Examples with BLangUnaryExpr org.wso2.ballerinalang.compiler.tree.expressions.BLangUnaryExpr used on opensource projects

Example 6 with BLangUnaryExpr

use of org.wso2.ballerinalang.compiler.tree.expressions.BLangUnaryExpr in project ballerina by ballerina-lang.

the class IterableCodeDesugar method generateFilter.

/**
 * Generates statements for filter operation.
 *
 * if(!lambda(...)){
 * next;
 * }
 *
 * @param blockStmt target
 * @param operation operation instance
 */
private void generateFilter(BLangBlockStmt blockStmt, Operation operation) {
    final DiagnosticPos pos = operation.pos;
    final BLangIf ifNode = ASTBuilderUtil.createIfStmt(pos, blockStmt);
    final BLangUnaryExpr notExpr = (BLangUnaryExpr) TreeBuilder.createUnaryExpressionNode();
    notExpr.pos = pos;
    notExpr.operator = OperatorKind.NOT;
    notExpr.opSymbol = (BOperatorSymbol) symResolver.resolveUnaryOperator(pos, notExpr.operator, symTable.booleanType);
    notExpr.expr = ASTBuilderUtil.createInvocationExpr(pos, operation.lambdaSymbol, Lists.of(operation.argVar), symResolver);
    notExpr.type = symTable.booleanType;
    ifNode.expr = notExpr;
    ifNode.body = ASTBuilderUtil.createBlockStmt(pos);
    ASTBuilderUtil.createNextStmt(pos, ifNode.body);
}