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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// 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 com.google.devtools.build.docgen.skylark;
import com.google.devtools.build.lib.skylarkinterface.Param;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
import com.google.devtools.build.lib.skylarkinterface.SkylarkSignature;
import com.google.devtools.build.lib.syntax.EvalUtils;
import com.google.devtools.build.lib.syntax.FuncallExpression;
import com.google.devtools.build.lib.syntax.Runtime.NoneType;
import com.google.devtools.build.lib.syntax.SkylarkList;
import com.google.devtools.build.lib.syntax.SkylarkList.MutableList;
import com.google.devtools.build.lib.syntax.SkylarkList.Tuple;
import java.util.Arrays;
import java.util.Map;
import java.util.regex.Pattern;
/**
* Abstract class for containing documentation for a Skylark syntactic entity.
*/
abstract class SkylarkDoc {
protected static final String TOP_LEVEL_ID = "globals";
/**
* Returns a string containing the name of the entity being documented.
*/
public abstract String getName();
/**
* Returns a string containing the formatted HTML documentation of the entity being documented.
*/
public String getDocumentation() {
String doc = getEntityDocumentation();
if (doc == null || doc.length() == 0) {
return "";
}
// Check if valid punctiation is not present at the end of the documentation.
if (!Pattern.matches("[.?!]$", doc)) {
// Add a final period.
doc += ".";
}
return doc;
}
/**
* Returns a string containing the HTML documentation of the entity, before being post-processed.
*/
protected abstract String getEntityDocumentation();
protected String getTypeAnchor(Class<?> returnType, Class<?> generic1) {
return getTypeAnchor(returnType) + " of " + getTypeAnchor(generic1) + "s";
}
protected String getTypeAnchor(Class<?> type) {
if (type.equals(Boolean.class) || type.equals(boolean.class)) {
return "<a class=\"anchor\" href=\"" + TOP_LEVEL_ID + ".html#bool\">bool</a>";
} else if (type.equals(String.class)) {
return "<a class=\"anchor\" href=\"string.html\">string</a>";
} else if (Map.class.isAssignableFrom(type)) {
return "<a class=\"anchor\" href=\"dict.html\">dict</a>";
} else if (type.equals(Tuple.class)) {
return "<a class=\"anchor\" href=\"list.html\">tuple</a>";
} else if (type.equals(MutableList.class)) {
return "<a class=\"anchor\" href=\"list.html\">list</a>";
} else if (type.equals(SkylarkList.class)) {
return "<a class=\"anchor\" href=\"list.html\">sequence</a>";
} else if (type.equals(Void.TYPE) || type.equals(NoneType.class)) {
return "<a class=\"anchor\" href=\"" + TOP_LEVEL_ID + ".html#None\">None</a>";
} else if (type.isAnnotationPresent(SkylarkModule.class)) {
SkylarkModule module = type.getAnnotation(SkylarkModule.class);
if (module.documented()) {
return String.format("<a class=\"anchor\" href=\"%1$s.html\">%1$s</a>",
module.name());
}
}
return EvalUtils.getDataTypeNameFromClass(type);
}
// Elide self parameter from parameters in class methods.
protected static Param[] adjustedParameters(SkylarkSignature annotation) {
Param[] params = annotation.parameters();
if (params.length > 0
&& !params[0].named()
&& (params[0].defaultValue() != null && params[0].defaultValue().isEmpty())
&& params[0].positional()
&& annotation.objectType() != Object.class
&& !FuncallExpression.isNamespace(annotation.objectType())) {
// Skip the self parameter, which is the first mandatory positional parameter.
return Arrays.copyOfRange(params, 1, params.length);
} else {
return params;
}
}
}
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