org.panda_lang.framework.design.architecture.expression

Class ExpressionUtils

java.lang.Object

org.panda_lang.framework.design.architecture.expression.ExpressionUtils

public final class ExpressionUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static Expression	equalize(Expression expression, Type target) Prepare expression to be in the same type as the requested type (supports autocasts)
static Object[]	evaluate(ProcessStack stack, Object instance, Expression... expressions) Evaluates the given expressions and returns values stored in the array in the preserved order
static <T> T	evaluateConstExpression(Expression expression) Evaluates static expression (constexpr) - expression that does not relay on stack and instance

Methods inherited from class java.lang.Object

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

Method Detail

evaluateConstExpression

public static <T> T evaluateConstExpression(Expression expression)

Evaluates static expression (constexpr) - expression that does not relay on stack and instance

Type Parameters:

T - generic type of result

Parameters:

expression - the expression to evaluate

Returns:

expression value

evaluate

public static Object[] evaluate(ProcessStack stack,
                                Object instance,
                                Expression... expressions)
                         throws Exception

Evaluates the given expressions and returns values stored in the array in the preserved order

Parameters:

stack - the stack to use

instance - the instance to use

expressions - the expressions to evaluate

Returns:

array of values

Throws:

Exception - if something happen

equalize

public static Expression equalize(Expression expression,
                                  Type target)

Prepare expression to be in the same type as the requested type (supports autocasts)

Parameters:

expression - the expression to equalize

target - the target type

Returns:

expression in the given type