diff options
Diffstat (limited to 'src/com/craftinginterpreters/lox/Parser.java')
-rw-r--r-- | src/com/craftinginterpreters/lox/Parser.java | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/com/craftinginterpreters/lox/Parser.java b/src/com/craftinginterpreters/lox/Parser.java index c427bc4..528326c 100644 --- a/src/com/craftinginterpreters/lox/Parser.java +++ b/src/com/craftinginterpreters/lox/Parser.java @@ -52,6 +52,8 @@ class Parser { return ifStatement(); if (match(PRINT)) return printStatement(); + if (match(RETURN)) + return returnStatement(); if (match(WHILE)) return whileStatement(); if (match(LEFT_BRACE)) @@ -120,6 +122,17 @@ class Parser { return new Stmt.Print(value); } + private Stmt returnStatement() { + Token keyword = previous(); + Expr value = null; + if (!check(SEMICOLON)) { + value = expression(); + } + + consume(SEMICOLON, "Expect ';' after return value."); + return new Stmt.Return(keyword, value); + } + private Stmt varDeclaration() { Token name = consume(IDENTIFIER, "Expect variable name."); |