parser

Documentation

Index

• Constants
• Variables
• func SwapLeadingInfix(from, to *ast.Meta)
• func SwapLeadingTrailing(from, to *ast.Meta)
• type CustomParser
• type ParseError
  • func DuplicateCase(m *ast.Meta) *ParseError
  • func EmptySwitch(m *ast.Meta) *ParseError
  • func FinalFallthrough(m *ast.Meta) *ParseError
  • func InvalidEscape(m *ast.Meta, msg string) *ParseError
  • func MissingColon(m *ast.Meta) *ParseError
  • func MissingSemicolon(m *ast.Meta) *ParseError
  • func MultipleDefaults(m *ast.Meta) *ParseError
  • func TypeConversionError(m *ast.Meta, tt string) *ParseError
  • func UndefinedPrefix(m *ast.Meta) *ParseError
  • func UnexpectedToken(m *ast.Meta, expects ...string) *ParseError
  • func (e *ParseError) Error() string
  • func (e *ParseError) ErrorToken() token.Token
• type Parser
  • func New(l *lexer.Lexer, opts ...ParserOption) *Parser
  • func (p *Parser) CurToken() *ast.Meta
  • func (p *Parser) CurTokenIs(t token.TokenType) bool
  • func (p *Parser) ExpectPeek(t token.TokenType) bool
  • func (p *Parser) NextToken()
  • func (p *Parser) Parse() (ast.Statement, error)
  • func (p *Parser) ParseAclCidr() (*ast.AclCidr, error)
  • func (p *Parser) ParseAclDeclaration() (*ast.AclDeclaration, error)
  • func (p *Parser) ParseAddStatement() (*ast.AddStatement, error)
  • func (p *Parser) ParseAnotherIfStatement(keyword string) (*ast.IfStatement, error)
  • func (p *Parser) ParseBackendDeclaration() (*ast.BackendDeclaration, error)
  • func (p *Parser) ParseBackendProperty() (*ast.BackendProperty, error)
  • func (p *Parser) ParseBlockStatement() (*ast.BlockStatement, error)
  • func (p *Parser) ParseBoolean() *ast.Boolean
  • func (p *Parser) ParseBreakStatement() (*ast.BreakStatement, error)
  • func (p *Parser) ParseCallStatement() (*ast.CallStatement, error)
  • func (p *Parser) ParseCaseStatement() (*ast.CaseStatement, error)
  • func (p *Parser) ParseCustomToken() (ast.CustomStatement, error)
  • func (p *Parser) ParseDeclareStatement() (*ast.DeclareStatement, error)
  • func (p *Parser) ParseDirectorBackend() (ast.Expression, error)
  • func (p *Parser) ParseDirectorDeclaration() (*ast.DirectorDeclaration, error)
  • func (p *Parser) ParseDirectorProperty() (ast.Expression, error)
  • func (p *Parser) ParseErrorStatement() (*ast.ErrorStatement, error)
  • func (p *Parser) ParseEsiStatement() (*ast.EsiStatement, error)
  • func (p *Parser) ParseExpression(precedence int) (ast.Expression, error)
  • func (p *Parser) ParseFallthroughStatement() (*ast.FallthroughStatement, error)
  • func (p *Parser) ParseFloat() (*ast.Float, error)
  • func (p *Parser) ParseFunctionArgumentExpressions() ([]ast.Expression, error)
  • func (p *Parser) ParseFunctionCall() (*ast.FunctionCallStatement, error)
  • func (p *Parser) ParseFunctionCallExpression(fn ast.Expression) (ast.Expression, error)
  • func (p *Parser) ParseGotoDestination() (*ast.GotoDestinationStatement, error)
  • func (p *Parser) ParseGotoStatement() (*ast.GotoStatement, error)
  • func (p *Parser) ParseGroupedExpression() (*ast.GroupedExpression, error)
  • func (p *Parser) ParseIP() *ast.IP
  • func (p *Parser) ParseIdent() *ast.Ident
  • func (p *Parser) ParseIfExpression() (*ast.IfExpression, error)
  • func (p *Parser) ParseIfStatement() (*ast.IfStatement, error)
  • func (p *Parser) ParseImportStatement() (*ast.ImportStatement, error)
  • func (p *Parser) ParseIncludeStatement() (ast.Statement, error)
  • func (p *Parser) ParseInfixExpression(left ast.Expression) (ast.Expression, error)
  • func (p *Parser) ParseInfixStringConcatExpression(left ast.Expression) (ast.Expression, error)
  • func (p *Parser) ParseInteger() (*ast.Integer, error)
  • func (p *Parser) ParseLogStatement() (*ast.LogStatement, error)
  • func (p *Parser) ParsePenaltyboxDeclaration() (*ast.PenaltyboxDeclaration, error)
  • func (p *Parser) ParsePostfixExpression(left ast.Expression) (ast.Expression, error)
  • func (p *Parser) ParsePrefixExpression() (*ast.PrefixExpression, error)
  • func (p *Parser) ParseRTime() (*ast.RTime, error)
  • func (p *Parser) ParseRatecounterDeclaration() (*ast.RatecounterDeclaration, error)
  • func (p *Parser) ParseRemoveStatement() (*ast.RemoveStatement, error)
  • func (p *Parser) ParseRestartStatement() (*ast.RestartStatement, error)
  • func (p *Parser) ParseReturnStatement() (*ast.ReturnStatement, error)
  • func (p *Parser) ParseSetStatement() (*ast.SetStatement, error)
  • func (p *Parser) ParseSnippetVCL() ([]ast.Statement, error)
  • func (p *Parser) ParseStatement() (ast.Statement, error)
  • func (p *Parser) ParseString() (*ast.String, error)
  • func (p *Parser) ParseSubroutineDeclaration() (*ast.SubroutineDeclaration, error)
  • func (p *Parser) ParseSwitchStatement() (*ast.SwitchStatement, error)
  • func (p *Parser) ParseSyntheticBase64Statement() (*ast.SyntheticBase64Statement, error)
  • func (p *Parser) ParseSyntheticStatement() (*ast.SyntheticStatement, error)
  • func (p *Parser) ParseTableDeclaration() (*ast.TableDeclaration, error)
  • func (p *Parser) ParseTableProperty() (*ast.TableProperty, error)
  • func (p *Parser) ParseUnsetStatement() (*ast.UnsetStatement, error)
  • func (p *Parser) ParseVCL() (*ast.VCL, error)
  • func (p *Parser) PeekToken() *ast.Meta
  • func (p *Parser) PeekTokenIs(t token.TokenType) bool
  • func (p *Parser) PrevTokenIs(t token.TokenType) bool
  • func (p *Parser) ReadPeek()
  • func (p *Parser) Trailing() ast.Comments
• type ParserOption
  • func WithCustomParser(cps ...CustomParser) ParserOption

Constants

const (
	LOWEST int = iota + 1
	OR
	AND
	REGEX
	EQUALS
	LESS_GREATER
	CONCAT
	PREFIX
	POSTFIX
	CALL
)

Reference: https://developer.fastly.com/reference/vcl/operators/

Variables

var NULLbyte = errors.New("NULL")

Sentinel error for indicating the presence of a NULL byte or zero code point in an escape.

Functions

func SwapLeadingInfix

func SwapLeadingInfix(from, to *ast.Meta)

func SwapLeadingTrailing

func SwapLeadingTrailing(from, to *ast.Meta)

Comment control helper

Types

type CustomParser

type CustomParser interface {
	Literal() string
	Parse(*Parser) (ast.CustomStatement, error)
}

type ParseError

type ParseError struct {
	Token   token.Token
	Message string
}

func DuplicateCase

func DuplicateCase(m *ast.Meta) *ParseError

func EmptySwitch

func EmptySwitch(m *ast.Meta) *ParseError

func FinalFallthrough

func FinalFallthrough(m *ast.Meta) *ParseError

func InvalidEscape

func InvalidEscape(m *ast.Meta, msg string) *ParseError

func MissingColon

func MissingColon(m *ast.Meta) *ParseError

func MissingSemicolon

func MissingSemicolon(m *ast.Meta) *ParseError

func MultipleDefaults

func MultipleDefaults(m *ast.Meta) *ParseError

func TypeConversionError

func TypeConversionError(m *ast.Meta, tt string) *ParseError

func UndefinedPrefix

func UndefinedPrefix(m *ast.Meta) *ParseError

func UnexpectedToken

func UnexpectedToken(m *ast.Meta, expects ...string) *ParseError

func (*ParseError) Error

func (e *ParseError) Error() string

func (*ParseError) ErrorToken

func (e *ParseError) ErrorToken() token.Token

type Parser

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

func New

func New(l *lexer.Lexer, opts ...ParserOption) *Parser

func (*Parser) CurToken

func (p *Parser) CurToken() *ast.Meta

func (*Parser) CurTokenIs

func (p *Parser) CurTokenIs(t token.TokenType) bool

func (*Parser) ExpectPeek

func (p *Parser) ExpectPeek(t token.TokenType) bool

func (*Parser) NextToken

func (p *Parser) NextToken()

func (*Parser) Parse

func (p *Parser) Parse() (ast.Statement, error)

func (*Parser) ParseAclCidr

func (p *Parser) ParseAclCidr() (*ast.AclCidr, error)

func (*Parser) ParseAclDeclaration

func (p *Parser) ParseAclDeclaration() (*ast.AclDeclaration, error)

func (*Parser) ParseAddStatement

func (p *Parser) ParseAddStatement() (*ast.AddStatement, error)

func (*Parser) ParseAnotherIfStatement

func (p *Parser) ParseAnotherIfStatement(keyword string) (*ast.IfStatement, error)

AnotherIfStatement is similar to IfStatement but is not culious about alternative.

func (*Parser) ParseBackendDeclaration

func (p *Parser) ParseBackendDeclaration() (*ast.BackendDeclaration, error)

func (*Parser) ParseBackendProperty

func (p *Parser) ParseBackendProperty() (*ast.BackendProperty, error)

func (*Parser) ParseBlockStatement

func (p *Parser) ParseBlockStatement() (*ast.BlockStatement, error)

func (*Parser) ParseBoolean

func (p *Parser) ParseBoolean() *ast.Boolean

nolint: unparam

func (*Parser) ParseBreakStatement

func (p *Parser) ParseBreakStatement() (*ast.BreakStatement, error)

func (*Parser) ParseCallStatement

func (p *Parser) ParseCallStatement() (*ast.CallStatement, error)

func (*Parser) ParseCaseStatement

func (p *Parser) ParseCaseStatement() (*ast.CaseStatement, error)

func (*Parser) ParseCustomToken

func (p *Parser) ParseCustomToken() (ast.CustomStatement, error)

func (*Parser) ParseDeclareStatement

func (p *Parser) ParseDeclareStatement() (*ast.DeclareStatement, error)

func (*Parser) ParseDirectorBackend

func (p *Parser) ParseDirectorBackend() (ast.Expression, error)

func (*Parser) ParseDirectorDeclaration

func (p *Parser) ParseDirectorDeclaration() (*ast.DirectorDeclaration, error)

func (*Parser) ParseDirectorProperty

func (p *Parser) ParseDirectorProperty() (ast.Expression, error)

func (*Parser) ParseErrorStatement

func (p *Parser) ParseErrorStatement() (*ast.ErrorStatement, error)

func (*Parser) ParseEsiStatement

func (p *Parser) ParseEsiStatement() (*ast.EsiStatement, error)

func (*Parser) ParseExpression

func (p *Parser) ParseExpression(precedence int) (ast.Expression, error)

func (*Parser) ParseFallthroughStatement

func (p *Parser) ParseFallthroughStatement() (*ast.FallthroughStatement, error)

func (*Parser) ParseFloat

func (p *Parser) ParseFloat() (*ast.Float, error)

func (*Parser) ParseFunctionArgumentExpressions

func (p *Parser) ParseFunctionArgumentExpressions() ([]ast.Expression, error)

func (*Parser) ParseFunctionCall

func (p *Parser) ParseFunctionCall() (*ast.FunctionCallStatement, error)

func (*Parser) ParseFunctionCallExpression

func (p *Parser) ParseFunctionCallExpression(fn ast.Expression) (ast.Expression, error)

func (*Parser) ParseGotoDestination

func (p *Parser) ParseGotoDestination() (*ast.GotoDestinationStatement, error)

func (*Parser) ParseGotoStatement

func (p *Parser) ParseGotoStatement() (*ast.GotoStatement, error)

func (*Parser) ParseGroupedExpression

func (p *Parser) ParseGroupedExpression() (*ast.GroupedExpression, error)

func (*Parser) ParseIP

func (p *Parser) ParseIP() *ast.IP

func (*Parser) ParseIdent

func (p *Parser) ParseIdent() *ast.Ident

func (*Parser) ParseIfExpression

func (p *Parser) ParseIfExpression() (*ast.IfExpression, error)

func (*Parser) ParseIfStatement

func (p *Parser) ParseIfStatement() (*ast.IfStatement, error)

func (*Parser) ParseImportStatement

func (p *Parser) ParseImportStatement() (*ast.ImportStatement, error)

func (*Parser) ParseIncludeStatement

func (p *Parser) ParseIncludeStatement() (ast.Statement, error)

func (*Parser) ParseInfixExpression

func (p *Parser) ParseInfixExpression(left ast.Expression) (ast.Expression, error)

func (*Parser) ParseInfixStringConcatExpression

func (p *Parser) ParseInfixStringConcatExpression(left ast.Expression) (ast.Expression, error)

func (*Parser) ParseInteger

func (p *Parser) ParseInteger() (*ast.Integer, error)

func (*Parser) ParseLogStatement

func (p *Parser) ParseLogStatement() (*ast.LogStatement, error)

func (*Parser) ParsePenaltyboxDeclaration

func (p *Parser) ParsePenaltyboxDeclaration() (*ast.PenaltyboxDeclaration, error)

func (*Parser) ParsePostfixExpression

func (p *Parser) ParsePostfixExpression(left ast.Expression) (ast.Expression, error)

func (*Parser) ParsePrefixExpression

func (p *Parser) ParsePrefixExpression() (*ast.PrefixExpression, error)

func (*Parser) ParseRTime

func (p *Parser) ParseRTime() (*ast.RTime, error)

func (*Parser) ParseRatecounterDeclaration

func (p *Parser) ParseRatecounterDeclaration() (*ast.RatecounterDeclaration, error)

func (*Parser) ParseRemoveStatement

func (p *Parser) ParseRemoveStatement() (*ast.RemoveStatement, error)

func (*Parser) ParseRestartStatement

func (p *Parser) ParseRestartStatement() (*ast.RestartStatement, error)

func (*Parser) ParseReturnStatement

func (p *Parser) ParseReturnStatement() (*ast.ReturnStatement, error)

func (*Parser) ParseSetStatement

func (p *Parser) ParseSetStatement() (*ast.SetStatement, error)

func (*Parser) ParseSnippetVCL

func (p *Parser) ParseSnippetVCL() ([]ast.Statement, error)

ParseSnippetVCL is used for snippet parsing. VCL snippet is a piece of vcl code so we should Parse like BlockStatement inside, and returns slice of statement.

func (*Parser) ParseStatement

func (p *Parser) ParseStatement() (ast.Statement, error)

func (*Parser) ParseString

func (p *Parser) ParseString() (*ast.String, error)

func (*Parser) ParseSubroutineDeclaration

func (p *Parser) ParseSubroutineDeclaration() (*ast.SubroutineDeclaration, error)

func (*Parser) ParseSwitchStatement

func (p *Parser) ParseSwitchStatement() (*ast.SwitchStatement, error)

func (*Parser) ParseSyntheticBase64Statement

func (p *Parser) ParseSyntheticBase64Statement() (*ast.SyntheticBase64Statement, error)

func (*Parser) ParseSyntheticStatement

func (p *Parser) ParseSyntheticStatement() (*ast.SyntheticStatement, error)

func (*Parser) ParseTableDeclaration

func (p *Parser) ParseTableDeclaration() (*ast.TableDeclaration, error)

func (*Parser) ParseTableProperty

func (p *Parser) ParseTableProperty() (*ast.TableProperty, error)

func (*Parser) ParseUnsetStatement

func (p *Parser) ParseUnsetStatement() (*ast.UnsetStatement, error)

func (*Parser) ParseVCL

func (p *Parser) ParseVCL() (*ast.VCL, error)

func (*Parser) PeekToken

func (p *Parser) PeekToken() *ast.Meta

func (*Parser) PeekTokenIs

func (p *Parser) PeekTokenIs(t token.TokenType) bool

func (*Parser) PrevTokenIs

func (p *Parser) PrevTokenIs(t token.TokenType) bool

func (*Parser) ReadPeek

func (p *Parser) ReadPeek()

func (*Parser) Trailing

func (p *Parser) Trailing() ast.Comments

type ParserOption

type ParserOption func(p *Parser)

func WithCustomParser

func WithCustomParser(cps ...CustomParser) ParserOption