diff --git a/generate-parser.js b/generate-parser.js
new file mode 100644
index 0000000..bcb2e4e
--- /dev/null
+++ b/generate-parser.js
@@ -0,0 +1,87 @@
+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())
diff --git a/nodejs-spdx-expression-parse.spec b/nodejs-spdx-expression-parse.spec
index 225b435..2778bbf 100644
--- a/nodejs-spdx-expression-parse.spec
+++ b/nodejs-spdx-expression-parse.spec
@@ -1,4 +1,51 @@
+%{?nodejs_find_provides_and_requires}
+%global packagename spdx-expression-parse
+%global enable_tests 1
+Name:		nodejs-spdx-expression-parse
+Version:	1.0.2
+Release:	1
+Summary:	Parse SPDX license expressions
+License:	MIT and CC-BY
+URL:		https://github.com/kemitchell/spdx-expression-parse.js.git
+Source0:	https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-%{version}.tgz
+Source1:	https://raw.githubusercontent.com/kemitchell/spdx-expression-parse.js/v%{version}/generate-parser.js
+ExclusiveArch:	%{nodejs_arches} noarch
+BuildArch:	noarch
+BuildRequires:       	nodejs-packaging 	uglify-js 	npm(jison) npm(spdx-license-ids)
+BuildRequires:       npm(spdx-exceptions)
+%if 0%{?enable_tests}
+%endif
+Requires:            	nodejs
+%description
+Parse SPDX license expressions
+
+%prep
+%setup -q -n package
+cp -p %{SOURCE1} .
+rm parser.generated.js
+
+%build
+%nodejs_symlink_deps --check
+%__nodejs generate-parser.js | %{_bindir}/uglifyjs > parser.generated.js
+
+%install
+mkdir -p %{buildroot}%{nodejs_sitelib}/%{packagename}
+cp -pr package.json *.js \
+	%{buildroot}%{nodejs_sitelib}/%{packagename}
+%nodejs_symlink_deps
+
+%check
+%{__nodejs} -e 'require("./")'
+%if 0%{?enable_tests}
+echo "There are no tests..."
+%endif
+
+%files
+%{!?_licensedir:%global license %doc}
+%doc *.md
+%license LICENSE
+%{nodejs_sitelib}/%{packagename}
 
 %changelog
-* Fri Aug 21 2020 wangchong <wangchong56@huawei.com> - -1
+* Fri Aug 21 2020 wangchong <wangchong56@huawei.com> - 1.0.2-1
 - package init
diff --git a/nodejs-spdx-expression-parse.yaml b/nodejs-spdx-expression-parse.yaml
index 4e5a19c..7237a42 100644
--- a/nodejs-spdx-expression-parse.yaml
+++ b/nodejs-spdx-expression-parse.yaml
@@ -1,4 +1,4 @@
 version-control: github
-src_repo: sctp/lksctp-tools
+src_repo: kemitchell/spdx-expression-parse.js
 tag_prefix: ^v
 seperator: .
diff --git a/spdx-expression-parse-1.0.2.tgz b/spdx-expression-parse-1.0.2.tgz
new file mode 100644
index 0000000..32ed791
Binary files /dev/null and b/spdx-expression-parse-1.0.2.tgz differ