| /* |
| * Copyright 2005 Sascha Weinreuter |
| * |
| * 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.intellij.lang.xpath.context.functions; |
| |
| import com.intellij.openapi.util.text.StringUtil; |
| |
| import org.intellij.lang.xpath.psi.XPathType; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.Arrays; |
| |
| public class FunctionImpl implements Function { |
| private final String name; |
| private final Parameter[] parameters; |
| private final XPathType returnType; |
| private final int minArity; |
| |
| public FunctionImpl(String name, @NotNull XPathType returnType, Parameter... parameters) { |
| this.name = name; |
| this.parameters = parameters; |
| this.returnType = returnType; |
| this.minArity = calcArity(parameters); |
| } |
| |
| private static int calcArity(Parameter[] parameters) { |
| int arity = 0; |
| boolean stop = false; |
| for (Parameter parameter : parameters) { |
| assert !stop; |
| |
| if (parameter.kind == Parameter.Kind.REQUIRED) { |
| arity++; |
| } else if (parameter.kind == Parameter.Kind.OPTIONAL) { |
| stop = true; |
| } else if (parameter.kind == Parameter.Kind.VARARG) { |
| stop = true; |
| } |
| } |
| return arity; |
| } |
| |
| @Override |
| public String buildSignature() { |
| final StringBuilder sb = new StringBuilder(getName()).append("("); |
| sb.append(StringUtil.join(Arrays.asList(parameters), StringUtil.createToStringFunction(Parameter.class), ", ")); |
| return sb.append(")").toString(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| final FunctionImpl function = (FunctionImpl)o; |
| |
| if (!name.equals(function.name)) return false; |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| return name.hashCode(); |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @NotNull |
| @Override |
| public Parameter[] getParameters() { |
| return parameters; |
| } |
| |
| @NotNull |
| @Override |
| public XPathType getReturnType() { |
| return returnType; |
| } |
| |
| @Override |
| public int getMinArity() { |
| return minArity; |
| } |
| } |