Function resolveFromFileContent

internal/diff/resolver.go:238–283

resolveFromFileContent scans the new file content line-by-line for consecutive matches of the normalized existing_code.

(d *model.Diff, cm *model.LlmComment)

// resolveFromFileContent scans the new file content line-by-line for consecutive
// matches of the normalized existing_code.
func resolveFromFileContent(d *model.Diff, cm *model.LlmComment) bool {
	if d.NewFileContent == "" {
		return false
	}

	fileLines := strings.Split(d.NewFileContent, "\n")
	targetLines := splitAndNormalize(cm.ExistingCode)
	if len(targetLines) == 0 {
		return false
	}

	// Normalize file lines the same way as target: skip blanks so that
	// blank lines in the source don't break the sliding-window match.
	// "Consecutive" here means adjacent non-blank lines.
	normalizedFileLines := make([]string, 0, len(fileLines))
	fileLineNums := make([]int, 0, len(fileLines))
	for i, line := range fileLines {
		n := normalizeLine(strings.TrimRight(line, "\r"))
		if n == "" {
			continue
		}
		normalizedFileLines = append(normalizedFileLines, n)
		fileLineNums = append(fileLineNums, i+1)
	}

	if len(normalizedFileLines) < len(targetLines) {
		return false
	}

	for i := 0; i <= len(normalizedFileLines)-len(targetLines); i++ {
		matched := true
		for j, target := range targetLines {
			if normalizedFileLines[i+j] != target {
				matched = false
				break
			}
		}
		if matched {
			cm.StartLine = fileLineNums[i]
			cm.EndLine = fileLineNums[i+len(targetLines)-1]
			return true
		}
	}

	return false
}

// splitAndNormalize splits code text into lines and normalizes each one.
func splitAndNormalize(code string) []string {