org.openl.rules.tbasic.runtime

Class TBasicVM

java.lang.Object

org.openl.rules.tbasic.runtime.TBasicVM

public class TBasicVM
extends Object

The TBasicVM class executes Algorithm logic. Besides execution of operations list, the class provides logic to support GOTO to main method and errors processing.

Constructor Summary

Constructors

Constructor and Description
TBasicVM(IOpenClass tbasicType, List<RuntimeOperation> operations, Map<String,RuntimeOperation> labels) Create an instance of TBasicVM initialized with main Algorithm method operations and labels register.

Method Summary

Modifier and Type	Method and Description
Object	run(List<RuntimeOperation> methodSteps, Map<String,RuntimeOperation> methodLabels, TBasicContextHolderEnv environment) Run sub-method of Algorithm.
Object	run(TBasicContextHolderEnv environment) Run the method of Algorithm.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TBasicVM

public TBasicVM(IOpenClass tbasicType,
                List<RuntimeOperation> operations,
                Map<String,RuntimeOperation> labels)

Create an instance of TBasicVM initialized with main Algorithm method operations and labels register.

Parameters:

operations -

labels -

Method Detail

run

public Object run(List<RuntimeOperation> methodSteps,
                  Map<String,RuntimeOperation> methodLabels,
                  TBasicContextHolderEnv environment)

Run sub-method of Algorithm. TBasicVM instance will execute the provided operations list.
The sub-method can be called only within of execution of main Algorithm method. However, the implementation doesn't put any restrictions.

Parameters:

methodSteps - The list of operations to run.

methodLabels - The labels register for sub-method.

environment - The environment for execution.

Returns:

The result of the method execution.

run

public Object run(TBasicContextHolderEnv environment)

Run the method of Algorithm. TBasicVM instance will run operations which are considered in current context.
Method also implements logic to handle all errors by user defined handling method.
Method should be called only for main Algorithm method, all sub methods should be run using run(List, Map, TBasicContextHolderEnv).

Parameters:

environment - The environment for execution.

Returns:

The result of the method execution.