Method createDiagnosticFromError

pkg/lsp/handler.go:438–505

createDiagnosticFromError creates a diagnostic from an error

(content string, err error, defaultLine int)

// createDiagnosticFromError creates a diagnostic from an error
func (h *Handler) createDiagnosticFromError(content string, err error, defaultLine int) Diagnostic {
	var line, char int
	var code interface{}
	errMsg := err.Error()

	// Extract position from recovery ParseError if available
	if pe, ok := err.(*parser.ParseError); ok {
		line = pe.Line - 1
		if line < 0 {
			line = 0
		}
		char = pe.Column - 1
		if char < 0 {
			char = 0
		}
		errMsg = pe.Msg
	} else if e, ok := err.(*errors.Error); ok {
		// Use position from structured error (convert to 0-based)
		line = e.Location.Line - 1
		if line < 0 {
			line = 0
		}
		char = e.Location.Column - 1
		if char < 0 {
			char = 0
		}
		// Extract error code
		code = string(e.Code)
		// Use the cleaner message without context
		errMsg = e.Message
	} else {
		// Fallback to regex extraction for non-structured errors
		line, char = extractPositionFromError(errMsg, content, defaultLine)
	}

	// Calculate end position (end of line or reasonable span)
	lines := strings.Split(content, "\n")
	endChar := char + 1
	if line < len(lines) {
		// Extend to end of word or reasonable span
		lineContent := lines[line]
		if char < len(lineContent) {
			// Find end of current word/token
			end := char
			for end < len(lineContent) && !isWhitespace(lineContent[end]) {
				end++
			}
			if end > char {
				endChar = end
			} else {
				endChar = len(lineContent)
			}
		} else {
			endChar = len(lineContent)
		}
	}

	return Diagnostic{