ast

Documentation

Index

• func ParamFuncArgToInt(a ParamFuncArg) (int, error)
• type ParamFunc
• type ParamFuncArg
• type ParamStatement
• type ParamType
  • func LookupParamType(ident string) ParamType

Functions

func ParamFuncArgToInt

func ParamFuncArgToInt(a ParamFuncArg) (int, error)

ParamFuncArgToInt converts and returns any type of "a", to an integer.

Types

type ParamFunc

type ParamFunc struct {
	Name string         // range
	Args []ParamFuncArg // [1,5]
}

ParamFunc holds the name of a parameter's function and its arguments (values) A param func is declared with: {param:int range(1,5)}, the range is the param function name the 1 and 5 are the two param function arguments range(1,5)

type ParamFuncArg

type ParamFuncArg interface{}

ParamFuncArg represents a single parameter function's argument

type ParamStatement

type ParamStatement struct {
	Src       string      // the original unparsed source, i.e: {id:int range(1,5) else 404}
	Name      string      // id
	Type      ParamType   // int
	Funcs     []ParamFunc // range
	ErrorCode int         // 404
}

ParamStatement is a struct which holds all the necessary information about a macro parameter. It holds its type (string, int, alphabetical, file, path), its source ({param:type}), its name ("param"), its attached functions by the user (min, max...) and the http error code if that parameter failed to be evaluated.

type ParamType

type ParamType uint8

ParamType is a specific uint8 type which holds the parameter types' type.

const (
	// ParamTypeUnExpected is an unexpected parameter type.
	ParamTypeUnExpected ParamType = iota
	// ParamTypeString 	is the string type.
	// If parameter type is missing then it defaults to String type.
	// Allows anything
	// Declaration: /mypath/{myparam:string} or /mypath{myparam}
	ParamTypeString
	// ParamTypeInt is the integer, a number type.
	// Allows only numbers (0-9)
	// Declaration: /mypath/{myparam:int}
	ParamTypeInt
	// ParamTypeLong is the integer, a number type.
	// Allows only numbers (0-9)
	// Declaration: /mypath/{myparam:long}
	ParamTypeLong
	// ParamTypeAlphabetical is the  alphabetical/letter type type.
	// Allows letters only (upper or lowercase)
	// Declaration:  /mypath/{myparam:alphabetical}
	ParamTypeAlphabetical
	// ParamTypeFile  is the file single path type.
	// Allows:
	// letters (upper or lowercase)
	// numbers (0-9)
	// underscore (_)
	// dash (-)
	// point (.)
	// no spaces! or other character
	// Declaration: /mypath/{myparam:file}
	ParamTypeFile
	// ParamTypePath is the multi path (or wildcard) type.
	// Allows anything, should be the last part
	// Declaration: /mypath/{myparam:path}
	ParamTypePath
)

func LookupParamType

func LookupParamType(ident string) ParamType

LookupParamType accepts the string representation of a parameter type. Available: "string" "int" "alphabetical" "file" "path"