101 lines
3.0 KiB
Go
101 lines
3.0 KiB
Go
package scanner
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import (
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"strings"
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"unicode"
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"unicode/utf8"
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"github.com/microsoft/typescript-go/internal/ast"
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"github.com/microsoft/typescript-go/internal/core"
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"github.com/microsoft/typescript-go/internal/debug"
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)
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func tokenIsIdentifierOrKeyword(token ast.Kind) bool {
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return token >= ast.KindIdentifier
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}
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func IdentifierToKeywordKind(node *ast.Identifier) ast.Kind {
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return textToKeyword[node.Text]
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}
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func GetSourceTextOfNodeFromSourceFile(sourceFile *ast.SourceFile, node *ast.Node, includeTrivia bool) string {
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return GetTextOfNodeFromSourceText(sourceFile.Text(), node, includeTrivia)
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}
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func GetTextOfNodeFromSourceText(sourceText string, node *ast.Node, includeTrivia bool) string {
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if ast.NodeIsMissing(node) {
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return ""
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}
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pos := node.Pos()
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if !includeTrivia {
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pos = SkipTrivia(sourceText, pos)
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}
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text := sourceText[pos:node.End()]
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if node.Flags&ast.NodeFlagsReparserTransformedLiteral != 0 {
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// This is similar to `getLiteralTextOfNode` in the printer, but without the context of an `emitContext` to provide overrides
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if ast.IsStringLiteral(node) {
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if node.AsStringLiteral().TokenFlags&ast.TokenFlagsSingleQuote != 0 {
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return "'" + text + "'"
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}
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return "\"" + text + "\""
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} else if ast.IsIdentifier(node) {
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return node.Text()
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}
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// Only the above node kinds are currently transformed into one another by the reparser, requiring the textual remapping.
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// (Any reamppings done by emit transforms are handled by `getLiteralTextOfNode` in the printer)
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// Fail on any other kinds.
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debug.FailBadSyntaxKind(node, "Unexpected reparser-transformed node kind")
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}
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// if (isJSDocTypeExpressionOrChild(node)) {
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// // strip space + asterisk at line start
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// text = text.split(/\r\n|\n|\r/).map(line => line.replace(/^\s*\*/, "").trimStart()).join("\n");
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// }
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return text
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}
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func GetTextOfNode(node *ast.Node) string {
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return GetSourceTextOfNodeFromSourceFile(ast.GetSourceFileOfNode(node), node, false /*includeTrivia*/)
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}
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func GetTextOfJSDocComment(comment *ast.NodeList) string {
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if comment == nil {
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return ""
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}
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var b strings.Builder
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for _, n := range comment.Nodes {
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switch n.Kind {
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case ast.KindJSDocText:
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b.WriteString(n.Text())
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case ast.KindJSDocLink, ast.KindJSDocLinkCode, ast.KindJSDocLinkPlain:
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b.WriteString(GetTextOfNode(n))
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}
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}
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return strings.TrimRightFunc(b.String(), unicode.IsSpace)
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}
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func DeclarationNameToString(name *ast.Node) string {
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if name == nil || name.Pos() == name.End() {
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return "(Missing)"
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}
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return GetTextOfNode(name)
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}
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func IsIdentifierText(name string, languageVariant core.LanguageVariant) bool {
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ch, size := utf8.DecodeRuneInString(name)
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if !IsIdentifierStart(ch) {
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return false
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}
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for i := size; i < len(name); {
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ch, size = utf8.DecodeRuneInString(name[i:])
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if !IsIdentifierPartEx(ch, languageVariant) {
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return false
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}
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i += size
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}
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return true
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}
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func IsIntrinsicJsxName(name string) bool {
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return len(name) != 0 && (name[0] >= 'a' && name[0] <= 'z' || strings.ContainsRune(name, '-'))
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}
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