更新到2019-12-21版本

Author: llgoer

Changelog

@@ -1,3 +1,15 @@
+2019-12-21:
+
+- added nullish coalescing operator (ES2020)
+- added optional chaining (ES2020)
+- removed recursions in garbage collector
+- test stack overflow in the parser
+- improved backtrace logic
+- added JS_SetHostPromiseRejectionTracker()
+- allow exotic constructors
+- improved c++ compatibility
+- misc bug fixes
+
 2019-10-27:
 
 - added example of C class in a module (examples/test_point.js)

Makefile

@@ -411,7 +411,7 @@ doc/%.html: doc/%.html.pre
 # tests
 
 ifndef CONFIG_DARWIN
-test: tests/bjson.so
+test: tests/bjson.so examples/point.so
 endif
 
 test: qjs qjsbn
@@ -481,12 +481,12 @@ test2-check: run-test262
 	time ./run-test262 -m -c test262.conf -E -a
 
 # Test262 + BigInt tests
-test2bn-default: run-test262-bn
-	time ./run-test262-bn -m -c test262bn.conf
-
 test2bn: run-test262-bn
 	time ./run-test262-bn -m -c test262bn.conf -a
 
+test2bn-update: run-test262-bn
+	time ./run-test262-bn -u -c test262bn.conf -a
+
 test2bn-32: run-test262-bn32
 	time ./run-test262-bn32 -m -c test262bn.conf -a
 
@@ -496,7 +496,7 @@ testall-32: all test-32 microbench-32 test2o-32 test2-32 test2bn-32
 
 testall-complete: testall testall-32
 
-bench-v8: qjs qjs32
+bench-v8: qjs
 	make -C tests/bench-v8
 	./qjs -d tests/bench-v8/combined.js
 

TODO

@@ -1,4 +1,6 @@
-- 64-bit atoms in 64-bit mode?
+Misc:
+- make BigInt available by default
+- use custom printf to avoid C library compatibility issues
 - rename CONFIG_ALL_UNICODE, CONFIG_BIGNUM, CONFIG_ATOMICS, CONFIG_CHECK_JSVALUE ?
 - unify coding style and naming conventions
 - use names from the ECMA spec in library implementation
@@ -10,6 +12,7 @@
 - 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:
 - test border cases for max number of atoms, object properties, string length
@@ -21,6 +24,7 @@ Memory:
 - improve JS_ComputeMemoryUsage() with more info
 
 Optimizations:
+- 64-bit atoms in 64-bit mode ?
 - use auto-init properties for more global objects
 - reuse stack slots for disjoint scopes, if strip
 - optimize `for of` iterator for built-in array objects
@@ -44,27 +48,22 @@ Optimizations:
 - 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
-- debugger keyword support
 - 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
-- limited support for web assembly 
 - get rid of __loadScript, use more common name
 - BSD sockets
 - Workers
-- use custom printf to avoid C library compatibility issues
-- use custom timezone support to avoid C library compatibility issues
 
 REPL:
-- strip internal functions from stack trace
+- debugger
 - readline: support MS Windows terminal
 - readline: handle dynamic terminal resizing
 - multiline editing
-- debugger
 - runtime object and function inspectors
 - interactive object browser
 - use more generic approach to display evaluation results
@@ -75,6 +74,6 @@ REPL:
 Test262o:   0/11262 errors, 463 excluded
 Test262o commit: 7da91bceb9ce7613f87db47ddd1292a2dda58b42 (es5-tests branch)
 
-Test262:   2/67433 errors, 901 excluded, 1658 skipped
-Test262bn: 2/69536 errors, 834 excluded, 670 skipped
-test262 commit: 21195de94cfc36eadbde00a825ca7efb3d9c3dde
+Test262:   4/67619 errors, 913 excluded, 1660 skipped
+Test262bn: 4/69722 errors, 846 excluded, 672 skipped
+test262 commit: 19fd4bea797646ae9bbfc9d325f14052ca370b54

VERSION

@@ -1 +1 @@
-2019-10-27
+2019-12-21

doc/jsbignum.html

@@ -28,7 +28,7 @@ language while being 100% backward compatible:
 @itemize
 
 @item Overloading of the standard operators
-to support new types such as complex numbers, fractions or matrixes.
+to support new types such as complex numbers, fractions or matrices.
 
 @item Bigint mode where arbitrarily large integers are available by default (no @code{n} suffix is necessary as in the TC39 BigInt proposal@footnote{@url{https://tc39.github.io/proposal-bigint/}}).
 
@@ -417,7 +417,7 @@ It is a normal object.
 @subsection @code{Number} constructor
 
 The number constructor returns its argument rounded to a Float using
-the global floating point environement. In bigint mode, the Number
+the global floating point environment. In bigint mode, the Number
 constructor returns a Float. In standard mode, it returns a SmallInt
 if the value fits it, otherwise a Float.
 
@@ -723,9 +723,9 @@ Read-only integer. Round to nearest, with ties away from zero rounding mode.
 @item RNDNU
 Read-only integer. Round to nearest, with ties to +Infinity rounding mode.
 
-@item RNDF@footnote{Could be removed in case a deterministic behvior for floating point operations is required.}
+@item RNDF@footnote{Could be removed in case a deterministic behavior for floating point operations is required.}
 Read-only integer. Faithful rounding mode. The result is
-non-deterministicly rounded to -Infinity or +Infinity. This rounding
+non-deterministically rounded to -Infinity or +Infinity. This rounding
 mode usually gives a faster and deterministic running time for the
 floating point operations.