Switch statements

[lucaswerkmeister]

Current plan for ‘switch’ statements:

• [x] SwitchCaseElse(SwitchClause, SwitchCases)
• [x] SwitchClause(Expression)
• [x] SwitchCases([CaseClause+], ElseCaseClause?)
• [x] CaseClause(CaseItem, Block)
• [x] ElseCaseClause(Block)
• [x] CaseItem
  • [x] MatchCase([<IntegerLiteral|CharacterLiteral|StringLiteral|NegationOperation|BaseExpression>+]) (with an assertion that the operand of the NegationOperation is an IntegerLiteral)
  • [x] IsCase(Type)