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io.swagger.codegen.languages.ElmClientCodegen Maven / Gradle / Ivy
package io.swagger.codegen.languages;
import io.swagger.codegen.CodegenConfig;
import io.swagger.codegen.CodegenModel;
import io.swagger.codegen.CodegenOperation;
import io.swagger.codegen.CodegenParameter;
import io.swagger.codegen.CodegenProperty;
import io.swagger.codegen.CodegenResponse;
import io.swagger.codegen.CodegenType;
import io.swagger.codegen.DefaultCodegen;
import io.swagger.codegen.SupportingFile;
import io.swagger.models.Response;
import io.swagger.models.parameters.Parameter;
import io.swagger.models.properties.ArrayProperty;
import io.swagger.models.properties.BooleanProperty;
import io.swagger.models.properties.DateProperty;
import io.swagger.models.properties.DateTimeProperty;
import io.swagger.models.properties.DoubleProperty;
import io.swagger.models.properties.FloatProperty;
import io.swagger.models.properties.IntegerProperty;
import io.swagger.models.properties.LongProperty;
import io.swagger.models.properties.MapProperty;
import io.swagger.models.properties.Property;
import io.swagger.models.properties.StringProperty;
import java.io.File;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
public class ElmClientCodegen extends DefaultCodegen implements CodegenConfig {
private static final String X_ENCODER = "x-encoder";
private static final String X_DECODER = "x-decoder";
private static final String X_DISCRIMINATOR_TYPE = "x-discriminator-value";
private static final String X_UNION_TYPE = "x-union-type";
private Set customPrimitives = new HashSet();
protected String packageName = "swagger";
protected String packageVersion = "1.0.0";
public CodegenType getTag() {
return CodegenType.CLIENT;
}
@Override
public String getName() {
return "elm";
}
public String getHelp() {
return "Generates a Elm client library (beta).";
}
public ElmClientCodegen() {
super();
outputFolder = "generated-code/elm";
modelTemplateFiles.put("model.mustache", ".elm");
apiTemplateFiles.put("api.mustache", ".elm");
templateDir = "elm";
supportsInheritance = true;
reservedWords = new HashSet<>(
Arrays.asList(
"if", "then", "else",
"case", "of",
"let", "in",
"type",
"module", "where",
"import", "exposing",
"as",
"port")
);
defaultIncludes = new HashSet<>(
Arrays.asList(
"List")
);
languageSpecificPrimitives = new HashSet<>(
Arrays.asList(
"Bool",
"Dict",
"Float",
"Int",
"String")
);
customPrimitives = new HashSet<>(
Arrays.asList(
"Byte",
"DateOnly",
"DateTime")
);
instantiationTypes.clear();
typeMapping.clear();
typeMapping.put("integer", "Int");
typeMapping.put("long", "Int");
typeMapping.put("number", "Float");
typeMapping.put("float", "Float");
typeMapping.put("double", "Float");
typeMapping.put("boolean", "Bool");
typeMapping.put("string", "String");
typeMapping.put("array", "List");
typeMapping.put("date", "DateOnly");
typeMapping.put("DateTime", "DateTime");
typeMapping.put("password", "String");
typeMapping.put("file", "String");
typeMapping.put("ByteArray", "Byte");
typeMapping.put("binary", "String");
importMapping.clear();
cliOptions.clear();
supportingFiles.add(new SupportingFile("Byte.mustache", "src", "Byte.elm"));
supportingFiles.add(new SupportingFile("DateOnly.mustache", "src", "DateOnly.elm"));
supportingFiles.add(new SupportingFile("DateTime.mustache", "src", "DateTime.elm"));
supportingFiles.add(new SupportingFile("Main.mustache", "src", "Main.elm"));
supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
supportingFiles.add(new SupportingFile("elm-package.mustache", "", "elm-package.json"));
supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
}
@Override
public String escapeUnsafeCharacters(String input) {
return input.replace("*/", "*_/").replace("/*", "/_*");
}
@Override
public String escapeQuotationMark(String input) {
return input.replace("\"", "");
}
@Override
public String toApiName(String name) {
if (name.length() == 0) {
return "Default";
}
return initialCaps(name);
}
@Override
public String toModelName(String name) {
return camelize(name);
}
@Override
public String toModelFilename(String name) {
return toModelName(name);
}
@Override
public String toEnumName(CodegenProperty property) {
return toModelName(property.name);
}
@Override
public String toVarName(String name) {
final String varName = camelize(name, true);
return isReservedWord(varName) ? escapeReservedWord(name) : varName;
}
@Override
public String toEnumVarName(String value, String datatype) {
final String camelized = camelize(value.replace(" ", "_").replace("(", "_").replace(")", "")); // TODO FIXME escape properly
if (!Character.isUpperCase(camelized.charAt(0))) {
return "N" + camelized;
}
return camelized;
}
@Override
public String escapeReservedWord(String name) {
return name + "_";
}
@Override
public String apiFileFolder() {
return outputFolder + "/src/Request/" + apiPackage().replace('.', File.separatorChar);
}
@Override
public String modelFileFolder() {
return outputFolder + "/src/Data/" + modelPackage().replace('.', File.separatorChar);
}
@SuppressWarnings({ "static-method", "unchecked" })
public Map postProcessAllModels(Map objs) {
// Index all CodegenModels by model name.
Map allModels = new HashMap<>();
for (Map.Entry entry : objs.entrySet()) {
String modelName = toModelName(entry.getKey());
Map inner = (Map) entry.getValue();
List> models = (List>) inner.get("models");
for (Map mo : models) {
CodegenModel cm = (CodegenModel) mo.get("model");
allModels.put(modelName, cm);
}
}
// Let parent know about all its children
for (CodegenModel cm : allModels.values()) {
CodegenModel parent = allModels.get(cm.parent);
if (parent != null) {
if (parent.children == null) {
parent.children = new ArrayList<>();
parent.hasChildren = true;
}
parent.children.add(cm);
Collections.sort(parent.children, new Comparator() {
@Override
public int compare(CodegenModel cm1, CodegenModel cm2) {
return Collator.getInstance().compare(cm1.classname, cm2.classname);
}
});
}
}
for (Map.Entry entry : objs.entrySet()) {
Map inner = (Map) entry.getValue();
List> models = (List>) inner.get("models");
for (Map mo : models) {
CodegenModel cm = (CodegenModel) mo.get("model");
if (cm.isEnum) {
this.addEncoderAndDecoder(cm.vendorExtensions, cm.classname, false);
cm.vendorExtensions.put(X_UNION_TYPE, cm.classname);
} else if (cm.isAlias) {
this.addEncoderAndDecoder(cm.vendorExtensions, cm.dataType, true);
}
List elmImports = new ArrayList<>();
for (CodegenProperty property : cm.allVars) {
if (property.complexType != null) {
elmImports.add(createPropertyImport(property));
}
}
if (cm.discriminator != null) {
for (CodegenModel child : cm.children) {
// add child imports
final ElmImport elmImport = new ElmImport();
final String modulePrefix = customPrimitives.contains(child.classname) ? "" : "Data.";
elmImport.moduleName = modulePrefix + child.classname;
elmImport.exposures = new TreeSet<>();
elmImport.exposures.add(child.classname);
elmImport.exposures.add(child.classVarName + "Decoder");
elmImport.exposures.add(child.classVarName + "Encoder");
elmImport.hasExposures = true;
elmImports.add(elmImport);
// set discriminator value to all children (recursively)
this.setDiscriminatorValue(child, cm.discriminator, this.getDiscriminatorValue(child));
// add all non-discriminator vars
int index = 0;
for (CodegenProperty property : cm.vars) {
if (!cm.discriminator.equals(property.baseName)) {
child.vars.add(index++, property);
}
}
}
}
inner.put("elmImports", elmImports);
}
}
return objs;
}
private void setDiscriminatorValue(CodegenModel model, String baseName, String value) {
for (CodegenProperty prop : model.vars) {
if (prop.baseName.equals(baseName)) {
prop.discriminatorValue = value;
}
}
for (CodegenProperty prop : model.allVars) {
if (prop.baseName.equals(baseName)) {
prop.discriminatorValue = value;
}
}
if (model.children != null) {
final boolean newDiscriminator = model.discriminator != null;
for (CodegenModel child : model.children) {
this.setDiscriminatorValue(child, baseName, newDiscriminator ? value : this.getDiscriminatorValue(child));
}
}
}
private String getDiscriminatorValue(CodegenModel model) {
return model.vendorExtensions.containsKey(X_DISCRIMINATOR_TYPE) ?
(String) model.vendorExtensions.get(X_DISCRIMINATOR_TYPE) : model.classname;
}
private ElmImport createPropertyImport(final CodegenProperty property) {
final ElmImport elmImport = new ElmImport();
final String modulePrefix = customPrimitives.contains(property.complexType) ? "" : "Data.";
elmImport.moduleName = modulePrefix + property.complexType;
elmImport.exposures = new TreeSet<>();
elmImport.exposures.add(property.complexType);
if (property.vendorExtensions.containsKey(X_DECODER)) {
elmImport.exposures.add((String) property.vendorExtensions.get(X_DECODER));
}
if (property.vendorExtensions.containsKey(X_ENCODER)) {
elmImport.exposures.add((String) property.vendorExtensions.get(X_ENCODER));
}
elmImport.hasExposures = true;
return elmImport;
}
@Override
public Map postProcessModels(Map objs) {
return postProcessModelsEnum(objs);
}
@Override
@SuppressWarnings({ "static-method", "unchecked" })
public Map postProcessOperations(Map operations) {
Map objs = (Map) operations.get("operations");
List ops = (List) objs.get("operation");
Map> dependencies = new HashMap<>();
for (CodegenOperation op : ops) {
String path = op.path;
for (CodegenParameter param : op.pathParams) {
final String var = param.isString ? param.paramName : "toString " + param.paramName;
path = path.replace("{" + param.paramName + "}", "\" ++ " + var + " ++ \"");
}
op.path = ("\"" + path + "\"").replaceAll(" \\+\\+ \"\"", "");
if (op.bodyParam != null) {
final String encoder = (String) op.bodyParam.vendorExtensions.get(X_ENCODER);
if (encoder != null) {
if (!dependencies.containsKey(op.bodyParam.dataType)) {
dependencies.put(op.bodyParam.dataType, new TreeSet());
}
dependencies.get(op.bodyParam.dataType).add(encoder);
}
}
for (CodegenResponse resp : op.responses) {
final String decoder = (String) resp.vendorExtensions.get(X_DECODER);
if (decoder != null) {
if (!dependencies.containsKey(resp.dataType)) {
dependencies.put(resp.dataType, new TreeSet());
}
dependencies.get(resp.dataType).add(decoder);
}
}
}
List elmImports = new ArrayList<>();
for (Map.Entry> entry : dependencies.entrySet()) {
final ElmImport elmImport = new ElmImport();
final String key = entry.getKey();
elmImport.moduleName = "Data." + key;
elmImport.exposures = entry.getValue();
elmImport.exposures.add(key);
elmImport.hasExposures = true;
elmImports.add(elmImport);
}
operations.put("elmImports", elmImports);
return operations;
}
@Override
public String toDefaultValue(Property p) {
if (p instanceof StringProperty) {
StringProperty sp = (StringProperty) p;
if (sp.getDefault() != null) {
return toOptionalValue("\"" + sp.getDefault().toString() + "\"");
}
return toOptionalValue(null);
} else if (p instanceof BooleanProperty) {
BooleanProperty bp = (BooleanProperty) p;
if (bp.getDefault() != null) {
return toOptionalValue(bp.getDefault() ? "True" : "False");
}
return toOptionalValue(null);
} else if (p instanceof DateProperty) {
return toOptionalValue(null);
} else if (p instanceof DateTimeProperty) {
return toOptionalValue(null);
} else if (p instanceof DoubleProperty) {
DoubleProperty dp = (DoubleProperty) p;
if (dp.getDefault() != null) {
return toOptionalValue(dp.getDefault().toString());
}
return toOptionalValue(null);
} else if (p instanceof FloatProperty) {
FloatProperty fp = (FloatProperty) p;
if (fp.getDefault() != null) {
return toOptionalValue(fp.getDefault().toString());
}
return toOptionalValue(null);
} else if (p instanceof IntegerProperty) {
IntegerProperty ip = (IntegerProperty) p;
if (ip.getDefault() != null) {
return toOptionalValue(ip.getDefault().toString());
}
return toOptionalValue(null);
} else if (p instanceof LongProperty) {
LongProperty lp = (LongProperty) p;
if (lp.getDefault() != null) {
return toOptionalValue(lp.getDefault().toString());
}
return toOptionalValue(null);
} else {
return toOptionalValue(null);
}
}
private String toOptionalValue(String value) {
if (value == null) {
return "Nothing";
}
return "(Just " + value + ")";
}
@Override
public String getSwaggerType(Property p) {
String swaggerType = super.getSwaggerType(p);
String type;
if (typeMapping.containsKey(swaggerType)) {
type = typeMapping.get(swaggerType);
if (languageSpecificPrimitives.contains(type)) {
return type;
}
} else
type = swaggerType;
return toModelName(type);
}
@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);
}
return super.getTypeDeclaration(p);
}
@Override
public CodegenProperty fromProperty(String name, Property p) {
final CodegenProperty property = super.fromProperty(name, p);
final String dataType = property.isEnum ? property.baseName : property.datatype;
addEncoderAndDecoder(property.vendorExtensions, dataType, property.isPrimitiveType && !property.isEnum);
if (property.isEnum) {
property.vendorExtensions.put(X_UNION_TYPE, property.datatypeWithEnum);
}
return property;
}
@Override
public CodegenResponse fromResponse(String responseCode, Response resp) {
final CodegenResponse response = super.fromResponse(responseCode, resp);
if (response.dataType != null) {
addEncoderAndDecoder(response.vendorExtensions, response.dataType, response.primitiveType);
}
return response;
}
@Override
public CodegenParameter fromParameter(Parameter param, Set imports) {
final CodegenParameter parameter = super.fromParameter(param, imports);
addEncoderAndDecoder(parameter.vendorExtensions, parameter.dataType, parameter.isPrimitiveType);
return parameter;
}
private void addEncoderAndDecoder(Map vendorExtensions, String dataType, Boolean isPrimitiveType) {
final String baseName = camelize(dataType, true);
String encoderName;
String decoderName;
if (isPrimitiveType) {
encoderName = "Encode." + baseName;
decoderName = "Decode." + baseName;
} else {
encoderName = baseName + "Encoder";
decoderName = baseName + "Decoder";
}
if (!vendorExtensions.containsKey(X_ENCODER)) {
vendorExtensions.put(X_ENCODER, encoderName);
}
if (!vendorExtensions.containsKey(X_DECODER)) {
vendorExtensions.put(X_DECODER, decoderName);
}
}
private static class ElmImport {
public String moduleName;
public String as;
public Set exposures;
public Boolean hasExposures;
}
}
