Examples with LambdaExpr org.drools.javaparser.ast.expr.LambdaExpr used on opensource projects

Example 1 with LambdaExpr

use of org.drools.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class Consequence method executeCall.

private MethodCallExpr executeCall(BlockStmt ruleVariablesBlock, BlockStmt ruleConsequence, Collection<String> verifiedDeclUsedInRHS, MethodCallExpr onCall) {
    boolean requireDrools = rewriteRHS(ruleVariablesBlock, ruleConsequence);
    MethodCallExpr executeCall = new MethodCallExpr(onCall, EXECUTE_CALL);
    LambdaExpr executeLambda = new LambdaExpr();
    executeCall.addArgument(executeLambda);
    executeLambda.setEnclosingParameters(true);
    if (requireDrools) {
        executeLambda.addParameter(new Parameter(new UnknownType(), "drools"));
    }
    verifiedDeclUsedInRHS.stream().map(x -> new Parameter(new UnknownType(), x)).forEach(executeLambda::addParameter);
    executeLambda.setBody(ruleConsequence);
    return executeCall;
}

Example 2 with LambdaExpr

use of org.drools.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class AccumulateVisitor method buildConstraintExpression.

protected Expression buildConstraintExpression(Expression expr, Collection<String> usedDeclarations) {
    LambdaExpr lambdaExpr = new LambdaExpr();
    lambdaExpr.setEnclosingParameters(true);
    usedDeclarations.stream().map(s -> new Parameter(new UnknownType(), s)).forEach(lambdaExpr::addParameter);
    lambdaExpr.setBody(new ExpressionStmt(expr));
    return lambdaExpr;
}

Example 3 with LambdaExpr

use of org.drools.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class AccumulateVisitorFlowDSL method replaceBindingWithPatternBinding.

private void replaceBindingWithPatternBinding(MethodCallExpr bindExpression, MethodCallExpr lastPattern) {
    if (lastPattern == null) {
        return;
    }
    final Expression bindingId = lastPattern.getArgument(1);
    bindExpression.findFirst(NameExpr.class, e -> e.equals(bindingId)).ifPresent(name -> {
        LambdaExpr lambda = (LambdaExpr) bindExpression.getArgument(bindExpression.getArguments().size() - 1);
        if (lambda.getParameters().size() > 1) {
            String formalArg = fromVar(name.getNameAsString());
            for (Parameter param : lambda.getParameters()) {
                if (param.getNameAsString().equals(formalArg)) {
                    lambda.getParameters().remove(param);
                    lambda.getParameters().add(0, param);
                    break;
                }
            }
        }
        bindExpression.getArguments().remove(name);
        bindExpression.getArguments().add(0, name);
    });
}

Example 4 with LambdaExpr

use of org.drools.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class AccumulateVisitorPatternDSL method replaceBindingWithPatternBinding.

private MethodCallExpr replaceBindingWithPatternBinding(MethodCallExpr bindExpression, MethodCallExpr lastPattern) {
    final Expression bindingId = lastPattern.getArgument(0);
    bindExpression.findFirst(NameExpr.class, e -> e.equals(bindingId)).ifPresent(name -> {
        bindExpression.remove(name);
        LambdaExpr lambda = (LambdaExpr) bindExpression.getArgument(bindExpression.getArguments().size() - 1);
        if (lambda.getParameters().size() > 1) {
            String formalArg = fromVar(name.getNameAsString());
            for (Parameter param : lambda.getParameters()) {
                if (param.getNameAsString().equals(formalArg)) {
                    lambda.getParameters().remove(param);
                    lambda.getParameters().add(0, param);
                    break;
                }
            }
        }
    });
    return (MethodCallExpr) bindExpression;
}

Example 5 with LambdaExpr

use of org.drools.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class DrlxParseUtil method generateLambdaWithoutParameters.

public static Expression generateLambdaWithoutParameters(Collection<String> usedDeclarations, Expression expr, boolean skipFirstParamAsThis) {
    if (skipFirstParamAsThis && usedDeclarations.isEmpty()) {
        return expr;
    }
    LambdaExpr lambdaExpr = new LambdaExpr();
    lambdaExpr.setEnclosingParameters(true);
    if (!skipFirstParamAsThis) {
        lambdaExpr.addParameter(new Parameter(new UnknownType(), "_this"));
    }
    usedDeclarations.stream().map(s -> new Parameter(new UnknownType(), s)).forEach(lambdaExpr::addParameter);
    lambdaExpr.setBody(new ExpressionStmt(expr));
    return lambdaExpr;
}