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util.go
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768 lines (663 loc) · 30.7 KB
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package javascript
import (
"html"
"strconv"
"strings"
"vimagination.zapto.org/parser"
)
func unquoteEscape(ret *strings.Builder, s *parser.Tokeniser) bool {
ret.WriteString(s.Get())
s.Accept("\\")
s.Get()
if s.Accept("x") {
s.Get()
if !s.Accept(hexDigit) || !s.Accept(hexDigit) {
return false
}
c, _ := strconv.ParseUint(s.Get(), 16, 8)
ret.WriteString(string(rune(c)))
} else if s.Accept("u") {
s.Get()
if s.Accept("{") {
s.Get()
if !s.Accept(hexDigit) {
return false
}
s.AcceptRun(hexDigit)
c, _ := strconv.ParseUint(s.Get(), 16, 8)
ret.WriteString(string(rune(c)))
if !s.Accept("}") {
return false
}
s.Get()
} else if !s.Accept(hexDigit) || !s.Accept(hexDigit) || !s.Accept(hexDigit) || !s.Accept(hexDigit) {
return false
} else {
c, _ := strconv.ParseUint(s.Get(), 16, 8)
ret.WriteString(string(rune(c)))
}
} else if s.Accept("0") {
if s.Accept(decimalDigit) {
return false
}
s.Get()
ret.WriteString("\000")
} else if s.Accept(singleEscapeChar) {
switch s.Get() {
case "'":
ret.WriteString(singleEscapeChar[0:1])
case "\"":
ret.WriteString(singleEscapeChar[1:2])
case "\\":
ret.WriteString(singleEscapeChar[2:3])
case "b":
ret.WriteString("\b")
case "f":
ret.WriteString("\f")
case "n":
ret.WriteString("\n")
case "r":
ret.WriteString("\r")
case "t":
ret.WriteString("\t")
case "v":
ret.WriteString("\v")
}
} else {
s.Get()
s.Except("")
ret.WriteString(s.Get())
}
return true
}
// Unquote parses a JavaScript quoted string and produces the unquoted version
func Unquote(str string) (string, error) {
s := parser.NewStringTokeniser(str)
var chars string
if s.Accept("\"") {
chars = doubleStringChars
} else if s.Accept("'") {
chars = singleStringChars
} else {
return "", ErrInvalidQuoted
}
s.Get()
var ret strings.Builder
ret.Grow(len(str))
Loop:
for {
switch s.ExceptRun(chars) {
case '"', '\'':
ret.WriteString(s.Get())
return ret.String(), nil
case '\\':
if !unquoteEscape(&ret, &s) {
break Loop
}
default:
break Loop
}
}
return "", ErrInvalidQuoted
}
// UnquoteTemplate parses a JavaScript template (either NoSubstitution Template, or any template part),
// and produces the unquoted version.
func UnquoteTemplate(t string) (string, error) {
if strings.HasPrefix(t, "`") || strings.HasPrefix(t, "}") {
t = t[1:]
} else {
return "", ErrInvalidQuoted
}
if strings.HasSuffix(t, "`") {
t = t[:len(t)-1]
} else if strings.HasSuffix(t, "${") {
t = t[:len(t)-2]
} else {
return "", ErrInvalidQuoted
}
s := parser.NewStringTokeniser(t)
var ret strings.Builder
ret.Grow(len(t))
Loop:
for {
switch s.ExceptRun("$`\\") {
case '$':
s.Except("")
if s.Accept("{") {
break Loop
}
case '\\':
if !unquoteEscape(&ret, &s) {
break Loop
}
case '`':
break Loop
default:
ret.WriteString(s.Get())
return ret.String(), nil
}
}
return "", ErrInvalidQuoted
}
// TemplateType determines the type of Template used in QuoteTemplate.
type TemplateType byte
const (
TemplateNoSubstitution TemplateType = iota
TemplateHead
TemplateMiddle
TemplateTail
)
// TokenTypeToTemplateType converts from a parser.TokenType to the appropriate
// TemplateType.
//
// Invalid TokenTypes return 255.
func TokenTypeToTemplateType(tokenType parser.TokenType) TemplateType {
switch tokenType {
case TokenNoSubstitutionTemplate:
return TemplateNoSubstitution
case TokenTemplateHead:
return TemplateHead
case TokenTemplateMiddle:
return TemplateMiddle
case TokenTemplateTail:
return TemplateTail
}
return 255
}
// QuoteTemplate creates a minimally quoted template string.
//
// templateType determines the prefix and suffix.
//
// | Template Type | Prefix | Suffix |
// |------------------------|----------|----------|
// | TemplateNoSubstitution | "`" | "`" |
// | TemplateHead | "`" | "${" |
// | TemplateMiddle | "}" | "}" |
// | TemplateTail | "}" | "`" |
func QuoteTemplate(t string, templateType TemplateType) string {
l := len(t) + 2
if templateType == TemplateHead || templateType == TemplateMiddle {
l++
}
for n, r := range t {
switch r {
case '$':
if len(t) > n && t[n+1] != '{' {
break
}
fallthrough
case '`', '\\':
l++
}
}
var ret strings.Builder
ret.Grow(l)
if templateType == TemplateMiddle || templateType == TemplateTail {
ret.WriteByte('}')
} else {
ret.WriteByte('`')
}
for n, r := range t {
switch r {
case '$':
if len(t) > n && t[n+1] != '{' {
break
}
fallthrough
case '`', '\\':
ret.WriteByte('\\')
}
ret.WriteRune(r)
}
if templateType == TemplateHead || templateType == TemplateMiddle {
ret.WriteString("${")
} else {
ret.WriteByte('`')
}
return ret.String()
}
// WrapConditional takes one of many types and wraps it in a
// *ConditionalExpression.
//
// The accepted types/pointers are as follows:
//
// ConditionalExpression
// LogicalORExpression
// LogicalANDExpression
// BitwiseORExpression
// BitwiseXORExpression
// BitwiseANDExpression
// EqualityExpression
// RelationalExpression
// ShiftExpression
// AdditiveExpression
// MultiplicativeExpression
// ExponentiationExpression
// UnaryExpression
// UpdateExpression
// LeftHandSideExpression
// CallExpression
// OptionalExpression
// NewExpression
// MemberExpression
// PrimaryExpression
// ArrayLiteral
// ObjectLiteral
// FunctionDeclaration (FunctionExpression)
// ClassDeclaration (ClassExpression)
// TemplateLiteral
// ParenthesizedExpression
// JSXElement
// JSXFragment
func WrapConditional(p ConditionalWrappable) *ConditionalExpression {
if c, ok := p.(*ConditionalExpression); ok {
return c
} else if c, ok := p.(ConditionalExpression); ok {
return &c
}
c := &ConditionalExpression{
LogicalORExpression: new(LogicalORExpression),
}
switch p := p.(type) {
case *LogicalORExpression:
c.LogicalORExpression = p
goto logicalORExpression
case LogicalORExpression:
c.LogicalORExpression = &p
goto logicalORExpression
case *LogicalANDExpression:
c.LogicalORExpression.LogicalANDExpression = *p
goto logicalANDExpression
case LogicalANDExpression:
c.LogicalORExpression.LogicalANDExpression = p
goto logicalANDExpression
case *BitwiseORExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression = *p
goto bitwiseORExpression
case BitwiseORExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression = p
goto bitwiseORExpression
case *BitwiseXORExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression = *p
goto bitwiseXORExpression
case BitwiseXORExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression = p
goto bitwiseXORExpression
case *BitwiseANDExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression = *p
goto bitwiseANDExpression
case BitwiseANDExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression = p
goto bitwiseANDExpression
case *EqualityExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression = *p
goto equalityExpression
case EqualityExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression = p
goto equalityExpression
case *RelationalExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression = *p
goto relationalExpression
case RelationalExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression = p
goto relationalExpression
case *ShiftExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression = *p
goto shiftExpression
case ShiftExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression = p
goto shiftExpression
case *AdditiveExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression = *p
goto additiveExpression
case AdditiveExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression = p
goto additiveExpression
case *MultiplicativeExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression = *p
goto multiplicativeExpression
case MultiplicativeExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression = p
goto multiplicativeExpression
case *ExponentiationExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression = *p
goto exponentiationExpression
case ExponentiationExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression = p
goto exponentiationExpression
case *UnaryExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression = *p
goto unaryExpression
case UnaryExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression = p
goto unaryExpression
case *UpdateExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression = *p
goto updateExpression
case UpdateExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression = p
goto updateExpression
case *LeftHandSideExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = p
case LeftHandSideExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &p
case *CallExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
CallExpression: p,
Tokens: p.Tokens,
}
case CallExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
CallExpression: &p,
Tokens: p.Tokens,
}
case *OptionalExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
OptionalExpression: p,
Tokens: p.Tokens,
}
case OptionalExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
OptionalExpression: &p,
Tokens: p.Tokens,
}
case *NewExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: p,
Tokens: p.Tokens,
}
case NewExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: &p,
Tokens: p.Tokens,
}
case *MemberExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: &NewExpression{
MemberExpression: *p,
Tokens: p.Tokens,
},
Tokens: p.Tokens,
}
case MemberExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: &NewExpression{
MemberExpression: p,
Tokens: p.Tokens,
},
Tokens: p.Tokens,
}
case *PrimaryExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: &NewExpression{
MemberExpression: MemberExpression{
PrimaryExpression: p,
Tokens: p.Tokens,
},
Tokens: p.Tokens,
},
Tokens: p.Tokens,
}
case PrimaryExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: &NewExpression{
MemberExpression: MemberExpression{
PrimaryExpression: &p,
Tokens: p.Tokens,
},
Tokens: p.Tokens,
},
Tokens: p.Tokens,
}
default:
pe := new(PrimaryExpression)
switch p := p.(type) {
case *ArrayLiteral:
pe.ArrayLiteral = p
pe.Tokens = p.Tokens
case ArrayLiteral:
pe.ArrayLiteral = &p
pe.Tokens = p.Tokens
case *ObjectLiteral:
pe.ObjectLiteral = p
pe.Tokens = p.Tokens
case ObjectLiteral:
pe.ObjectLiteral = &p
pe.Tokens = p.Tokens
case *FunctionDeclaration:
pe.FunctionExpression = p
pe.Tokens = p.Tokens
case FunctionDeclaration:
pe.FunctionExpression = &p
pe.Tokens = p.Tokens
case *ClassDeclaration:
pe.ClassExpression = p
pe.Tokens = p.Tokens
case ClassDeclaration:
pe.ClassExpression = &p
pe.Tokens = p.Tokens
case *TemplateLiteral:
pe.TemplateLiteral = p
pe.Tokens = p.Tokens
case TemplateLiteral:
pe.TemplateLiteral = &p
pe.Tokens = p.Tokens
case *ParenthesizedExpression:
pe.ParenthesizedExpression = p
pe.Tokens = p.Tokens
case ParenthesizedExpression:
pe.ParenthesizedExpression = &p
pe.Tokens = p.Tokens
case JSXElement:
pe.JSXElement = &p
pe.Tokens = p.Tokens
case *JSXElement:
pe.JSXElement = p
pe.Tokens = p.Tokens
case JSXFragment:
pe.JSXFragment = &p
pe.Tokens = p.Tokens
case *JSXFragment:
pe.JSXFragment = p
pe.Tokens = p.Tokens
}
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression = &LeftHandSideExpression{
NewExpression: &NewExpression{
MemberExpression: MemberExpression{
PrimaryExpression: pe,
Tokens: pe.Tokens,
},
Tokens: pe.Tokens,
},
Tokens: pe.Tokens,
}
}
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression.Tokens
updateExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.Tokens
unaryExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.Tokens
exponentiationExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.Tokens
multiplicativeExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.Tokens
additiveExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.Tokens
shiftExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.Tokens
relationalExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.Tokens
equalityExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.Tokens
bitwiseANDExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.Tokens
bitwiseXORExpression:
c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.Tokens
bitwiseORExpression:
c.LogicalORExpression.LogicalANDExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.Tokens
logicalANDExpression:
c.LogicalORExpression.Tokens = c.LogicalORExpression.LogicalANDExpression.Tokens
logicalORExpression:
c.Tokens = c.LogicalORExpression.Tokens
return c
}
// UnwrapConditional returns the first value up the ConditionalExpression chain
// that contains all of the information required to rebuild the lower chain.
//
// Possible returns types are as follows:
//
// *ConditionalExpression
// *LogicalORExpression
// *LogicalANDExpression
// *BitwiseORExpression
// *BitwiseXORExpression
// *BitwiseANDExpression
// *EqualityExpression
// *RelationalExpression
// *ShiftExpression
// *AdditiveExpression
// *MultiplicativeExpression
// *ExponentiationExpression
// *UnaryExpression
// *UpdateExpression
// *CallExpression
// *OptionalExpression
// *NewExpression
// *MemberExpression
// *PrimaryExpression
// *ArrayLiteral
// *ObjectLiteral
// *FunctionDeclaration (FunctionExpression)
// *ClassDeclaration (ClassExpression)
// *TemplateLiteral
// *ParenthesizedExpression
// *JSXElement
// *JSXFragment
func UnwrapConditional(c *ConditionalExpression) ConditionalWrappable {
if c == nil {
return nil
} else if c.True != nil || c.LogicalORExpression == nil {
return c
} else if c.LogicalORExpression.LogicalORExpression != nil {
return c.LogicalORExpression
} else if c.LogicalORExpression.LogicalANDExpression.LogicalANDExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseORExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseXORExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.BitwiseANDExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.EqualityExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.RelationalExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.ShiftExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.AdditiveExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.MultiplicativeExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.ExponentiationExpression != nil {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression
} else if len(c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UnaryOperators) > 0 {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression
} else if c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression == nil || c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.UpdateOperator != UpdateNone {
return &c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression
} else if lhs := c.LogicalORExpression.LogicalANDExpression.BitwiseORExpression.BitwiseXORExpression.BitwiseANDExpression.EqualityExpression.RelationalExpression.ShiftExpression.AdditiveExpression.MultiplicativeExpression.ExponentiationExpression.UnaryExpression.UpdateExpression.LeftHandSideExpression; lhs.CallExpression != nil {
return lhs.CallExpression
} else if lhs.OptionalExpression != nil {
return lhs.OptionalExpression
} else if len(lhs.NewExpression.News) > 0 {
return lhs.NewExpression
} else if lhs.NewExpression.MemberExpression.PrimaryExpression == nil {
return &lhs.NewExpression.MemberExpression
} else {
pe := lhs.NewExpression.MemberExpression.PrimaryExpression
if pe.ArrayLiteral != nil {
return pe.ArrayLiteral
} else if pe.ObjectLiteral != nil {
return pe.ObjectLiteral
} else if pe.FunctionExpression != nil {
return pe.FunctionExpression
} else if pe.ClassExpression != nil {
return pe.ClassExpression
} else if pe.TemplateLiteral != nil {
return pe.TemplateLiteral
} else if pe.ParenthesizedExpression != nil {
return pe.ParenthesizedExpression
} else if pe.JSXElement != nil {
return pe.JSXElement
} else if pe.JSXFragment != nil {
return pe.JSXFragment
}
return pe
}
}
// EscapeJSXString performs the minimal amount of replacement required to
// transform the given string to a valid JSXString.
func EscapeJSXString(str string) string {
var sb strings.Builder
sb.WriteByte('"')
s := parser.NewStringTokeniser(str)
Loop:
for {
c := s.ExceptRun(`&"`)
sb.WriteString(s.Get())
s.Next()
s.Get()
switch c {
case '"':
sb.WriteString(""")
case '&':
sb.WriteString("&")
case -1:
break Loop
}
}
sb.WriteByte('"')
return sb.String()
}
// EscapeJSXText performs the minimal amount of replacement required to
// transform the given string to a valid JSXText.
func EscapeJSXText(str string) string {
var sb strings.Builder
s := parser.NewStringTokeniser(str)
Loop:
for {
c := s.ExceptRun(`&{}<>`)
sb.WriteString(s.Get())
s.Next()
s.Get()
switch c {
case '&':
sb.WriteString("&")
case '<':
sb.WriteString("<")
case '>':
sb.WriteString(">")
case '{':
sb.WriteString("{")
case '}':
sb.WriteString("}")
case -1:
break Loop
}
}
return sb.String()
}
// UnescapeJSXString removes surrounding quotes/speech-marks and replaces all
// HTML entities with their referenced characters.
//
// It uses `html.UnescapeString` to perform the replacements.
func UnescapeJSXString(str string) (string, error) {
if len(str) < 2 || str[0] != '\'' && str[0] != '"' || str[len(str)-1] != str[0] || strings.ContainsRune(str[1:len(str)-1], rune(str[0])) {
return "", ErrInvalidQuoted
}
return html.UnescapeString(str[1 : len(str)-1]), nil
}
// UnescapeJSXText is a convenience function that calls `html.UnescapeString`
// on the passed string.
func UnescapeJSXText(str string) string {
return html.UnescapeString(str)
}