template

package
v1.6.1 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jul 26, 2019 License: Apache-2.0 Imports: 28 Imported by: 7

Documentation

Index

Constants

View Source 
const (
	// ErrBadArgumentCount may be returned by a template invocation that has unpaired arguments
	ErrBadArgumentCount = fault.Const("bad argument count, must be in pairs")
	// ErrBadInvokeKeys may be returned by a template invocation that has invalid arguments keys
	ErrBadInvokeKeys = fault.Const("invoke keys must be strings")
)

Variables

View Source 
var (
	// NodeTypeList exposes all the types valid as Is*name* tests
	NodeTypeList = []interface{}{

		"",
		false,

		semantic.BoolValue(true),
		semantic.StringValue(""),
		semantic.Int8Value(0),
		semantic.Uint8Value(0),
		semantic.Int16Value(0),
		semantic.Uint16Value(0),
		semantic.Int32Value(0),
		semantic.Uint32Value(0),
		semantic.Int64Value(0),
		semantic.Uint64Value(0),
		semantic.Float32Value(0),
		semantic.Float64Value(0),

		semantic.Abort{},
		semantic.Annotation{},
		semantic.API{},
		semantic.ArrayAssign{},
		semantic.ArrayIndex{},
		semantic.ArrayInitializer{},
		semantic.Assert{},
		semantic.Assign{},
		semantic.BinaryOp{},
		semantic.BitTest{},
		semantic.Block{},
		semantic.Branch{},
		semantic.Builtin{},
		semantic.Call{},
		semantic.Callable{},
		semantic.Cast{},
		semantic.Choice{},
		semantic.ClassInitializer{},
		semantic.Class{},
		semantic.Clone{},
		semantic.Copy{},
		semantic.Create{},
		semantic.DeclareLocal{},
		semantic.Definition{},
		semantic.EnumEntry{},
		semantic.Enum{},
		semantic.Fence{},
		semantic.Field{},
		semantic.FieldInitializer{},
		semantic.Function{},
		semantic.Global{},
		semantic.Ignore{},
		semantic.Iteration{},
		semantic.MapIteration{},
		semantic.Length{},
		semantic.Local{},
		semantic.Make{},
		semantic.MapAssign{},
		semantic.MapContains{},
		semantic.MapIndex{},
		semantic.MapRemove{},
		semantic.MapClear{},
		semantic.Map{},
		semantic.Member{},
		semantic.MessageValue{},
		semantic.New{},
		semantic.Null{},
		semantic.Observed{},
		semantic.Parameter{},
		semantic.PointerRange{},
		semantic.Pointer{},
		semantic.Pseudonym{},
		semantic.Read{},
		semantic.Reference{},
		semantic.Return{},
		semantic.Select{},
		semantic.SliceAssign{},
		semantic.SliceContains{},
		semantic.SliceIndex{},
		semantic.SliceRange{},
		semantic.Slice{},
		semantic.Slice{},
		semantic.StaticArray{},
		semantic.Switch{},
		semantic.UnaryOp{},
		semantic.Unknown{},
		semantic.Write{},

		(*semantic.Annotated)(nil),
		(*semantic.Expression)(nil),
		(*semantic.Type)(nil),
		(*semantic.Owned)(nil),
	}
)

Functions

This section is empty.

Types

type ConstantSets 

type ConstantSets struct {
	Pack constset.Pack
	Sets map[semantic.Node]*int
}

ConstantSets consatins the constset.Pack, and each semantic mapping to a constset.Set index.

type Functions 

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

func NewFunctions 

func NewFunctions(ctx context.Context, api *semantic.API, mappings *semantic.Mappings, options Options) (*Functions, error)

NewFunctions builds a new template management object that can be used to run templates over an API file. The apiFile name is used in error messages, and should be the name of the file the api was loaded from. loader can be used to intercept file system access from within the templates, specifically used when including other templates. The functions in funcs are made available to the templates, and can override the functions from this package if needed.

func (*Functions) AllCommands 

func (f *Functions) AllCommands(api interface{}) ([]*semantic.Function, error)

AllCommands returns a list of all cmd entries for a given API, regardless of whether they are free functions, class methods or pseudonym methods.

func (*Functions) AllCommandsSorted 

func (f *Functions) AllCommandsSorted(api interface{}) ([]*semantic.Function, error)

AllCommandsSorted returns the list of commands retuned by AllCommands, sorted lexicographically.

func (*Functions) Args 

func (f *Functions) Args(arguments ...interface{}) (interface{}, error)

Args builds a template argument object from a list of arguments. If no arguments are passed then the result will be nil. If a single argument is passed then the result will be the value of that argument. If the first argument is a map, it is assumed to be a base argument set to be augmented. Remaining arguments must come in name-value pairs. For example: 

{{define "SingleParameterMacro"}}
    $ is: {{$}}
{{end}}

{{define "MultipleParameterMacro"}}
    $.ArgA is: {{$.ArgA}}, $.ArgB is: {{$.ArgB}}
{{end}}

{{template "SingleParameterMacro" (Args)}}
{{/* Returns "$ is: nil" */}}

{{template "SingleParameterMacro" (Args 42)}}
{{/* Returns "$ is: 42" */}}

{{template "MultipleParameterMacro" (Args "ArgA" 4 "ArgB" 2)}}
{{/* Returns "$.ArgA is: 4, $.ArgB is: 2" */}}

func (*Functions) AsSigned 

func (*Functions) AsSigned(v interface{}) interface{}

AsSigned returns a signed reinterpretation of v of the same size if v an unsigned integer, or v if v a signed integer, otherwise nil.

func (*Functions) AssertType 

func (*Functions) AssertType(v interface{}, expected ...string) (string, error)

Asserts that the type of v is in the list of expected types

func (*Functions) Bitpos 

func (*Functions) Bitpos(v uint32) int

Bitpos returns the position of the only non-zero bit of v. If none or more than one bits are non-zero in v, returns -1.

func (Functions) CFieldName added in v1.1.0 

func (Functions) CFieldName(obj interface{}) string

CFieldName converts an api name to a c field name.

func (Functions) CommandName 

func (Functions) CommandName(obj interface{}) string

CommandName converts an api name to a command name.

func (*Functions) ConstantSetIndex 

func (f *Functions) ConstantSetIndex(n semantic.Node) int

ConstantSetIndex returns the constant set for the given parameter.

func (*Functions) ConstantSets 

func (f *Functions) ConstantSets() constset.Pack

ConstantSets returns the full constants set pack for the API.

func (Functions) Contains 

func (Functions) Contains(substr string, v ...interface{}) bool

Contains returns true if any string segment contains substr.

func (*Functions) Copyright 

func (f *Functions) Copyright(name string, tool string) (string, error)

Copyright emits the copyright header specified by name with the «Tool» set to tool.

func (*Functions) Decompose 

func (f *Functions) Decompose(ty semantic.Type) semantic.Type

Decompose returns the fundamental building block of a type. The intent is to provide type information to enhance the memory display. Arrays and Slices are decomposed into their element type, other types decompose into their underlying type. The builtin string decomposes to char. Pointers decompose into pointers to their decomposed To type. AnyType is returned for composite types which do not decompose into a builtin, pointer or an enum. As a special case semantic.StringType is returned if ty is a pointer to "char*" or "const char*".

func (*Functions) Error 

func (f *Functions) Error(s string, args ...interface{}) (string, error)

Error raises an error terminating execution of the template. 

{{Error "Foo returned error: %s" $err}}

func (Functions) FilterOut 

func (Functions) FilterOut(v, from stringList) stringList

FilterOut returns from with all occurances of v removed.

func (*Functions) ForEach 

func (f *Functions) ForEach(arr interface{}, m string) (stringList, error)

ForEach returns a string list containing the strings emitted by calling the macro m for each sequential item in the array arr. 0 length strings will be ommitted from the returned list.

func (*Functions) Format 

func (f *Functions) Format(command stringList, value string) (string, error)

Format reflows the string using an external command.

func (*Functions) GetAnnotation 

func (*Functions) GetAnnotation(ty interface{}, name string) *semantic.Annotation

GetAnnotation finds and returns the annotation on ty with the specified name. If the annotation cannot be found, or ty does not support annotations then GetAnnotation returns nil.

func (*Functions) Global 

func (f *Functions) Global(name string, values ...interface{}) (interface{}, error)

Gets or sets a template global variable Example: 

{{Global "CatSays" "Meow"}}
The cat says: {{Global "CatSays"}}

func (Functions) GoCommandName 

func (Functions) GoCommandName(obj interface{}) string

GoCommandName converts an api name to the public go command name form.

func (*Functions) GoFmt 

func (f *Functions) GoFmt(value string) (string, error)

GoFmt reflows the string as if it were go code using the standard go fmt library.

func (Functions) GoPrivateName 

func (Functions) GoPrivateName(obj interface{}) string

GoPrivateName converts an api name to the private go form.

func (Functions) GoPublicName 

func (Functions) GoPublicName(obj interface{}) string

GoPublicName converts an api name to the public go form.

func (*Functions) HasMore 

func (*Functions) HasMore(i int, l interface{}) bool

HasMore returns true if the i'th indexed item in l is not the last.

func (Functions) HasPrefix 

func (Functions) HasPrefix(s string, prefix string) bool

HasPrefix tests whether the string s begins with prefix.

func (Functions) HasSuffix added in v1.1.0 

func (Functions) HasSuffix(s string, suffix string) bool

HasSuffix tests whether the string s ends with suffix.

func (*Functions) Inc 

func (f *Functions) Inc(name string) (interface{}, error)

Increments and returns a global variable Example: 

{{Global "ProtoID" 0}}
bool field = {{Inc "ProtoID"}}

func (*Functions) Include 

func (f *Functions) Include(templates ...string) error

Include loads each of the templates and executes their main bodies. The filenames are relative to the template doing the include.

func (*Functions) IndexOf 

func (*Functions) IndexOf(array interface{}, value interface{}) int

IndexOf returns the index of value in the list array. If value is not found in array then IndexOf returns -1.

func (*Functions) IsNil 

func (f *Functions) IsNil(v interface{}) bool

IsNil returns true if v is nil.

func (*Functions) IsNumericType 

func (*Functions) IsNumericType(t interface{}) bool

IsNumericType returns true if t is one of the primitive numeric types.

func (*Functions) IsNumericValue 

func (*Functions) IsNumericValue(v interface{}) bool

IsNumericValue returns true if v is one of the primitive numeric value types.

func (*Functions) IsStorageType added in v1.1.0 

func (*Functions) IsStorageType(ty semantic.Type) bool

IsStorageType returns true if ty can be used as a storage type.

func (*Functions) Join 

func (*Functions) Join(slices ...interface{}) []interface{}

Join returns the concatenation of all the passed array or slices into a single, sequential list.

func (Functions) JoinWith 

func (Functions) JoinWith(sep string, v ...interface{}) string

JoinWith returns the concatenation of all the string segments with the specified separator.

func (*Functions) Length added in v1.3.1 

func (f *Functions) Length(arr interface{}) (int, error)

func (*Functions) Log 

func (f *Functions) Log(s string, args ...interface{}) string

Log prints s and optional format arguments to stdout. Example: 

{{Log "%s %s" "Hello" "world}}

func (Functions) Lower 

func (Functions) Lower(v ...interface{}) stringList

Lower lower-cases all letters of each string segment.

func (*Functions) Macro 

func (f *Functions) Macro(name string, arguments ...interface{}) (string, error)

Macro invokes the template macro with the specified name and returns the template output as a string. See Args for how the arguments are processed.

func (Functions) NameOf 

func (Functions) NameOf(obj interface{}) string

NameOf returns the name of the supplied object if it has one.

func (*Functions) NewReflow 

func (f *Functions) NewReflow(indent string, value string) (string, error)

NewReflow reformats the value using the reflow package.

func (*Functions) Node 

func (f *Functions) Node(prefix string, node semantic.Node, arguments ...interface{}) (string, error)

Node dispatches to the template that matches the node best, writing the result to the current output writer. If the node is a Type or Expression then the type semantic.Type name is tried, then the class of type (the name of the semantic class that represents the type). The actual name of the node type is then tried, and if none of those matches, the "Default" template is used if present. If no possible template could be matched, and error is generated. eg: {{Node "TypeName" $}} where $ is a boolean and expression would try 

"TypeName#Bool"
"TypeName.Builtin"
"TypeName.BinaryOp"
"TypeName_Default"

See Args for how the arguments are processed, in addition the Node arg will be added in and have the value of node, and if the node had a type discovered, the Type arg will be added in as well.

func (*Functions) Partition 

func (f *Functions) Partition(arr interface{}, keyMacro string, num int) (interface{}, error)

Divides a slice into num buckets and returns a slice of new slices. keyMacro is the name of a macro which should generate a stable key for the object in the slice.

func (*Functions) PartitionByKey 

func (f *Functions) PartitionByKey(arr interface{}, keyMacro string) (interface{}, error)

PartitionByKey Divides a slice into one bucket for each different keyMacro returned. keyMacro is the name of a macro which should generate a stable key for the object in the slice.

func (Functions) ProtoCppName added in v0.9.6 

func (Functions) ProtoCppName(obj interface{}) string

ProtoCppName converts an api name to the cpp name produced by the proto compiler.

func (Functions) ProtoGoName 

func (Functions) ProtoGoName(obj interface{}) string

ProtoGoName converts an api name to the go name produced by the proto compiler.

func (Functions) ProtoName 

func (Functions) ProtoName(obj interface{}) string

ProtoName converts an api name to the proto name.

func (*Functions) ProtoType added in v1.1.0 

func (f *Functions) ProtoType(ty interface{}) string

ProtoType returns the proto type name for the given type.

func (*Functions) Reflow 

func (f *Functions) Reflow(indentSize int, value string) (string, error)

Reflow does the primitive reflow, but no language specific handling.

func (Functions) Replace 

func (Functions) Replace(old string, new string, v ...interface{}) stringList

Replace any occurance of old with new in the string segments.

func (*Functions) Reverse 

func (*Functions) Reverse(in interface{}) interface{}

Reverse returns a new list with all the elements of in reversed.

func (*Functions) SNode 

func (f *Functions) SNode(prefix string, node semantic.Node, arguments ...interface{}) (string, error)

SNode dispatches to the template that matches the node best, capturing the result and returning it. See Node for the dispatch rules used.

func (*Functions) SortBy 

func (f *Functions) SortBy(arr interface{}, keyMacro string) (interface{}, error)

SortBy returns a new list containing the sorted elements of arr. The list is sorted by the string values returned by calling the template function keyMacro with each element in the list.

func (Functions) SplitEOL 

func (f Functions) SplitEOL(v ...interface{}) stringList

SplitEOL slices each string segement into all substrings separated by an end of line delimiter (\n or \r\n). The returned stringList will not contain any new lines.

func (Functions) SplitOn 

func (Functions) SplitOn(sep string, v ...interface{}) stringList

SplitOn slices each string segement into all substrings separated by sep. The returned stringList will not contain any occurances of sep.

func (Functions) SplitPascalCase 

func (Functions) SplitPascalCase(v ...interface{}) stringList

SplitPascalCase slices each string segment at each transition from an letter rune to a upper-case letter rune.

func (Functions) SplitUpperCase 

func (Functions) SplitUpperCase(v ...interface{}) stringList

SplitUpperCase slices each string segment before and after each upper-case rune.

func (Functions) Strings 

func (Functions) Strings(v ...interface{}) stringList

Strings returns the arguments as a string list.

func (*Functions) Tail 

func (*Functions) Tail(start int, array interface{}) interface{}

Tail returns a slice of the list from start to len(array).

func (*Functions) TargetField added in v0.9.0 

func (f *Functions) TargetField(e semantic.Expression) interface{}

TargetField returns the *semantic.Field if e is an expression that refers to a class field, otherwise nil.

func (*Functions) Template 

func (f *Functions) Template(name string, arguments ...interface{}) (string, error)

Template invokes the template with the specified name writing the output to the current output writer. See Args for how the arguments are processed.

func (Functions) Title 

func (Functions) Title(v ...interface{}) stringList

Title capitalizes each letter of each string segment.

func (*Functions) TokenOf 

func (f *Functions) TokenOf(v semantic.Node) string

TokenOf returns the cst token string that represents the supplied semantic node

func (Functions) TrimLeft 

func (Functions) TrimLeft(cutset string, from ...interface{}) stringList

TrimLeft returns from with the all leading Unicode code points contained in cutset removed.

func (Functions) TrimPrefix 

func (Functions) TrimPrefix(prefix string, from ...interface{}) stringList

TrimPrefix returns from with without the provided leading prefix string.

func (Functions) TrimRight 

func (Functions) TrimRight(cutset string, from ...interface{}) stringList

TrimRight returns from with the all trailing Unicode code points contained in cutset removed.

func (Functions) TrimSuffix added in v1.1.0 

func (Functions) TrimSuffix(suffix string, from ...interface{}) stringList

TrimSuffix returns from without the provided trailing suffix string.

func (*Functions) TypeOf 

func (*Functions) TypeOf(v semantic.Node) (semantic.Type, error)

TypeOf returns the resolved semantic type of an expression node.

func (*Functions) Underlying 

func (f *Functions) Underlying(ty semantic.Type) semantic.Type

Underlying returns the underlying type for ty by recursively traversing the pseudonym chain until reaching and returning the first non-pseudoym type. If ty is not a pseudonym then it is simply returned.

func (*Functions) UniqueEnumKeys 

func (*Functions) UniqueEnumKeys(e *semantic.Enum) ([]*semantic.EnumEntry, error)

UniqueEnumKeys returns the enum's list of EnumEntry with duplicate values removed. To remove duplicates the entry with the shortest name is picked.

func (*Functions) Unpack 

func (*Functions) Unpack(v interface{}) interface{}

Unpack throws away type information to work around template system limitations When you have a value of an interface type that carries methods, it fails to introspect the concrete type for its members, so the template can't see them. The result of Upack no longer has a type, so the concrete type members become visible.

func (Functions) Untitle 

func (Functions) Untitle(v ...interface{}) stringList

Untitle lower-cases each letter of each string segment.

func (Functions) Upper 

func (Functions) Upper(v ...interface{}) stringList

Upper upper-cases all letters of each string segment.

func (*Functions) WithAnnotation 

func (*Functions) WithAnnotation(name string, l interface{}) []interface{}

WithAnnotation returns the list l filtered to those items with the specified annotation.

func (*Functions) WithoutAnnotation 

func (*Functions) WithoutAnnotation(name string, l interface{}) []interface{}

WithoutAnnotation returns the list l filtered to those items without the specified annotation.

func (*Functions) Write 

func (f *Functions) Write(fileName string, value string) (string, error)

Write takes a string and writes it into the specified file. The filename is relative to the output directory.

type Options 

type Options struct {
	Dir     string
	APIFile string
	Loader  func(filename string) ([]byte, error)
	Funcs   template.FuncMap
	Globals []string
	Tracer  string
}

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