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sample.cpp
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sample.cpp
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//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------
#include "ChakraCore.h"
#include <stdlib.h>
#include <stdio.h>
#include <string>
#include <cstring>
#define FAIL_CHECK(cmd) \
do \
{ \
JsErrorCode errCode = cmd; \
if (errCode != JsNoError) \
{ \
printf("Error %d at '%s'\n", \
errCode, #cmd); \
return 1; \
} \
} while(0)
using namespace std;
int main()
{
JsRuntimeHandle runtime;
JsContextRef context;
JsValueRef result;
unsigned currentSourceContext = 0;
// Your script; try replace hello-world with something else
const char* script = "(()=>{return \'Hello World!\';})()";
// Create a runtime.
FAIL_CHECK(JsCreateRuntime(JsRuntimeAttributeNone, nullptr, &runtime));
// Create an execution context.
FAIL_CHECK(JsCreateContext(runtime, &context));
// Now set the current execution context.
FAIL_CHECK(JsSetCurrentContext(context));
JsValueRef fname;
FAIL_CHECK(JsCreateString("sample", strlen("sample"), &fname));
JsValueRef scriptSource;
FAIL_CHECK(JsCreateExternalArrayBuffer((void*)script, (unsigned int)strlen(script),
nullptr, nullptr, &scriptSource));
// Run the script.
FAIL_CHECK(JsRun(scriptSource, currentSourceContext++, fname, JsParseScriptAttributeNone, &result));
// Convert your script result to String in JavaScript; redundant if your script returns a String
JsValueRef resultJSString;
FAIL_CHECK(JsConvertValueToString(result, &resultJSString));
// Project script result back to C++.
char *resultSTR = nullptr;
size_t stringLength;
FAIL_CHECK(JsCopyString(resultJSString, nullptr, 0, &stringLength));
resultSTR = (char*) malloc(stringLength + 1);
FAIL_CHECK(JsCopyString(resultJSString, resultSTR, stringLength + 1, nullptr));
resultSTR[stringLength] = 0;
printf("Result -> %s \n", resultSTR);
free(resultSTR);
// Dispose runtime
FAIL_CHECK(JsSetCurrentContext(JS_INVALID_REFERENCE));
FAIL_CHECK(JsDisposeRuntime(runtime));
return 0;
}