3 files changed, 242 insertions, 0 deletions
diff --git a/src/CodeParser/CodeParser.ts b/src/CodeParser/CodeParser.ts
new file mode 100644
index 0000000..5d0d0bf
--- /dev/null
+++ b/src/CodeParser/CodeParser.ts
@@ -0,0 +1,10 @@
+import { Position, TextDocumentContentChangeEvent, TextEditor } from "vscode";
+
+export default interface ICodeParser {
+
+    /**
+     * @param  {TextEditor} activeEditor The open active Editor where the event came from
+     * @param  {TextDocumentContentChangeEvent} event Something in the document changed
+     */
+    Parse(activeEditor: TextEditor, event: TextDocumentContentChangeEvent);
+}
diff --git a/src/CodeParser/CodeParserController.ts b/src/CodeParser/CodeParserController.ts
new file mode 100644
index 0000000..6583cde
--- /dev/null
+++ b/src/CodeParser/CodeParserController.ts
@@ -0,0 +1,101 @@
+import { Disposable, Position, TextDocumentContentChangeEvent, TextEditor, TextLine, window, workspace } from "vscode";
+import CodeParser from "./CodeParser";
+import CppParser from "./CppParser";
+
+/**
+ *
+ * Checks if the event matches the specified guidelines and if a parser exists for this language
+ *
+ * @export
+ * @class CodeParserController
+ */
+export default class CodeParserController {
+    private disposable: Disposable;
+    private indicators: string[] = [];
+
+    /**
+     * Creates an instance of CodeParserController
+     *
+     * @memberOf CodeParserController
+     */
+    public constructor() {
+        const subscriptions: Disposable[] = [];
+
+        this.readConfig();
+
+        // Hand off the event to the parser if a valid parser is found
+        workspace.onDidChangeTextDocument((event) => {
+            const activeEditor: TextEditor = window.activeTextEditor;
+            if (activeEditor && event.document === activeEditor.document) {
+                this.onEvent(activeEditor, event.contentChanges[0]);
+            }
+        }, this, subscriptions);
+
+        this.disposable = Disposable.from(...subscriptions);
+    }
+
+    /**
+     *
+     * Disposes of the subscriptions
+     *
+     * @memberOf CodeParserController
+     */
+    public dispose() {
+        this.disposable.dispose();
+    }
+
+    /***************************************************************************
+                                    Implementation
+     ***************************************************************************/
+
+    private readConfig() {
+        this.indicators.push("/**"); // TODO: make this customizable
+    }
+
+    private check(activeEditor: TextEditor, event: TextDocumentContentChangeEvent): boolean {
+        if (activeEditor == null || event.text == null) {
+            return false;
+        }
+        const activeSelection: Position = activeEditor.selection.active;
+        const activeLine: TextLine = activeEditor.document.lineAt(activeSelection.line);
+        const activeChar: string = activeLine.text.charAt(activeSelection.character);
+        const startsWith: boolean = event.text.startsWith("\n") || event.text.startsWith("\r\n");
+
+        // Check if enter was pressed. Note the !
+        if (!((activeChar === "") && startsWith)) {
+            return false;
+        }
+
+        const cont: string = activeLine.text.trim();
+        let found: boolean = false;
+
+        this.indicators.forEach((element: string) => {
+            if (element === cont) { // Compare the content from the line with the valid indicators
+                found = true;
+                return;
+            }
+        });
+
+        return found;
+    }
+
+    private onEvent(activeEditor: TextEditor, event: TextDocumentContentChangeEvent) {
+        if (!this.check(activeEditor, event)) {
+            return null;
+        }
+
+        const lang: string = activeEditor.document.languageId;
+        let parser: CodeParser;
+
+        switch (lang) {
+            case "cpp":
+                parser = new CppParser();
+                break;
+            default:
+                // tslint:disable-next-line:no-console
+                console.log("No comments can be generated for language: " + lang);
+                return null;
+        }
+        parser.Parse(activeEditor, event).GenerateDoc();
+    }
+}
diff --git a/src/CodeParser/CppParser.ts b/src/CodeParser/CppParser.ts
new file mode 100644
index 0000000..e194371
--- /dev/null
+++ b/src/CodeParser/CppParser.ts
@@ -0,0 +1,131 @@
+import { Position, TextDocumentContentChangeEvent, TextEditor, TextLine } from "vscode";
+import CppGenerator from "../DocGen/CppGen";
+import { IDocGen } from "../DocGen/DocGen";
+import ICodeParser from "./CodeParser";
+
+/**
+ *
+ * Parses C++ code for methods and signatures
+ *
+ * @export
+ * @class CppParser
+ * @implements {ICodeParser}
+ */
+export default class CppParser implements ICodeParser {
+    private activeEditor: TextEditor;
+    private activeSelection: Position;
+
+    /**
+     * @inheritdoc
+     */
+    public Parse(activeEdit: TextEditor, event: TextDocumentContentChangeEvent): IDocGen {
+        this.activeEditor = activeEdit;
+        this.activeSelection = this.activeEditor.selection.active;
+
+        const activeLine: TextLine = this.activeEditor.document.lineAt(this.activeEditor.selection.active.line);
+
+        const method: string = this.getMethodText();
+
+        // Not a method
+        if (method.length === 0) {
+            return null;
+        }
+
+        const returnValue: string[] = this.getReturn(method);
+
+        const params: string[] = this.getParams(method);
+
+        const cppGenerator: IDocGen = new CppGenerator(this.activeEditor, this.activeSelection, params, returnValue);
+        return cppGenerator;
+    }
+
+    /***************************************************************************
+                                    Implementation
+     ***************************************************************************/
+
+    private getMethodText(): string {
+        let method: string = "";
+
+        let nextLine: Position = new Position(this.activeSelection.line + 1, this.activeSelection.character);
+
+        let nextLineTxt: string = this.activeEditor.document.lineAt(nextLine.line).text.trim();
+
+        // VSCode may enter a * on itself, we don't want that in our method
+        if (nextLineTxt === "*") {
+            nextLineTxt = "";
+        }
+
+        while (nextLineTxt.length === 0) { // Get first method line
+            nextLine = new Position(nextLine.line + 1, nextLine.character);
+            nextLineTxt = this.activeEditor.document.lineAt(nextLine.line).text.trim();
+        }
+
+        method += nextLineTxt;
+
+        // Get method end line
+        while (nextLineTxt.indexOf(")") === -1 &&
+                (nextLineTxt.indexOf(";") === -1 || nextLineTxt.indexOf("}") === -1)) { // Check for method end
+            nextLine = new Position(nextLine.line + 1, nextLine.character);
+            nextLineTxt = this.activeEditor.document.lineAt(nextLine.line).text.trim();
+
+            method += " " + nextLineTxt;
+        }
+
+        // Not a method but some code in the file
+        if (method.indexOf(")") === -1) {
+            return "";
+        }
+
+        return method;
+    }
+
+    private getReturn(method: string): string[] {
+        const retVals: string[] = [];
+
+        // Remove the parameters from the signature
+        const returnSignature: string = method.slice(0, method.indexOf("(")).trim();
+
+        if (returnSignature.indexOf(" ") === -1) { // Constructor or similar
+            return retVals;
+        }
+
+        const returnType: string = returnSignature.substr(0, returnSignature.lastIndexOf(" "));
+
+        switch (returnType) {
+            case "bool":
+                retVals.push("true");
+                retVals.push("false");
+                break;
+            case "void":
+                break;
+            default:
+                retVals.push(returnType);
+                break;
+        }
+
+        return retVals;
+    }
+
+    private getParams(method: string): string[] {
+        const params: string[] = [];
+
+        // Get parameters from enclosing brackets
+        const parameters: string = method.slice(method.indexOf("(")) // Get opening bracket
+                                         .slice(1, method.indexOf(")")) // Remove opening bracket
+                                         .split(")")[0]; // Get closing bracket
+
+        if (parameters.length === 0) { // No parameters
+            return params;
+        }
+
+        let paramArr: string[] = parameters.split(",");
+        paramArr = paramArr.map((item: string) => {
+            // Remove any special C++ characters
+            const clean: string = item.trim().replace(/[&*\[\]]/g, "");
+
+            return clean.split(" ").pop();
+        });
+
+        return paramArr;
+    }
+}