refactor: move processLine inside multilineHandler class

Signed-off-by: Snehil Shah <snehilshah.989@gmail.com>

Author: Snehil-Shah

lib/node_modules/@stdlib/repl/lib/main.js

@@ -61,7 +61,6 @@ var commands = require( './commands.js' );
 var displayPrompt = require( './display_prompt.js' );
 var inputPrompt = require( './input_prompt.js' );
 var OutputStream = require( './output_stream.js' );
-var processLine = require( './process_line.js' );
 var completerFactory = require( './completer.js' );
 var MultilineHandler = require( './multiline_handler.js' );
 var PreviewCompleter = require( './completer_preview.js' );
@@ -238,14 +237,6 @@ function REPL( options ) {
 	// Define the current workspace:
 	setNonEnumerable( this, '_currentWorkspace', 'base' );
 
-	// Initialize an internal status object for multi-line mode:
-	setNonEnumerable( this, '_multiline', {} );
-	setNonEnumerable( this._multiline, 'active', false );
-	setNonEnumerable( this._multiline, 'mode', 'incomplete_expression' );
-	setNonEnumerable( this._multiline, 'line', 0 );
-	setNonEnumerable( this._multiline, 'lines', [] );
-	setNonEnumerable( this._multiline, 'buffer', '' );
-
 	// Initialize an internal flag indicating whether the REPL has been closed:
 	setNonEnumerable( this, '_closed', false );
 
@@ -354,7 +345,7 @@ function REPL( options ) {
 		completed = self._previewCompleter.beforeKeypress( data, key );
 
 		// If completion was auto-completed, don't trigger multiline keybindings to avoid double operations...
-		if ( !completed && self._multiline.active ) {
+		if ( !completed ) {
 			self._multilineHandler.beforeKeypress( data, key );
 			return;
 		}
@@ -395,7 +386,7 @@ function REPL( options ) {
 	function onLine( line ) {
 		self._SIGINT = false; // reset flag
 		if ( self._closed === false ) {
-			processLine( self, line );
+			self._multilineHandler.processLine( line );
 		}
 	}
 
@@ -524,19 +515,6 @@ setNonEnumerableReadOnly( REPL.prototype, '_prompt', function prompt() {
 	return inputPrompt( this._inputPrompt, this._count );
 });
 
-/**
-* Returns the height of the current input.
-*
-* @private
-* @name _inputHeight
-* @memberof REPL.prototype
-* @type {Function}
-* @returns {number} input rows
-*/
-setNonEnumerableReadOnly( REPL.prototype, '_inputHeight', function inputHeight() {
-	return this._multiline.lines.length;
-});
-
 /**
 * Returns the REPL viewport.
 *