my-compiler

Compiling for Original language.

Usage

language statement.

if ( 10 == 1 + 9 ) {
  10
}

Run.

require './lexer.rb'
require './parser.rb'

str = <<EOF
if ( 10 == 1 + 9 ) {
  10
}
EOF

# lexer
lex = MyLexer.new(str).run

# parser
p MyParser.new(lex).run # => ["if", ["==", ["lit", 10], ["+", ["lit", 1], ["lit", 9]]], ["lit", 10]]

functions

• Number literal 1
• String "foo"
• Calculation 10 + 20 * 30 / 40
  • +, -, *, /, %
• if

if ( ... ) {
  ...
}

• multi line

10 + 20
if ( 100 = 100 ) {
  "OK"
}

• else
• elseif
• for
• variable
• function
• and more... 😇

Presentation Materials

here ( Japanese ) -> 雰囲気でコンパイラを書いたら大変だった話 - Speaker Deck