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package main
import "strings"
func (f *Formatter) rewrite(formattedSource []byte, lineInformationMap map[int]*lineInformation) []byte {
sourceLines := strings.Split(string(formattedSource), "\n")
resultLines := make([]string, 0, len(sourceLines))
previousWasOpenBrace := false
previousStatementType := ""
previousWasComment := false
previousWasTopLevel := false
previousWasScoped := false
insideRawString := false
for lineIndex, currentLine := range sourceLines {
backtickCount := countRawStringDelimiters(currentLine)
wasInsideRawString := insideRawString
if backtickCount%2 == 1 {
insideRawString = !insideRawString
}
if wasInsideRawString {
resultLines = append(resultLines, currentLine)
continue
}
lineNumber := lineIndex + 1
trimmedLine := strings.TrimSpace(currentLine)
if trimmedLine == "" {
continue
}
isClosingBraceLine := isClosingBrace(currentLine)
isOpeningBraceLine := isOpeningBrace(currentLine)
isCaseLabelLine := isCaseLabel(currentLine)
isCommentOnlyLine := isCommentOnly(currentLine)
isPackageDeclaration := isPackageLine(trimmedLine)
currentInformation := lineInformationMap[lineNumber]
currentStatementType := ""
if currentInformation != nil {
currentStatementType = currentInformation.statementType
}
if isPackageDeclaration {
currentStatementType = "package"
}
needsBlankLine := false
currentIsTopLevel := currentInformation != nil && currentInformation.isTopLevel
currentIsScoped := currentInformation != nil && currentInformation.isScoped
if len(resultLines) > 0 && !previousWasOpenBrace && !isClosingBraceLine && !isCaseLabelLine {
if currentIsTopLevel && previousWasTopLevel && currentStatementType != previousStatementType {
if f.CommentMode == CommentsFollow && previousWasComment {
} else {
needsBlankLine = true
}
} else if currentInformation != nil && (currentIsScoped || previousWasScoped) {
if f.CommentMode == CommentsFollow && previousWasComment {
} else {
needsBlankLine = true
}
} else if currentStatementType != "" && previousStatementType != "" && currentStatementType != previousStatementType {
if f.CommentMode == CommentsFollow && previousWasComment {
} else {
needsBlankLine = true
}
}
if f.CommentMode == CommentsFollow && isCommentOnlyLine && !previousWasComment {
nextLineNumber := f.findNextNonCommentLine(sourceLines, lineIndex+1)
if nextLineNumber > 0 {
nextInformation := lineInformationMap[nextLineNumber]
if nextInformation != nil {
nextIsTopLevel := nextInformation.isTopLevel
nextIsScoped := nextInformation.isScoped
if nextIsTopLevel && previousWasTopLevel && nextInformation.statementType != previousStatementType {
needsBlankLine = true
} else if nextIsScoped || previousWasScoped {
needsBlankLine = true
} else if nextInformation.statementType != "" && previousStatementType != "" && nextInformation.statementType != previousStatementType {
needsBlankLine = true
}
}
}
}
}
if needsBlankLine {
resultLines = append(resultLines, "")
}
resultLines = append(resultLines, currentLine)
previousWasOpenBrace = isOpeningBraceLine || isCaseLabelLine
previousWasComment = isCommentOnlyLine
if currentInformation != nil {
previousStatementType = currentInformation.statementType
previousWasTopLevel = currentInformation.isTopLevel
previousWasScoped = currentInformation.isScoped
} else if currentStatementType != "" {
previousStatementType = currentStatementType
previousWasTopLevel = false
previousWasScoped = false
}
}
outputString := strings.Join(resultLines, "\n")
if !strings.HasSuffix(outputString, "\n") {
outputString += "\n"
}
return []byte(outputString)
}
func (f *Formatter) findNextNonCommentLine(sourceLines []string, startLineIndex int) int {
for lineIndex := startLineIndex; lineIndex < len(sourceLines); lineIndex++ {
trimmedLine := strings.TrimSpace(sourceLines[lineIndex])
if trimmedLine == "" {
continue
}
if isCommentOnly(sourceLines[lineIndex]) {
continue
}
return lineIndex + 1
}
return 0
}
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