`@escape($$value)` : x`$$value`; // value = name === 'textContent' ? x`@escape($$value)` : x`$$value`;
} else if (binding.name === 'value' && node.name === 'textarea') { }
else if (binding.name === 'value' && node.name === 'textarea') {
const snippet = expression.node; const snippet = expression.node;
node_contents = x `${snippet} || ""`; node_contents = x `${snippet} || ""`;
} else if (binding.name === 'value' && node.name === 'select') { }
else if (binding.name === 'value' && node.name === 'select') {
// NOTE: do not add "value" attribute on <select /> // NOTE: do not add "value" attribute on <select />
} else { }
else {
const snippet = expression.node; const snippet = expression.node;
renderer.add_expression( renderer.add_expression(x `@add_attribute("${name}", ${snippet}, ${boolean_attributes.has(name) ? 1 : 0})`);
x`@add_attribute("${name}", ${snippet}, ${boolean_attributes.has(name) ? 1 : 0})`
);
} }
}); });
if (options.hydratable) { if (options.hydratable) {
if (node.can_optimise_to_html_string && !options.has_added_svelte_hash) { if (node.can_optimise_to_html_string && !options.has_added_svelte_hash) {
renderer.add_string(` data-svelte-h="${node.hash()}"`); renderer.add_string(` data-svelte-h="${node.hash()}"`);
options = { ...options, has_added_svelte_hash: true }; options = { ...options, has_added_svelte_hash: true };
} }
} }
renderer.add_string('>'); renderer.add_string('>');
if (node_contents !== undefined) { if (node_contents !== undefined) {
if (contenteditable) { if (contenteditable) {
renderer.push(); renderer.push();
renderer.render(children, options); renderer.render(children, options);
const result = renderer.pop(); const result = renderer.pop();
renderer.add_expression(x `($$value => $$value === void 0 ? ${result} : $$value)(${node_contents})`);
renderer.add_expression( }
x`($$value => $$value === void 0 ? ${result} : $$value)(${node_contents})` else {
);
} else {
if (node.name === 'textarea') { if (node.name === 'textarea') {
// Two or more leading newlines are required to restore the leading newline immediately after `<textarea>`. // Two or more leading newlines are required to restore the leading newline immediately after `<textarea>`.
// see https://html.spec.whatwg.org/multipage/syntax.html#element-restrictions // see https://html.spec.whatwg.org/multipage/syntax.html#element-restrictions
@ -216,9 +184,9 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
} }
renderer.add_expression(node_contents); renderer.add_expression(node_contents);
} }
add_close_tag(); add_close_tag();
} else { }
else {
if (node.name === 'pre') { if (node.name === 'pre') {
// Two or more leading newlines are required to restore the leading newline immediately after `<pre>`. // Two or more leading newlines are required to restore the leading newline immediately after `<pre>`.
// see https://html.spec.whatwg.org/multipage/grouping-content.html#the-pre-element // see https://html.spec.whatwg.org/multipage/grouping-content.html#the-pre-element
@ -228,7 +196,8 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
renderer.add_string('\n'); renderer.add_string('\n');
} }
} }
if (node.is_dynamic_element) renderer.push(); if (node.is_dynamic_element)
renderer.push();
renderer.render(children, options); renderer.render(children, options);
if (node.is_dynamic_element) { if (node.is_dynamic_element) {
const children = renderer.pop(); const children = renderer.pop();
@ -236,9 +205,8 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
} }
add_close_tag(); add_close_tag();
} }
if (node.is_dynamic_element) { if (node.is_dynamic_element) {
let content: Node = renderer.pop(); let content = renderer.pop();
if (options.dev && node.children.length > 0) if (options.dev && node.children.length > 0)
content = x `(() => { @validate_void_dynamic_element(#tag); return ${content}; })()`; content = x `(() => { @validate_void_dynamic_element(#tag); return ${content}; })()`;
renderer.add_expression(x `((#tag) => { renderer.add_expression(x `((#tag) => {
@ -246,10 +214,9 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
return #tag ? ${content} : ''; return #tag ? ${content} : '';
})(${node.tag_expr.node})`); })(${node.tag_expr.node})`);
} }
function add_close_tag() { function add_close_tag() {
if (node.tag_expr.node.type === 'Literal') { if (node.tag_expr.node.type === 'Literal') {
if (!is_void(node.tag_expr.node.value as string)) { if (!is_void(/** @type {string} */ (node.tag_expr.node.value))) {
renderer.add_string('</'); renderer.add_string('</');
add_tag_name(); add_tag_name();
renderer.add_string('>'); renderer.add_string('>');
@ -258,12 +225,16 @@ export default function (node: Element, renderer: Renderer, options: RenderOptio
} }
renderer.add_expression(x `@is_void(#tag) ? '' : \`</\${#tag}>\``); renderer.add_expression(x `@is_void(#tag) ? '' : \`</\${#tag}>\``);
} }
function add_tag_name() { function add_tag_name() {
if (node.tag_expr.node.type === 'Literal') { if (node.tag_expr.node.type === 'Literal') {
renderer.add_string(node.tag_expr.node.value as string); renderer.add_string(/** @type {string} */ (node.tag_expr.node.value));
} else {
renderer.add_expression(node.tag_expr.node as ESExpression);
} }
else {
renderer.add_expression(/** @type {ESExpression} */ (node.tag_expr.node));
} }
} }
}

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