| 1 | // Copyright 2014-2017 The html5ever Project Developers. See the |
| 2 | // COPYRIGHT file at the top-level directory of this distribution. |
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| 3 | // |
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| 4 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
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| 5 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
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| 6 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
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| 7 | // option. This file may not be copied, modified, or distributed |
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| 8 | // except according to those terms. |
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| 9 | |
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| 10 | //! Various sets of HTML tag names, and macros for declaring them. |
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| 11 | |
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| 12 | use crate::ExpandedName; |
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| 13 | use mac::{_tt_as_expr_hack, matches}; |
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| 14 | use markup5ever::{expanded_name, local_name, namespace_prefix, namespace_url, ns}; |
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| 15 | |
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| 16 | macro_rules! declare_tag_set_impl ( ($param:ident, $b:ident, $supr:ident, $($tag:tt)+) => ( |
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| 17 | match $param { |
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| 18 | $( expanded_name!(html $tag) => $b, )+ |
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| 19 | p => $supr(p), |
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| 20 | } |
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| 21 | )); |
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| 22 | |
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| 23 | macro_rules! declare_tag_set_body ( |
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| 24 | ($param:ident = [$supr:ident] - $($tag:tt)+) |
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| 25 | => ( declare_tag_set_impl!($param, false, $supr, $($tag)+) ); |
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| 26 | |
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| 27 | ($param:ident = [$supr:ident] + $($tag:tt)+) |
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| 28 | => ( declare_tag_set_impl!($param, true, $supr, $($tag)+) ); |
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| 29 | |
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| 30 | ($param:ident = $($tag:tt)+) |
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| 31 | => ( declare_tag_set_impl!($param, true, empty_set, $($tag)+) ); |
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| 32 | ); |
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| 33 | |
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| 34 | macro_rules! declare_tag_set ( |
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| 35 | (pub $name:ident = $($toks:tt)+) => ( |
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| 36 | pub fn $name(p: crate::ExpandedName) -> bool { |
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| 37 | declare_tag_set_body!(p = $($toks)+) |
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| 38 | } |
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| 39 | ); |
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| 40 | |
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| 41 | ($name:ident = $($toks:tt)+) => ( |
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| 42 | fn $name(p: crate::ExpandedName) -> bool { |
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| 43 | declare_tag_set_body!(p = $($toks)+) |
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| 44 | } |
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| 45 | ); |
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| 46 | ); |
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| 47 | |
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| 48 | #[inline (always)] |
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| 49 | pub fn empty_set(_: ExpandedName) -> bool { |
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| 50 | false |
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| 51 | } |
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| 52 | #[inline (always)] |
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| 53 | pub fn full_set(_: ExpandedName) -> bool { |
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| 54 | true |
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| 55 | } |
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| 56 | |
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| 57 | declare_tag_set!(pub html_default_scope = |
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| 58 | "applet" "caption" "html" "table" "td" "th" "marquee" "object" "template" ); |
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| 59 | |
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| 60 | #[inline (always)] |
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| 61 | pub fn default_scope(name: ExpandedName) -> bool { |
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| 62 | html_default_scope(name) || |
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| 63 | mathml_text_integration_point(name) || |
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| 64 | svg_html_integration_point(name) |
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| 65 | } |
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| 66 | |
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| 67 | declare_tag_set!(pub list_item_scope = [default_scope] + "ol" "ul" ); |
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| 68 | declare_tag_set!(pub button_scope = [default_scope] + "button" ); |
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| 69 | declare_tag_set!(pub table_scope = "html" "table" "template" ); |
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| 70 | declare_tag_set!(pub select_scope = [full_set] - "optgroup" "option" ); |
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| 71 | |
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| 72 | declare_tag_set!(pub table_body_context = "tbody" "tfoot" "thead" "template" "html" ); |
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| 73 | declare_tag_set!(pub table_row_context = "tr" "template" "html" ); |
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| 74 | declare_tag_set!(pub td_th = "td" "th" ); |
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| 75 | |
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| 76 | declare_tag_set!(pub cursory_implied_end = |
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| 77 | "dd" "dt" "li" "option" "optgroup" "p" "rb" "rp" "rt" "rtc" ); |
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| 78 | |
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| 79 | declare_tag_set!(pub thorough_implied_end = [cursory_implied_end] |
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| 80 | + "caption" "colgroup" "tbody" "td" "tfoot" "th" "thead" "tr" ); |
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| 81 | |
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| 82 | declare_tag_set!(pub heading_tag = "h1" "h2" "h3" "h4" "h5" "h6" ); |
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| 83 | |
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| 84 | declare_tag_set!(pub special_tag = |
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| 85 | "address" "applet" "area" "article" "aside" "base" "basefont" "bgsound" "blockquote" "body" |
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| 86 | "br" "button" "caption" "center" "col" "colgroup" "dd" "details" "dir" "div" "dl" "dt" "embed" |
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| 87 | "fieldset" "figcaption" "figure" "footer" "form" "frame" "frameset" "h1" "h2" "h3" "h4" "h5" |
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| 88 | "h6" "head" "header" "hgroup" "hr" "html" "iframe" "img" "input" "isindex" "li" "link" |
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| 89 | "listing" "main" "marquee" "menu" "meta" "nav" "noembed" "noframes" "noscript" |
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| 90 | "object" "ol" "p" "param" "plaintext" "pre" "script" "section" "select" "source" "style" |
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| 91 | "summary" "table" "tbody" "td" "template" "textarea" "tfoot" "th" "thead" "title" "tr" "track" |
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| 92 | "ul" "wbr" "xmp" ); |
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| 93 | //ยง END |
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| 94 | |
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| 95 | pub fn mathml_text_integration_point(p: ExpandedName) -> bool { |
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| 96 | matches!( |
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| 97 | p, |
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| 98 | expanded_name!(mathml "mi" ) | |
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| 99 | expanded_name!(mathml "mo" ) | |
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| 100 | expanded_name!(mathml "mn" ) | |
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| 101 | expanded_name!(mathml "ms" ) | |
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| 102 | expanded_name!(mathml "mtext" ) |
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| 103 | ) |
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| 104 | } |
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| 105 | |
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| 106 | /// https://html.spec.whatwg.org/multipage/#html-integration-point |
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| 107 | pub fn svg_html_integration_point(p: ExpandedName) -> bool { |
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| 108 | // annotation-xml are handle in another place |
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| 109 | matches!( |
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| 110 | p, |
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| 111 | expanded_name!(svg "foreignObject" ) | |
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| 112 | expanded_name!(svg "desc" ) | |
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| 113 | expanded_name!(svg "title" ) |
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| 114 | ) |
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| 115 | } |
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| 116 | |
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