Merge branch 'cosmos72-autocomplete'

Author: cosmos72

.gitignore

@@ -0,0 +1,3 @@
+gophernotes
+.ipynb_checkpoints
+Untitled.ipynb

complete.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	interp "github.com/cosmos72/gomacro/fast"
+)
+
+type Completion struct {
+	class,
+	name,
+	typ string
+}
+
+type CompletionResponse struct {
+	partial     int
+	completions []Completion
+}
+
+/************************************************************
+* entry function
+************************************************************/
+func handleCompleteRequest(ir *interp.Interp, receipt msgReceipt) error {
+	// Extract the data from the request.
+	reqcontent := receipt.Msg.Content.(map[string]interface{})
+	code := reqcontent["code"].(string)
+	cursorPos := int(reqcontent["cursor_pos"].(float64))
+
+	// autocomplete the code at the cursor position
+	prefix, matches, _ := ir.CompleteWords(code, cursorPos)
+
+	// prepare the reply
+	content := make(map[string]interface{})
+
+	if len(matches) == 0 {
+		content["ename"] = "ERROR"
+		content["evalue"] = "no completions found"
+		content["traceback"] = nil
+		content["status"] = "error"
+	} else {
+		partialWord := interp.TailIdentifier(prefix)
+		content["cursor_start"] = float64(len(prefix) - len(partialWord))
+		content["cursor_end"] = float64(cursorPos)
+		content["matches"] = matches
+		content["status"] = "ok"
+	}
+
+	return receipt.Reply("complete_reply", content)
+}

kernel.go

@@ -259,6 +259,10 @@ func handleShellMsg(ir *interp.Interp, receipt msgReceipt) {
 		if err := sendKernelInfo(receipt); err != nil {
 			log.Fatal(err)
 		}
+	case "complete_request":
+		if err := handleCompleteRequest(ir, receipt); err != nil {
+			log.Fatal(err)
+		}
 	case "execute_request":
 		if err := handleExecuteRequest(ir, receipt); err != nil {
 			log.Fatal(err)