105 lines
3.0 KiB
Objective-C
105 lines
3.0 KiB
Objective-C
/*
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* Copyright (C) 2014 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "ReadEvalPrintLoop.h"
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#import <JavaScriptCore/JavaScriptCore.h>
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#import <histedit.h>
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#import "JSRunLoopThread.h"
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@implementation ReadEvalPrintLoop {
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JSRunLoopThread* _jsThread;
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EditLine* _editLine;
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History* _history;
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HistEvent _histEvent;
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}
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- (id)initWithJSThread:(JSRunLoopThread *)jsThread
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{
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self = [super init];
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if (!self)
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return nil;
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_jsThread = jsThread;
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return self;
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}
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static const char* prompt(EditLine* editLine)
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{
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return ">> ";
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}
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static NSString *escapeStringForOutput(NSString *input)
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{
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return [input stringByReplacingOccurrencesOfString:@"\n" withString:@"\\n"];
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}
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- (bool)processNextInput
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{
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int count;
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char* line = (char *)el_gets(_editLine, &count);
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if (!count)
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return false;
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line[count - 1] = 0;
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NSString *inputString = [[NSString alloc] initWithCString:line encoding:NSUTF8StringEncoding];
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JSValue *result = [_jsThread didReceiveInput:inputString];
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if ([result isString]) {
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printf("=> '%s'\n\n", [escapeStringForOutput([result toString]) UTF8String]);
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} else {
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printf("=> %s\n\n", [[result toString] UTF8String]);
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}
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if (count)
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history(_history, &_histEvent, H_ENTER, line);
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return true;
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}
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- (void)run
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{
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_editLine = el_init("node.jsc", stdin, stdout, stderr);
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el_set(_editLine, EL_PROMPT, &prompt);
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_history = history_init();
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history(_history, &_histEvent, H_SETSIZE, 1000);
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el_set(_editLine, EL_HIST, history, _history);
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while (true) {
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@autoreleasepool {
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if (![self processNextInput])
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break;
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}
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}
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history_end(_history);
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el_end(_editLine);
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}
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@end |