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package io.swagger.codegen.languages;
import io.swagger.codegen.*;
import io.swagger.models.properties.ArrayProperty;
import io.swagger.models.properties.MapProperty;
import io.swagger.models.properties.Property;
import io.swagger.models.parameters.Parameter;
import io.swagger.models.Swagger;
import io.swagger.util.Yaml;
import java.util.*;
import org.apache.commons.lang3.StringUtils;
import com.fasterxml.jackson.core.JsonProcessingException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class AbstractGoCodegen extends DefaultCodegen implements CodegenConfig {
protected static Logger LOGGER = LoggerFactory.getLogger(AbstractGoCodegen.class);
protected boolean withXml = false;
protected String packageName = "swagger";
public AbstractGoCodegen() {
super();
hideGenerationTimestamp = Boolean.FALSE;
defaultIncludes = new HashSet(
Arrays.asList(
"map",
"array")
);
languageSpecificPrimitives = new HashSet(
Arrays.asList(
"string",
"bool",
"uint",
"uint32",
"uint64",
"int",
"int32",
"int64",
"float32",
"float64",
"complex64",
"complex128",
"rune",
"interface{}",
"byte")
);
instantiationTypes.clear();
/*instantiationTypes.put("array", "GoArray");
instantiationTypes.put("map", "GoMap");*/
typeMapping.clear();
typeMapping.put("integer", "int32");
typeMapping.put("long", "int64");
typeMapping.put("number", "float32");
typeMapping.put("float", "float32");
typeMapping.put("double", "float64");
typeMapping.put("boolean", "bool");
typeMapping.put("string", "string");
typeMapping.put("UUID", "string");
typeMapping.put("date", "string");
typeMapping.put("DateTime", "time.Time");
typeMapping.put("password", "string");
typeMapping.put("File", "*os.File");
typeMapping.put("file", "*os.File");
// map binary to string as a workaround
// the correct solution is to use []byte
typeMapping.put("binary", "string");
typeMapping.put("ByteArray", "string");
typeMapping.put("object", "interface{}");
typeMapping.put("UUID", "string");
importMapping = new HashMap();
cliOptions.clear();
cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "Go package name (convention: lowercase).")
.defaultValue("swagger"));
cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
.defaultValue(Boolean.TRUE.toString()));
}
/**
* 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) {
// Can't start with an underscore, as our fields need to start with an
// UppercaseLetter so that Go treats them as public/visible.
// Options?
// - MyName
// - AName
// - TheName
// - XName
// - X_Name
// ... or maybe a suffix?
// - Name_ ... think this will work.
if (this.reservedWordsMappings().containsKey(name)) {
return this.reservedWordsMappings().get(name);
}
return camelize(name) + '_';
}
@Override
public String toVarName(String name) {
// replace - with _ e.g. created-at => created_at
name = sanitizeName(name.replaceAll("-", "_"));
// if it's all uppper case, do nothing
if (name.matches("^[A-Z_]*$"))
return name;
// camelize (lower first character) the variable name
// pet_id => PetId
name = camelize(name);
// for reserved word or word starting with number, append _
if (isReservedWord(name))
name = escapeReservedWord(name);
// for reserved word or word starting with number, append _
if (name.matches("^\\d.*"))
name = "Var" + name;
return name;
}
@Override
public String toParamName(String name) {
// params should be lowerCamelCase. E.g. "person Person", instead of
// "Person Person".
//
// REVISIT: Actually, for idiomatic go, the param name should
// really should just be a letter, e.g. "p Person"), but we'll get
// around to that some other time... Maybe.
return camelize(toVarName(name), true);
}
@Override
public String toModelName(String name) {
// camelize the model name
// phone_number => PhoneNumber
return camelize(toModel(name));
}
@Override
public String toModelFilename(String name) {
return toModel("model_" + name);
}
public String toModel(String name) {
if (!StringUtils.isEmpty(modelNamePrefix)) {
name = modelNamePrefix + "_" + name;
}
if (!StringUtils.isEmpty(modelNameSuffix)) {
name = name + "_" + modelNameSuffix;
}
name = sanitizeName(name);
// model name cannot use reserved keyword, e.g. return
if (isReservedWord(name)) {
LOGGER.warn(name + " (reserved word) cannot be used as model name. Renamed to " + ("model_" + name));
name = "model_" + name; // e.g. return => ModelReturn (after camelize)
}
// model name starts with number
if (name.matches("^\\d.*")) {
LOGGER.warn(name + " (model name starts with number) cannot be used as model name. Renamed to "
+ ("model_" + name));
name = "model_" + name; // e.g. 200Response => Model200Response (after camelize)
}
return underscore(name);
}
@Override
public String toApiFilename(String name) {
// replace - with _ e.g. created-at => created_at
name = name.replaceAll("-", "_"); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
// e.g. PetApi.go => pet_api.go
return "api_" + underscore(name);
}
/**
* Overrides postProcessParameter to add a vendor extension "x-exportParamName".
* This is useful when paramName starts with a lowercase letter, but we need that
* param to be exportable (starts with an Uppercase letter).
*
* @param parameter CodegenParameter object to be processed.
*/
@Override
public void postProcessParameter(CodegenParameter parameter) {
// Give the base class a chance to process
super.postProcessParameter(parameter);
char nameFirstChar = parameter.paramName.charAt(0);
if (Character.isUpperCase(nameFirstChar)) {
// First char is already uppercase, just use paramName.
parameter.vendorExtensions.put("x-exportParamName", parameter.paramName);
} else {
// It's a lowercase first char, let's convert it to uppercase
StringBuilder sb = new StringBuilder(parameter.paramName);
sb.setCharAt(0, Character.toUpperCase(nameFirstChar));
parameter.vendorExtensions.put("x-exportParamName", sb.toString());
}
}
@Override
public String getTypeDeclaration(Property p) {
if (p instanceof ArrayProperty) {
ArrayProperty ap = (ArrayProperty) p;
Property inner = ap.getItems();
return "[]" + getTypeDeclaration(inner);
} else if (p instanceof MapProperty) {
MapProperty mp = (MapProperty) p;
Property inner = mp.getAdditionalProperties();
return getSwaggerType(p) + "[string]" + getTypeDeclaration(inner);
}
//return super.getTypeDeclaration(p);
// Not using the supertype invocation, because we want to UpperCamelize
// the type.
String swaggerType = getSwaggerType(p);
if (typeMapping.containsKey(swaggerType)) {
return typeMapping.get(swaggerType);
}
if (typeMapping.containsValue(swaggerType)) {
return swaggerType;
}
if (languageSpecificPrimitives.contains(swaggerType)) {
return swaggerType;
}
return toModelName(swaggerType);
}
@Override
public String getSwaggerType(Property p) {
String swaggerType = super.getSwaggerType(p);
String type = null;
if (typeMapping.containsKey(swaggerType)) {
type = typeMapping.get(swaggerType);
if (languageSpecificPrimitives.contains(type))
return (type);
} else
type = swaggerType;
return type;
}
@Override
public String toOperationId(String operationId) {
String sanitizedOperationId = sanitizeName(operationId);
// method name cannot use reserved keyword, e.g. return
if (isReservedWord(sanitizedOperationId)) {
LOGGER.warn(operationId + " (reserved word) cannot be used as method name. Renamed to "
+ camelize("call_" + operationId));
sanitizedOperationId = "call_" + sanitizedOperationId;
}
return camelize(sanitizedOperationId);
}
@Override
public Map postProcessOperations(Map objs) {
@SuppressWarnings("unchecked")
Map objectMap = (Map) objs.get("operations");
@SuppressWarnings("unchecked")
List operations = (List) objectMap.get("operation");
for (CodegenOperation operation : operations) {
// http method verb conversion (e.g. PUT => Put)
operation.httpMethod = camelize(operation.httpMethod.toLowerCase());
}
// remove model imports to avoid error
List> imports = (List>) objs.get("imports");
if (imports == null)
return objs;
Iterator> iterator = imports.iterator();
while (iterator.hasNext()) {
String _import = iterator.next().get("import");
if (_import.startsWith(apiPackage()))
iterator.remove();
}
// this will only import "fmt" if there are items in pathParams
for (CodegenOperation operation : operations) {
if (operation.pathParams != null && operation.pathParams.size() > 0) {
imports.add(createMapping("import", "fmt"));
break; //just need to import once
}
}
boolean addedOptionalImport = false;
boolean addedTimeImport = false;
boolean addedOSImport = false;
for (CodegenOperation operation : operations) {
for (CodegenParameter param : operation.allParams) {
// import "os" if the operation uses files
if (!addedOSImport && param.dataType == "*os.File") {
imports.add(createMapping("import", "os"));
addedOSImport = true;
}
// import "time" if the operation has a required time parameter.
if (param.required) {
if (!addedTimeImport && param.dataType == "time.Time") {
imports.add(createMapping("import", "time"));
addedTimeImport = true;
}
}
// import "optionals" package if the parameter is primitive and optional
if (!param.required && param.isPrimitiveType) {
if (!addedOptionalImport) {
imports.add(createMapping("import", "github.com/antihax/optional"));
addedOptionalImport = true;
}
// We need to specially map Time type to the optionals package
if (param.dataType == "time.Time") {
param.vendorExtensions.put("x-optionalDataType", "Time");
continue;
}
// Map optional type to dataType
param.vendorExtensions.put("x-optionalDataType",
param.dataType.substring(0, 1).toUpperCase() + param.dataType.substring(1));
}
}
}
// recursively add import for mapping one type to multiple imports
List> recursiveImports = (List>) objs.get("imports");
if (recursiveImports == null)
return objs;
ListIterator> listIterator = imports.listIterator();
while (listIterator.hasNext()) {
String _import = listIterator.next().get("import");
// if the import package happens to be found in the importMapping (key)
// add the corresponding import package to the list
if (importMapping.containsKey(_import)) {
listIterator.add(createMapping("import", importMapping.get(_import)));
}
}
return objs;
}
@Override
public Map postProcessModels(Map objs) {
// remove model imports to avoid error
List> imports = (List>) objs.get("imports");
final String prefix = modelPackage();
Iterator> iterator = imports.iterator();
while (iterator.hasNext()) {
String _import = iterator.next().get("import");
if (_import.startsWith(prefix))
iterator.remove();
}
boolean addedTimeImport = false;
boolean addedOSImport = false;
List> models = (List>) objs.get("models");
for (Map m : models) {
Object v = m.get("model");
if (v instanceof CodegenModel) {
CodegenModel model = (CodegenModel) v;
for (CodegenProperty param : model.vars) {
if (!addedTimeImport && param.baseType == "time.Time") {
imports.add(createMapping("import", "time"));
addedTimeImport = true;
}
if (!addedOSImport && param.baseType == "*os.File") {
imports.add(createMapping("import", "os"));
addedOSImport = true;
}
}
}
}
// recursively add import for mapping one type to multiple imports
List> recursiveImports = (List>) objs.get("imports");
if (recursiveImports == null)
return objs;
ListIterator> listIterator = imports.listIterator();
while (listIterator.hasNext()) {
String _import = listIterator.next().get("import");
// if the import package happens to be found in the importMapping (key)
// add the corresponding import package to the list
if (importMapping.containsKey(_import)) {
listIterator.add(createMapping("import", importMapping.get(_import)));
}
}
return postProcessModelsEnum(objs);
}
@Override
public Map postProcessSupportingFileData(Map objs) {
Swagger swagger = (Swagger) objs.get("swagger");
if (swagger != null) {
try {
objs.put("swagger-yaml", Yaml.mapper().writeValueAsString(swagger));
} catch (JsonProcessingException e) {
LOGGER.error(e.getMessage(), e);
}
}
return super.postProcessSupportingFileData(objs);
}
@Override
protected boolean needToImport(String type) {
return !defaultIncludes.contains(type) && !languageSpecificPrimitives.contains(type);
}
public void setPackageName(String packageName) {
this.packageName = packageName;
}
@Override
public String escapeQuotationMark(String input) {
// remove " to avoid code injection
return input.replace("\"", "");
}
@Override
public String escapeUnsafeCharacters(String input) {
return input.replace("*/", "*_/").replace("/*", "/_*");
}
public Map createMapping(String key, String value) {
Map customImport = new HashMap();
customImport.put(key, value);
return customImport;
}
@Override
public String toEnumValue(String value, String datatype) {
if ("int".equals(datatype) || "int32".equals(datatype) || "int64".equals(datatype)
|| "uint".equals(datatype) || "uint32".equals(datatype) || "uint64".equals(datatype)
|| "float".equals(datatype) || "float32".equals(datatype) || "float64".equals(datatype)
|| "boolean".equals(datatype) || "double".equals(datatype)) {
return value;
} else if ("string".equals(datatype)) {
return String.format("\"%s\"", value);
} else {
return escapeText(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";
}
// number
if ("int".equals(datatype) || "int32".equals(datatype) || "int64".equals(datatype)
|| "uint".equals(datatype) || "uint32".equals(datatype) || "uint64".equals(datatype)
|| "float".equals(datatype) || "float32".equals(datatype) || "float64".equals(datatype)) {
String varName = "NUMBER_" + name;
varName = varName.replaceAll("-", "MINUS_");
varName = varName.replaceAll("\\+", "PLUS_");
varName = varName.replaceAll("\\.", "_DOT_");
return varName;
}
// for symbol, e.g. $, #
if (getSymbolName(name) != null) {
return getSymbolName(name).toUpperCase();
}
// string
String enumName = sanitizeName(underscore(name).toUpperCase());
enumName = enumName.replaceFirst("^_", "");
enumName = enumName.replaceFirst("_$", "");
// starts with a number
if (enumName.matches("\\d.*")) {
enumName = "_" + enumName;
}
// reserved word
if (isReservedWord(enumName)) {
return escapeReservedWord(enumName);
} else {
return enumName;
}
}
@Override
public String toEnumName(CodegenProperty property) {
String enumName = underscore(toModelName(property.name)).toUpperCase();
// remove [] for array or map of enum
enumName = enumName.replace("[]", "");
if (enumName.matches("\\d.*")) { // starts with number
return "_" + enumName;
} else {
return enumName;
}
}
public void setWithXml(boolean withXml) {
this.withXml = withXml;
}
}
