XQuery Development in Cloud9

XQuery is a double-edged sword: On one side, it enables building extremely powerful data-intensive applications. On the other side, the entry-barrier to the technology is extremely high. This puts a tremendous amount of pressure on the development tooling. Tools need to have a deep semantic knowledge of the language while still being widely accessible. Our goal is to contribute a new XQuery development toolkit that is entirely browser-based and heavily relies on static code analysis in order to provide a rich editing experience.

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4. •Built with node.js •Engine.io •WebDav •Open source •Hosting @ c9.io •Cloud9.xq
5. XQLint XQuery Static Analyser
6. http://www.bottlecaps.de/rex/
7. XQuery ::= Module EOF Module ::= ( LibraryModule | MainModule ) LibraryModule ::= ModuleDecl Prolog ... var h = new JSONParseTree(code); var parser = new XQueryParser(code, h); parser.parse_XQuery(); h.getParseTree();
8. var code = "if(if) then then else else"; var sh = new SemanticHighlighter(code); var tokens = sh.getTokens(); console.log(tokens); [ { 'type': 'keyword', 'value': 'if' }, { 'type': 'operator', 'value': '(' }, { 'type': 'nametest', 'value': 'if' }, { 'type': 'operator', 'value': ')' }, ... ]
9. var code = fs.readFileSync("functx.xq"); var compiler = new Compiler(); var sctx = compiler.compile(code); sctx.getFunctions() [ {name:"add-attributes", params: [..], ..}, {name:"add-months", params: [..], ..}, ... ]
10. var code = "let $a := 1\nlet $b := "; var compiler = new Compiler(); var sctx = compiler.compile(code); var scope = findScope(sctx, 0, 22); scope.getVarDecls() [ {name:"a", kind:"LetBinding", pos: {..}}, ]
11. var code = "let $a := 1\nreturn 1"; var compiler = new Compiler(); var sctx = compiler.compile(code); console.log(sctx.markers); [ { pos: { sl: 0, sc: 5, el: 0, ec: 6 }, type: 'warning', level: 'warning', message: '$a: unused variable.' } ]
12. Demo
29. @ Github Cloud9 http://goo.gl/I7rn4 XQLint http://goo.gl/zuhfS ext.xquery http://goo.gl/856gS Cloud9.xq http://goo.gl/AaioQ
30. Thank You!