expl

Documentation

Overview

* Package for goats-html expression language. * * Supported expressions: * - go-expr * - go-expr if (condition) * - go-expr if (condition) else go-expr * - go-expr if (condition) elif (condition) go-expr elif (condition) go-expr * - go-expr if (condition) elif (condition) elif (condition) go-expr else go-expr

Index

• type ExprHandler
  • func NewExprRewriter(symMgr *symbolmgr.SymbolMgr, pkgRefs pkgmgr.AliasReferer, format string) ExprHandler
• type ExprParser
  • func NewExprParser(eh ExprHandler) *ExprParser
  • func (ep *ExprParser) Evaluate(src string, w io.Writer, callback OnEvalExpr)
• type ExprRewriter
  • func (er *ExprRewriter) RewriteExpression(expr string) (string, error)
• type OnEvalExpr

Types

type ExprHandler

type ExprHandler interface {
	RewriteExpression(originalExpr string) (string, error)
}

ExprHandler represents any object which can rewrite an expression according to certain rules.

func NewExprRewriter

func NewExprRewriter(symMgr *symbolmgr.SymbolMgr, pkgRefs pkgmgr.AliasReferer, format string) ExprHandler

NewExprRewriter creates a new ExprRewriter for the given target format.

type ExprParser

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

func NewExprParser

func NewExprParser(eh ExprHandler) *ExprParser

func (*ExprParser) Evaluate

func (ep *ExprParser) Evaluate(src string, w io.Writer, callback OnEvalExpr)

type ExprRewriter

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

ExprRewriter parses an input expression and rewrite it according to the target lauguage format: - convert snake-case names to camel case for Go. - convert slices to slice function for closure library. - convert builtin functions to proper function call. - disallow non-builtin functions. - disallow 3-index slicing. - disallow vararg parameter passing. - register imports for Go.

func (*ExprRewriter) RewriteExpression

func (er *ExprRewriter) RewriteExpression(expr string) (string, error)

type OnEvalExpr

type OnEvalExpr func(expr string)