generator

Documentation

Index

• func CamelCase(s string) string
• func CamelCaseSlice(elem []string) string
• type Descriptor
  • func (c *Descriptor) File() *FileDescriptor
  • func (c *Descriptor) GoImportPath() GoImportPath
  • func (d *Descriptor) TypeName() []string
• type EnumDescriptor
  • func (c *EnumDescriptor) File() *FileDescriptor
  • func (c *EnumDescriptor) GoImportPath() GoImportPath
  • func (e *EnumDescriptor) TypeName() (s []string)
• type ExtensionDescriptor
  • func (e *ExtensionDescriptor) DescName() string
  • func (c *ExtensionDescriptor) File() *FileDescriptor
  • func (c *ExtensionDescriptor) GoImportPath() GoImportPath
  • func (e *ExtensionDescriptor) TypeName() (s []string)
• type FileDescriptor
  • func (d *FileDescriptor) VarName() string
• type Generator
  • func New() *Generator
  • func (g *Generator) BuildTypeNameMap()
  • func (g *Generator) CommandLineParameters(parameter string)
  • func (g *Generator) DefaultPackageName(obj Object) string
  • func (g *Generator) Error(err error, msgs ...string)
  • func (g *Generator) Fail(msgs ...string)
  • func (g *Generator) GenerateAllFiles()
  • func (g *Generator) GetGoPackageName(f *descriptor.FileDescriptorProto) (string, string)
  • func (g *Generator) GetImports(f *descriptor.FileDescriptorProto) map[string]string
  • func (g *Generator) GoPackageName(importPath GoImportPath) GoPackageName
  • func (g *Generator) GoType(message *Descriptor, field *descriptor.FieldDescriptorProto) (typ string, wire string)
  • func (g *Generator) ObjectNamed(typeName string) Object
  • func (g *Generator) P(a ...interface{})
  • func (g *Generator) SetPackageNames()
  • func (g *Generator) TypeName(obj Object) string
  • func (g *Generator) WrapTypes()
• type GoImportPath
  • func (p GoImportPath) String() string
• type GoPackageName
• type ImportedDescriptor
  • func (c *ImportedDescriptor) File() *FileDescriptor
  • func (c *ImportedDescriptor) GoImportPath() GoImportPath
  • func (id *ImportedDescriptor) TypeName() []string
• type Object

Functions

func CamelCase

func CamelCase(s string) string

CamelCase returns the CamelCased name. If there is an interior underscore followed by a lower case letter, drop the underscore and convert the letter to upper case. There is a remote possibility of this rewrite causing a name collision, but it's so remote we're prepared to pretend it's nonexistent - since the C++ generator lowercases names, it's extremely unlikely to have two fields with different capitalizations. In short, _my_field_name_2 becomes XMyFieldName_2.

func CamelCaseSlice

func CamelCaseSlice(elem []string) string

CamelCaseSlice is like CamelCase, but the argument is a slice of strings to be joined with "_".

Types

type Descriptor

type Descriptor struct {
	*descriptor.DescriptorProto
	// contains filtered or unexported fields
}

Descriptor represents a protocol buffer message.

func (*Descriptor) File

func (c *Descriptor) File() *FileDescriptor

func (*Descriptor) GoImportPath

func (c *Descriptor) GoImportPath() GoImportPath

GoImportPath is the import path of the Go package containing the type.

func (*Descriptor) TypeName

func (d *Descriptor) TypeName() []string

TypeName returns the elements of the dotted type name. The package name is not part of this name.

type EnumDescriptor

type EnumDescriptor struct {
	*descriptor.EnumDescriptorProto
	// contains filtered or unexported fields
}

EnumDescriptor describes an enum. If it's at top level, its parent will be nil. Otherwise it will be the descriptor of the message in which it is defined.

func (*EnumDescriptor) File

func (c *EnumDescriptor) File() *FileDescriptor

func (*EnumDescriptor) GoImportPath

func (c *EnumDescriptor) GoImportPath() GoImportPath

GoImportPath is the import path of the Go package containing the type.

func (*EnumDescriptor) TypeName

func (e *EnumDescriptor) TypeName() (s []string)

TypeName returns the elements of the dotted type name. The package name is not part of this name.

type ExtensionDescriptor

type ExtensionDescriptor struct {
	*descriptor.FieldDescriptorProto
	// contains filtered or unexported fields
}

ExtensionDescriptor describes an extension. If it's at top level, its parent will be nil. Otherwise it will be the descriptor of the message in which it is defined.

func (*ExtensionDescriptor) DescName

func (e *ExtensionDescriptor) DescName() string

DescName returns the variable name used for the generated descriptor.

func (*ExtensionDescriptor) File

func (c *ExtensionDescriptor) File() *FileDescriptor

func (*ExtensionDescriptor) GoImportPath

func (c *ExtensionDescriptor) GoImportPath() GoImportPath

GoImportPath is the import path of the Go package containing the type.

func (*ExtensionDescriptor) TypeName

func (e *ExtensionDescriptor) TypeName() (s []string)

TypeName returns the elements of the dotted type name. The package name is not part of this name.

type FileDescriptor

type FileDescriptor struct {
	*descriptor.FileDescriptorProto
	// contains filtered or unexported fields
}

FileDescriptor describes an protocol buffer descriptor file (.proto). It includes slices of all the messages and enums defined within it. Those slices are constructed by WrapTypes.

func (*FileDescriptor) VarName

func (d *FileDescriptor) VarName() string

VarName is the variable name we'll use in the generated code to refer to the compressed bytes of this descriptor. It is not exported, so it is only valid inside the generated package.

type Generator

type Generator struct {
	*bytes.Buffer

	Request  *plugin.CodeGeneratorRequest  // The input.
	Response *plugin.CodeGeneratorResponse // The output.

	Param             map[string]string // Command-line parameters.
	PackageImportPath string            // Go import path of the package we're generating code for
	ImportPrefix      string            // String to prefix to imported package file names.
	ImportMap         map[string]string // Mapping from .proto file name to import path

	Pkg map[string]string // The names under which we import support packages
	// contains filtered or unexported fields
}

Generator is the type whose methods generate the output, stored in the associated response structure.

func New

func New() *Generator

New creates a new generator and allocates the request and response protobufs.

func (*Generator) BuildTypeNameMap

func (g *Generator) BuildTypeNameMap()

BuildTypeNameMap builds the map from fully qualified type names to objects. The key names for the map come from the input data, which puts a period at the beginning. It should be called after SetPackageNames and before GenerateAllFiles.

func (*Generator) CommandLineParameters

func (g *Generator) CommandLineParameters(parameter string)

CommandLineParameters breaks the comma-separated list of key=value pairs in the parameter (a member of the request protobuf) into a key/value map. It then sets file name mappings defined by those entries.

func (*Generator) DefaultPackageName

func (g *Generator) DefaultPackageName(obj Object) string

DefaultPackageName returns the package name printed for the object. If its file is in a different package, it returns the package name we're using for this file, plus ".". Otherwise it returns the empty string.

func (*Generator) Error

func (g *Generator) Error(err error, msgs ...string)

Error reports a problem, including an error, and exits the program.

func (*Generator) Fail

func (g *Generator) Fail(msgs ...string)

Fail reports a problem and exits the program.

func (*Generator) GenerateAllFiles

func (g *Generator) GenerateAllFiles()

GenerateAllFiles generates the output for all the files we're outputting.

func (*Generator) GetGoPackageName

func (g *Generator) GetGoPackageName(f *descriptor.FileDescriptorProto) (string, string)

func (*Generator) GetImports

func (g *Generator) GetImports(f *descriptor.FileDescriptorProto) map[string]string

Generate the imports

func (*Generator) GoPackageName

func (g *Generator) GoPackageName(importPath GoImportPath) GoPackageName

GoPackageName returns the name used for a package.

func (*Generator) GoType

func (g *Generator) GoType(message *Descriptor, field *descriptor.FieldDescriptorProto) (typ string, wire string)

GoType returns a string representing the type name, and the wire type

func (*Generator) ObjectNamed

func (g *Generator) ObjectNamed(typeName string) Object

ObjectNamed, given a fully-qualified input type name as it appears in the input data, returns the descriptor for the message or enum with that name.

func (*Generator) P

func (g *Generator) P(a ...interface{})

func (*Generator) SetPackageNames

func (g *Generator) SetPackageNames()

SetPackageNames sets the package name for this run. The package name must agree across all files being generated. It also defines unique package names for all imported files.

func (*Generator) TypeName

func (g *Generator) TypeName(obj Object) string

TypeName is the printed name appropriate for an item. If the object is in the current file, TypeName drops the package name and underscores the rest. Otherwise the object is from another package; and the result is the underscored package name followed by the item name. The result always has an initial capital.

func (*Generator) WrapTypes

func (g *Generator) WrapTypes()

WrapTypes walks the incoming data, wrapping DescriptorProtos, EnumDescriptorProtos and FileDescriptorProtos into file-referenced objects within the Generator. It also creates the list of files to generate and so should be called before GenerateAllFiles.

type GoImportPath

type GoImportPath string

A GoImportPath is the import path of a Go package. e.g., "google.golang.org/genproto/protobuf".

func (GoImportPath) String

func (p GoImportPath) String() string

type GoPackageName

type GoPackageName string

A GoPackageName is the name of a Go package. e.g., "protobuf".

type ImportedDescriptor

type ImportedDescriptor struct {
	// contains filtered or unexported fields
}

ImportedDescriptor describes a type that has been publicly imported from another file.

func (*ImportedDescriptor) File

func (c *ImportedDescriptor) File() *FileDescriptor

func (*ImportedDescriptor) GoImportPath

func (c *ImportedDescriptor) GoImportPath() GoImportPath

GoImportPath is the import path of the Go package containing the type.

func (*ImportedDescriptor) TypeName

func (id *ImportedDescriptor) TypeName() []string

type Object

type Object interface {
	GoImportPath() GoImportPath
	TypeName() []string
	File() *FileDescriptor
}

Object is an interface abstracting the abilities shared by enums, messages, extensions and imported objects.