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org.openapitools.codegen.languages.AbstractCppCodegen Maven / Gradle / Ivy
/*
* Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
* Copyright 2018 SmartBear Software
*
* 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
*
* https://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.openapitools.codegen.languages;
import com.google.common.collect.ImmutableMap;
import com.samskivert.mustache.Mustache.Lambda;
import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.media.Schema;
import io.swagger.v3.oas.models.servers.Server;
import io.swagger.v3.oas.models.servers.ServerVariables;
import io.swagger.v3.oas.models.servers.ServerVariable;
import org.openapitools.codegen.*;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;
import org.openapitools.codegen.model.ModelMap;
import org.openapitools.codegen.model.ModelsMap;
import org.openapitools.codegen.templating.mustache.IndentedLambda;
import org.openapitools.codegen.utils.ModelUtils;
import org.openapitools.codegen.utils.URLPathUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
abstract public class AbstractCppCodegen extends DefaultCodegen implements CodegenConfig {
private final Logger LOGGER = LoggerFactory.getLogger(AbstractCppCodegen.class);
protected static final String RESERVED_WORD_PREFIX_OPTION = "reservedWordPrefix";
protected static final String RESERVED_WORD_PREFIX_DESC = "Prefix to prepend to reserved words in order to avoid conflicts";
protected String reservedWordPrefix = "r_";
protected static final String VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_OPTION = "variableNameFirstCharacterUppercase";
protected static final String VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_DESC = "Make first character of variable name uppercase (eg. value -> Value)";
protected boolean variableNameFirstCharacterUppercase = true;
public AbstractCppCodegen() {
super();
/*
* Reserved words. Override this with reserved words specific to your language
*/
reservedWords = new HashSet<>(
Arrays.asList(
"alignas",
"alignof",
"and",
"and_eq",
"asm",
"auto",
"bitand",
"bitor",
"bool",
"break",
"case",
"catch",
"char",
"char16_t",
"char32_t",
"class",
"compl",
"concept",
"const",
"constexpr",
"const_cast",
"continue",
"decltype",
"default",
"delete",
"do",
"double",
"dynamic_cast",
"else",
"enum",
"explicit",
"export",
"extern",
"false",
"float",
"for",
"friend",
"goto",
"if",
"inline",
"int",
"linux",
"long",
"mutable",
"namespace",
"new",
"noexcept",
"not",
"not_eq",
"NULL",
"nullptr",
"operator",
"or",
"or_eq",
"private",
"protected",
"public",
"register",
"reinterpret_cast",
"requires",
"return",
"short",
"signed",
"sizeof",
"static",
"static_assert",
"static_cast",
"struct",
"switch",
"template",
"this",
"thread_local",
"throw",
"true",
"try",
"typedef",
"typeid",
"typename",
"union",
"unsigned",
"using",
"virtual",
"void",
"volatile",
"wchar_t",
"while",
"xor",
"xor_eq")
);
addOption(RESERVED_WORD_PREFIX_OPTION,
RESERVED_WORD_PREFIX_DESC,
this.reservedWordPrefix);
addOption(VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_OPTION,
VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_DESC,
Boolean.toString(this.variableNameFirstCharacterUppercase));
}
@Override
@SuppressWarnings("static-method")
public String sanitizeName(String name) {
String sanitizedName = super.sanitizeName(name);
sanitizedName = sanitizedName.replaceAll("-", "");
return sanitizedName;
}
@Override
public String escapeQuotationMark(String input) {
// remove " to avoid code injection
return input.replace("\"", "");
}
@Override
public String escapeUnsafeCharacters(String input) {
return input.replace("*/", "*_/").replace("/*", "/_*");
}
@Override
public String toApiName(String type) {
return sanitizeName(modelNamePrefix + super.toApiName(type));
}
@Override
public String toModelName(String name) {
// obtain the name from modelNameMapping directly if provided
if (modelNameMapping.containsKey(name)) {
return modelNameMapping.get(name);
}
if (name == null) {
LOGGER.warn("Model name can't be null. Default to 'UnknownModel'.");
name = "UnknownModel";
}
if (typeMapping.keySet().contains(name) || typeMapping.values().contains(name)
|| importMapping.values().contains(name) || defaultIncludes.contains(name)
|| languageSpecificPrimitives.contains(name)) {
return name;
} else {
String sanitizedName = sanitizeName(modelNamePrefix + Character.toUpperCase(name.charAt(0)) + name.substring(1));
sanitizedName = sanitizedName.replaceFirst("^([^_a-zA-Z])", reservedWordPrefix + "$1");
return sanitizedName;
}
}
@Override
public String toEnumValue(String value, String datatype) {
return escapeText(value);
}
@Override
public String toVarName(String name) {
// obtain the name from nameMapping directly if provided
if (nameMapping.containsKey(name)) {
return nameMapping.get(name);
}
if (typeMapping.keySet().contains(name) || typeMapping.values().contains(name)
|| importMapping.values().contains(name) || defaultIncludes.contains(name)
|| languageSpecificPrimitives.contains(name)) {
return sanitizeName(name);
}
if (isReservedWord(name) || name.matches("^\\d.*")) {
return escapeReservedWord(name);
}
if (variableNameFirstCharacterUppercase && name.length() > 1) {
return sanitizeName(Character.toUpperCase(name.charAt(0)) + name.substring(1));
}
return sanitizeName(name);
}
/**
* Escapes a reserved word as defined in the `reservedWords` array. Handle
* escaping those terms here. This logic is only called if a variable
* matches the reserved words
*
* @return the escaped term
*/
@Override
public String escapeReservedWord(String name) {
if (this.reservedWordsMappings().containsKey(name)) {
return this.reservedWordsMappings().get(name);
}
return sanitizeName(reservedWordPrefix + name);
}
@Override
public String toOperationId(String operationId) {
if (isReservedWord(operationId)) {
LOGGER.warn("{} (reserved word) cannot be used as method name. Renamed to {}", operationId, escapeReservedWord(operationId));
return escapeReservedWord(operationId);
}
return sanitizeName(super.toOperationId(operationId));
}
@Override
public String toParamName(String name) {
// obtain the name from parameterNameMapping directly if provided
if (parameterNameMapping.containsKey(name)) {
return parameterNameMapping.get(name);
}
if (isReservedWord(name) || name.matches("^\\d.*")) {
return escapeReservedWord(name);
}
return sanitizeName(super.toParamName(name));
}
@SuppressWarnings("rawtypes")
@Override
public CodegenProperty fromProperty(String name, Schema p, boolean required) {
CodegenProperty property = super.fromProperty(name, p, required);
String nameInCamelCase = property.nameInPascalCase;
if (nameInCamelCase.length() > 1) {
nameInCamelCase = sanitizeName(Character.toLowerCase(nameInCamelCase.charAt(0)) + nameInCamelCase.substring(1));
} else {
nameInCamelCase = sanitizeName(nameInCamelCase);
}
if (isReservedWord(nameInCamelCase) || nameInCamelCase.matches("^\\d.*")) {
nameInCamelCase = escapeReservedWord(nameInCamelCase);
}
property.nameInCamelCase = nameInCamelCase;
return property;
}
/**
* Output the Getter name for boolean property, e.g. isActive
*
* @param name the name of the property
* @return getter name based on naming convention
*/
@Override
public String toBooleanGetter(String name) {
return "is" + getterAndSetterCapitalize(name);
}
@Override
public String getTypeDeclaration(String str) {
return "std::shared_ptr<" + toModelName(str) + ">";
}
@Override
public void processOpts() {
super.processOpts();
if (StringUtils.isEmpty(System.getenv("CPP_POST_PROCESS_FILE"))) {
LOGGER.info("Environment variable CPP_POST_PROCESS_FILE not defined so the C++ code may not be properly formatted. To define it, try 'export CPP_POST_PROCESS_FILE=\"/usr/local/bin/clang-format -i\"' (Linux/Mac)");
LOGGER.info("NOTE: To enable file post-processing, 'enablePostProcessFile' must be set to `true` (--enable-post-process-file for CLI).");
}
if (additionalProperties.containsKey(RESERVED_WORD_PREFIX_OPTION)) {
reservedWordPrefix = (String) additionalProperties.get(RESERVED_WORD_PREFIX_OPTION);
}
additionalProperties.put(RESERVED_WORD_PREFIX_OPTION, reservedWordPrefix);
if (additionalProperties.containsKey(VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_OPTION))
variableNameFirstCharacterUppercase =
convertPropertyToBooleanAndWriteBack(VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_OPTION);
additionalProperties.put(VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_OPTION, variableNameFirstCharacterUppercase);
}
@Override
protected ImmutableMap.Builder addMustacheLambdas() {
return super.addMustacheLambdas()
.put("multiline_comment_4", new IndentedLambda(4, " ", "///", false, false));
}
@Override
public void postProcessFile(File file, String fileType) {
if (file == null) {
return;
}
String cppPostProcessFile = System.getenv("CPP_POST_PROCESS_FILE");
if (StringUtils.isEmpty(cppPostProcessFile)) {
return; // skip if CPP_POST_PROCESS_FILE env variable is not defined
}
// only process files with cpp extension
if ("cpp".equals(FilenameUtils.getExtension(file.toString())) || "h".equals(FilenameUtils.getExtension(file.toString()))) {
String command = cppPostProcessFile + " " + file;
try {
Process p = Runtime.getRuntime().exec(command);
p.waitFor();
int exitValue = p.exitValue();
if (exitValue != 0) {
LOGGER.error("Error running the command ({}). Exit value: {}", command, exitValue);
} else {
LOGGER.info("Successfully executed: {}", command);
}
} catch (InterruptedException | IOException e) {
LOGGER.error("Error running the command ({}). Exception: {}", command, e.getMessage());
// Restore interrupted state
Thread.currentThread().interrupt();
}
}
}
@Override
public void preprocessOpenAPI(OpenAPI openAPI) {
List serverList = openAPI.getServers();
List CodegenServerList = new ArrayList();
URL url = URLPathUtils.getServerURL(openAPI, serverVariableOverrides());
String port = URLPathUtils.getPort(url, "");
String host = url.getHost();
String scheme = url.getProtocol();
if (!port.isEmpty()) {
this.additionalProperties.put("serverPort", port);
}
if (!host.isEmpty()) {
this.additionalProperties.put("serverHost", host);
}
if (!scheme.isEmpty()) {
this.additionalProperties.put("scheme", scheme);
}
if (!serverList.isEmpty()) {
for (Server server : serverList) {
CodegenServer s = new CodegenServer();
s.description = server.getDescription();
s.url = server.getUrl();
s.variables = new ArrayList();
ServerVariables serverVars = server.getVariables();
if (serverVars != null) {
serverVars.forEach((key, value) -> {
CodegenServerVariable codegenServerVar = new CodegenServerVariable();
ServerVariable ServerVar = value;
codegenServerVar.name = key;
codegenServerVar.description = ServerVar.getDescription();
codegenServerVar.defaultValue = ServerVar.getDefault();
codegenServerVar.enumValues = ServerVar.getEnum();
s.variables.add(codegenServerVar);
});
}
CodegenServerList.add(s);
}
this.vendorExtensions.put("x-cpp-global-server-list", CodegenServerList);
}
}
@Override
public ModelsMap postProcessModels(ModelsMap objs) {
for (ModelMap mo : objs.getModels()) {
CodegenModel cm = mo.getModel();
// cannot handle inheritance from maps and arrays in C++
if ((cm.isArray || cm.isMap) && (cm.parentModel == null)) {
cm.parent = null;
}
}
return postProcessModelsEnum(objs);
}
@Override
public Map postProcessAllModels(Map objs) {
Map models = super.postProcessAllModels(objs);
for (final String key : models.keySet()) {
CodegenModel mo = ModelUtils.getModelByName(key, models);
addForwardDeclarations(mo, models);
}
return models;
}
private void addForwardDeclarations(CodegenModel parentModel, Map objs) {
List forwardDeclarations = new ArrayList<>();
if (!parentModel.hasVars) {
return;
}
for (CodegenProperty property : parentModel.vars) {
if (!((property.isContainer && property.mostInnerItems.isModel) || (property.isModel))) {
continue;
}
String childPropertyType = property.isContainer ? property.mostInnerItems.baseType : property.baseType;
for (final String key : objs.keySet()) {
CodegenModel childModel = ModelUtils.getModelByName(key, objs);
if (!childPropertyType.equals(childModel.classname) || childPropertyType.equals(parentModel.classname) || !childModel.hasVars) {
continue;
}
String forwardDecl = "class " + childPropertyType + ";";
if (!forwardDeclarations.contains(forwardDecl)) {
forwardDeclarations.add(forwardDecl);
}
}
}
if (!forwardDeclarations.isEmpty()) {
parentModel.vendorExtensions.put("x-has-forward-declarations", true);
parentModel.vendorExtensions.put("x-forward-declarations", forwardDeclarations);
}
return;
}
@Override
public GeneratorLanguage generatorLanguage() {
return GeneratorLanguage.C_PLUS_PLUS;
}
}
