Lexer support for the "free" statement

Author: BenediktMagnus

src/lexer/lexer.ts

@@ -411,6 +411,9 @@ export class Lexer
             case 'new':
                 kind = TokenKind.NewKeyword;
                 break;
+            case 'free':
+                kind = TokenKind.FreeKeyword;
+                break;
             case 'variable':
                 kind = TokenKind.VariableKeyword;
                 break;

src/lexer/tokenKind.ts

@@ -46,6 +46,7 @@ export enum TokenKind
     FalseKeyword,
     ImportKeyword,
     NewKeyword,
+    FreeKeyword,
     VariableKeyword,
     ConstantKeyword,
     FieldKeyword,

tests/compiler/lexer.ts

@@ -107,6 +107,7 @@ describe('Lexer',
             new InputToTokenKind('true', TokenKind.TrueKeyword, 'the true keyword'),
             new InputToTokenKind('false', TokenKind.FalseKeyword, 'the false keyword'),
             new InputToTokenKind('new', TokenKind.NewKeyword, 'the new keyword'),
+            new InputToTokenKind('free', TokenKind.FreeKeyword, 'the free keyword'),
             new InputToTokenKind('module', TokenKind.ModuleKeyword, 'the module keyword'),
             new InputToTokenKind('class', TokenKind.ClassKeyword, 'the class keyword'),
             new InputToTokenKind('import', TokenKind.ImportKeyword, 'the import keyword'),