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Make assertion that enables throwing only strings with 'throw' statement

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Bartłomiej Przemysław Pluta
2020-03-24 09:02:22 +01:00
parent 76132498a6
commit e10af0b81e
1 changed files with 20 additions and 7 deletions
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27
app/src/main/kotlin/io/smnp/evaluation/evaluator/ThrowEvaluator.kt
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@@ -4,16 +4,29 @@ import io.smnp.dsl.ast.model.node.Node
import io.smnp.dsl.ast.model.node.ThrowNode import io.smnp.dsl.ast.model.node.ThrowNode
import io.smnp.environment.Environment import io.smnp.environment.Environment
import io.smnp.error.CustomException import io.smnp.error.CustomException
import io.smnp.error.EvaluationException
import io.smnp.evaluation.model.entity.EvaluatorOutput import io.smnp.evaluation.model.entity.EvaluatorOutput
import io.smnp.evaluation.util.ContextExceptionFactory
import io.smnp.evaluation.util.ContextExceptionFactory.contextEvaluationException
import io.smnp.evaluation.util.ContextExceptionFactory.wrapWithContext
import io.smnp.type.enumeration.DataType
class ThrowEvaluator : Evaluator() { class ThrowEvaluator : Evaluator() {
override fun supportedNodes() = listOf(ThrowNode::class) override fun supportedNodes() = listOf(ThrowNode::class)
override fun tryToEvaluate(node: Node, environment: Environment): EvaluatorOutput { override fun tryToEvaluate(node: Node, environment: Environment): EvaluatorOutput {
val evaluator = ExpressionEvaluator() val evaluator = ExpressionEvaluator()
val valueNode = (node as ThrowNode).value val valueNode = (node as ThrowNode).value
val value = evaluator.evaluate(valueNode, environment) val value = evaluator.evaluate(valueNode, environment).value
throw CustomException(value.value.value.toString()) if (value.type != DataType.STRING) {
} throw contextEvaluationException(
"Only string values can be thrown with 'throw' statement, found ${value.typeName}",
valueNode.position,
environment
)
}
throw wrapWithContext(CustomException(value.value as String), node.position, environment)
}
} }