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|
#!/usr/bin/env perl
use strict;
use warnings;
my (%token, @order, @keywords);
{
my $keywords;
my @const;
push @const, <<_END_;
package token
const(
_ Token = iota
_END_
for (split m/\n/, <<_END_) {
ILLEGAL
EOF
COMMENT
KEYWORD
STRING
BOOLEAN
NULL
NUMBER
IDENTIFIER
PLUS +
MINUS -
MULTIPLY *
SLASH /
REMAINDER %
AND &
OR |
EXCLUSIVE_OR ^
SHIFT_LEFT <<
SHIFT_RIGHT >>
UNSIGNED_SHIFT_RIGHT >>>
AND_NOT &^
ADD_ASSIGN +=
SUBTRACT_ASSIGN -=
MULTIPLY_ASSIGN *=
QUOTIENT_ASSIGN /=
REMAINDER_ASSIGN %=
AND_ASSIGN &=
OR_ASSIGN |=
EXCLUSIVE_OR_ASSIGN ^=
SHIFT_LEFT_ASSIGN <<=
SHIFT_RIGHT_ASSIGN >>=
UNSIGNED_SHIFT_RIGHT_ASSIGN >>>=
AND_NOT_ASSIGN &^=
LOGICAL_AND &&
LOGICAL_OR ||
INCREMENT ++
DECREMENT --
EQUAL ==
STRICT_EQUAL ===
LESS <
GREATER >
ASSIGN =
NOT !
BITWISE_NOT ~
NOT_EQUAL !=
STRICT_NOT_EQUAL !==
LESS_OR_EQUAL <=
GREATER_OR_EQUAL <=
LEFT_PARENTHESIS (
LEFT_BRACKET [
LEFT_BRACE {
COMMA ,
PERIOD .
RIGHT_PARENTHESIS )
RIGHT_BRACKET ]
RIGHT_BRACE }
SEMICOLON ;
COLON :
QUESTION_MARK ?
firstKeyword
IF
IN
DO
VAR
FOR
NEW
TRY
THIS
ELSE
CASE
VOID
WITH
WHILE
BREAK
CATCH
THROW
RETURN
TYPEOF
DELETE
SWITCH
DEFAULT
FINALLY
FUNCTION
CONTINUE
DEBUGGER
INSTANCEOF
lastKeyword
_END_
chomp;
next if m/^\s*#/;
my ($name, $symbol) = m/(\w+)\s*(\S+)?/;
if (defined $symbol) {
push @order, $name;
push @const, "$name // $symbol";
$token{$name} = $symbol;
} elsif (defined $name) {
$keywords ||= $name eq 'firstKeyword';
push @const, $name;
#$const[-1] .= " Token = iota" if 2 == @const;
if ($name =~ m/^([A-Z]+)/) {
push @keywords, $name if $keywords;
push @order, $name;
if ($token{SEMICOLON}) {
$token{$name} = lc $1;
} else {
$token{$name} = $name;
}
}
} else {
push @const, "";
}
}
push @const, ")";
print join "\n", @const, "";
}
{
print <<_END_;
var token2string = [...]string{
_END_
for my $name (@order) {
print "$name: \"$token{$name}\",\n";
}
print <<_END_;
}
_END_
print <<_END_;
var keywordTable = map[string]_keyword{
_END_
for my $name (@keywords) {
print <<_END_
"@{[ lc $name ]}": _keyword{
token: $name,
},
_END_
}
for my $name (qw/
const
class
enum
export
extends
import
super
/) {
print <<_END_
"$name": _keyword{
token: KEYWORD,
futureKeyword: true,
},
_END_
}
for my $name (qw/
implements
interface
let
package
private
protected
public
static
/) {
print <<_END_
"$name": _keyword{
token: KEYWORD,
futureKeyword: true,
strict: true,
},
_END_
}
print <<_END_;
}
_END_
}
|
