io.swagger.codegen.languages.Swift4Codegen Maven / Gradle / Ivy
package io.swagger.codegen.languages;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterators;
import com.google.common.collect.Lists;
import io.swagger.codegen.CliOption;
import io.swagger.codegen.CodegenConfig;
import io.swagger.codegen.CodegenConstants;
import io.swagger.codegen.CodegenModel;
import io.swagger.codegen.CodegenProperty;
import io.swagger.codegen.CodegenType;
import io.swagger.codegen.DefaultCodegen;
import io.swagger.codegen.SupportingFile;
import io.swagger.models.Model;
import io.swagger.models.ModelImpl;
import io.swagger.models.Operation;
import io.swagger.models.Swagger;
import io.swagger.models.parameters.HeaderParameter;
import io.swagger.models.parameters.Parameter;
import io.swagger.models.properties.ArrayProperty;
import io.swagger.models.properties.MapProperty;
import io.swagger.models.properties.Property;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.text.WordUtils;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.annotation.Nullable;
public class Swift4Codegen extends DefaultCodegen implements CodegenConfig {
public static final String PROJECT_NAME = "projectName";
public static final String RESPONSE_AS = "responseAs";
public static final String UNWRAP_REQUIRED = "unwrapRequired";
public static final String OBJC_COMPATIBLE = "objcCompatible";
public static final String POD_SOURCE = "podSource";
public static final String POD_AUTHORS = "podAuthors";
public static final String POD_SOCIAL_MEDIA_URL = "podSocialMediaURL";
public static final String POD_DOCSET_URL = "podDocsetURL";
public static final String POD_LICENSE = "podLicense";
public static final String POD_HOMEPAGE = "podHomepage";
public static final String POD_SUMMARY = "podSummary";
public static final String POD_DESCRIPTION = "podDescription";
public static final String POD_SCREENSHOTS = "podScreenshots";
public static final String POD_DOCUMENTATION_URL = "podDocumentationURL";
public static final String SWIFT_USE_API_NAMESPACE = "swiftUseApiNamespace";
public static final String DEFAULT_POD_AUTHORS = "Swagger Codegen";
public static final String LENIENT_TYPE_CAST = "lenientTypeCast";
protected static final String LIBRARY_PROMISE_KIT = "PromiseKit";
protected static final String LIBRARY_RX_SWIFT = "RxSwift";
protected static final String[] RESPONSE_LIBRARIES = {LIBRARY_PROMISE_KIT, LIBRARY_RX_SWIFT};
protected static final String MODEL_CLASSES = "modelClasses";
protected String projectName = "SwaggerClient";
protected boolean unwrapRequired;
protected boolean objcCompatible = false;
protected boolean lenientTypeCast = false;
protected boolean swiftUseApiNamespace;
protected String[] responseAs = new String[0];
protected String sourceFolder = "Classes" + File.separator + "Swaggers";
@Override
public CodegenType getTag() {
return CodegenType.CLIENT;
}
@Override
public String getName() {
return "swift4";
}
@Override
public String getHelp() {
return "Generates a swift client library.";
}
@Override
protected void addAdditionPropertiesToCodeGenModel(CodegenModel codegenModel,
ModelImpl swaggerModel) {
final Property additionalProperties = swaggerModel.getAdditionalProperties();
if (additionalProperties != null) {
codegenModel.additionalPropertiesType = getSwaggerType(additionalProperties);
}
}
/**
* Constructor for the swift4 language codegen module.
*/
public Swift4Codegen() {
super();
outputFolder = "generated-code" + File.separator + "swift";
modelTemplateFiles.put("model.mustache", ".swift");
apiTemplateFiles.put("api.mustache", ".swift");
embeddedTemplateDir = templateDir = "swift4";
apiPackage = File.separator + "APIs";
modelPackage = File.separator + "Models";
languageSpecificPrimitives = new HashSet<>(
Arrays.asList(
"Int",
"Int32",
"Int64",
"Float",
"Double",
"Bool",
"Void",
"String",
"Character",
"AnyObject",
"Any")
);
defaultIncludes = new HashSet<>(
Arrays.asList(
"Data",
"Date",
"URL", // for file
"UUID",
"Array",
"Dictionary",
"Set",
"Any",
"Empty",
"AnyObject",
"Any")
);
reservedWords = new HashSet<>(
Arrays.asList(
// name used by swift client
"ErrorResponse", "Response",
// Added for Objective-C compatibility
"id", "description", "NSArray", "NSURL", "CGFloat", "NSSet", "NSString", "NSInteger", "NSUInteger",
"NSError", "NSDictionary",
//
// Swift keywords. This list is taken from here:
// https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/LexicalStructure.html#//apple_ref/doc/uid/TP40014097-CH30-ID410
//
// Keywords used in declarations
"associatedtype", "class", "deinit", "enum", "extension", "fileprivate", "func", "import", "init",
"inout", "internal", "let", "open", "operator", "private", "protocol", "public", "static", "struct",
"subscript", "typealias", "var",
// Keywords uses in statements
"break", "case", "continue", "default", "defer", "do", "else", "fallthrough", "for", "guard", "if",
"in", "repeat", "return", "switch", "where", "while",
// Keywords used in expressions and types
"as", "Any", "catch", "false", "is", "nil", "rethrows", "super", "self", "Self", "throw", "throws", "true", "try",
// Keywords used in patterns
"_",
// Keywords that begin with a number sign
"#available", "#colorLiteral", "#column", "#else", "#elseif", "#endif", "#file", "#fileLiteral", "#function", "#if",
"#imageLiteral", "#line", "#selector", "#sourceLocation",
// Keywords reserved in particular contexts
"associativity", "convenience", "dynamic", "didSet", "final", "get", "infix", "indirect", "lazy", "left",
"mutating", "none", "nonmutating", "optional", "override", "postfix", "precedence", "prefix", "Protocol",
"required", "right", "set", "Type", "unowned", "weak", "willSet",
//
// Swift Standard Library types
// https://developer.apple.com/documentation/swift
//
// Numbers and Basic Values
"Bool", "Int", "Double", "Float", "Range", "ClosedRange", "Error", "Optional",
// Special-Use Numeric Types
"UInt", "UInt8", "UInt16", "UInt32", "UInt64", "Int8", "Int16", "Int32", "Int64", "Float80", "Float32", "Float64",
// Strings and Text
"String", "Character", "Unicode", "StaticString",
// Collections
"Array", "Dictionary", "Set", "OptionSet", "CountableRange", "CountableClosedRange",
// The following are commonly-used Foundation types
"URL", "Data", "Codable", "Encodable", "Decodable",
// The following are other words we want to reserve
"Void", "AnyObject", "Class", "dynamicType", "COLUMN", "FILE", "FUNCTION", "LINE"
)
);
typeMapping = new HashMap<>();
typeMapping.put("array", "Array");
typeMapping.put("List", "Array");
typeMapping.put("map", "Dictionary");
typeMapping.put("date", "Date");
typeMapping.put("Date", "Date");
typeMapping.put("DateTime", "Date");
typeMapping.put("boolean", "Bool");
typeMapping.put("string", "String");
typeMapping.put("char", "Character");
typeMapping.put("short", "Int");
typeMapping.put("int", "Int");
typeMapping.put("long", "Int64");
typeMapping.put("integer", "Int");
typeMapping.put("Integer", "Int");
typeMapping.put("float", "Float");
typeMapping.put("number", "Double");
typeMapping.put("double", "Double");
typeMapping.put("object", "Any");
typeMapping.put("file", "URL");
typeMapping.put("binary", "Data");
typeMapping.put("ByteArray", "Data");
typeMapping.put("UUID", "UUID");
importMapping = new HashMap<>();
cliOptions.add(new CliOption(PROJECT_NAME, "Project name in Xcode"));
cliOptions.add(new CliOption(RESPONSE_AS,
"Optionally use libraries to manage response. Currently "
+ StringUtils.join(RESPONSE_LIBRARIES, ", ")
+ " are available."));
cliOptions.add(new CliOption(UNWRAP_REQUIRED,
"Treat 'required' properties in response as non-optional "
+ "(which would crash the app if api returns null as opposed "
+ "to required option specified in json schema"));
cliOptions.add(new CliOption(OBJC_COMPATIBLE,
"Add additional properties and methods for Objective-C "
+ "compatibility (default: false)"));
cliOptions.add(new CliOption(POD_SOURCE, "Source information used for Podspec"));
cliOptions.add(new CliOption(CodegenConstants.POD_VERSION, "Version used for Podspec"));
cliOptions.add(new CliOption(POD_AUTHORS, "Authors used for Podspec"));
cliOptions.add(new CliOption(POD_SOCIAL_MEDIA_URL, "Social Media URL used for Podspec"));
cliOptions.add(new CliOption(POD_DOCSET_URL, "Docset URL used for Podspec"));
cliOptions.add(new CliOption(POD_LICENSE, "License used for Podspec"));
cliOptions.add(new CliOption(POD_HOMEPAGE, "Homepage used for Podspec"));
cliOptions.add(new CliOption(POD_SUMMARY, "Summary used for Podspec"));
cliOptions.add(new CliOption(POD_DESCRIPTION, "Description used for Podspec"));
cliOptions.add(new CliOption(POD_SCREENSHOTS, "Screenshots used for Podspec"));
cliOptions.add(new CliOption(POD_DOCUMENTATION_URL,
"Documentation URL used for Podspec"));
cliOptions.add(new CliOption(SWIFT_USE_API_NAMESPACE,
"Flag to make all the API classes inner-class "
+ "of {{projectName}}API"));
cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
.defaultValue(Boolean.TRUE.toString()));
cliOptions.add(new CliOption(LENIENT_TYPE_CAST,
"Accept and cast values for simple types (string->bool, "
+ "string->int, int->string)")
.defaultValue(Boolean.FALSE.toString()));
}
@Override
public void processOpts() {
super.processOpts();
// Setup project name
if (additionalProperties.containsKey(PROJECT_NAME)) {
setProjectName((String) additionalProperties.get(PROJECT_NAME));
} else {
additionalProperties.put(PROJECT_NAME, projectName);
}
sourceFolder = projectName + File.separator + sourceFolder;
// Setup unwrapRequired option, which makes all the
// properties with "required" non-optional
if (additionalProperties.containsKey(UNWRAP_REQUIRED)) {
setUnwrapRequired(convertPropertyToBooleanAndWriteBack(UNWRAP_REQUIRED));
}
additionalProperties.put(UNWRAP_REQUIRED, unwrapRequired);
// Setup objcCompatible option, which adds additional properties
// and methods for Objective-C compatibility
if (additionalProperties.containsKey(OBJC_COMPATIBLE)) {
setObjcCompatible(convertPropertyToBooleanAndWriteBack(OBJC_COMPATIBLE));
}
additionalProperties.put(OBJC_COMPATIBLE, objcCompatible);
// Setup unwrapRequired option, which makes all the properties with "required" non-optional
if (additionalProperties.containsKey(RESPONSE_AS)) {
Object responseAsObject = additionalProperties.get(RESPONSE_AS);
if (responseAsObject instanceof String) {
setResponseAs(((String) responseAsObject).split(","));
} else {
setResponseAs((String[]) responseAsObject);
}
}
additionalProperties.put(RESPONSE_AS, responseAs);
if (ArrayUtils.contains(responseAs, LIBRARY_PROMISE_KIT)) {
additionalProperties.put("usePromiseKit", true);
}
if (ArrayUtils.contains(responseAs, LIBRARY_RX_SWIFT)) {
additionalProperties.put("useRxSwift", true);
}
// Setup swiftUseApiNamespace option, which makes all the API
// classes inner-class of {{projectName}}API
if (additionalProperties.containsKey(SWIFT_USE_API_NAMESPACE)) {
setSwiftUseApiNamespace(convertPropertyToBooleanAndWriteBack(SWIFT_USE_API_NAMESPACE));
}
if (!additionalProperties.containsKey(POD_AUTHORS)) {
additionalProperties.put(POD_AUTHORS, DEFAULT_POD_AUTHORS);
}
if (additionalProperties.containsKey(MODEL_CLASSES)) {
additionalProperties.put("useModelClasses", true);
}
setLenientTypeCast(convertPropertyToBooleanAndWriteBack(LENIENT_TYPE_CAST));
supportingFiles.add(new SupportingFile("Podspec.mustache",
"",
projectName + ".podspec"));
supportingFiles.add(new SupportingFile("Cartfile.mustache",
"",
"Cartfile"));
supportingFiles.add(new SupportingFile("APIHelper.mustache",
sourceFolder,
"APIHelper.swift"));
supportingFiles.add(new SupportingFile("AlamofireImplementations.mustache",
sourceFolder,
"AlamofireImplementations.swift"));
supportingFiles.add(new SupportingFile("Configuration.mustache",
sourceFolder,
"Configuration.swift"));
supportingFiles.add(new SupportingFile("Extensions.mustache",
sourceFolder,
"Extensions.swift"));
supportingFiles.add(new SupportingFile("Models.mustache",
sourceFolder,
"Models.swift"));
supportingFiles.add(new SupportingFile("APIs.mustache",
sourceFolder,
"APIs.swift"));
supportingFiles.add(new SupportingFile("CodableHelper.mustache",
sourceFolder,
"CodableHelper.swift"));
supportingFiles.add(new SupportingFile("JSONEncodableEncoding.mustache",
sourceFolder,
"JSONEncodableEncoding.swift"));
supportingFiles.add(new SupportingFile("JSONEncodingHelper.mustache",
sourceFolder,
"JSONEncodingHelper.swift"));
supportingFiles.add(new SupportingFile("git_push.sh.mustache",
"",
"git_push.sh"));
supportingFiles.add(new SupportingFile("gitignore.mustache",
"",
".gitignore"));
}
@Override
protected boolean isReservedWord(String word) {
return word != null && reservedWords.contains(word); //don't lowercase as super does
}
@Override
public String escapeReservedWord(String name) {
if (this.reservedWordsMappings().containsKey(name)) {
return this.reservedWordsMappings().get(name);
}
return "_" + name; // add an underscore to the name
}
@Override
public String modelFileFolder() {
return outputFolder + File.separator + sourceFolder
+ modelPackage().replace('.', File.separatorChar);
}
@Override
public String apiFileFolder() {
return outputFolder + File.separator + sourceFolder
+ apiPackage().replace('.', File.separatorChar);
}
@Override
public String getTypeDeclaration(Property prop) {
if (prop instanceof ArrayProperty) {
ArrayProperty ap = (ArrayProperty) prop;
Property inner = ap.getItems();
return "[" + getTypeDeclaration(inner) + "]";
} else if (prop instanceof MapProperty) {
MapProperty mp = (MapProperty) prop;
Property inner = mp.getAdditionalProperties();
return "[String:" + getTypeDeclaration(inner) + "]";
}
return super.getTypeDeclaration(prop);
}
@Override
public String getSwaggerType(Property prop) {
String swaggerType = super.getSwaggerType(prop);
String type;
if (typeMapping.containsKey(swaggerType)) {
type = typeMapping.get(swaggerType);
if (languageSpecificPrimitives.contains(type) || defaultIncludes.contains(type)) {
return type;
}
} else {
type = swaggerType;
}
return toModelName(type);
}
@Override
public boolean isDataTypeFile(String dataType) {
return dataType != null && dataType.equals("URL");
}
@Override
public boolean isDataTypeBinary(final String dataType) {
return dataType != null && dataType.equals("Data");
}
/**
* Output the proper model name (capitalized).
*
* @param name the name of the model
* @return capitalized model name
*/
@Override
public String toModelName(String name) {
// FIXME parameter should not be assigned. Also declare it as "final"
name = sanitizeName(name);
if (!StringUtils.isEmpty(modelNameSuffix)) { // set model suffix
name = name + "_" + modelNameSuffix;
}
if (!StringUtils.isEmpty(modelNamePrefix)) { // set model prefix
name = modelNamePrefix + "_" + name;
}
// camelize the model name
// phone_number => PhoneNumber
name = camelize(name);
// model name cannot use reserved keyword, e.g. return
if (isReservedWord(name)) {
String modelName = "Model" + name;
LOGGER.warn(name + " (reserved word) cannot be used as model name. Renamed to "
+ modelName);
return modelName;
}
// model name starts with number
if (name.matches("^\\d.*")) {
// e.g. 200Response => Model200Response (after camelize)
String modelName = "Model" + name;
LOGGER.warn(name
+ " (model name starts with number) cannot be used as model name."
+ " Renamed to " + modelName);
return modelName;
}
return name;
}
/**
* Return the capitalized file name of the model.
*
* @param name the model name
* @return the file name of the model
*/
@Override
public String toModelFilename(String name) {
// should be the same as the model name
return toModelName(name);
}
@Override
public String toDefaultValue(Property prop) {
// nil
return null;
}
@Override
public String toInstantiationType(Property prop) {
if (prop instanceof MapProperty) {
MapProperty ap = (MapProperty) prop;
String inner = getSwaggerType(ap.getAdditionalProperties());
return inner;
} else if (prop instanceof ArrayProperty) {
ArrayProperty ap = (ArrayProperty) prop;
String inner = getSwaggerType(ap.getItems());
return "[" + inner + "]";
}
return null;
}
@Override
public String toApiName(String name) {
if (name.length() == 0) {
return "DefaultAPI";
}
return initialCaps(name) + "API";
}
@Override
public String toOperationId(String operationId) {
operationId = camelize(sanitizeName(operationId), true);
// Throw exception if method name is empty.
// This should not happen but keep the check just in case
if (StringUtils.isEmpty(operationId)) {
throw new RuntimeException("Empty method name (operationId) not allowed");
}
// method name cannot use reserved keyword, e.g. return
if (isReservedWord(operationId)) {
String newOperationId = camelize(("call_" + operationId), true);
LOGGER.warn(operationId + " (reserved word) cannot be used as method name."
+ " Renamed to " + newOperationId);
return newOperationId;
}
return operationId;
}
@Override
public String toVarName(String name) {
// sanitize name
name = sanitizeName(name);
// if it's all uppper case, do nothing
if (name.matches("^[A-Z_]*$")) {
return name;
}
// camelize the variable name
// pet_id => petId
name = camelize(name, true);
// for reserved word or word starting with number, append _
if (isReservedWord(name) || name.matches("^\\d.*")) {
name = escapeReservedWord(name);
}
return name;
}
@Override
public String toParamName(String name) {
// sanitize name
name = sanitizeName(name);
// replace - with _ e.g. created-at => created_at
name = name.replaceAll("-", "_");
// if it's all uppper case, do nothing
if (name.matches("^[A-Z_]*$")) {
return name;
}
// camelize(lower) the variable name
// pet_id => petId
name = camelize(name, true);
// for reserved word or word starting with number, append _
if (isReservedWord(name) || name.matches("^\\d.*")) {
name = escapeReservedWord(name);
}
return name;
}
@Override
public CodegenModel fromModel(String name, Model model, Map allDefinitions) {
CodegenModel codegenModel = super.fromModel(name, model, allDefinitions);
if (codegenModel.description != null) {
codegenModel.imports.add("ApiModel");
}
if (allDefinitions != null) {
String parentSchema = codegenModel.parentSchema;
// multilevel inheritance: reconcile properties of all the parents
while (parentSchema != null) {
final Model parentModel = allDefinitions.get(parentSchema);
final CodegenModel parentCodegenModel = super.fromModel(codegenModel.parent,
parentModel,
allDefinitions);
codegenModel = Swift4Codegen.reconcileProperties(codegenModel, parentCodegenModel);
// get the next parent
parentSchema = parentCodegenModel.parentSchema;
}
}
return codegenModel;
}
public void setProjectName(String projectName) {
this.projectName = projectName;
}
public void setUnwrapRequired(boolean unwrapRequired) {
this.unwrapRequired = unwrapRequired;
}
public void setObjcCompatible(boolean objcCompatible) {
this.objcCompatible = objcCompatible;
}
public void setLenientTypeCast(boolean lenientTypeCast) {
this.lenientTypeCast = lenientTypeCast;
}
public void setResponseAs(String[] responseAs) {
this.responseAs = responseAs;
}
public void setSwiftUseApiNamespace(boolean swiftUseApiNamespace) {
this.swiftUseApiNamespace = swiftUseApiNamespace;
}
@Override
public String toEnumValue(String value, String datatype) {
return String.valueOf(value);
}
@Override
public String toEnumDefaultValue(String value, String datatype) {
return datatype + "_" + value;
}
@Override
public String toEnumVarName(String name, String datatype) {
if (name.length() == 0) {
return "empty";
}
Pattern startWithNumberPattern = Pattern.compile("^\\d+");
Matcher startWithNumberMatcher = startWithNumberPattern.matcher(name);
if (startWithNumberMatcher.find()) {
String startingNumbers = startWithNumberMatcher.group(0);
String nameWithoutStartingNumbers = name.substring(startingNumbers.length());
return "_" + startingNumbers + camelize(nameWithoutStartingNumbers, true);
}
// for symbol, e.g. $, #
if (getSymbolName(name) != null) {
return camelize(WordUtils.capitalizeFully(getSymbolName(name).toUpperCase()), true);
}
// Camelize only when we have a structure defined below
Boolean camelized = false;
if (name.matches("[A-Z][a-z0-9]+[a-zA-Z0-9]*")) {
name = camelize(name, true);
camelized = true;
}
// Reserved Name
String nameLowercase = StringUtils.lowerCase(name);
if (isReservedWord(nameLowercase)) {
return escapeReservedWord(nameLowercase);
}
// Check for numerical conversions
if ("Int".equals(datatype) || "Int32".equals(datatype) || "Int64".equals(datatype)
|| "Float".equals(datatype) || "Double".equals(datatype)) {
String varName = "number" + camelize(name);
varName = varName.replaceAll("-", "minus");
varName = varName.replaceAll("\\+", "plus");
varName = varName.replaceAll("\\.", "dot");
return varName;
}
// If we have already camelized the word, don't progress
// any further
if (camelized) {
return name;
}
char[] separators = {'-', '_', ' ', ':', '(', ')'};
return camelize(WordUtils.capitalizeFully(StringUtils.lowerCase(name), separators)
.replaceAll("[-_ :\\(\\)]", ""),
true);
}
@Override
public String toEnumName(CodegenProperty property) {
String enumName = toModelName(property.name);
// Ensure that the enum type doesn't match a reserved word or
// the variable name doesn't match the generated enum type or the
// Swift compiler will generate an error
if (isReservedWord(property.datatypeWithEnum)
|| toVarName(property.name).equals(property.datatypeWithEnum)) {
enumName = property.datatypeWithEnum + "Enum";
}
// TODO: toModelName already does something for names starting with number,
// so this code is probably never called
if (enumName.matches("\\d.*")) { // starts with number
return "_" + enumName;
} else {
return enumName;
}
}
@Override
public Map postProcessModels(Map objs) {
Map postProcessedModelsEnum = postProcessModelsEnum(objs);
// We iterate through the list of models, and also iterate through each of the
// properties for each model. For each property, if:
//
// CodegenProperty.name != CodegenProperty.baseName
//
// then we set
//
// CodegenProperty.vendorExtensions["x-codegen-escaped-property-name"] = true
//
// Also, if any property in the model has x-codegen-escaped-property-name=true, then we mark:
//
// CodegenModel.vendorExtensions["x-codegen-has-escaped-property-names"] = true
//
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