View Complexity

View Complexity

VIEW BODY COMPLEXITY (CRITICAL):

• If a View body grows beyond about 30 lines, extract sections into computed properties.
• If nesting is deeper than 3 levels, flatten the structure by extracting sub-sections.
• Prefer a body that reads like a table of contents:
  • headerSection
  • contentSection
  • footerSection

REQUIRED PATTERN:

var body: some View {
    VStack(spacing: AppTheme.Spacing.medium) {
        headerSection
        contentSection
        actionsSection
    }
}

private var headerSection: some View { ... }
private var contentSection: some View { ... }
private var actionsSection: some View { ... }

TYPE-CHECK TIMEOUT FIX:

• Error pattern: "The compiler is unable to type-check this expression in reasonable time"
• Fix by splitting large expressions:
  • Move long HStack/VStack/ZStack branches into computed properties
  • Move complex Chart blocks into computed properties
  • Move long modifier chains into intermediate variables/properties
• Keep behavior exactly the same; only refactor structure.

WHEN EDITING EXISTING FILES:

• If your new change pushes body size over the threshold, include the refactor in the same edit.
• Do not leave a giant body as technical debt.