Examples with Script com.github.anba.es6draft.ast.Script used on opensource projects

Example 1 with Script

use of com.github.anba.es6draft.ast.Script in project es6draft by anba.

the class Compiler method compile.

private <FUNCTION extends FunctionNode> CompiledFunction compile(FUNCTION function, String className, BiConsumer<CodeGenerator, FUNCTION> compiler) {
    Script script = functionScript(function);
    if (!isEnabled(Compiler.Option.NoByteCodeSizeValidation)) {
        CodeSize.analyze(function);
    }
    long startCompile = 0;
    if (MEASURE_COMPILE_TIME) {
        startCompile = System.nanoTime();
    }
    Code code = new Code(Modifier.PUBLIC | Modifier.FINAL, className, ClassSignature.NONE, Types.CompiledFunction, Collections.<Type>emptyList(), NodeSourceInfo.create(function, isEnabled(Option.SourceMap)));
    CodeGenerator codegen = new CodeGenerator(context, code, script);
    try {
        compiler.accept(codegen, function);
    } catch (RuntimeException e) {
        throw handleAsmError(e);
    }
    if (MEASURE_COMPILE_TIME) {
        long time = System.nanoTime() - startCompile;
        STATISTICS.compileTime.add(time);
        STATISTICS.compileTimeFunction.add(time);
    }
    long startLoad = 0;
    if (MEASURE_LOAD_TIME) {
        startLoad = System.nanoTime();
    }
    CompiledFunction compiledFunction;
    try {
        if (useAnonymousLoader(code)) {
            compiledFunction = defineAndLoad(script, code, AnonymousCodeLoader.FUNCTION);
        } else {
            compiledFunction = defineAndLoad(script, code, className);
        }
    } catch (RuntimeException e) {
        throw handleAsmError(e);
    }
    if (MEASURE_LOAD_TIME) {
        long time = System.nanoTime() - startLoad;
        STATISTICS.loadTime.add(time);
        STATISTICS.loadTimeFunction.add(time);
    }
    return compiledFunction;
}

Example 2 with Script

use of com.github.anba.es6draft.ast.Script in project es6draft by anba.

the class ScriptCodeGenerator method generateGlobalScriptEvaluation.

/**
     * 15.1.7 Runtime Semantics: ScriptEvaluation
     * 
     * @param node
     *            the script node
     * @param mv
     *            the instruction visitor
     */
private void generateGlobalScriptEvaluation(Script node, InstructionVisitor mv) {
    Variable<ExecutionContext> callerContext = mv.getParameter(EXECUTION_CONTEXT, ExecutionContext.class);
    Variable<com.github.anba.es6draft.Script> script = mv.getParameter(SCRIPT, com.github.anba.es6draft.Script.class);
    Variable<Realm> realm = mv.newVariable("realm", Realm.class);
    Variable<ExecutionContext> scriptCxt = mv.newVariable("scriptCxt", ExecutionContext.class);
    Variable<ExecutionContext> oldScriptContext = mv.newVariable("oldScriptContext", ExecutionContext.class);
    Variable<Object> result = mv.newVariable("result", Object.class);
    Variable<Throwable> throwable = mv.newVariable("throwable", Throwable.class);
    getRealm(callerContext, realm, mv);
    /* steps 1-2 (not applicable) */
    /* steps 3-7 */
    newScriptExecutionContext(realm, script, scriptCxt, mv);
    /* step 8 */
    getScriptContext(realm, oldScriptContext, mv);
    /* step 9 */
    setScriptContext(realm, scriptCxt, mv);
    TryCatchLabel startFinally = new TryCatchLabel(), endFinally = new TryCatchLabel();
    TryCatchLabel handlerFinally = new TryCatchLabel();
    mv.mark(startFinally);
    {
        /* step 10 */
        mv.load(scriptCxt);
        mv.invoke(codegen.methodDesc(node, ScriptName.Init));
        /* steps 11-12 */
        mv.load(scriptCxt);
        mv.invoke(codegen.methodDesc(node, ScriptName.Code));
        mv.store(result);
        /* steps 13-15  */
        setScriptContext(realm, oldScriptContext, mv);
        /* step 16 */
        mv.load(result);
        mv._return();
    }
    mv.mark(endFinally);
    // Exception: Restore script context and then rethrow exception
    mv.finallyHandler(handlerFinally);
    mv.store(throwable);
    /* steps 13-15 */
    setScriptContext(realm, oldScriptContext, mv);
    mv.load(throwable);
    mv.athrow();
    mv.tryFinally(startFinally, endFinally, handlerFinally);
}

Example 3 with Script

use of com.github.anba.es6draft.ast.Script in project es6draft by anba.

the class Compiler method compile.

private CompiledFunction compile(FunctionNode function, String className) {
    Script script = functionScript(function);
    if (!isEnabled(Compiler.Option.NoByteCodeSizeValidation)) {
        try {
            CodeSize.analyze(function);
        } catch (CodeSizeException e) {
            throw new CompilationException(e.getMessage());
        }
    }
    Code code = new Code(Modifier.PUBLIC | Modifier.FINAL, className, ClassSignature.NONE, Types.CompiledFunction, Collections.<Type>emptyList(), NodeSourceInfo.create(function, compilerOptions));
    CodeGenerator codegen = new CodeGenerator(code, script, executor, compilerOptions);
    codegen.compileFunction(function);
    return defineAndLoad(code, className);
}

Example 4 with Script

use of com.github.anba.es6draft.ast.Script in project es6draft by anba.

the class ScriptCodeGenerator method generateGlobalScriptEvaluation.

/**
 * 15.1.7 Runtime Semantics: ScriptEvaluation
 *
 * @param node
 *            the script node
 * @param scriptInit
 *            the script declaration instantiation method
 * @param scriptBody
 *            the script body method
 * @param mv
 *            the instruction visitor
 */
private static void generateGlobalScriptEvaluation(Script node, MethodName scriptInit, MethodName scriptBody, ScriptEvalVisitor mv) {
    Variable<ExecutionContext> callerContext = mv.getCallerContext();
    Variable<com.github.anba.es6draft.Script> script = mv.getScript();
    Variable<Realm> realm = mv.newVariable("realm", Realm.class);
    Variable<ExecutionContext> scriptCxt = mv.newVariable("scriptCxt", ExecutionContext.class);
    Variable<ExecutionContext> oldScriptContext = mv.newVariable("oldScriptContext", ExecutionContext.class);
    Variable<Object> result = mv.newVariable("result", Object.class);
    Variable<Throwable> throwable = mv.newVariable("throwable", Throwable.class);
    getRealm(callerContext, realm, mv);
    /* steps 1-2 (not applicable) */
    /* steps 3-7 */
    newScriptExecutionContext(realm, script, scriptCxt, mv);
    /* step 8 */
    getScriptContext(realm, oldScriptContext, mv);
    /* step 9 */
    setScriptContext(realm, scriptCxt, mv);
    TryCatchLabel startFinally = new TryCatchLabel(), endFinally = new TryCatchLabel();
    TryCatchLabel handlerFinally = new TryCatchLabel();
    mv.mark(startFinally);
    {
        /* step 10 */
        mv.load(scriptCxt);
        mv.invoke(scriptInit);
        /* steps 11-12 */
        mv.load(scriptCxt);
        mv.invoke(scriptBody);
        mv.store(result);
        /* steps 13-15  */
        setScriptContext(realm, oldScriptContext, mv);
        /* step 16 */
        mv.load(result);
        mv._return();
    }
    mv.mark(endFinally);
    // Exception: Restore script context and then rethrow exception
    mv.finallyHandler(handlerFinally);
    mv.store(throwable);
    /* steps 13-15 */
    setScriptContext(realm, oldScriptContext, mv);
    mv.load(throwable);
    mv.athrow();
    mv.tryFinally(startFinally, endFinally, handlerFinally);
}