1 files changed, 120 insertions, 0 deletions
diff --git a/3-ruby-tags/entry.rb b/3-ruby-tags/entry.rb
new file mode 100644
index 0000000..4ad7b7f
--- /dev/null
+++ b/3-ruby-tags/entry.rb
@@ -0,0 +1,120 @@
+eval $s=<<'TRICK'
+require "cgi"
+require "js"
+require "prism"
+
+@s = String.new
+def p(s) = @s << s
+
+def tag(t, s, c) = "<#{t} class=#{c}>#{s}</#{t}>"
+def span(s, c) = tag("span", s, c)
+
+def ruby(t)
+  s = CGI.escape_html(t.value)
+  if r = rt(t)
+    tag("ruby", s + tag("rp", "(", "") + tag("rt", r, "") + tag("rp", ")", ""), t.type)
+  else
+    span(s, t.type)
+  end
+end
+
+def kana(s)
+  s
+    &.scan(/.{2}/)
+    &.map{|c| (0x30A0 + c.to_i).chr(Encoding::UTF_8)}
+    &.*("")
+end
+
+def rt(t)
+  r = {
+    :"&&" => "1136",
+    :"=" => "04199275",
+    :"||" => "623147",
+    :$s => "41750825",
+    :* => "111775",
+    :+ => "557325",
+    :- => "62044225",
+    :<< => "02588341",
+    :@s => "0235400825",
+    LESS: "2371064274",
+    USTAR: "",
+    c: "2392",
+    cgi: "239224920204",
+    chr: "336792",
+    def: "3953",
+    document: "411369658340",
+    downcase: "320683179225",
+    each: "043533",
+    else: "087525",
+    encoding: "0883199239038316",
+    end: "088341",
+    end_column: "088341117364",
+    end_line: "088341730483",
+    end_with?: "088341060326",
+    escape_html: "082517925508043338039208640875",
+    getelementbyid: "183540087665834048040204390392",
+    global: "1677924875",
+    if: "0453",
+    innerhtml: "0483429208043338039208640875",
+    js: "2407920825",
+    kana: "1142",
+    l: "0875",
+    lex: "76351525",
+    location: "771792237183",
+    map: "623555",
+    new: "436992",
+    nil: "4375",
+    p: "5292",
+    prism: "55742664",
+    r: "029275",
+    require: "7415790402",
+    rp: "0292755292",
+    rt: "029275380392",
+    ruby: "7551",
+    s: "0825",
+    scan: "25136783",
+    span: "254983",
+    star: "111775",
+    start_column: "25319240117364",
+    start_line: "25319240730483",
+    string: "2540748316",
+    t: "380392",
+    tag: "3116",
+    to_i: "4005920204",
+    type: "310455",
+    utf_8: "70923803920853080440",
+    value: "48746992",
+    x: "08351525",
+    y: "7904",
+  }
+  kana(
+    r[:"#{t.type}"] ||
+    r[s = :"#{t.value.downcase}"] ||
+    s.end_with?(":") && r[:"#{s[..-2]}"] ||
+    nil
+  )
+end
+
+y = 1
+x = 0
+Prism.lex($s).value[..-2].each {|t, *|
+  l = t.location
+  r = l.start_line
+  if y < r
+    p "\n" * (r - y)
+    x = 0
+  end
+  c = l.start_column
+  if x < c
+    p " " * (c - x)
+  end
+  p ruby(t)
+  y = l.end_line
+  x = l.end_column
+}
+
+JS.global[:document].getElementById("src")[:innerHTML] =
+  span("eval $s=<<'TRICK'\n", "COMMENT") +
+  @s +
+  span("TRICK\n", "COMMENT")
+TRICK