public ExecutionContext createEvalExecutionContext(JSProgram eval, boolean direct) {
// 10.4.2 (with caller)
ExecutionContext context = null;
Object evalThisBinding = null;
LexicalEnvironment evalLexEnv = null;
LexicalEnvironment evalVarEnv = null;
if (!direct) {
evalThisBinding = getGlobalObject();
evalLexEnv = LexicalEnvironment.newGlobalEnvironment(getGlobalObject());
evalVarEnv = LexicalEnvironment.newGlobalEnvironment(getGlobalObject());
} else {
evalThisBinding = this.thisBinding;
evalLexEnv = this.getLexicalEnvironment();
evalVarEnv = this.getVariableEnvironment();
}
if (eval.isStrict()) {
LexicalEnvironment strictVarEnv =
LexicalEnvironment.newDeclarativeEnvironment(this.getLexicalEnvironment());
evalLexEnv = strictVarEnv;
evalVarEnv = strictVarEnv;
}
context = new ExecutionContext(this, evalLexEnv, evalVarEnv, evalThisBinding, eval.isStrict());
context.performFunctionDeclarationBindings(eval, true);
context.performVariableDeclarationBindings(eval, true);
context.fileName = eval.getFileName();
return context;
}
public Completion execute(JSProgram program) {
try {
ThreadContextManager.pushContext(this);
setStrict(program.isStrict());
this.fileName = program.getFileName();
performDeclarationBindingInstantiation(program);
try {
return program.execute(this);
} catch (ThrowException e) {
throw e;
} catch (Throwable t) {
throw new ThrowException(this, t);
}
} finally {
ThreadContextManager.popContext();
}
}
public Object eval(JSProgram eval, boolean direct) {
try {
ExecutionContext evalContext = createEvalExecutionContext(eval, direct);
ThreadContextManager.pushContext(evalContext);
Completion result = eval.execute(evalContext);
return result.value;
} finally {
ThreadContextManager.popContext();
}
}