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package compat
import (
"strconv"
"strings"
"github.com/evanw/esbuild/internal/ast"
)
type v struct {
major uint16
minor uint8
patch uint8
}
type Semver struct {
// "1.2.3-alpha" => { Parts: {1, 2, 3}, PreRelease: "-alpha" }
Parts []int
PreRelease string
}
func (v Semver) String() string {
b := strings.Builder{}
for _, part := range v.Parts {
if b.Len() > 0 {
b.WriteRune('.')
}
b.WriteString(strconv.Itoa(part))
}
b.WriteString(v.PreRelease)
return b.String()
}
// Returns <0 if "a < b"
// Returns 0 if "a == b"
// Returns >0 if "a > b"
func compareVersions(a v, b Semver) int {
diff := int(a.major)
if len(b.Parts) > 0 {
diff -= b.Parts[0]
}
if diff == 0 {
diff = int(a.minor)
if len(b.Parts) > 1 {
diff -= b.Parts[1]
}
}
if diff == 0 {
diff = int(a.patch)
if len(b.Parts) > 2 {
diff -= b.Parts[2]
}
}
if diff == 0 && len(b.PreRelease) != 0 {
return 1 // "1.0.0" > "1.0.0-alpha"
}
return diff
}
// The start is inclusive and the end is exclusive
type versionRange struct {
start v
end v // Use 0.0.0 for "no end"
}
func isVersionSupported(ranges []versionRange, version Semver) bool {
for _, r := range ranges {
if compareVersions(r.start, version) <= 0 && (r.end == (v{}) || compareVersions(r.end, version) > 0) {
return true
}
}
return false
}
func SymbolFeature(kind ast.SymbolKind) JSFeature {
switch kind {
case ast.SymbolPrivateField:
return ClassPrivateField
case ast.SymbolPrivateMethod:
return ClassPrivateMethod
case ast.SymbolPrivateGet, ast.SymbolPrivateSet, ast.SymbolPrivateGetSetPair:
return ClassPrivateAccessor
case ast.SymbolPrivateStaticField:
return ClassPrivateStaticField
case ast.SymbolPrivateStaticMethod:
return ClassPrivateStaticMethod
case ast.SymbolPrivateStaticGet, ast.SymbolPrivateStaticSet, ast.SymbolPrivateStaticGetSetPair:
return ClassPrivateStaticAccessor
default:
return 0
}
}
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