Examples with Constant gov.sandia.n2a.language.Constant used on opensource projects

Example 16 with Constant

use of gov.sandia.n2a.language.Constant in project n2a by frothga.

the class OR method simplify.

public Operator simplify(Variable from) {
    Operator result = super.simplify(from);
    if (result != this)
        return result;
    if (operand0 instanceof Constant) {
        Type c0 = ((Constant) operand0).value;
        if (c0 instanceof Scalar) {
            from.changed = true;
            double value = ((Scalar) c0).value;
            if (value == 0)
                return operand1;
            else
                return new Constant(new Scalar(1));
        }
    } else if (operand1 instanceof Constant) {
        Type c1 = ((Constant) operand1).value;
        if (c1 instanceof Scalar) {
            from.changed = true;
            double value = ((Scalar) c1).value;
            if (value == 0)
                return operand0;
            else
                return new Constant(new Scalar(1));
        }
    }
    return this;
}

Example 17 with Constant

use of gov.sandia.n2a.language.Constant in project n2a by frothga.

the class Scalar method convert.

/**
 *        General utility: given a string containing a number with units, convert to the scaled SI value.
 */
public static double convert(String expression) {
    try {
        Operator op = Operator.parse(expression);
        double sign = 1;
        if (op instanceof Negate) {
            op = ((Negate) op).operand;
            sign = -1;
        }
        if (!(op instanceof Constant))
            return 0;
        Type result = ((Constant) op).value;
        if (result instanceof Scalar)
            return ((Scalar) result).value * sign;
    } catch (ParseException e) {
    }
    return 0;
}

Example 18 with Constant

use of gov.sandia.n2a.language.Constant in project n2a by frothga.

the class ExportJob method genericPart.

public void genericPart(MPart part, Element result, String... skip) {
    EquationSet partEquations = getEquations(part);
    List<Element> resultElements = new ArrayList<Element>();
    List<String> skipList = Arrays.asList(skip);
    for (MNode c : part) {
        MPart p = (MPart) c;
        String key = p.key();
        // Skip connection bindings. They are unpacked elsewhere.
        if (partEquations.findConnection(key) != null)
            continue;
        if (key.startsWith("$"))
            continue;
        if (skipList.contains(key))
            continue;
        if (p.isPart()) {
            genericPart(p, resultElements);
        } else {
            // We need to check two things:
            // * Has the variable been overridden after it was declared in the base part?
            // * Is it an expression or a constant?
            // An override that is an expression should trigger a LEMS extension part.
            // A constant that is either overridden or required should be emitted here.
            boolean expression = true;
            String value = p.get();
            Variable v = partEquations.find(new Variable(key));
            try {
                // This could convert an expression to a constant.
                Type evalue = v.eval(context);
                // TODO: if it is a simple AccessVariable, then it shouldn't be viewed as an expression.
                Operator op = Operator.parse(value);
                if (op instanceof Constant) {
                    // "direct" value
                    Type dvalue = ((Constant) op).value;
                    expression = !evalue.equals(dvalue);
                }
            } catch (Exception e) {
            }
            boolean overridden = p.isFromTopDocument() || isOverride(part.get("$inherit").replace("\"", ""), key);
            String name = sequencer.bestFieldName(result, p.get("$metadata", "backend.lems.param"));
            if (name.isEmpty())
                name = key;
            boolean required = sequencer.isRequired(result, name);
            if (required || (overridden && !expression)) {
                // biophysicalUnits() should return strings (non-numbers) unmodified
                result.setAttribute(name, biophysicalUnits(p.get()));
            }
        }
    }
    sequencer.append(result, resultElements);
}

Example 19 with Constant

use of gov.sandia.n2a.language.Constant in project n2a by frothga.

the class JobC method prepareStaticObjects.

public void prepareStaticObjects(Operator op, final CRenderer context, final String pad) throws Exception {
    Visitor visitor = new Visitor() {

        public boolean visit(Operator op) {
            if (op instanceof Output) {
                Output o = (Output) op;
                if (// column name is generated
                o.operands.length < 3) {
                    String stringName = stringNames.get(op);
                    BackendDataC bed = (BackendDataC) context.part.backendData;
                    if (context.global ? bed.needGlobalPath : bed.needLocalPath) {
                        context.result.append(pad + "path (" + stringName + ");\n");
                        context.result.append(pad + stringName + " += \"." + o.variableName + "\";\n");
                    } else {
                        context.result.append(pad + stringName + " = \"" + o.variableName + "\";\n");
                    }
                } else if (// mode flags are present
                o.operands.length > 3) {
                    if (o.operands[0] instanceof Constant) {
                        // Detect raw flag
                        Operator op3 = o.operands[3];
                        if (op3 instanceof Constant) {
                            if (op3.toString().contains("raw")) {
                                String outputName = outputNames.get(o.operands[0].toString());
                                context.result.append(pad + outputName + "->raw = true;\n");
                            }
                        }
                    }
                }
                // Continue to drill down, because I/O functions can be nested.
                return true;
            }
            if (op instanceof Input) {
                Input i = (Input) op;
                if (i.operands[0] instanceof Constant) {
                    String inputName = inputNames.get(i.operands[0].toString());
                    if (!context.global) {
                        context.result.append(pad + inputName + "->epsilon = " + resolve(context.bed.dt.reference, context, false) + " / 1000;\n");
                    }
                    // Detect time flag
                    String mode = "";
                    if (i.operands.length > 3) {
                        // just assuming it's a constant string
                        mode = i.operands[3].toString();
                    } else if (i.operands[1] instanceof Constant) {
                        Constant c = (Constant) i.operands[1];
                        if (c.value instanceof Text)
                            mode = c.toString();
                    }
                    if (mode.contains("time")) {
                        context.result.append(pad + inputName + "->time = true;\n");
                    }
                }
                return true;
            }
            return true;
        }
    };
    op.visit(visitor);
}