Implement the initial infrastructure for foreign classes in the Wren VM, including new opcodes (FOREIGN_CONSTRUCT, FOREIGN_CLASS), a WrenBindForeignClassFn callback type in the public API, and updated CLI vm.c to store and forward foreign binding callbacks via setForeignCallbacks(). The compiler now tracks whether a class is foreign via a new isForeign flag in ClassCompiler, emits CODE_FOREIGN_CONSTRUCT instead of CODE_CONSTRUCT for foreign class constructors, and errors on field definitions inside foreign classes. The debug dump and opcode header gain entries for the new opcodes, and wrenBindSuperclass handles the -1 numFields sentinel for foreign classes to prevent field inheritance from superclasses.
- Switch Travis CI from sudo-based apt-get to addons.apt.packages for gcc-multilib
- Enable container-based builds with `sudo: false`
- Update README.md call-to-action links to point to getting-started and browser playground
- Replace `printList_` with `printAll` in IO class and remove redundant `IO.` prefixes
- Add IO.read() method documentation and update IO.print docs for up to 16 arguments
- Reorganize community page with Libraries, Language bindings, and Tools sections
- Add wrenjs JavaScript binding and Sublime Text syntax highlighting
- Fix typo "no where" to "nowhere" in fibers documentation
- Add indentation to preprocessor defines in wren_common.h for consistency
- Remove unreachable `return 0` after UNREACHABLE() in wren_compiler.c
- Fix Windows color output by wrapping text in str() in test script
Replace three duplicated switch-on-type patterns (in wrenDebugPrintStackTrace, wrenAppendCallFrame, and runInterpreter) with a single static inline wrenGetFrameFunction that handles OBJ_FN and OBJ_CLOSURE cases with an UNREACHABLE default.
Replace all uses of the `new` reserved word with explicit `this new()` constructor definitions and `ClassName.new()` instantiation calls in builtin/core.wren. Update all documentation files (classes.markdown, fiber.markdown, fn.markdown, sequence.markdown, error-handling.markdown, expressions.markdown, fibers.markdown, functions.markdown) to reflect the new constructor syntax, removing `new` keyword examples and replacing them with `ClassName.new()` patterns and `this new()` definitions.
The super() call resolution is changed from dynamic runtime lookup (walking the receiver's class hierarchy) to static binding at class definition time. This ensures correct method dispatch when a method containing a super call is inherited by another subclass.
Key changes:
- In `callSignature()`, when compiling a `CODE_SUPER_0` instruction, a constant slot is created and filled with NULL, to be populated with the superclass reference when the method is bound.
- In `getNumArguments()`, the `CODE_SUPER_0` through `CODE_SUPER_16` cases are moved after the newly added 2-argument opcodes (`CODE_JUMP`, `CODE_LOOP`, etc.) to maintain correct ordering.
- In `dumpInstruction()`, the debug output now prints the superclass constant index alongside the method symbol.
- In `runInterpreter()`, the super call execution reads the superclass directly from the function's constant table instead of deriving it from the receiver's class at runtime.
The READ_BYTE and READ_SHORT macros are defined locally within functions
in wren_debug.c and wren_vm.c but were not being undefined after use,
causing potential redefinition warnings or errors when these macros
conflict with other definitions in the same translation unit. This
change adds #undef directives at the end of dumpInstruction in
wren_debug.c and runInterpreter in wren_vm.c to properly clean up
the macro definitions.
Remove the `WrenVM* vm` parameter from `wrenValueBufferInit`, `wrenByteBufferInit`,
`wrenIntBufferInit`, `wrenStringBufferInit`, `wrenSymbolTableInit`,
`wrenMethodBufferInit`, `wrenStringFind`, and `wrenDebugPrintStackTrace`
functions across the compiler, core, debug, utils, value, and VM modules.
Update all call sites and macro definitions to match the simplified signatures,
eliminating dead parameters that were never used within the function bodies.
The dumpObject function in wren_debug.c was incorrectly printing "[fn %p]" for
OBJ_RANGE objects instead of the correct "[range %p]" label. This fix ensures
that range objects are properly identified during debug output.
Separate Wren VM library sources from CLI tool sources by moving them into
src/vm/ and src/cli/ subdirectories respectively. Update the Makefile to use
separate wildcard patterns for each directory, generate distinct object file
paths under build/vm/ and build/cli/, and adjust include paths to src/include.
Also update the Xcode project file to reference the new file locations.
