feat: add logical OR operator with short-circuit evaluation and token support

Add TOKEN_PIPEPIPE token for '||' syntax, implement or() parsing function with CODE_OR bytecode, and add VM interpreter logic that short-circuits on truthy left operand. Update .gitignore to exclude *.xccheckout files, extend test coverage for falsy behavior in and.wren and if.wren, and add comprehensive or.wren test suite verifying short-circuit semantics and truthiness rules.
2013-11-20 02:24:58 +00:00
parent 06be5808da
commit 643a7c4f97
7 changed files with 96 additions and 2 deletions
@@ -44,3 +44,8 @@ if (true) class Foo {} // no error
 // Definition in else arm.
 if (false) null else var a = io.write("ok") // expect: ok
 if (true) null else class Foo {} // no error
+
+// Only false is falsy.
+if (0) io.write(0) // expect: 0
+if (null) io.write(null) // expect: null
+if ("") io.write("empty") // expect: empty