initial commit

.gitignore

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+*~
+*.swp
+nore

Makefile

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+
+nore: main.cc
+	$(CXX) -Wall -Wextra -g -framework JavaScriptCore -o $@ $<

main.cc

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+#include <JavaScriptCore/JavaScriptCore.h>
+
+#define UNUSED __attribute__((unused))
+
+static JSValueRef jsGlobalPrint(
+    JSContextRef        ctx,
+    JSObjectRef         jobj     UNUSED,
+    JSObjectRef         jobjThis UNUSED,
+    size_t              argLen,
+    const JSObjectRef   args[],
+    JSValueRef*         jobjExp) {
+
+    for (size_t i = 0; i < argLen; ++i) {
+        JSStringRef   jstrArg = JSValueToStringCopy(ctx, args[0], jobjExp);
+        size_t const  maxSize = JSStringGetMaximumUTF8CStringSize(jstrArg);
+        char* const   cstr    =  new char[maxSize];
+        size_t const  size    = JSStringGetUTF8CString(jstrArg, cstr, maxSize);
+        fwrite(cstr, size, 1, stdout);
+        fwrite("\n", 1, 1, stdout);
+        delete cstr;
+        JSStringRelease(jstrArg);
+    }
+
+    return JSValueMakeUndefined(ctx);
+}
+
+int main(int argc, char** argv) {
+
+    if (argc == 1) {
+        // TODO: interactive mode?
+        exit(0);
+    }
+
+    JSGlobalContextRef ctx = JSGlobalContextCreate(NULL);
+    JSObjectRef jobjGlobal = JSContextGetGlobalObject(ctx);
+
+    JSStringRef jstrPrint  = JSStringCreateWithUTF8CString("print");
+    JSObjectRef jfuncPrint = JSObjectMakeFunctionWithCallback(ctx, jstrPrint, (JSObjectCallAsFunctionCallback)jsGlobalPrint);
+    JSObjectSetProperty(ctx, jobjGlobal, jstrPrint, jfuncPrint, kJSPropertyAttributeNone, NULL);
+    JSStringRelease(jstrPrint);
+
+    JSStringRef jstrSource = JSStringCreateWithUTF8CString(argv[1]);
+    JSEvaluateScript(ctx, jstrSource, NULL, NULL, 1, NULL);
+    JSStringRelease(jstrSource);
+
+    JSGlobalContextRelease(ctx);
+    JSGarbageCollect(ctx);
+    return 0;
+}
+