Refactor Pyflakes code coach

Author: ascholerChemeketa

runestone/activecode/js/activecode-i18n.en.js

@@ -114,5 +114,6 @@ $.i18n().load({
         msg_activecode_assertion_error_fix:
             "Check the expression to the right of assert.  The expression is False and you will need to determine why that is.  You may want to simply print out the individual parts of the expression to understand why it is evaluating to False.",
         msg_activecode_load_db: "Loading DB...",
+        msg_activecode_code_coach: "Code Coach",
     },
 });

runestone/activecode/js/activecode.js

@@ -30,6 +30,7 @@ import "codemirror/addon/hint/anyword-hint.js";
 import "codemirror/addon/edit/matchbrackets.js";
 import "./skulpt.min.js";
 import "./skulpt-stdlib.js";
+import PyflakesCoach from "./coach-python-pyflakes.js";
 // Used by Skulpt.
 import embed from "vega-embed";
 // Adapt for use outside webpack -- see https://github.com/vega/vega-embed.
@@ -65,6 +66,7 @@ export class ActiveCode extends RunestoneBase {
         this.python3 = true;
         this.origElem = orig;
         this.origText = this.origElem.textContent;
+        this.codeCoachList = [];    //list of CodeCoaches that will be used to provide feedback
         this.divid = opts.orig.id;
         this.code = $(orig).text() || "\n\n\n\n\n";
         this.language = $(orig).data("lang");
@@ -92,7 +94,7 @@ export class ActiveCode extends RunestoneBase {
         }
         this.output = null; // create pre for output
         this.graphics = null; // create div for turtle graphics
-        this.codecoach = null;
+        this.codecoach = null; // div for Code Coaches
         this.codelens = null;
         this.controlDiv = null;
         this.historyScrubber = null;
@@ -137,6 +139,12 @@ export class ActiveCode extends RunestoneBase {
             this.caption = "ActiveCode";
         }
         this.addCaption("runestone");
+
+        //Setup CodeCoaches - add based on language
+        if (this.language == "python" || this.language == "python3") {
+            this.codeCoachList.push(new PyflakesCoach());
+        }
+
         setTimeout(
             function () {
                 this.editor.refresh();
@@ -274,6 +282,7 @@ export class ActiveCode extends RunestoneBase {
         if (this.logResults) {
             this.logCurrentAnswer();
         }
+        this.runCoaches();
         this.renderFeedback();
         // The run is finished; re-enable the button.
         this.runButton.disabled = false;
@@ -722,15 +731,11 @@ export class ActiveCode extends RunestoneBase {
             }.bind(this)
         );
 
-        //Anything that wants to add output to coachdiv can do so after the h3
-        // all those elements will be cleared with each run and coach display will be
-        // reset to none. Any component that adds content after a run should set display
-        // to block to ensure visibility
         var coachDiv = document.createElement("div");
         coachDiv.classList.add("alert", "alert-warning", "codecoach");
         $(coachDiv).css("display", "none");
         let coachHead = coachDiv.appendChild(document.createElement("h3"));
-        coachHead.textContent = "Code Coach";
+        coachHead.textContent = $.i18n("msg_activecode_code_coach");
         this.outerDiv.appendChild(coachDiv);
         this.codecoach = coachDiv;
 
@@ -1222,6 +1227,35 @@ Yet another is that there is an internal error.  The internal error message is:
         }
     }
 
+    async runCoaches() {
+        //Run all available code coaches and update code coach div
+
+        //clear anything after header in codecoach div and hide it
+        $(this.codecoach).children().slice(1).remove();
+        $(this.codecoach).css("display", "none");
+
+        //get code, run coaches
+        let code = await this.buildProg(false);
+        let results = [];
+        for(let coach of this.codeCoachList) {
+            results.push(coach.check(code));
+        }
+
+        //once all coaches are done, update div
+        Promise.allSettled(results).then((promises) => {
+            for(let p of promises) {
+                if(p.status === 'fulfilled' && p.value != null) {
+                    let checkDiv = document.createElement("div");
+                    checkDiv.classList.add("python_check_results");
+                    let checkPre = checkDiv.appendChild(document.createElement("pre"));
+                    checkPre.textContent = p.value;
+                    this.codecoach.append(checkDiv);
+                    $(this.codecoach).css("display", "block");
+                }
+            }
+        });
+    }
+
     renderFeedback() {
         // The python unit test code builds the table as it is running the tests
         // In "normal" usage this is displayed immediately.
@@ -1342,9 +1376,6 @@ Yet another is that there is an internal error.  The internal error message is:
         this.saveCode = "True";
         $(this.output).text("");
 
-        //clear anything after header in codecoach
-        $(this.codecoach).children().slice(1).remove();
-
         while ($(`#${this.divid}_errinfo`).length > 0) {
             $(`#${this.divid}_errinfo`).remove();
         }
@@ -1386,9 +1417,6 @@ Yet another is that there is an internal error.  The internal error message is:
                 queue: false,
             });
         }
-        if (this.language == "python" || this.language == "python3") {
-            this.checkPythonSyntax();
-        }
         try {
             await Sk.misceval.asyncToPromise(function () {
                 return Sk.importMainWithBody("<stdin>", false, prog, true);

runestone/activecode/js/coach-python-pyflakes.js

@@ -0,0 +1,50 @@
+$.i18n().load({
+    en: {
+        msd_pyflakes_coach_line: "Line",
+    },
+});
+
+export default class PyflakesCoach {
+    async check(code) {
+        let promise = new Promise(function (resolve, reject) {
+            fetch('/ns/coach/python_check', {
+                method: 'POST',
+                body: code
+            })
+            .then((response) => {
+                return response.json();
+            })
+            .then((data) => {
+                if(data.trim() !== '') {
+                    let message = "";
+                    //clean up returned text
+                    let errorLines = data.split("\n");
+                    let codeLines = code.split("\n");
+                    for(let line of errorLines) {
+                        if(line.indexOf(".py:") != -1) {
+                            //old pyflakes returns "file:line:col error"
+                            //new pyflakes returns "file:line:col: error"
+                            //handle either
+                            const cleaner = /[^.]*.py:(\d+):(\d+):? (.*)/i;
+                            let lineParts = line.match(cleaner)
+                            
+                            message += $.i18n("msd_pyflakes_coach_line") + lineParts[1] + ": " + lineParts[3] + "\n";
+                            message += codeLines[lineParts[1] - 1] + "\n";
+                            message += " ".repeat(lineParts[2] - 1) + "^\n";
+                        } else {
+                            message += line + "\n";
+                        }
+                    }
+                    message = message.slice(0,-1);  //remove trailing newline
+                    resolve(message);
+                }
+                resolve(null);
+            })
+            .catch(err => {
+                reject("Error in Pyflakes Coach: " + err);
+            })
+        });
+        return promise;
+    }
+}
+