[R] Add new R client generator (#6351)

* add r client codegen

* update r api, model templates

* various fix

* rename Json to JSON

* more enhancements

* fix json handling

* add file upload support, var name to handle hyphen

* use httr::upload_file

bin/r-petstore.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+SCRIPT="$0"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/swagger-codegen-cli/target/swagger-codegen-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -t modules/swagger-codegen/src/main/resources/r -i modules/swagger-codegen/src/test/resources/2_0/petstore.yaml -l r -o samples/client/petstore/r_test -DpackageName=petstore $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/windows/r-petstore.bat

@@ -0,0 +1,10 @@
+set executable=.\modules\swagger-codegen-cli\target\swagger-codegen-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M -DloggerPath=conf/log4j.properties
+set ags=generate -i modules\swagger-codegen\src\test\resources\2_0\petstore.yaml -l r -o samples\client\petstore\r
+
+java %JAVA_OPTS% -jar %executable% %ags%

modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenParameter.java

@@ -14,7 +14,7 @@ public class CodegenParameter {
 
     public String example; // example value (x-example)
     public String jsonSchema;
-    public boolean isString, isInteger, isLong, isFloat, isDouble, isByteArray, isBinary, isBoolean, isDate, isDateTime, isUuid;
+    public boolean isString, isNumeric, isInteger, isLong, isFloat, isDouble, isByteArray, isBinary, isBoolean, isDate, isDateTime, isUuid;
     public boolean isListContainer, isMapContainer;
     public boolean isFile, notFile;
     public boolean isEnum;
@@ -133,6 +133,7 @@ public class CodegenParameter {
         output.isBinary = this.isBinary;
         output.isByteArray = this.isByteArray;
         output.isString = this.isString;
+        output.isNumeric = this.isNumeric;
         output.isInteger = this.isInteger;
         output.isLong = this.isLong;
         output.isDouble = this.isDouble;
@@ -210,6 +211,8 @@ public class CodegenParameter {
             return false;
         if (isString != that.isString)
             return false;
+        if (isNumeric != that.isNumeric)
+            return false;
         if (isInteger != that.isInteger)
             return false;
         if (isLong != that.isLong)
@@ -299,6 +302,7 @@ public class CodegenParameter {
         result = 31 * result + (example != null ? example.hashCode() : 0);
         result = 31 * result + (jsonSchema != null ? jsonSchema.hashCode() : 0);
         result = 31 * result + (isString ? 13:31);
+        result = 31 * result + (isNumeric ? 13:31);
         result = 31 * result + (isInteger ? 13:31);
         result = 31 * result + (isLong ? 13:31);
         result = 31 * result + (isFloat ? 13:31);

modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenProperty.java

@@ -39,7 +39,7 @@ public class CodegenProperty implements Cloneable {
     public boolean hasMore, required, secondaryParam;
     public boolean hasMoreNonReadOnly; // for model constructor, true if next properyt is not readonly
     public boolean isPrimitiveType, isContainer, isNotContainer;
-    public boolean isString, isInteger, isLong, isFloat, isDouble, isByteArray, isBinary, isFile, isBoolean, isDate, isDateTime, isUuid;
+    public boolean isString, isNumeric, isInteger, isLong, isFloat, isDouble, isByteArray, isBinary, isFile, isBoolean, isDate, isDateTime, isUuid;
     public boolean isListContainer, isMapContainer;
     public boolean isEnum;
     public boolean isReadOnly = false;
@@ -115,6 +115,7 @@ public class CodegenProperty implements Cloneable {
         result = prime * result + ((vendorExtensions == null) ? 0 : vendorExtensions.hashCode());
         result = prime * result + ((hasValidation  ? 13:31));
         result = prime * result + ((isString  ? 13:31));
+        result = prime * result + ((isNumeric ? 13:31));
         result = prime * result + ((isInteger ? 13:31));
         result = prime * result + ((isLong  ?13:31));
         result = prime * result + ((isFloat ? 13:31));
@@ -261,6 +262,9 @@ public class CodegenProperty implements Cloneable {
             return false;
         }
 
+        if (this.isNumeric != other.isNumeric) {
+            return false;
+        }
         if (this.isInteger != other.isInteger) {
             return false;
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenResponse.java

@@ -11,7 +11,7 @@ public class CodegenResponse {
     public List<Map<String, Object>> examples;
     public String dataType, baseType, containerType;
     public boolean hasHeaders;
-    public boolean isString, isInteger, isLong, isFloat, isDouble, isByteArray, isBoolean, isDate, isDateTime, isUuid;
+    public boolean isString, isNumeric, isInteger, isLong, isFloat, isDouble, isByteArray, isBoolean, isDate, isDateTime, isUuid;
     public boolean isDefault;
     public boolean simpleType;
     public boolean primitiveType;
@@ -69,12 +69,13 @@ public class CodegenResponse {
             return false;
         if (isFile != that.isFile)
             return false;
+        if (isNumeric != that.isNumeric)
+            return false;
         if (schema != null ? !schema.equals(that.schema) : that.schema != null)
             return false;
         if (vendorExtensions != null ? !vendorExtensions.equals(that.vendorExtensions) : that.vendorExtensions != null)
             return false;
         return jsonSchema != null ? jsonSchema.equals(that.jsonSchema) : that.jsonSchema == null;
-
     }
 
     @Override
@@ -88,6 +89,7 @@ public class CodegenResponse {
         result = 31 * result + (baseType != null ? baseType.hashCode() : 0);
         result = 31 * result + (containerType != null ? containerType.hashCode() : 0);
         result = 31 * result + (isDefault ? 13:31);
+        result = 31 * result + (isNumeric ? 13:31);
         result = 31 * result + (simpleType ? 13:31);
         result = 31 * result + (primitiveType ? 13:31);
         result = 31 * result + (isMapContainer ? 13:31);

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -1647,19 +1647,7 @@ public class DefaultCodegen {
         if (p instanceof BaseIntegerProperty && !(p instanceof IntegerProperty) && !(p instanceof LongProperty)) {
             BaseIntegerProperty sp = (BaseIntegerProperty) p;
             property.isInteger = true;
-            /*if (sp.getEnum() != null) {
+            property.isNumeric = true;
-                List<Integer> _enum = sp.getEnum();
-                property._enum = new ArrayList<String>();
-                for(Integer i : _enum) {
-                  property._enum.add(i.toString());
-                }
-                property.isEnum = true;
-
-                // legacy support
-                Map<String, Object> allowableValues = new HashMap<String, Object>();
-                allowableValues.put("values", _enum);
-                property.allowableValues = allowableValues;
-            }*/
         }
         if (p instanceof IntegerProperty) {
             IntegerProperty sp = (IntegerProperty) p;
@@ -1681,6 +1669,7 @@ public class DefaultCodegen {
         if (p instanceof LongProperty) {
             LongProperty sp = (LongProperty) p;
             property.isLong = true;
+            property.isNumeric = true;
             if (sp.getEnum() != null) {
                 List<Long> _enum = sp.getEnum();
                 property._enum = new ArrayList<String>();
@@ -1734,6 +1723,7 @@ public class DefaultCodegen {
         if (p instanceof DoubleProperty) {
             DoubleProperty sp = (DoubleProperty) p;
             property.isDouble = true;
+            property.isNumeric = true;
             if (sp.getEnum() != null) {
                 List<Double> _enum = sp.getEnum();
                 property._enum = new ArrayList<String>();
@@ -1751,6 +1741,7 @@ public class DefaultCodegen {
         if (p instanceof FloatProperty) {
             FloatProperty sp = (FloatProperty) p;
             property.isFloat = true;
+            property.isNumeric = true;
             if (sp.getEnum() != null) {
                 List<Float> _enum = sp.getEnum();
                 property._enum = new ArrayList<String>();
@@ -2385,12 +2376,16 @@ public class DefaultCodegen {
                 r.isBoolean = true;
             } else if (Boolean.TRUE.equals(cm.isLong)) {
                 r.isLong = true;
+                r.isNumeric = true;
             } else if (Boolean.TRUE.equals(cm.isInteger)) {
                 r.isInteger = true;
+                r.isNumeric = true;
             } else if (Boolean.TRUE.equals(cm.isDouble)) {
                 r.isDouble = true;
+                r.isNumeric = true;
             } else if (Boolean.TRUE.equals(cm.isFloat)) {
                 r.isFloat = true;
+                r.isNumeric = true;
             } else if (Boolean.TRUE.equals(cm.isByteArray)) {
                 r.isByteArray = true;
             } else if (Boolean.TRUE.equals(cm.isBinary)) {

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/RClientCodegen.java

@@ -0,0 +1,450 @@
+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 java.io.File;
+import java.util.*;
+
+import org.apache.commons.lang3.StringUtils;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class RClientCodegen extends DefaultCodegen implements CodegenConfig {
+    static Logger LOGGER = LoggerFactory.getLogger(RClientCodegen.class);
+
+    protected String packageName = "swagger";
+    protected String packageVersion = "1.0.0";
+    protected String apiDocPath = "docs/";
+    protected String modelDocPath = "docs/";
+
+    public CodegenType getTag() {
+        return CodegenType.CLIENT;
+    }
+
+    public String getName() {
+        return "r";
+    }
+
+    public String getHelp() {
+        return "Generates a R client library (beta).";
+    }
+
+    public RClientCodegen() {
+        super();
+        outputFolder = "generated-code/r";
+        modelTemplateFiles.put("model.mustache", ".r");
+        apiTemplateFiles.put("api.mustache", ".r");
+
+        modelDocTemplateFiles.put("model_doc.mustache", ".md");
+        apiDocTemplateFiles.put("api_doc.mustache", ".md");
+
+        embeddedTemplateDir = templateDir = "r";
+
+        setReservedWordsLowerCase(
+            Arrays.asList(
+                // reserved words: https://stat.ethz.ch/R-manual/R-devel/library/base/html/Reserved.html
+                "if", "else", "repeat", "while", "function", "for", "in",
+                "next", "break", "TRUE", "FALSE", "NULL", "Inf", "NaN",
+                "NA", "NA_integer_", "NA_real_", "NA_complex_", "NA_character_"
+            )
+        );
+
+        defaultIncludes = new HashSet<String>(
+                Arrays.asList(
+                    "map",
+                    "array")
+                );
+
+        languageSpecificPrimitives = new HashSet<String>(
+            Arrays.asList(
+                "Integer",
+                "Numeric",
+                "Character")
+            );
+
+        instantiationTypes.clear();
+
+        typeMapping.clear();
+        typeMapping.put("integer", "Integer");
+        typeMapping.put("long", "Integer");
+        typeMapping.put("number", "Numeric");
+        typeMapping.put("float", "Numeric");
+        typeMapping.put("double", "Numeric");
+        typeMapping.put("boolean", "Character");
+        typeMapping.put("string", "Character");
+        typeMapping.put("UUID", "Character");
+        typeMapping.put("date", "Character");
+        typeMapping.put("DateTime", "Character");
+        typeMapping.put("password", "Character");
+        typeMapping.put("file", "TODO_FILE_MAPPING");
+        // map binary to string as a workaround
+        // the correct solution is to use []byte
+        typeMapping.put("binary", "Character");
+        typeMapping.put("ByteArray", "Character");
+        typeMapping.put("object", "TODO_OBJECT_MAPPING");
+
+        cliOptions.clear();
+        cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "R package name (convention: lowercase).")
+                .defaultValue("swagger"));
+        cliOptions.add(new CliOption(CodegenConstants.PACKAGE_VERSION, "R package version.")
+                .defaultValue("1.0.0"));
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+                .defaultValue(Boolean.TRUE.toString()));
+
+    }
+
+    @Override
+    public void processOpts() {
+        super.processOpts();
+
+        // default HIDE_GENERATION_TIMESTAMP to true
+        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
+            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
+        } else {
+            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
+                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
+            setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
+        } else {
+            setPackageName("swagger");
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_VERSION)) {
+            setPackageVersion((String) additionalProperties.get(CodegenConstants.PACKAGE_VERSION));
+        } else {
+            setPackageVersion("1.0.0");
+        }
+
+        additionalProperties.put(CodegenConstants.PACKAGE_NAME, packageName);
+        additionalProperties.put(CodegenConstants.PACKAGE_VERSION, packageVersion);
+
+        additionalProperties.put("apiDocPath", apiDocPath);
+        additionalProperties.put("modelDocPath", modelDocPath);
+
+        apiTestTemplateFiles.clear(); // TODO: add api test template
+        modelTestTemplateFiles.clear(); // TODO: add model test template
+
+        apiDocTemplateFiles.clear(); // TODO: add api doc template
+        modelDocTemplateFiles.clear(); // TODO: add model doc template
+
+        modelPackage = packageName;
+        apiPackage = packageName;
+
+        supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+        supportingFiles.add(new SupportingFile("git_push.sh.mustache", "", "git_push.sh"));
+        supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
+        supportingFiles.add(new SupportingFile("description.mustache", "", "DESCRIPTION"));
+        supportingFiles.add(new SupportingFile("Rbuildignore.mustache", "", ".Rbuildignore"));
+        supportingFiles.add(new SupportingFile(".travis.yml", "", ".travis.yml"));
+    }
+
+    @Override
+    public String escapeReservedWord(String name)
+    {
+        // Can't start with an underscore, as our fields need to start with an
+        // UppercaseLetter so that R 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 apiFileFolder() {
+        return outputFolder + File.separator + "R" + File.separator;
+    }
+
+    public String modelFileFolder() {
+        return outputFolder + File.separator + "R" + File.separator;
+    }
+
+    @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;
+
+        // convert variable name to snake case
+        // PetId => pet_id
+        name = underscore(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) {
+        return toVarName(name);
+    }
+
+    @Override
+    public String toModelName(String name) {
+        return toModelFilename(name);
+    }
+
+    @Override
+    public String toModelFilename(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 " + camelize("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 " + camelize("model_" + name));
+            name = "model_" + name; // e.g. 200Response => Model200Response (after camelize)
+        }
+
+        return camelize(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.r => pet_api.r
+        return camelize(name + "_api");
+    }
+
+    @Override
+    public String apiDocFileFolder() {
+        return (outputFolder + "/" + apiDocPath).replace('/', File.separatorChar);
+    }
+
+    @Override
+    public String modelDocFileFolder() {
+        return (outputFolder + "/" + modelDocPath).replace('/', File.separatorChar);
+    }
+
+    @Override
+    public String toModelDocFilename(String name) {
+        return toModelName(name);
+    }
+
+    @Override
+    public String toApiDocFilename(String name) {
+        return toApiName(name);
+    }
+
+    @Override
+    public String toApiName(String name) {
+        return camelize(super.toApiName(name));
+    }
+
+    @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 getTypeDeclaration(inner);
+        }
+
+        // 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 " + underscore("call_" + operationId));
+            sanitizedOperationId = "call_" + sanitizedOperationId;
+        }
+
+        return underscore(sanitizedOperationId);
+    }
+
+    @Override
+    public Map<String, Object> postProcessModels(Map<String, Object> objs) {
+        // remove model imports to avoid error
+        List<Map<String, String>> imports = (List<Map<String, String>>) objs.get("imports");
+        final String prefix = modelPackage();
+        Iterator<Map<String, String>> iterator = imports.iterator();
+        while (iterator.hasNext()) {
+            String _import = iterator.next().get("import");
+            if (_import.startsWith(prefix))
+                iterator.remove();
+        }
+
+        // recursively add import for mapping one type to multiple imports
+        List<Map<String, String>> recursiveImports = (List<Map<String, String>>) objs.get("imports");
+        if (recursiveImports == null)
+            return objs;
+
+        ListIterator<Map<String, String>> 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
+    protected boolean needToImport(String type) {
+        return !defaultIncludes.contains(type)
+            && !languageSpecificPrimitives.contains(type);
+    }
+
+    public void setPackageName(String packageName) {
+        this.packageName = packageName;
+    }
+
+    public void setPackageVersion(String packageVersion) {
+        this.packageVersion = packageVersion;
+    }
+
+    @Override
+    public String escapeQuotationMark(String input) {
+        // remove " to avoid code injection
+        return input.replace("\"", "");
+    }
+
+    @Override
+    public String escapeUnsafeCharacters(String input) {
+        return input.replace("]]", "] ]");
+    }
+
+    public Map<String, String> createMapping(String key, String value){
+        Map<String, String> customImport = new HashMap<String, String>();
+        customImport.put(key, value);
+
+        return customImport;
+    }
+
+    @Override
+    public String toEnumValue(String value, String datatype) {
+        if ("int".equals(datatype) || "double".equals(datatype) || "float".equals(datatype)) {
+            return 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) || "double".equals(datatype) || "float".equals(datatype)) {
+            String varName = name;
+            varName = varName.replaceAll("-", "MINUS_");
+            varName = varName.replaceAll("\\+", "PLUS_");
+            varName = varName.replaceAll("\\.", "_DOT_");
+            return varName;
+        }
+
+        // for symbol, e.g. $, #
+        if (getSymbolName(name) != null) {
+            return getSymbolName(name).toUpperCase();
+        }
+
+        // string
+        String enumName = sanitizeName(underscore(name).toUpperCase());
+        enumName = enumName.replaceFirst("^_", "");
+        enumName = enumName.replaceFirst("_$", "");
+
+        if (isReservedWord(enumName) || enumName.matches("\\d.*")) { // reserved word or starts with number
+            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;
+        }
+    }
+}

modules/swagger-codegen/src/main/resources/META-INF/services/io.swagger.codegen.CodegenConfig

@@ -50,6 +50,7 @@ io.swagger.codegen.languages.PowerShellClientCodegen
 io.swagger.codegen.languages.PistacheServerCodegen
 io.swagger.codegen.languages.PythonClientCodegen
 io.swagger.codegen.languages.Qt5CPPGenerator
+io.swagger.codegen.languages.RClientCodegen
 io.swagger.codegen.languages.Rails5ServerCodegen
 io.swagger.codegen.languages.RestbedCodegen
 io.swagger.codegen.languages.RubyClientCodegen

modules/swagger-codegen/src/main/resources/r/.travis.yml

@@ -0,0 +1,3 @@
+# ref: https://docs.travis-ci.com/user/languages/r/
+language: r
+cache: packages

modules/swagger-codegen/src/main/resources/r/README.mustache

@@ -0,0 +1,27 @@
+# R API client for {{packageName}}
+
+{{#appDescription}}
+{{{appDescription}}}
+{{/appDescription}}
+
+## Overview
+This API client was generated by the [swagger-codegen](https://github.com/swagger-api/swagger-codegen) project. By using the [OpenAPI/Swagger spec](https://github.com/swagger-api/swagger-spec) from a remote server, you can easily generate an API client.
+
+- API version: {{appVersion}}
+- Package version: {{packageVersion}}
+{{^hideGenerationTimestamp}}
+- Build date: {{generatedDate}}
+{{/hideGenerationTimestamp}}
+- Build package: {{generatorClass}}
+{{#infoUrl}}
+For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
+{{/infoUrl}}
+
+## Installation
+
+TODO
+
+## Author
+
+{{#apiInfo}}{{#apis}}{{^hasMore}}{{infoEmail}}
+{{/hasMore}}{{/apis}}{{/apiInfo}}

modules/swagger-codegen/src/main/resources/r/Rbuildignore.mustache

@@ -0,0 +1,2 @@
+^.*\.Rproj$
+^\.Rproj\.user$

modules/swagger-codegen/src/main/resources/r/api.mustache

@@ -0,0 +1,60 @@
+{{>partial_header}}
+{{#operations}}
+{{classname}} <- R6::R6Class(
+  '{{classname}}',
+  public = list(
+    userAgent = "{{#httpUserAgent}}{{{.}}}{{/httpUserAgent}}{{^httpUserAgent}}Swagger-Codegen/{{{packageVersion}}}/r{{/httpUserAgent}}",
+    basePath = "{{{basePath}}}",
+    initialize = function(basePath){
+      if (!missing(basePath)) {
+        stopifnot(is.character(basePath), length(basePath) == 1)
+        self$basePath <- basePath
+      }
+    },
+
+    {{#operation}}
+    {{operationId}} = function({{#allParams}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}){
+      resp <- httr::{{httpMethod}}(paste0(self$basePath{{#pathParams}}, {{paramName}}{{/pathParams}}),
+          httr::add_headers("User-Agent" = self$userAgent{{#hasConsumes}}, "accept" = "{{#consumes}}{{#-first}}{{{mediaType}}}{{/-first}}{{/consumes}}"{{/hasConsumes}}{{#hasProduces}}, "content-type" = "{{#produces}}{{#-first}}{{{mediaType}}}{{/-first}}{{/produces}}"{{/hasProduces}}{{#headerParams}}, "{{baseName}}" = {{paramName}}{{/headerParams}})
+          {{#hasFormParams}}
+          ,body = list(
+            {{#formParams}}
+              {{^isFile}}
+              "{{baseName}}" = {{paramName}}{{#hasMore}},{{/hasMore}}
+              {{/isFile}}
+              {{#isFile}}
+              "{{baseName}}" = httr::upload_file({{paramName}}){{#hasMore}},{{/hasMore}}
+              {{/isFile}}
+            {{/formParams}}
+            )
+          {{/hasFormParams}}
+          {{#bodyParams}}
+          ,body = {{paramName}}$toJSON()
+          {{/bodyParams}}
+          {{#hasQueryParams}}
+          ,query = list(
+            {{#queryParams}}
+            "{{baseName}}" = {{paramName}}{{#hasMore}},{{/hasMore}}
+            {{/queryParams}}
+          {{/hasQueryParams}}
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        {{#returnType}} 
+        result <- {{returnType}}$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+        {{/returnType}}
+        {{^returnType}}
+        # void response, no need to return anything
+        {{/returnType}}
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    }{{#hasMore}},{{/hasMore}}
+    {{/operation}}
+  )
+) 
+{{/operations}}

modules/swagger-codegen/src/main/resources/r/api_doc.mustache

@@ -0,0 +1,50 @@
+# {{invokerPackage}}\{{classname}}{{#description}}
+{{description}}{{/description}}
+
+All URIs are relative to *{{basePath}}*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+{{#operations}}{{#operation}}[**{{operationId}}**]({{classname}}.md#{{operationId}}) | **{{httpMethod}}** {{path}} | {{#summary}}{{summary}}{{/summary}}
+{{/operation}}{{/operations}}
+
+{{#operations}}
+{{#operation}}
+# **{{{operationId}}}**
+> {{#returnType}}{{{returnType}}} {{/returnType}}{{{operationId}}}({{#authMethods}}ctx, {{/authMethods}}{{#allParams}}{{#required}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/required}}{{/allParams}}{{#hasOptionalParams}}optional{{/hasOptionalParams}})
+{{{summary}}}{{#notes}}
+
+{{{notes}}}{{/notes}}
+
+### Required Parameters
+{{^allParams}}This endpoint does not need any parameter.{{/allParams}}{{#allParams}}{{#-last}}
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------{{#authMethods}}
+ **ctx** | **context.Context** | context containing the authentication | nil if no authentication{{/authMethods}}{{/-last}}{{/allParams}}{{#allParams}}{{#required}}
+  **{{paramName}}** | {{#isFile}}**{{dataType}}**{{/isFile}}{{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{^isFile}}[**{{dataType}}**]({{baseType}}.md){{/isFile}}{{/isPrimitiveType}}| {{description}} | {{#defaultValue}}[default to {{defaultValue}}]{{/defaultValue}}{{/required}}{{/allParams}}{{#hasOptionalParams}}
+ **optional** | **map[string]interface{}** | optional parameters | nil if no parameters
+
+### Optional Parameters
+Optional parameters are passed through a map[string]interface{}.
+{{#allParams}}{{#-last}}
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------{{/-last}}{{/allParams}}{{#allParams}}
+ **{{paramName}}** | {{#isFile}}**{{dataType}}**{{/isFile}}{{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{^isFile}}[**{{dataType}}**]({{baseType}}.md){{/isFile}}{{/isPrimitiveType}}| {{description}} | {{#defaultValue}}[default to {{defaultValue}}]{{/defaultValue}}{{/allParams}}{{/hasOptionalParams}}
+
+### Return type
+
+{{#returnType}}{{#returnTypeIsPrimitive}}**{{{returnType}}}**{{/returnTypeIsPrimitive}}{{^returnTypeIsPrimitive}}[**{{{returnType}}}**]({{returnBaseType}}.md){{/returnTypeIsPrimitive}}{{/returnType}}{{^returnType}} (empty response body){{/returnType}}
+
+### Authorization
+
+{{^authMethods}}No authorization required{{/authMethods}}{{#authMethods}}[{{{name}}}](../README.md#{{{name}}}){{^-last}}, {{/-last}}{{/authMethods}}
+
+### HTTP request headers
+
+ - **Content-Type**: {{#consumes}}{{{mediaType}}}{{#hasMore}}, {{/hasMore}}{{/consumes}}{{^consumes}}Not defined{{/consumes}}
+ - **Accept**: {{#produces}}{{{mediaType}}}{{#hasMore}}, {{/hasMore}}{{/produces}}{{^produces}}Not defined{{/produces}}
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+{{/operation}}
+{{/operations}}

modules/swagger-codegen/src/main/resources/r/description.mustache

@@ -0,0 +1,12 @@
+Package: {{{packageName}}}
+Title: R Package Client for {{{appName}}}
+Version: {{packageVersion}}
+Authors@R: person("Swagger Codegen community", email = "apiteam@swagger.io", role = c("aut", "cre"))
+Description: {{{appDescription}}}{{^appDescription}}R Package Client for {{{appName}}}{{/appDescription}}
+Depends: R (>= 3.3.3)
+Encoding: UTF-8
+License: Unlicense
+LazyData: true
+Suggests: testthat
+Imports: jsonlite, httr, R6
+RoxygenNote: 6.0.1.9000

modules/swagger-codegen/src/main/resources/r/git_push.sh.mustache

@@ -0,0 +1,52 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 swagger-petstore-perl "minor update"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="{{{gitUserId}}}"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="{{{gitRepoId}}}"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="{{{releaseNote}}}"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository. 
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=`git remote`
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git crediential in your environment."
+        git remote add origin https://github.com/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:${GIT_TOKEN}@github.com/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://github.com/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'
+

modules/swagger-codegen/src/main/resources/r/gitignore.mustache

@@ -0,0 +1,35 @@
+# ref: https://github.com/github/gitignore/blob/master/R.gitignore
+
+# History files
+.Rhistory
+.Rapp.history
+
+# Session Data files
+.RData
+
+# Example code in package build process
+*-Ex.R
+
+# Output files from R CMD build
+/*.tar.gz
+
+# Output files from R CMD check
+/*.Rcheck/
+
+# RStudio files
+.Rproj.user/
+
+# produced vignettes
+vignettes/*.html
+vignettes/*.pdf
+
+# OAuth2 token, see https://github.com/hadley/httr/releases/tag/v0.3
+.httr-oauth
+
+# knitr and R markdown default cache directories
+/*_cache/
+/cache/
+
+# Temporary files created by R markdown
+*.utf8.md
+*.knit.md

modules/swagger-codegen/src/main/resources/r/model.mustache

@@ -0,0 +1,140 @@
+{{#models}}
+{{#model}}
+{{>partial_header}}
+
+
+#' {{classname}} Class
+#' @export
+{{classname}} <- R6::R6Class(
+  '{{classname}}',
+  public = list(
+    {{#vars}}
+    `{{{baseName}}}` = NULL,
+    {{/vars}}
+    initialize = function({{#vars}}`{{baseName}}`{{#hasMore}}, {{/hasMore}}{{/vars}}){
+      {{#vars}}
+      if (!missing(`{{baseName}}`)) {
+        {{^isListContainer}}
+        {{#isInteger}}
+        stopifnot(is.numeric(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isInteger}}
+        {{#isLong}}
+        stopifnot(is.numeric(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isLong}}
+        {{#isFloat}}
+        stopifnot(is.numeric(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isFloat}}
+        {{#isDouble}}
+        stopifnot(is.numeric(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isDouble}}
+        {{#isString}}
+        stopifnot(is.character(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isString}}
+        {{#isDate}}
+        stopifnot(is.character(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isDate}}
+        {{#isDateTime}}
+        stopifnot(is.character(`{{baseName}}`), length(`{{baseName}}`) == 1)
+        {{/isDateTime}}
+        {{^isPrimitiveType}}
+        stopifnot(is.list(tags), length(tags) != 0)
+        lapply(`{{baseName}}`, function(x) stopifnot("Element" %in% class(x), !is.list(x)))
+        {{/isPrimitiveType}}
+        {{/isListContainer}}
+        {{#isListContainer}}
+        {{#isPrimitiveType}}
+        stopifnot(is.list(`{{baseName}}`), length(`{{baseName}}`) != 0)
+        lapply(`{{baseName}}`, function(x) stopifnot(is.character(x)))
+        {{/isPrimitiveType}}
+        {{^isPrimitiveType}}
+        stopifnot(is.list(tags), length(tags) != 0)
+        lapply(`{{baseName}}`, function(x) stopifnot("Element" %in% class(x), !is.list(x)))
+        {{/isPrimitiveType}}
+        {{/isListContainer}}
+        self$`{{baseName}}` <- `{{baseName}}`
+      }
+      {{/vars}}
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           {{#vars}}
+           "{{baseName}}": {{#isListContainer}}[{{/isListContainer}}{{#isPrimitiveType}}{{#isNumeric}}%d{{/isNumeric}}{{^isNumeric}}"%s"{{/isNumeric}}{{/isPrimitiveType}}{{^isPrimitiveType}}%s{{/isPrimitiveType}}{{#isListContainer}}]{{/isListContainer}}{{#hasMore}},{{/hasMore}}
+           {{/vars}}
+        }',
+        {{#vars}}
+        {{#isListContainer}}
+        {{#isPrimitiveType}}
+        lapply(self$`{{baseName}}`, function(x) paste(paste0('"', x, '"'), sep=",")){{#hasMore}},{{/hasMore}}
+        {{/isPrimitiveType}}
+        {{^isPrimitiveType}}
+        lapply(self$`{{baseName}}`, function(x) paste(x$toJSON(), sep=",")){{#hasMore}},{{/hasMore}}
+        {{/isPrimitiveType}}
+        {{/isListContainer}}
+        {{^isListContainer}}
+        self$`{{baseName}}`{{^isPrimitiveType}}$toJSON(){{/isPrimitiveType}}{{#hasMore}},{{/hasMore}}
+        {{/isListContainer}}
+        {{/vars}}
+      )
+    },
+    fromJSON = function({{classname}}Json) {
+      {{classname}}Object <- jsonlite::fromJSON({{classname}}Json)
+      {{#vars}}
+      {{#isPrimitiveType}}
+      self$`{{baseName}}` <- {{classname}}Object`${{baseName}}`
+      {{/isPrimitiveType}}
+      {{^isPrimitiveType}}
+      {{#isListContainer}}
+      self$`{{baseName}}` <- lapply({{classname}}Object$`{{baseName}}`, function(x) {{datatype}}$new()$fromJSON(jsonlite::toJSON(x))
+      {{/isListContainer}}
+      {{^isListContainer}}
+      self$`{{baseName}}` <- {{datatype}}$new()$fromJSON(jsonlite::toJSON({{classname}}Object${{baseName}))
+      {{/isListContainer}}
+      {{/isPrimitiveType}}
+      {{/vars}}
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)
+{{/model}}
+{{/models}}

modules/swagger-codegen/src/main/resources/r/model_doc.mustache

@@ -0,0 +1,11 @@
+{{#models}}{{#model}}# {{classname}}
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+{{#vars}}**{{name}}** | {{#isPrimitiveType}}**{{{datatype}}}**{{/isPrimitiveType}}{{^isPrimitiveType}}[**{{^isContainer}}{{^isDateTime}}*{{/isDateTime}}{{/isContainer}}{{{datatype}}}**]({{complexType}}.md){{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#readOnly}}[readonly] {{/readOnly}}{{#defaultValue}}[default to {{{.}}}]{{/defaultValue}}
+{{/vars}}
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+{{/model}}{{/models}}

modules/swagger-codegen/src/main/resources/r/partial_header.mustache

@@ -0,0 +1,11 @@
+{{#appName}}
+# {{{appName}}}
+# 
+{{/appName}}
+{{#appDescription}}
+# {{{appDescription}}}
+# 
+{{/appDescription}}
+# {{#version}}OpenAPI spec version: {{{version}}}{{/version}}
+# {{#infoEmail}}Contact: {{{infoEmail}}}{{/infoEmail}}
+# Generated by: https://github.com/swagger-api/swagger-codegen.git

samples/client/petstore/r_test/.Rbuildignore

@@ -0,0 +1,2 @@
+^.*\.Rproj$
+^\.Rproj\.user$

samples/client/petstore/r_test/.gitignore

@@ -0,0 +1,35 @@
+# ref: https://github.com/github/gitignore/blob/master/R.gitignore
+
+# History files
+.Rhistory
+.Rapp.history
+
+# Session Data files
+.RData
+
+# Example code in package build process
+*-Ex.R
+
+# Output files from R CMD build
+/*.tar.gz
+
+# Output files from R CMD check
+/*.Rcheck/
+
+# RStudio files
+.Rproj.user/
+
+# produced vignettes
+vignettes/*.html
+vignettes/*.pdf
+
+# OAuth2 token, see https://github.com/hadley/httr/releases/tag/v0.3
+.httr-oauth
+
+# knitr and R markdown default cache directories
+/*_cache/
+/cache/
+
+# Temporary files created by R markdown
+*.utf8.md
+*.knit.md

samples/client/petstore/r_test/.swagger-codegen-ignore

@@ -0,0 +1,23 @@
+# Swagger Codegen Ignore
+# Generated by swagger-codegen https://github.com/swagger-api/swagger-codegen
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell Swagger Codgen to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

samples/client/petstore/r_test/.swagger-codegen/VERSION

@@ -0,0 +1 @@
+2.3.0-SNAPSHOT

samples/client/petstore/r_test/.travis.yml

@@ -0,0 +1,3 @@
+# ref: https://docs.travis-ci.com/user/languages/r/
+language: r
+cache: packages

samples/client/petstore/r_test/DESCRIPTION

@@ -0,0 +1,12 @@
+Package: petstore
+Title: R Package Client for Swagger Petstore
+Version: 1.0.0
+Authors@R: person("Swagger Codegen community", email = "apiteam@swagger.io", role = c("aut", "cre"))
+Description: This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+Depends: R (>= 3.3.3)
+Encoding: UTF-8
+License: Unlicense
+LazyData: true
+Suggests: testthat
+Imports: jsonlite, httr, R6
+RoxygenNote: 6.0.1.9000

samples/client/petstore/r_test/R/ApiResponse.r

@@ -0,0 +1,93 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+
+
+#' ApiResponse Class
+#' @export
+ApiResponse <- R6::R6Class(
+  'ApiResponse',
+  public = list(
+    `code` = NULL,
+    `type` = NULL,
+    `message` = NULL,
+    initialize = function(`code`, `type`, `message`){
+      if (!missing(`code`)) {
+        stopifnot(is.numeric(`code`), length(`code`) == 1)
+        self$`code` <- `code`
+      }
+      if (!missing(`type`)) {
+        stopifnot(is.character(`type`), length(`type`) == 1)
+        self$`type` <- `type`
+      }
+      if (!missing(`message`)) {
+        stopifnot(is.character(`message`), length(`message`) == 1)
+        self$`message` <- `message`
+      }
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           "code": "%s",
+           "type": "%s",
+           "message": "%s"
+        }',
+        self$`code`,
+        self$`type`,
+        self$`message`
+      )
+    },
+    fromJSON = function(ApiResponseJson) {
+      ApiResponseObject <- jsonlite::fromJSON(ApiResponseJson)
+      self$`code` <- ApiResponseObject`$code`
+      self$`type` <- ApiResponseObject`$type`
+      self$`message` <- ApiResponseObject`$message`
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)

samples/client/petstore/r_test/R/Category.r

@@ -0,0 +1,85 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+
+
+#' Category Class
+#' @export
+Category <- R6::R6Class(
+  'Category',
+  public = list(
+    `id` = NULL,
+    `name` = NULL,
+    initialize = function(`id`, `name`){
+      if (!missing(`id`)) {
+        stopifnot(is.numeric(`id`), length(`id`) == 1)
+        self$`id` <- `id`
+      }
+      if (!missing(`name`)) {
+        stopifnot(is.character(`name`), length(`name`) == 1)
+        self$`name` <- `name`
+      }
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           "id": %d,
+           "name": "%s"
+        }',
+        self$`id`,
+        self$`name`
+      )
+    },
+    fromJSON = function(CategoryJson) {
+      CategoryObject <- jsonlite::fromJSON(CategoryJson)
+      self$`id` <- CategoryObject`$id`
+      self$`name` <- CategoryObject`$name`
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)

samples/client/petstore/r_test/R/Order.r

@@ -0,0 +1,116 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+
+
+#' Order Class
+#' @export
+Order <- R6::R6Class(
+  'Order',
+  public = list(
+    `id` = NULL,
+    `petId` = NULL,
+    `quantity` = NULL,
+    `shipDate` = NULL,
+    `status` = NULL,
+    `complete` = NULL,
+    initialize = function(`id`, `petId`, `quantity`, `shipDate`, `status`, `complete`){
+      if (!missing(`id`)) {
+        stopifnot(is.numeric(`id`), length(`id`) == 1)
+        self$`id` <- `id`
+      }
+      if (!missing(`petId`)) {
+        stopifnot(is.numeric(`petId`), length(`petId`) == 1)
+        self$`petId` <- `petId`
+      }
+      if (!missing(`quantity`)) {
+        stopifnot(is.numeric(`quantity`), length(`quantity`) == 1)
+        self$`quantity` <- `quantity`
+      }
+      if (!missing(`shipDate`)) {
+        stopifnot(is.character(`shipDate`), length(`shipDate`) == 1)
+        self$`shipDate` <- `shipDate`
+      }
+      if (!missing(`status`)) {
+        stopifnot(is.character(`status`), length(`status`) == 1)
+        self$`status` <- `status`
+      }
+      if (!missing(`complete`)) {
+        self$`complete` <- `complete`
+      }
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           "id": %d,
+           "petId": %d,
+           "quantity": "%s",
+           "shipDate": "%s",
+           "status": "%s",
+           "complete": "%s"
+        }',
+        self$`id`,
+        self$`petId`,
+        self$`quantity`,
+        self$`shipDate`,
+        self$`status`,
+        self$`complete`
+      )
+    },
+    fromJSON = function(OrderJson) {
+      OrderObject <- jsonlite::fromJSON(OrderJson)
+      self$`id` <- OrderObject`$id`
+      self$`petId` <- OrderObject`$petId`
+      self$`quantity` <- OrderObject`$quantity`
+      self$`shipDate` <- OrderObject`$shipDate`
+      self$`status` <- OrderObject`$status`
+      self$`complete` <- OrderObject`$complete`
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)

samples/client/petstore/r_test/R/Pet.r

@@ -0,0 +1,120 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+
+
+#' Pet Class
+#' @export
+Pet <- R6::R6Class(
+  'Pet',
+  public = list(
+    `id` = NULL,
+    `category` = NULL,
+    `name` = NULL,
+    `photoUrls` = NULL,
+    `tags` = NULL,
+    `status` = NULL,
+    initialize = function(`id`, `category`, `name`, `photoUrls`, `tags`, `status`){
+      if (!missing(`id`)) {
+        stopifnot(is.numeric(`id`), length(`id`) == 1)
+        self$`id` <- `id`
+      }
+      if (!missing(`category`)) {
+        stopifnot(is.list(tags), length(tags) != 0)
+        lapply(`category`, function(x) stopifnot("Element" %in% class(x), !is.list(x)))
+        self$`category` <- `category`
+      }
+      if (!missing(`name`)) {
+        stopifnot(is.character(`name`), length(`name`) == 1)
+        self$`name` <- `name`
+      }
+      if (!missing(`photoUrls`)) {
+        stopifnot(is.list(`photoUrls`), length(`photoUrls`) != 0)
+        lapply(`photoUrls`, function(x) stopifnot(is.character(x)))
+        self$`photoUrls` <- `photoUrls`
+      }
+      if (!missing(`tags`)) {
+        stopifnot(is.list(tags), length(tags) != 0)
+        lapply(`tags`, function(x) stopifnot("Element" %in% class(x), !is.list(x)))
+        self$`tags` <- `tags`
+      }
+      if (!missing(`status`)) {
+        stopifnot(is.character(`status`), length(`status`) == 1)
+        self$`status` <- `status`
+      }
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           "id": %d,
+           "category": %s,
+           "name": "%s",
+           "photoUrls": ["%s"],
+           "tags": [%s],
+           "status": "%s"
+        }',
+        self$`id`,
+        self$`category`$toJSON(),
+        self$`name`,
+        lapply(self$`photoUrls`, function(x) paste(paste0('"', x, '"'), sep=",")),
+        lapply(self$`tags`, function(x) paste(x$toJSON(), sep=",")),
+        self$`status`
+      )
+    },
+    fromJSON = function(PetJson) {
+      PetObject <- jsonlite::fromJSON(PetJson)
+      self$`id` <- PetObject`$id`
+      self$`category` <- Category$new()$fromJSON(jsonlite::toJSON(PetObject${{baseName}))
+      self$`name` <- PetObject`$name`
+      self$`photoUrls` <- PetObject`$photoUrls`
+      self$`tags` <- lapply(PetObject$`tags`, function(x) Tag$new()$fromJSON(jsonlite::toJSON(x))
+      self$`status` <- PetObject`$status`
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)

samples/client/petstore/r_test/R/PetApi.r

@@ -0,0 +1,152 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+PetApi <- R6::R6Class(
+  'PetApi',
+  public = list(
+    userAgent = "Swagger-Codegen/1.0.0/r",
+    basePath = "http://petstore.swagger.io/v2",
+    initialize = function(basePath){
+      if (!missing(basePath)) {
+        stopifnot(is.character(basePath), length(basePath) == 1)
+        self$basePath <- basePath
+      }
+    },
+
+    add_pet = function(body){
+      resp <- httr::POST(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "accept" = "application/json", "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    delete_pet = function(pet_id, api_key){
+      resp <- httr::DELETE(paste0(self$basePath, pet_id),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml", "api_key" = api_key)
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    find_pets_by_status = function(status){
+      resp <- httr::GET(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,query = list(
+            "status" = status
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Pet$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    find_pets_by_tags = function(tags){
+      resp <- httr::GET(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,query = list(
+            "tags" = tags
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Pet$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    get_pet_by_id = function(pet_id){
+      resp <- httr::GET(paste0(self$basePath, pet_id),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Pet$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    update_pet = function(body){
+      resp <- httr::PUT(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "accept" = "application/json", "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    update_pet_with_form = function(pet_id, name, status){
+      resp <- httr::POST(paste0(self$basePath, pet_id),
+          httr::add_headers("User-Agent" = self$userAgent, "accept" = "application/x-www-form-urlencoded", "content-type" = "application/xml")
+          ,body = list(
+              "name" = name,
+              "status" = status
+            )
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    upload_file = function(pet_id, additional_metadata, file){
+      resp <- httr::POST(paste0(self$basePath, pet_id),
+          httr::add_headers("User-Agent" = self$userAgent, "accept" = "multipart/form-data", "content-type" = "application/json")
+          ,body = list(
+              "additionalMetadata" = additional_metadata,
+              "file" = httr::upload_file(file)
+            )
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- ApiResponse$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    }
+  )
+) 

samples/client/petstore/r_test/R/StoreApi.r

@@ -0,0 +1,82 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+StoreApi <- R6::R6Class(
+  'StoreApi',
+  public = list(
+    userAgent = "Swagger-Codegen/1.0.0/r",
+    basePath = "http://petstore.swagger.io/v2",
+    initialize = function(basePath){
+      if (!missing(basePath)) {
+        stopifnot(is.character(basePath), length(basePath) == 1)
+        self$basePath <- basePath
+      }
+    },
+
+    delete_order = function(order_id){
+      resp <- httr::DELETE(paste0(self$basePath, order_id),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    get_inventory = function(){
+      resp <- httr::GET(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/json")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Integer$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    get_order_by_id = function(order_id){
+      resp <- httr::GET(paste0(self$basePath, order_id),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Order$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    place_order = function(body){
+      resp <- httr::POST(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Order$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    }
+  )
+) 

samples/client/petstore/r_test/R/Tag.r

@@ -0,0 +1,85 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+
+
+#' Tag Class
+#' @export
+Tag <- R6::R6Class(
+  'Tag',
+  public = list(
+    `id` = NULL,
+    `name` = NULL,
+    initialize = function(`id`, `name`){
+      if (!missing(`id`)) {
+        stopifnot(is.numeric(`id`), length(`id`) == 1)
+        self$`id` <- `id`
+      }
+      if (!missing(`name`)) {
+        stopifnot(is.character(`name`), length(`name`) == 1)
+        self$`name` <- `name`
+      }
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           "id": %d,
+           "name": "%s"
+        }',
+        self$`id`,
+        self$`name`
+      )
+    },
+    fromJSON = function(TagJson) {
+      TagObject <- jsonlite::fromJSON(TagJson)
+      self$`id` <- TagObject`$id`
+      self$`name` <- TagObject`$name`
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)

samples/client/petstore/r_test/R/User.r

@@ -0,0 +1,133 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+
+
+#' User Class
+#' @export
+User <- R6::R6Class(
+  'User',
+  public = list(
+    `id` = NULL,
+    `username` = NULL,
+    `firstName` = NULL,
+    `lastName` = NULL,
+    `email` = NULL,
+    `password` = NULL,
+    `phone` = NULL,
+    `userStatus` = NULL,
+    initialize = function(`id`, `username`, `firstName`, `lastName`, `email`, `password`, `phone`, `userStatus`){
+      if (!missing(`id`)) {
+        stopifnot(is.numeric(`id`), length(`id`) == 1)
+        self$`id` <- `id`
+      }
+      if (!missing(`username`)) {
+        stopifnot(is.character(`username`), length(`username`) == 1)
+        self$`username` <- `username`
+      }
+      if (!missing(`firstName`)) {
+        stopifnot(is.character(`firstName`), length(`firstName`) == 1)
+        self$`firstName` <- `firstName`
+      }
+      if (!missing(`lastName`)) {
+        stopifnot(is.character(`lastName`), length(`lastName`) == 1)
+        self$`lastName` <- `lastName`
+      }
+      if (!missing(`email`)) {
+        stopifnot(is.character(`email`), length(`email`) == 1)
+        self$`email` <- `email`
+      }
+      if (!missing(`password`)) {
+        stopifnot(is.character(`password`), length(`password`) == 1)
+        self$`password` <- `password`
+      }
+      if (!missing(`phone`)) {
+        stopifnot(is.character(`phone`), length(`phone`) == 1)
+        self$`phone` <- `phone`
+      }
+      if (!missing(`userStatus`)) {
+        stopifnot(is.numeric(`userStatus`), length(`userStatus`) == 1)
+        self$`userStatus` <- `userStatus`
+      }
+    },
+    toJSON = function() {
+       sprintf(
+        '{
+           "id": %d,
+           "username": "%s",
+           "firstName": "%s",
+           "lastName": "%s",
+           "email": "%s",
+           "password": "%s",
+           "phone": "%s",
+           "userStatus": "%s"
+        }',
+        self$`id`,
+        self$`username`,
+        self$`firstName`,
+        self$`lastName`,
+        self$`email`,
+        self$`password`,
+        self$`phone`,
+        self$`userStatus`
+      )
+    },
+    fromJSON = function(UserJson) {
+      UserObject <- jsonlite::fromJSON(UserJson)
+      self$`id` <- UserObject`$id`
+      self$`username` <- UserObject`$username`
+      self$`firstName` <- UserObject`$firstName`
+      self$`lastName` <- UserObject`$lastName`
+      self$`email` <- UserObject`$email`
+      self$`password` <- UserObject`$password`
+      self$`phone` <- UserObject`$phone`
+      self$`userStatus` <- UserObject`$userStatus`
+    }
+  )
+)
+
+#' Element Class
+#'
+#' Element Class
+#' @export
+Element  <- R6::R6Class(
+  'Element',
+  public = list(
+    id = NULL,
+    name = NULL,
+    initialize = function(id,name){
+      if (!missing(id)) {
+        stopifnot(is.numeric(id), length(id) == 1)
+        self$id <- id
+      }
+      if (!missing(name)) {
+        stopifnot(is.character(name), length(name) == 1)
+        self$name <- name
+      }
+    },
+    toJSON = function() {
+       sprintf('{"id":%d,"name":"%s"}', self$id, self$name)
+    }
+  )
+)
+
+#' Response Class
+#'
+#' Response Class
+#' @export
+Response  <- R6::R6Class(
+  'Response',
+  public = list(
+    content = NULL,
+    response = NULL,
+    initialize = function(content, response){
+      self$content <- content
+      self$response <- response
+    }
+  )
+)

samples/client/petstore/r_test/R/UserApi.r

@@ -0,0 +1,143 @@
+# Swagger Petstore
+# 
+# This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+# 
+# OpenAPI spec version: 1.0.0
+# Contact: apiteam@swagger.io
+# Generated by: https://github.com/swagger-api/swagger-codegen.git
+
+UserApi <- R6::R6Class(
+  'UserApi',
+  public = list(
+    userAgent = "Swagger-Codegen/1.0.0/r",
+    basePath = "http://petstore.swagger.io/v2",
+    initialize = function(basePath){
+      if (!missing(basePath)) {
+        stopifnot(is.character(basePath), length(basePath) == 1)
+        self$basePath <- basePath
+      }
+    },
+
+    create_user = function(body){
+      resp <- httr::POST(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    create_users_with_array_input = function(body){
+      resp <- httr::POST(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    create_users_with_list_input = function(body){
+      resp <- httr::POST(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    delete_user = function(username){
+      resp <- httr::DELETE(paste0(self$basePath, username),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    get_user_by_name = function(username){
+      resp <- httr::GET(paste0(self$basePath, username),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- User$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    login_user = function(username, password){
+      resp <- httr::GET(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,query = list(
+            "username" = username,
+            "password" = password
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        result <- Character$new()$fromJSON(httr::content(resp, "text", encoding = "UTF-8"), simplifyVector = FALSE)
+        Response$new(result, resp)
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    logout_user = function(){
+      resp <- httr::GET(paste0(self$basePath),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    },
+    update_user = function(username, body){
+      resp <- httr::PUT(paste0(self$basePath, username),
+          httr::add_headers("User-Agent" = self$userAgent, "content-type" = "application/xml")
+          ,body = body$toJSON()
+          )
+
+      if (httr::status_code(resp) >= 200 && httr::status_code(resp) <= 299) {
+        # void response, no need to return anything
+      } else if (httr::status_code(resp) >= 400 && httr::status_code(resp) <= 499){
+        Response$new("API client error", resp)
+      } else if (httr::status_code(resp) >= 500 && httr::status_code(resp) <= 599){
+        Response$new("API server error", resp)
+      }
+
+    }
+  )
+) 

samples/client/petstore/r_test/README.md

@@ -0,0 +1,19 @@
+# R API client for petstore
+
+This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+
+## Overview
+This API client was generated by the [swagger-codegen](https://github.com/swagger-api/swagger-codegen) project. By using the [OpenAPI/Swagger spec](https://github.com/swagger-api/swagger-spec) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Package version: 1.0.0
+- Build package: io.swagger.codegen.languages.RClientCodegen
+
+## Installation
+
+TODO
+
+## Author
+
+apiteam@swagger.io
+

samples/client/petstore/r_test/git_push.sh

@@ -0,0 +1,52 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 swagger-petstore-perl "minor update"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository. 
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=`git remote`
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git crediential in your environment."
+        git remote add origin https://github.com/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:${GIT_TOKEN}@github.com/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://github.com/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'
+