Port vscode-xquery to vscode-xml

I'll be consolidating the two extensions into one.

languages/xquery/xquery.json

@@ -0,0 +1,11 @@
+{
+    "comments": {
+        "lineComment": "//",
+        "blockComment": ["/*", "*/"]
+    },
+    "brackets": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"]
+    ]
+}

package.json

@@ -27,6 +27,7 @@
 	},
 	"categories": [
 		"Languages",
+        "Linters",
         "Other"
 	],
 	"main": "./src/Extension",
@@ -75,10 +76,26 @@
 				"key": "ctrl+shift+alt+x",
 				"command": "xmlTools.evaluateXPath"
 			}
-		]
+		],
+        "languages": [
+            {
+                "id": "xquery",
+                "aliases": ["XQuery", "xquery"],
+                "extensions": [".xq",".xql",".xqm",".xqy",".xquery"],
+                "configuration": "./languages/xquery/xquery.json"
+            }
+        ],
+        "grammars": [
+            {
+                "language": "xquery",
+                "scopeName": "source.xquery",
+                "path": "./languages/xquery/xquery.tmLanguage"
+            }
+        ]
 	},
 	"activationEvents": [
-		"onLanguage:xml"
+		"onLanguage:xml",
+        "onLanguage:xquery"
 	],
 	"devDependencies": {
 		"vscode": "^0.10.7",
@@ -86,7 +103,8 @@
 	},
 	"dependencies": {
 		"xmldom": "DotJoshJohnson/xmldom#2794915",
-		"xpath": "^0.0.9"
+		"xpath": "^0.0.9",
+        "xqlint": "^0.2.9"
 	},
     "scripts": {
         "vscode:prepublish": "tsc"

src/Extension.ts

@@ -3,11 +3,14 @@
 import * as vsc from 'vscode';
 import { TextEditorCommands } from './Commands';
 import { XmlFormattingEditProvider } from './providers/Formatting';
+import { XQueryLintingFeatureProvider } from './providers/Linting';
+import { XQueryCompletionItemProvider } from './providers/Completion';
 
 export var GlobalState: vsc.Memento;
 export var WorkspaceState: vsc.Memento;
 
 const LANG_XML: string = 'xml';
+const LANG_XQUERY: string = 'xquery;'
 const MEM_QUERY_HISTORY: string = 'xpathQueryHistory';
 
 export function activate(ctx: vsc.ExtensionContext) {
@@ -25,7 +28,15 @@ export function activate(ctx: vsc.ExtensionContext) {
 	// register language feature providers
     ctx.subscriptions.push(
         vsc.languages.registerDocumentFormattingEditProvider(LANG_XML, new XmlFormattingEditProvider()),
-        vsc.languages.registerDocumentRangeFormattingEditProvider(LANG_XML, new XmlFormattingEditProvider())
+        vsc.languages.registerDocumentRangeFormattingEditProvider(LANG_XML, new XmlFormattingEditProvider()),
+        
+        vsc.languages.registerCompletionItemProvider(LANG_XQUERY, new XQueryCompletionItemProvider(), ':', '$')
+    );
+    
+    // listen to editor events (for linting)
+    ctx.subscriptions.push(
+        vsc.window.onDidChangeActiveTextEditor(_handleChangeActiveTextEditor),
+        vsc.window.onDidChangeTextEditorSelection(_handleChangeTextEditorSelection)
     );
 }
 
@@ -36,3 +47,19 @@ export function deactivate() {
     history.splice(0);
     memento.update(MEM_QUERY_HISTORY, history);
 }
+
+function _handleContextChange(editor: vsc.TextEditor): void {
+    switch (editor.document.languageId) {
+        case 'xquery':
+            XQueryLintingFeatureProvider.provideXQueryDiagnostics(editor);
+            break;
+    }
+}
+
+function _handleChangeActiveTextEditor(editor: vsc.TextEditor): void {
+    _handleContextChange(editor);
+}
+
+function _handleChangeTextEditorSelection(e: vsc.TextEditorSelectionChangeEvent): void {
+    _handleContextChange(e.textEditor);
+}

src/providers/Completion.ts

@@ -0,0 +1,46 @@
+'use strict';
+
+import * as vsc from 'vscode';
+import { XQueryCompleter, XQueryCompletionItem } from '../services/XQueryCompleter';
+
+export class XQueryCompletionItemProvider implements vsc.CompletionItemProvider {
+    provideCompletionItems(document: vsc.TextDocument, position: vsc.Position): vsc.CompletionItem[] {
+        let items: vsc.CompletionItem[] = new Array<vsc.CompletionItem>();
+        
+        let completer: XQueryCompleter = new XQueryCompleter(document.getText());
+        let completions: XQueryCompletionItem[] = completer.getCompletions(position.line, position.character);
+        
+        completions.forEach((completion: XQueryCompletionItem) => {
+            let item: vsc.CompletionItem = new vsc.CompletionItem(completion.name);
+            item.insertText = completion.value;
+            
+            switch (completion.meta) {
+                // functions (always qualified with a colon)
+                case 'function':
+                    item.kind = vsc.CompletionItemKind.Function;
+                    
+                    let funcStart = (completion.value.indexOf(':') + 1);
+                    let funcEnd = completion.value.indexOf('(');
+                    
+                    item.insertText = completion.value.substring(funcStart, funcEnd);
+                    break;
+                    
+                // variables and parameters (always qualified with a dollar sign)
+                case 'Let binding':
+				case 'Local variable':
+				case 'Window variable':
+				case 'Function parameter':
+                    item.kind = vsc.CompletionItemKind.Variable;
+                    item.insertText = completion.value.substring(1);
+                    break;
+                    
+                // everything else
+                default: item.kind = vsc.CompletionItemKind.Text;
+            }
+            
+            items.push(item);
+        });
+        
+        return items;
+    }
+}

src/providers/Linting.ts

@@ -0,0 +1,34 @@
+'use strict';
+
+import * as vsc from 'vscode';
+import { XQueryLinter, XQueryDiagnostic } from '../services/XQueryLinter';
+
+export class XQueryLintingFeatureProvider {
+    private static _coreDiagnostics: vsc.DiagnosticCollection;
+    
+    static get coreDiagnostics(): vsc.DiagnosticCollection {
+        if (!XQueryLintingFeatureProvider._coreDiagnostics) {
+            XQueryLintingFeatureProvider._coreDiagnostics = vsc.languages.createDiagnosticCollection('XQueryDiagnostics');
+        }
+        
+        return XQueryLintingFeatureProvider._coreDiagnostics;
+    }
+    
+    static provideXQueryDiagnostics(editor: vsc.TextEditor): void {
+        let diagnostics: vsc.Diagnostic[] = new Array<vsc.Diagnostic>();
+        let xqDiagnostics: XQueryDiagnostic[] = XQueryLinter.lint(editor.document.getText());
+        
+        xqDiagnostics.forEach((xqd: XQueryDiagnostic) => {
+            let vSeverity: vsc.DiagnosticSeverity = (xqd.severity == 1) ? vsc.DiagnosticSeverity.Warning : vsc.DiagnosticSeverity.Error;
+            
+            let startPos: vsc.Position = new vsc.Position(xqd.startLine, xqd.startColumn);
+            let endPos: vsc.Position = new vsc.Position(xqd.endLine, xqd.endColumn);
+            let range: vsc.Range = new vsc.Range(startPos, endPos);
+            let diagnostic: vsc.Diagnostic = new vsc.Diagnostic(range, xqd.message, vSeverity);
+            
+            diagnostics.push(diagnostic);
+        });
+        
+        XQueryLintingFeatureProvider.coreDiagnostics.set(editor.document.uri, diagnostics);
+    }
+}

src/services/XQueryCompleter.ts

@@ -0,0 +1,43 @@
+'use strict';
+
+let XQLint = require('xqlint').XQLint;
+
+export class XQueryCompleter {
+    constructor(script: string) {
+        this.script = script;
+    }
+    
+    private _script: string;
+    private _linter: any;
+    
+    get script(): string {
+        return this._script;
+    }
+    
+    set script(value: string) {
+        this._script = value;
+        this._linter = new XQLint(this._script);
+    }
+    
+    getCompletions(line: number, column: number): XQueryCompletionItem[] {
+        let items: XQueryCompletionItem[] = new Array<XQueryCompletionItem>();
+        
+        this._linter.getCompletions({line: line, col: column}).forEach((completion: any) => {
+            items.push(new XQueryCompletionItem(completion.name, completion.value, completion.meta));
+        });
+        
+        return items;
+    }
+}
+
+export class XQueryCompletionItem {
+    constructor(name: string, value: string, meta: string) {
+        this.name = name;
+        this.value = value;
+        this.meta = meta;
+    }
+    
+    name: string;
+    value: string;
+    meta: string;
+}

src/services/XQueryLinter.ts

@@ -0,0 +1,41 @@
+'use strict';
+
+let XQLint = require('xqlint').XQLint;
+
+export class XQueryLinter {
+    static SEVERITY_WARNING: number = 1;
+    static SEVERITY_ERROR: number = 2;
+    
+    static lint(text: string): XQueryDiagnostic[] {
+        let linter = new XQLint(text);
+        let diagnostics: XQueryDiagnostic[] = new Array<XQueryDiagnostic>();
+        
+        linter.getErrors().forEach((error: any) => {
+            diagnostics.push(new XQueryDiagnostic(XQueryLinter.SEVERITY_ERROR, error.message, error.pos.sl, error.pos.sc, error.pos.el, error.pos.ec));
+        });
+        
+        linter.getWarnings().forEach((warning: any) => {
+            diagnostics.push(new XQueryDiagnostic(XQueryLinter.SEVERITY_WARNING, warning.message, warning.pos.sl, warning.pos.sc, warning.pos.el, warning.pos.ec));
+        });
+        
+        return diagnostics;
+    }
+}
+
+export class XQueryDiagnostic {
+    constructor(severity: number, message: string, startLine: number, startColumn: number, endLine: number, endColumn: number) {
+        this.severity = severity;
+        this.message = message;
+        this.startLine = startLine;
+        this.startColumn = startColumn;
+        this.endLine = endLine;
+        this.endColumn = endColumn;
+    }
+    
+    severity: number;
+    message: string;
+    startLine: number;
+    startColumn: number;
+    endLine: number;
+    endColumn: number;
+}