org.jamesii.ml3.parser.buildIns.mathFunctions.CosHFunction Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ml3 Show documentation

The Modeling Language for Linked Lives, a domain specific modeling language for agent-based computational demography.

There is a newer version: 0.2.8

/*
 * Copyright 2018 University of Rostock
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jamesii.ml3.parser.buildIns.mathFunctions;

import org.jamesii.ml3.model.types.BasicType;
import org.jamesii.ml3.model.types.IType;
import org.jamesii.ml3.model.validation.typeChecking.Scope;
import org.jamesii.ml3.model.validation.typeChecking.Utils;
import org.jamesii.ml3.model.values.IValue;
import org.jamesii.ml3.model.values.IntValue;
import org.jamesii.ml3.model.values.RealValue;
import org.jamesii.ml3.parser.IParseTreeNode;
import org.jamesii.ml3.parser.buildIns.BuildIns;
import org.jamesii.ml3.simulator.context.IContext;
import org.jamesii.ml3.simulator.exceptions.TypeException;

import java.util.Collection;

/**
 * Represents the "cosh : real -> real" function, hyperbolic cosine.
 */
public class CosHFunction implements IMathFunction {
    @Override
    public IValue evaluate(Collection parameters, IContext context) {
        IValue v = parameters.iterator().next();
        if (v instanceof RealValue) {
            return new RealValue(Math.cosh(((RealValue) v).getValue()));
        } else if (v instanceof IntValue) {
            return new RealValue(Math.cosh(((IntValue) v).getValue()));
        } else
            throw new TypeException("Type error in arguments of " + BuildIns.FUNC_COSH + ".");    }

    @Override
    public IType getType(Collection parameters, Scope scope, IParseTreeNode currentNode) {
        if(!Utils.checkParameterSize(scope, parameters, 1, currentNode)){
            return BasicType.UNKNOWN;
        }
        if (!Utils.checkNumeric(scope, currentNode, parameters.iterator().next())){
            return BasicType.UNKNOWN;
        }
        return BasicType.REAL;
    }

    @Override
    public String getName() {
        return BuildIns.FUNC_COSH;
    }
}