Examples with EvalResult org.projectnessie.cel.Program.EvalResult used on opensource projects

Example 6 with EvalResult

use of org.projectnessie.cel.Program.EvalResult in project cel-java by projectnessie.

the class CELTest method Customtypes.

@Test
void Customtypes() {
    Type exprType = Decls.newObjectType("google.api.expr.v1alpha1.Expr");
    TypeRegistry reg = newEmptyRegistry();
    Env e = newEnv(customTypeAdapter(reg), customTypeProvider(reg), container("google.api.expr.v1alpha1"), types(Expr.getDefaultInstance(), BoolT.BoolType, IntT.IntType, StringT.StringType), declarations(Decls.newVar("expr", exprType)));
    AstIssuesTuple astIss = e.compile("expr == Expr{id: 2,\n" + "\t\t\tcall_expr: Expr.Call{\n" + "\t\t\t\tfunction: \"_==_\",\n" + "\t\t\t\targs: [\n" + "\t\t\t\t\tExpr{id: 1, ident_expr: Expr.Ident{ name: \"a\" }},\n" + "\t\t\t\t\tExpr{id: 3, ident_expr: Expr.Ident{ name: \"b\" }}]\n" + "\t\t\t}}");
    assertThat(astIss.getAst().getResultType()).isEqualTo(Decls.Bool);
    Program prg = e.program(astIss.getAst());
    Object vars = mapOf("expr", Expr.newBuilder().setId(2).setCallExpr(Call.newBuilder().setFunction("_==_").addAllArgs(asList(Expr.newBuilder().setId(1).setIdentExpr(Ident.newBuilder().setName("a")).build(), Expr.newBuilder().setId(3).setIdentExpr(Ident.newBuilder().setName("b")).build()))).build());
    EvalResult out = prg.eval(vars);
    assertThat(out.getVal()).isSameAs(True);
}

Example 7 with EvalResult

use of org.projectnessie.cel.Program.EvalResult in project cel-java by projectnessie.

the class Script method execute.

@SuppressWarnings("unchecked")
public <T> T execute(Class<T> resultType, Map<String, Object> arguments) throws ScriptException {
    Objects.requireNonNull(resultType, "resultType missing");
    Objects.requireNonNull(arguments, "arguments missing");
    EvalResult evalResult = prg.eval(arguments);
    Val result = evalResult.getVal();
    if (isError(result)) {
        Err err = (Err) result;
        throw new ScriptExecutionException(err.toString(), err.getCause());
    }
    if (isUnknown(result)) {
        if (resultType == Val.class || resultType == Object.class) {
            return (T) result;
        }
        throw new ScriptExecutionException(String.format("script returned unknown %s, but expected result type is %s", result, resultType.getName()));
    }
    return result.convertToNative(resultType);
}

Example 8 with EvalResult

use of org.projectnessie.cel.Program.EvalResult in project cel-java by projectnessie.

the class ConformanceServiceImpl method eval.

@Override
public void eval(EvalRequest request, io.grpc.stub.StreamObserver<EvalResponse> responseObserver) {
    try {
        Env env = newEnv(container(request.getContainer()), types(com.google.api.expr.test.v1.proto2.TestAllTypesProto.TestAllTypes.getDefaultInstance(), com.google.api.expr.test.v1.proto3.TestAllTypesProto.TestAllTypes.getDefaultInstance()));
        Program prg;
        Ast ast;
        switch(request.getExprKindCase()) {
            case PARSED_EXPR:
                ast = parsedExprToAst(request.getParsedExpr());
                break;
            case CHECKED_EXPR:
                ast = checkedExprToAst(request.getCheckedExpr());
                break;
            default:
                throw new IllegalArgumentException("No expression.");
        }
        prg = env.program(ast);
        Map<String, Object> args = new HashMap<>();
        request.getBindingsMap().forEach((name, exprValue) -> {
            Val refVal = exprValueToRefValue(env.getTypeAdapter(), exprValue);
            args.put(name, refVal);
        });
        // NOTE: the EvalState is currently discarded
        EvalResult res = prg.eval(args);
        ExprValue resultExprVal;
        if (!isError(res.getVal())) {
            resultExprVal = refValueToExprValue(res.getVal());
        } else {
            Err err = (Err) res.getVal();
            if (verboseEvalErrors) {
                System.err.printf("%n" + "Eval error (not necessarily a bug!!!):%n" + "  error: %s%n" + "%s", err, err.hasCause() ? (stacktrace(err.toRuntimeException()) + "\n") : "");
            }
            resultExprVal = ExprValue.newBuilder().setError(ErrorSet.newBuilder().addErrors(Status.newBuilder().setMessage(err.toString()))).build();
        }
        EvalResponse.Builder resp = EvalResponse.newBuilder().setResult(resultExprVal);
        responseObserver.onNext(resp.build());
        responseObserver.onCompleted();
    } catch (Exception e) {
        responseObserver.onError(io.grpc.Status.fromCode(io.grpc.Status.Code.UNKNOWN).withDescription(stacktrace(e)).asException());
    }
}

Example 9 with EvalResult

use of org.projectnessie.cel.Program.EvalResult in project cel-java by projectnessie.

the class CELTest method Abbrevs_Disambiguation.

@Test
void Abbrevs_Disambiguation() {
    Env env = newEnv(abbrevs("external.Expr"), container("google.api.expr.v1alpha1"), types(Expr.getDefaultInstance()), declarations(Decls.newVar("test", Decls.Bool), Decls.newVar("external.Expr", Decls.String)));
    // This expression will return either a string or a protobuf Expr value depending on the value
    // of the 'test' argument. The fully qualified type name is used indicate that the protobuf
    // typed 'Expr' should be used rather than the abbreviatation for 'external.Expr'.
    AstIssuesTuple astIss = env.compile("test ? dyn(Expr) : google.api.expr.v1alpha1.Expr{id: 1}");
    assertThat(astIss.hasIssues()).isFalse();
    Program prg = env.program(astIss.getAst());
    EvalResult out = prg.eval(mapOf("test", true, "external.Expr", "string expr"));
    assertThat(out.getVal().value()).isEqualTo("string expr");
    out = prg.eval(mapOf("test", false, "external.Expr", "wrong expr"));
    Expr want = Expr.newBuilder().setId(1).build();
    Expr got = out.getVal().convertToNative(Expr.class);
    assertThat(got).isEqualTo(want);
}

Example 10 with EvalResult

use of org.projectnessie.cel.Program.EvalResult in project cel-java by projectnessie.

the class CELTest method exampleWithBuiltins.

@Test
void exampleWithBuiltins() {
    // Variables used within this expression environment.
    EnvOption decls = declarations(Decls.newVar("i", Decls.String), Decls.newVar("you", Decls.String));
    Env env = newEnv(decls);
    // Compile the expression.
    AstIssuesTuple astIss = env.compile("\"Hello \" + you + \"! I'm \" + i + \".\"");
    assertThat(astIss.hasIssues()).isFalse();
    // Create the program, and evaluate it against some input.
    Program prg = env.program(astIss.getAst());
    // If the Eval() call were provided with cel.evalOptions(OptTrackState) the details response
    // (2nd return) would be non-nil.
    EvalResult out = prg.eval(mapOf("i", "CEL", "you", "world"));
    assertThat(out.getVal().equal(stringOf("Hello world! I'm CEL."))).isSameAs(True);
}