88 lines
2.6 KiB
JavaScript
88 lines
2.6 KiB
JavaScript
|
var Generator = require('jison').Generator
|
||
|
|
var options = {
|
||
|
|
type: 'slr',
|
||
|
|
moduleType: 'commonjs',
|
||
|
|
moduleName: 'spdxparse' }
|
||
|
|
|
||
|
|
var words = [ 'AND', 'OR', 'WITH' ]
|
||
|
|
|
||
|
|
var quote = function(argument) {
|
||
|
|
return '\'' + argument + '\'' }
|
||
|
|
|
||
|
|
var regexEscape = function(s) {
|
||
|
|
return s.replace(/[\^\\$*+?.()|{}\[\]\/]/g, '\\$&') }
|
||
|
|
|
||
|
|
var handleLicensesAndExceptions = function() {
|
||
|
|
var ids = require('spdx-license-ids')
|
||
|
|
var exceptions = require('spdx-exceptions')
|
||
|
|
|
||
|
|
// Sort tokens longest-first (both license ids and exception strings)
|
||
|
|
var tokens = ids.concat(exceptions)
|
||
|
|
tokens.sort(function(a, b) { return ( b.length - a.length ) })
|
||
|
|
return tokens.map(function(t) {
|
||
|
|
var type = ( (ids.indexOf(t) >= 0) ? 'LICENSE' : 'EXCEPTION' )
|
||
|
|
return [ regexEscape(t), ( 'return ' + quote(type) ) ] }) }
|
||
|
|
|
||
|
|
var grammar = {
|
||
|
|
lex: {
|
||
|
|
macros: { },
|
||
|
|
rules: [
|
||
|
|
[ '$', 'return ' + quote('EOS') ],
|
||
|
|
[ '\\s+', '/* skip whitespace */' ],
|
||
|
|
[ '\\+', 'return ' + quote('PLUS') ],
|
||
|
|
[ '\\(', 'return ' + quote('OPEN') ],
|
||
|
|
[ '\\)', 'return ' + quote('CLOSE') ],
|
||
|
|
[ ':', 'return ' + quote('COLON') ],
|
||
|
|
[ 'DocumentRef-([0-9A-Za-z-+.]+)',
|
||
|
|
'return ' + quote('DOCUMENTREF') ],
|
||
|
|
[ 'LicenseRef-([0-9A-Za-z-+.]+)',
|
||
|
|
'return ' + quote('LICENSEREF') ] ]
|
||
|
|
.concat(words.map(function(word) {
|
||
|
|
return [ word, 'return ' + quote(word) ] }))
|
||
|
|
.concat(handleLicensesAndExceptions()) },
|
||
|
|
operators: [
|
||
|
|
[ 'left', 'OR' ],
|
||
|
|
[ 'left', 'AND' ],
|
||
|
|
[ 'right', 'PLUS', 'WITH' ] ],
|
||
|
|
tokens: [
|
||
|
|
'CLOSE',
|
||
|
|
'COLON',
|
||
|
|
'EXCEPTION',
|
||
|
|
'LICENSE',
|
||
|
|
'LICENSEREF',
|
||
|
|
'OPEN',
|
||
|
|
'PLUS' ]
|
||
|
|
.concat(words)
|
||
|
|
.join(' '),
|
||
|
|
start: 'start',
|
||
|
|
bnf: {
|
||
|
|
start: [
|
||
|
|
[ 'expression EOS', 'return $$ = $1' ] ],
|
||
|
|
simpleExpression: [
|
||
|
|
[ 'LICENSE',
|
||
|
|
'$$ = { license: yytext }' ],
|
||
|
|
[ 'LICENSE PLUS',
|
||
|
|
'$$ = { license: $1, plus: true }' ],
|
||
|
|
[ 'LICENSEREF',
|
||
|
|
'$$ = { license: yytext }' ],
|
||
|
|
[ 'DOCUMENTREF COLON LICENSEREF',
|
||
|
|
'$$ = { license: yytext }' ] ],
|
||
|
|
expression: [
|
||
|
|
[ 'simpleExpression',
|
||
|
|
'$$ = $1' ],
|
||
|
|
[ 'simpleExpression WITH EXCEPTION',
|
||
|
|
[ '$$ = { exception: $3 }',
|
||
|
|
'$$.license = $1.license',
|
||
|
|
'if ($1.hasOwnProperty(\'plus\')) {',
|
||
|
|
' $$.plus = $1.plus',
|
||
|
|
'}' ]
|
||
|
|
.join('\n') ],
|
||
|
|
[ 'expression AND expression',
|
||
|
|
'$$ = { conjunction: \'and\', left: $1, right: $3 }' ],
|
||
|
|
[ 'expression OR expression',
|
||
|
|
'$$ = { conjunction: \'or\', left: $1, right: $3 }' ],
|
||
|
|
[ 'OPEN expression CLOSE',
|
||
|
|
'$$ = $2' ] ] } }
|
||
|
|
|
||
|
|
console.log(new Generator(grammar, options).generate())
|