2020-11-08 release

Author: bellard

Changelog

@@ -1,3 +1,10 @@
+2020-11-08:
+
+- improved function parameter initializers
+- added std.setenv(), std.unsetenv() and std.getenviron()
+- added JS_EvalThis()
+- misc bug fixes
+
 2020-09-06:
 
 - added logical assignment operators

Makefile

@@ -28,9 +28,9 @@ endif
 # Windows cross compilation from Linux
 #CONFIG_WIN32=y
 # use link time optimization (smaller and faster executables but slower build)
-CONFIG_LTO=y
+#CONFIG_LTO=y
 # consider warnings as errors (for development)
-#CONFIG_WERROR=y
+CONFIG_WERROR=y
 # force 32 bit build for some utilities
 #CONFIG_M32=y
 
@@ -53,7 +53,11 @@ CONFIG_BIGNUM=y
 OBJDIR=.obj
 
 ifdef CONFIG_WIN32
-  CROSS_PREFIX=i686-w64-mingw32-
+  ifdef CONFIG_M32
+    CROSS_PREFIX=i686-w64-mingw32-
+  else
+    CROSS_PREFIX=x86_64-w64-mingw32-
+  endif
   EXE=.exe
 else
   CROSS_PREFIX=
@@ -281,15 +285,12 @@ $(OBJDIR)/%.check.o: %.c | $(OBJDIR)
 regexp_test: libregexp.c libunicode.c cutils.c
 	$(CC) $(LDFLAGS) $(CFLAGS) -DTEST -o $@ libregexp.c libunicode.c cutils.c $(LIBS)
 
-jscompress: jscompress.c
-	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ jscompress.c
-
 unicode_gen: $(OBJDIR)/unicode_gen.host.o $(OBJDIR)/cutils.host.o libunicode.c unicode_gen_def.h
 	$(HOST_CC) $(LDFLAGS) $(CFLAGS) -o $@ $(OBJDIR)/unicode_gen.host.o $(OBJDIR)/cutils.host.o
 
 clean:
 	rm -f repl.c qjscalc.c out.c
-	rm -f *.a *.o *.d *~ jscompress unicode_gen regexp_test $(PROGS)
+	rm -f *.a *.o *.d *~ unicode_gen regexp_test $(PROGS)
 	rm -f hello.c test_fib.c
 	rm -f examples/*.so tests/*.so
 	rm -rf $(OBJDIR)/ *.dSYM/ qjs-debug

TODO

@@ -1,33 +1,48 @@
-Misc:
-- use realpath in module name normalizer and put it in quickjs-libc
-- use custom printf to avoid C library compatibility issues
-- rename CONFIG_ALL_UNICODE, CONFIG_BIGNUM, CONFIG_ATOMICS, CONFIG_CHECK_JSVALUE ?
+Bugs:
+- modules: better error handling with cyclic module references
+
+Misc ideas:
+- use custom printf to avoid compatibility issues with floating point numbers
+- consistent naming for preprocessor defines
 - unify coding style and naming conventions
 - use names from the ECMA spec in library implementation
-- modules: if no ".", use a well known module loading path ?
-- use JSHoistedDef only for global variables (JSHoistedDef.var_name != JS_ATOM_NULL)
-- add index in JSVarDef and is_arg flag to merge args and vars in JSFunctionDef
-- replace most JSVarDef flags with var_type enumeration
 - use byte code emitters with typed arguments (for clarity)
 - use 2 bytecode DynBufs in JSFunctionDef, one for reading, one for writing
   and use the same wrappers in all phases
 - use more generic method for line numbers in resolve_variables and resolve_labels
 - use custom timezone support to avoid C library compatibility issues
 
 Memory:
+- use memory pools for objects, etc?
 - test border cases for max number of atoms, object properties, string length
 - add emergency malloc mode for out of memory exceptions.
 - test all DynBuf memory errors
 - test all js_realloc memory errors
-- bignum: handle memory errors
-- use memory pools for objects, etc?
 - improve JS_ComputeMemoryUsage() with more info
 
-Optimizations:
+Built-in standard library:
+- BSD sockets
+- modules: use realpath in module name normalizer and put it in quickjs-libc
+- modules: if no ".", use a well known module loading path ?
+- get rid of __loadScript, use more common name
+
+REPL:
+- debugger
+- readline: support MS Windows terminal
+- readline: handle dynamic terminal resizing
+- readline: handle double width unicode characters
+- multiline editing
+- runtime object and function inspectors
+- interactive object browser
+- use more generic approach to display evaluation results
+- improve directive handling: dispatch, colorize, completion...
+- save history
+- close all predefined methods in repl.js and jscalc.js
+
+Optimization ideas:
 - 64-bit atoms in 64-bit mode ?
-- use auto-init properties for more global objects
+- 64-bit small bigint in 64-bit mode ?
 - reuse stack slots for disjoint scopes, if strip
-- optimize `for of` iterator for built-in array objects
 - add heuristic to avoid some cycles in closures
 - small String (0-2 charcodes) with immediate storage
 - perform static string concatenation at compile time
@@ -36,43 +51,20 @@ Optimizations:
 - optimize `s += a + b`, `s += a.b` and similar simple expressions
 - ensure string canonical representation and optimise comparisons and hashes?
 - remove JSObject.first_weak_ref, use bit+context based hashed array for weak references
-- optimize function storage with length and name accessors?
 - property access optimization on the global object, functions,
   prototypes and special non extensible objects.
 - create object literals with the correct length by backpatching length argument
 - remove redundant set_loc_uninitialized/check_uninitialized opcodes
 - peephole optim: push_atom_value, to_propkey -> push_atom_value
 - peephole optim: put_loc x, get_loc_check x -> set_loc x
-- comparative performance benchmark
-- use variable name when throwing uninitialized exception if available
 - convert slow array to fast array when all properties != length are numeric
 - optimize destructuring assignments for global and local variables
 - implement some form of tail-call-optimization
 - optimize OP_apply
 - optimize f(...b)
 
-Extensions:
-- support more features in [features] section
-- add built-in preprocessor in compiler, get rid of jscompress
-  handle #if, #ifdef, #line, limited support for #define
-- get rid of __loadScript, use more common name
-- BSD sockets
-
-REPL:
-- debugger
-- readline: support MS Windows terminal
-- readline: handle dynamic terminal resizing
-- readline: handle double width unicode characters
-- multiline editing
-- runtime object and function inspectors
-- interactive object browser
-- use more generic approach to display evaluation results
-- improve directive handling: dispatch, colorize, completion...
-- save history
-- close all predefined methods in repl.js and jscalc.js
-
 Test262o:   0/11262 errors, 463 excluded
 Test262o commit: 7da91bceb9ce7613f87db47ddd1292a2dda58b42 (es5-tests branch)
 
-Test262: 30/71748 errors, 868 excluded, 474 skipped
-Test262 commit: 24c67328062383079ada85f4d253eb0526fd209b
+Result: 51/75119 errors, 899 excluded, 570 skipped
+Test262 commit: 1c33fdb0ca60fb9d7392403be769ed0d26209132

VERSION

@@ -1 +1 @@
-2020-09-06
+2020-11-08