Examples with IdExpr jkind.lustre.IdExpr used on opensource projects

Example 36 with IdExpr

use of jkind.lustre.IdExpr in project AGREE by loonwerks.

the class LustreAstBuilder method getRealizabilityLustreProgram.

// private static AgreeProgram translate(AgreeProgram program){
// return AgreeInlineLatchedConnections.translate(program);
// }
public static Program getRealizabilityLustreProgram(AgreeProgram agreeProgram) {
    List<TypeDef> types = AgreeUtils.getLustreTypes(agreeProgram);
    List<Expr> assertions = new ArrayList<>();
    List<VarDecl> locals = new ArrayList<>();
    List<VarDecl> inputs = new ArrayList<>();
    List<Equation> equations = new ArrayList<>();
    List<String> properties = new ArrayList<>();
    AgreeNode topNode = agreeProgram.topNode;
    for (AgreeStatement assumption : topNode.assumptions) {
        assertions.add(assumption.expr);
    }
    int i = 0;
    for (AgreeStatement guarantee : topNode.guarantees) {
        String guarName = guarSuffix + i++;
        locals.add(new AgreeVar(guarName, NamedType.BOOL, guarantee.reference, topNode.compInst, null));
        equations.add(new Equation(new IdExpr(guarName), guarantee.expr));
        properties.add(guarName);
    }
    List<String> inputStrs = new ArrayList<>();
    for (AgreeVar var : topNode.inputs) {
        inputs.add(var);
        inputStrs.add(var.id);
    }
    for (AgreeVar var : topNode.outputs) {
        inputs.add(var);
    }
    // and type equations. This would clear this up
    for (AgreeStatement statement : topNode.assertions) {
        if (AgreeUtils.referenceIsInContract(statement, topNode.compInst)) {
            // this is a strange hack we have to do. we have to make
            // equation and property
            // statements not assertions. They should all be binary
            // expressions with an
            // equals operator. We will need to removing their corresponding
            // variable
            // from the inputs and add them to the local variables
            BinaryExpr binExpr;
            IdExpr varId;
            try {
                binExpr = (BinaryExpr) statement.expr;
                varId = (IdExpr) binExpr.left;
            } catch (ClassCastException e) {
                // some equation variables are assertions for
                // subrange types. do not translate these to
                // local equations. Just add them to assertions
                assertions.add(statement.expr);
                continue;
            }
            boolean found = false;
            int index;
            for (index = 0; index < inputs.size(); index++) {
                VarDecl var = inputs.get(index);
                if (var.id.equals(varId.id)) {
                    found = true;
                    break;
                }
            }
            if (!found || binExpr.op != BinaryOp.EQUAL) {
                throw new AgreeException("Something went very wrong with the lustre generation in the realizability analysis");
            }
            locals.add(inputs.remove(index));
            equations.add(new Equation(varId, binExpr.right));
        }
    }
    NodeBuilder builder = new NodeBuilder("main");
    builder.addInputs(inputs);
    builder.addLocals(locals);
    builder.addEquations(equations);
    builder.addProperties(properties);
    builder.addAssertions(assertions);
    builder.setRealizabilityInputs(inputStrs);
    Node main = builder.build();
    List<Node> nodes = new ArrayList<>();
    nodes.add(main);
    nodes.addAll(agreeProgram.globalLustreNodes);
    List<Function> uFunctions = new ArrayList<>();
    uFunctions.addAll(agreeProgram.uninterpretedFunctions);
    Program program = new ProgramBuilder().addTypes(types).addFunctions(uFunctions).addNodes(nodes).setMain(main.id).build();
    return program;
}

Example 37 with IdExpr

use of jkind.lustre.IdExpr in project AGREE by loonwerks.

the class LustreAstBuilder method addNodeCall.

protected static void addNodeCall(AgreeNode agreeNode, List<AgreeStatement> assertions, String prefix, Expr clockExpr, Node lustreNode) {
    List<Expr> inputIds = new ArrayList<>();
    for (VarDecl var : lustreNode.inputs) {
        String suffix = "";
        // if this component implementation is using the latched semantics
        if (agreeNode.timing == TimingModel.LATCHED) {
            EObject ref = ((AgreeVar) var).reference;
            if (ref instanceof DataPortImpl && ((DataPortImpl) ref).isIn() || (ref instanceof EventDataPortImpl && ((EventDataPortImpl) ref).isIn() || (ref instanceof Arg && ref.eContainer() instanceof InputStatement))) {
                suffix = AgreeInlineLatchedConnections.LATCHED_SUFFIX;
            }
        }
        inputIds.add(new IdExpr(prefix + var.id + suffix));
    }
    if (agreeNode.timing == TimingModel.ASYNC || agreeNode.timing == TimingModel.LATCHED) {
        // the clock expr should be the last input to the node
        inputIds.set(inputIds.size() - 1, clockExpr);
    }
    Expr condactExpr = new NodeCallExpr(lustreNode.id, inputIds);
    AgreeStatement condactCall = new AgreeStatement("", condactExpr, null);
    assertions.add(condactCall);
}

Example 38 with IdExpr

use of jkind.lustre.IdExpr in project AGREE by loonwerks.

the class LustreAstBuilder method getHist.

protected static Equation getHist(IdExpr histId, Expr expr) {
    Expr preHist = new UnaryExpr(UnaryOp.PRE, histId);
    Expr preAndNow = LustreExprFactory.makeANDExpr(preHist, expr);
    return new Equation(histId, new BinaryExpr(expr, BinaryOp.ARROW, preAndNow));
}

Example 39 with IdExpr

use of jkind.lustre.IdExpr in project AGREE by loonwerks.

the class LustreAstBuilder method addInputsAndOutputs.

protected static void addInputsAndOutputs(AgreeNode parentNode, List<AgreeVar> inputs, List<AgreeVar> outputs, List<AgreeStatement> patternProps, AgreeNode subAgreeNode, Node lustreNode, String prefix) {
    int varCount = 0;
    for (AgreeVar var : subAgreeNode.inputs) {
        varCount++;
        AgreeVar input = new AgreeVar(prefix + var.id, var.type, var.reference, var.compInst, var.featInst);
        inputs.add(input);
    }
    for (AgreeVar var : subAgreeNode.outputs) {
        varCount++;
        AgreeVar output = new AgreeVar(prefix + var.id, var.type, var.reference, var.compInst, var.featInst);
        outputs.add(output);
    }
    // for (AgreeVar var : subAgreeNode.locals) {
    // varCount++;
    // AgreeVar local = new AgreeVar(prefix + var.id, var.type, var.reference, var.compInst, var.featInst);
    // outputs.add(local);
    // }
    int i = 0;
    for (AgreeStatement statement : subAgreeNode.assumptions) {
        varCount++;
        AgreeVar output = new AgreeVar(prefix + assumeSuffix + i++, NamedType.BOOL, statement.reference, subAgreeNode.compInst, null);
        outputs.add(output);
    }
    int k = 0;
    for (AgreeStatement statement : subAgreeNode.patternProps) {
        varCount++;
        AgreeVar output = new AgreeVar(prefix + patternPropSuffix + k++, NamedType.BOOL, statement, subAgreeNode.compInst, null);
        patternProps.add(new AgreeStatement(prefix.replace("__", "") + ": " + statement.string, new IdExpr(output.id), statement.reference));
        outputs.add(output);
    }
    // add the assumption history var
    varCount++;
    outputs.add(new AgreeVar(prefix + assumeSuffix + "__HIST", NamedType.BOOL, null, subAgreeNode.compInst, null));
    int j = 0;
    for (AgreeStatement statement : subAgreeNode.lemmas) {
        varCount++;
        AgreeVar output = new AgreeVar(prefix + lemmaSuffix + j++, NamedType.BOOL, statement.reference, subAgreeNode.compInst, null);
        outputs.add(output);
    }
    if (parentNode.timing == TimingModel.ASYNC || parentNode.timing == TimingModel.LATCHED) {
        inputs.add(subAgreeNode.clockVar);
        varCount++;
    }
    if (lustreNode.inputs.size() != varCount) {
        throw new AgreeException("Something went wrong during node flattening");
    }
}

Example 40 with IdExpr

use of jkind.lustre.IdExpr in project AGREE by loonwerks.

the class LustreAstBuilder method addHistoricalAssumptionConstraint.

private static void addHistoricalAssumptionConstraint(AgreeNode agreeNode, String prefix, Expr clockExpr, List<AgreeStatement> assertions, Node lustreNode) {
    Expr assumConj = new BoolExpr(true);
    for (VarDecl lustreVar : lustreNode.inputs) {
        AgreeVar var = (AgreeVar) lustreVar;
        if (var.reference instanceof AssumeStatement || var.reference instanceof LemmaStatement) {
            Expr varId = new IdExpr(prefix + var.id);
            assumConj = LustreExprFactory.makeANDExpr(varId, assumConj);
        }
    }
    // assumConj = new BinaryExpr(clockExpr, BinaryOp.IMPLIES, assumConj);
    Expr histCall = new NodeCallExpr(historyNodeName, assumConj);
    Expr assertExpr = new BinaryExpr(new IdExpr(prefix + assumeSuffix + "__HIST"), BinaryOp.EQUAL, histCall);
    assertions.add(new AgreeStatement("", assertExpr, null));
}