builder

Documentation

Overview

Package builder generates the parser code for a given grammar. It makes no attempt to verify the correctness of the grammar.

Index

• func BasicLatinLookup(chars, ranges []rune, unicodeClasses []string, ignoreCase bool) (basicLatinChars [128]bool)
• func BuildParser(w io.Writer, g *ast.Grammar, opts ...Option) error
• type Option
  • func BasicLatinLookupTable(basicLatinLookupTable bool) Option
  • func Nolint(nolint bool) Option
  • func Optimize(optimize bool) Option
  • func ReceiverName(nm string) Option

Functions

func BasicLatinLookup

func BasicLatinLookup(chars, ranges []rune, unicodeClasses []string, ignoreCase bool) (basicLatinChars [128]bool)

BasicLatinLookup calculates the decision results for the first 256 characters of the UTF-8 character set for a given set of chars, ranges and unicodeClasses to speedup the CharClassMatcher.

func BuildParser

func BuildParser(w io.Writer, g *ast.Grammar, opts ...Option) error

BuildParser builds the PEG parser using the provider grammar. The code is written to the specified w.

Types

type Option

type Option func(*builder) Option

Option is a function that can set an option on the builder. It returns the previous setting as an Option.

func BasicLatinLookupTable

func BasicLatinLookupTable(basicLatinLookupTable bool) Option

BasicLatinLookupTable returns an option that specifies the basicLatinLookup option If basicLatinLookup is true, a lookup slice for the first 128 chars of the Unicode table (Basic Latin) is generated for each CharClassMatcher to increase the character matching.

func Nolint

func Nolint(nolint bool) Option

Nolint returns an option that specifies the nolint option If nolint is true, special '// nolint: ...' comments are added to the generated parser to suppress warnings by gometalinter.

func Optimize

func Optimize(optimize bool) Option

Optimize returns an option that specifies the optimize option If optimize is true, the Debug and Memoize code is completely removed from the resulting parser

func ReceiverName

func ReceiverName(nm string) Option

ReceiverName returns an option that specifies the receiver name to use for the current struct (which is the struct on which all code blocks except the initializer are generated).