100 lines
2.9 KiB
TypeScript
100 lines
2.9 KiB
TypeScript
import htmlData from '@wzlin/html-data';
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import {writeFileSync} from 'fs';
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import {join} from 'path';
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import {RUST_OUT_DIR} from './_common';
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const rsTagAttr = ({
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redundantIfEmpty,
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defaultValue,
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collapseAndTrim,
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boolean,
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}: {
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boolean: boolean;
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redundantIfEmpty: boolean;
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collapseAndTrim: boolean;
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defaultValue?: string;
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}) => `AttributeMinification { boolean: ${boolean}, redundant_if_empty: ${redundantIfEmpty}, collapse_and_trim: ${collapseAndTrim}, default_value: ${defaultValue
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== undefined ? 'None' : `Some(b"${defaultValue}")`} }`;
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let code = `
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use lazy_static::lazy_static;
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use std::collections::HashMap;
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use crate::spec::tag::ns::Namespace;
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pub struct AttributeMinification {
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pub boolean: bool,
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pub redundant_if_empty: bool,
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pub collapse_and_trim: bool,
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pub default_value: Option<&'static [u8]>,
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}
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pub enum AttrMapEntry {
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AllNamespaceElements(AttributeMinification),
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SpecificNamespaceElements(HashMap<&'static [u8], AttributeMinification>),
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}
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pub struct ByNamespace {
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// Make pub so this struct can be statically created in gen/attrs.rs.
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pub html: Option<AttrMapEntry>,
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pub svg: Option<AttrMapEntry>,
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}
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impl ByNamespace {
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#[inline(always)]
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fn get(&self, ns: Namespace) -> Option<&AttrMapEntry> {
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match ns {
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Namespace::Html => self.html.as_ref(),
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Namespace::Svg => self.svg.as_ref(),
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}
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}
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}
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pub struct AttrMap(HashMap<&'static [u8], ByNamespace>);
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impl AttrMap {
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#[inline(always)]
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pub const fn new(map: HashMap<&'static [u8], ByNamespace>) -> AttrMap {
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AttrMap(map)
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}
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#[inline(always)]
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pub fn get(&self, ns: Namespace, tag: &[u8], attr: &[u8]) -> Option<&AttributeMinification> {
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self.0.get(attr).and_then(|namespaces| namespaces.get(ns)).and_then(|entry| match entry {
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AttrMapEntry::AllNamespaceElements(min) => Some(min),
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AttrMapEntry::SpecificNamespaceElements(map) => map.get(tag),
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})
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}
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}
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`;
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code += `
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lazy_static! {
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pub static ref ATTRS: AttrMap = {
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let mut m = HashMap::<&'static [u8], ByNamespace>::new();
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${[...Object.entries(htmlData.attributes)].map(([attr_name, namespaces]) => ` m.insert(b\"${attr_name}\", ByNamespace {
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${(['html', 'svg'] as const).map(ns => ` ${ns}: ` + (() => {
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const tagsMap = namespaces[ns];
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if (!tagsMap) {
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return 'None';
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}
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const globalAttr = tagsMap['*'];
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if (globalAttr) {
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return `Some(AttrMapEntry::AllNamespaceElements(${rsTagAttr(globalAttr)}))`;
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}
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return `Some({
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let mut m = HashMap::<&'static [u8], AttributeMinification>::new();
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${Object.entries(tagsMap).map(([tagName, tagAttr]) => ` m.insert(b\"${tagName}\", ${rsTagAttr(tagAttr)});`).join('\n')}
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AttrMapEntry::SpecificNamespaceElements(m)
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})`;
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})() + ',').join('\n')}
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});
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`).join('')}
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AttrMap::new(m)
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};
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}`;
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writeFileSync(join(RUST_OUT_DIR, 'attrs.rs'), code);
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