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Bug 319719: JS scanner checks for keywords using pregenerated C source
avoiding the cost of atomizing keyword strings. This is an updated version of the previous rather bad commit to address Makefile issues. r=brendan
This commit is contained in:
igor%mir2.org
parent
7be74bd85e
commit
581ca02192
@ -104,6 +104,7 @@ CSRCS = \
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EXPORTS = \
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jsautocfg.h \
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jsautokw.h \
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js.msg \
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jsapi.h \
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jsarray.h \
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@ -193,6 +194,11 @@ JSJAVA_CFLAGS = \
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-I$(topsrcdir)/sun-java/include \
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$(JSJAVA_STUBHEADERS)
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# Define keyword generator before rules.mk, see bug 323979 comment 50
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HOST_SIMPLE_PROGRAMS += host_jskwgen$(HOST_BIN_SUFFIX)
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GARBAGE += jsautokw.h host_jskwgen$(HOST_BIN_SUFFIX)
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include $(topsrcdir)/config/rules.mk
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DEFINES += -DEXPORT_JS_API
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@ -392,3 +398,8 @@ jscpucfg$(HOST_BIN_SUFFIX): jscpucfg.c Makefile.in
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endif
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endif
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# Extra dependancies and rules for keyword switch code
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jsscan.$(OBJ_SUFFIX): jsautokw.h jskeyword.tbl
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jsautokw.h: host_jskwgen$(HOST_BIN_SUFFIX) jskeyword.tbl
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$< $@
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@ -64,6 +64,9 @@ else
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OTHER_LIBS += -Lfdlibm/$(OBJDIR) -lfdm
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endif
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# Look in OBJDIR to find jsautocfg.h and jsautokw.h
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INCLUDES += -I$(OBJDIR)
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ifdef JS_THREADSAFE
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DEFINES += -DJS_THREADSAFE
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INCLUDES += -I../../dist/$(OBJDIR)/include
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@ -120,9 +123,9 @@ endif
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#
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# Server-related changes :
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#
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ifdef NES40
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DEFINES += -DNES40
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endif
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ifdef NES40
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DEFINES += -DNES40
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endif
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#
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# Line editing support.
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@ -203,11 +206,13 @@ OTHER_HFILES = \
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jsopcode.tbl \
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js.msg \
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jsshell.msg \
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jskeyword.tbl \
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$(NULL)
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ifndef PREBUILT_CPUCFG
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OTHER_HFILES += $(OBJDIR)/jsautocfg.h
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endif
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OTHER_HFILES += $(OBJDIR)/jsautokw.h
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HFILES = $(JS_HFILES) $(API_HFILES) $(OTHER_HFILES)
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@ -255,14 +260,14 @@ FDLIBM_LIBRARY = fdlibm/$(OBJDIR)/fdlibm.lib
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else
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FDLIBM_LIBRARY = fdlibm/$(OBJDIR)/libfdm.a
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endif
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JSMATH_PRELINK = $(OBJDIR)/jsmathtemp.o
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JSMATH_PRELINK = $(OBJDIR)/jsmathtemp.$(OBJ_SUFFIX)
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# Flag for incremental linking
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DASH_R = -r
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ifeq ($(OS_ARCH),QNX)
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ifneq ($(OS_TARGET),NTO)
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# Don't use wildcard here, because we only want this resolved at link time.
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OBJS += fdlibm/*.o
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OBJS += fdlibm/*.$(OBJ_SUFFIX)
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endif
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endif
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@ -303,6 +308,33 @@ include jsconfig.mk
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nsinstall-target:
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cd ../../config; $(MAKE) OBJDIR=$(OBJDIR) OBJDIR_NAME=$(OBJDIR)
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#
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# Rules for keyword switch generation
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#
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GARBAGE += $(OBJDIR)/jsautokw.h $(OBJDIR)/jskwgen$(HOST_BIN_SUFFIX)
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GARBAGE += $(OBJDIR)/jskwgen.$(OBJ_SUFFIX)
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$(OBJDIR)/jsscan.$(OBJ_SUFFIX): $(OBJDIR)/jsautokw.h jskeyword.tbl
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$(OBJDIR)/jskwgen.$(OBJ_SUFFIX): jskwgen.c jskeyword.tbl
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$(OBJDIR)/jsautokw.h: $(OBJDIR)/jskwgen$(HOST_BIN_SUFFIX) jskeyword.tbl
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$(OBJDIR)/jskwgen$(HOST_BIN_SUFFIX) $@
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ifdef USE_MSVC
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$(OBJDIR)/jskwgen$(HOST_BIN_SUFFIX): $(OBJDIR)/jskwgen.$(OBJ_SUFFIX)
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link.exe -out:"$@" $(EXE_LINK_FLAGS) $^
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else
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$(OBJDIR)/jskwgen$(HOST_BIN_SUFFIX): $(OBJDIR)/jskwgen.$(OBJ_SUFFIX)
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$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^
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endif
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#
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# JS shell executable
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#
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ifdef USE_MSVC
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$(PROGRAM): $(PROG_OBJS) $(LIBRARY) $(FDLIBM_LIBRARY)
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link.exe -out:"$@" $(EXE_LINK_FLAGS) $^
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@ -327,15 +359,11 @@ $(OBJDIR)/jsautocfg.h: $(OBJDIR)/jscpucfg
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$(OBJDIR)/jscpucfg: $(OBJDIR)/jscpucfg.o
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$(CC) -o $@ $(OBJDIR)/jscpucfg.o
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# Look in OBJDIR to find jsautocfg.h
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INCLUDES += -I$(OBJDIR)
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# Add to TARGETS for clobber rule
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TARGETS += $(OBJDIR)/jsautocfg.h $(OBJDIR)/jscpucfg \
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$(OBJDIR)/jscpucfg.o $(OBJDIR)/jsmathtemp.o
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endif
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# special rule for jsmath.o since we want to incrementally link
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# against fdlibm to pull in only what is needed
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$(OBJDIR)/jsmath.o: jsmath.c jsmath.h jslibmath.h $(FDLIBM_LIBRARY)
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@ -348,7 +376,7 @@ endif
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ifeq ($(OS_ARCH),QNX)
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ifneq ($(OS_TARGET),NTO)
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@cp $(JSMATH_PRELINK) $@
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else
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else
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$(LD) $(DASH_R) -o $@ $(JSMATH_PRELINK) $(FDLIBM_LIBRARY)
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endif
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else
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@ -149,6 +149,22 @@ CLASSPATH = $(JDK)/lib/classes.zip$(SEP)$(CLASSDIR)/$(OBJDIR)
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include $(DEPTH)/config/$(OS_CONFIG).mk
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ifndef OBJ_SUFFIX
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ifdef USE_MSVC
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OBJ_SUFFIX = obj
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else
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OBJ_SUFFIX = o
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endif
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endif
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ifndef HOST_BIN_SUFFIX
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ifeq ($(OS_ARCH),WINNT)
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HOST_BIN_SUFFIX = .exe
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else
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HOST_BIN_SUFFIX =
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endif
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endif
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# Name of the binary code directories
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ifdef BUILD_IDG
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OBJDIR = $(OS_CONFIG)$(OBJDIR_TAG).OBJD
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@ -637,7 +637,7 @@ JS_GetTypeName(JSContext *cx, JSType type)
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{
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if ((uintN)type >= (uintN)JSTYPE_LIMIT)
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return NULL;
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return js_type_str[type];
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return js_type_strs[type];
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}
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/************************************************************************/
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@ -71,7 +71,7 @@ extern const char js_Error_str[]; /* trivial, from jsexn.h */
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* Keep this in sync with jspubtd.h -- an assertion below will insist that
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* its length match the JSType enum's JSTYPE_LIMIT limit value.
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*/
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const char *js_type_str[] = {
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const char *js_type_strs[] = {
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"undefined",
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js_object_str,
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"function",
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@ -82,7 +82,7 @@ const char *js_type_str[] = {
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"xml",
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};
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const char *js_boolean_str[] = {
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const char *js_boolean_strs[] = {
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js_false_str,
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js_true_str
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};
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@ -122,7 +122,6 @@ const char js_name_str[] = "name";
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const char js_noSuchMethod_str[] = "__noSuchMethod__";
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const char js_object_str[] = "object";
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const char js_parent_str[] = "__parent__";
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const char js_private_str[] = "private";
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const char js_proto_str[] = "__proto__";
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const char js_setter_str[] = "setter";
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const char js_set_str[] = "set";
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@ -294,9 +293,9 @@ js_InitPinnedAtoms(JSContext *cx, JSAtomState *state)
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return JS_FALSE; \
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JS_END_MACRO
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JS_ASSERT(sizeof js_type_str / sizeof js_type_str[0] == JSTYPE_LIMIT);
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JS_ASSERT(sizeof js_type_strs / sizeof js_type_strs[0] == JSTYPE_LIMIT);
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for (i = 0; i < JSTYPE_LIMIT; i++)
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FROB(typeAtoms[i], js_type_str[i]);
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FROB(typeAtoms[i], js_type_strs[i]);
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FROB(booleanAtoms[0], js_false_str);
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FROB(booleanAtoms[1], js_true_str);
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@ -63,8 +63,8 @@ JS_BEGIN_EXTERN_C
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#define ATOM_TMPSTR 0x80 /* internal, to avoid extra string */
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struct JSAtom {
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JSHashEntry entry; /* key is jsval, value keyword info or
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unhidden atom if ATOM_HIDDEN */
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JSHashEntry entry; /* key is jsval or unhidden atom
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if ATOM_HIDDEN */
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uint32 flags; /* pinned, interned, and mark flags */
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jsatomid number; /* atom serial number and hash code */
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};
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@ -89,9 +89,6 @@ struct JSAtom {
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extern JS_FRIEND_API(const char *)
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js_AtomToPrintableString(JSContext *cx, JSAtom *atom);
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#define ATOM_KEYWORD(atom) ((struct keyword *)(atom)->entry.value)
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#define ATOM_SET_KEYWORD(atom,kw) ((atom)->entry.value = (kw))
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struct JSAtomListElement {
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JSHashEntry entry;
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};
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@ -269,8 +266,8 @@ struct JSAtomState {
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};
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/* Well-known predefined strings and their atoms. */
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extern const char *js_type_str[];
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extern const char *js_boolean_str[];
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extern const char *js_type_strs[];
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extern const char *js_boolean_strs[];
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extern const char js_Arguments_str[];
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extern const char js_Array_str[];
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@ -80,7 +80,7 @@ bool_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
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return js_obj_toSource(cx, obj, argc, argv, rval);
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JS_snprintf(buf, sizeof buf, "(new %s(%s))",
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js_BooleanClass.name,
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js_boolean_str[JSVAL_TO_BOOLEAN(v) ? 1 : 0]);
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js_boolean_strs[JSVAL_TO_BOOLEAN(v) ? 1 : 0]);
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str = JS_NewStringCopyZ(cx, buf);
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if (!str)
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return JS_FALSE;
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@ -163,8 +163,6 @@ js_NewContext(JSRuntime *rt, size_t stackChunkSize)
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ok = (rt->atomState.liveAtoms == 0)
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? js_InitAtomState(cx, &rt->atomState)
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: js_InitPinnedAtoms(cx, &rt->atomState);
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if (ok)
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ok = js_InitScanner(cx);
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if (ok && !rt->scriptFilenameTable)
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ok = js_InitRuntimeScriptState(rt);
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if (ok)
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@ -561,3 +561,8 @@
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#error "unknown JS_VERSION"
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#endif
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/* Features that are present in all versions. */
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#define JS_HAS_RESERVED_JAVA_KEYWORDS 1
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#define JS_HAS_RESERVED_ECMA_KEYWORDS 1
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@ -1670,22 +1670,23 @@ static JSFunctionSpec function_methods[] = {
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JSBool
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js_IsIdentifier(JSString *str)
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{
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size_t n;
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jschar *s, c;
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size_t length;
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jschar c, *chars, *end, *s;
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n = JSSTRING_LENGTH(str);
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if (n == 0)
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length = JSSTRING_LENGTH(str);
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if (length == 0)
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return JS_FALSE;
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s = JSSTRING_CHARS(str);
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c = *s;
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chars = JSSTRING_CHARS(str);
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c = *chars;
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if (!JS_ISIDSTART(c))
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return JS_FALSE;
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for (n--; n != 0; n--) {
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c = *++s;
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end = chars + length;
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for (s = chars + 1; s != end; ++s) {
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c = *s;
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if (!JS_ISIDENT(c))
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return JS_FALSE;
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}
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return JS_TRUE;
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return !js_IsKeyword(chars, length);
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}
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static JSBool
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127
js/src/jskeyword.tbl
Normal file
127
js/src/jskeyword.tbl
Normal file
@ -0,0 +1,127 @@
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set sw=4 ts=8 et tw=80:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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JS_KEYWORD(break, TOK_BREAK, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(case, TOK_CASE, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(continue, TOK_CONTINUE, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(default, TOK_DEFAULT, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(delete, TOK_DELETE, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(do, TOK_DO, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(else, TOK_ELSE, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(export, TOK_EXPORT, JSOP_NOP, JSVERSION_1_2)
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JS_KEYWORD(false, TOK_PRIMARY, JSOP_FALSE, JSVERSION_DEFAULT)
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JS_KEYWORD(for, TOK_FOR, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(function, TOK_FUNCTION, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(if, TOK_IF, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(in, TOK_IN, JSOP_IN, JSVERSION_DEFAULT)
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JS_KEYWORD(new, TOK_NEW, JSOP_NEW, JSVERSION_DEFAULT)
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JS_KEYWORD(null, TOK_PRIMARY, JSOP_NULL, JSVERSION_DEFAULT)
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JS_KEYWORD(return, TOK_RETURN, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(switch, TOK_SWITCH, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(this, TOK_PRIMARY, JSOP_THIS, JSVERSION_DEFAULT)
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JS_KEYWORD(true, TOK_PRIMARY, JSOP_TRUE, JSVERSION_DEFAULT)
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JS_KEYWORD(typeof, TOK_UNARYOP, JSOP_TYPEOF, JSVERSION_DEFAULT)
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JS_KEYWORD(var, TOK_VAR, JSOP_DEFVAR, JSVERSION_DEFAULT)
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JS_KEYWORD(void, TOK_UNARYOP, JSOP_VOID, JSVERSION_DEFAULT)
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JS_KEYWORD(while, TOK_WHILE, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(with, TOK_WITH, JSOP_NOP, JSVERSION_DEFAULT)
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#if JS_HAS_CONST
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JS_KEYWORD(const, TOK_VAR, JSOP_DEFCONST, JSVERSION_DEFAULT)
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#else
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JS_KEYWORD(const, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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#endif
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#if JS_HAS_EXCEPTIONS
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JS_KEYWORD(try, TOK_TRY, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(catch, TOK_CATCH, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(finally, TOK_FINALLY, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(throw, TOK_THROW, JSOP_NOP, JSVERSION_DEFAULT)
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#else
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JS_KEYWORD(try, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(catch, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(finally, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(throw, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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#endif
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#if JS_HAS_INSTANCEOF
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JS_KEYWORD(instanceof, TOK_INSTANCEOF, JSOP_INSTANCEOF,JSVERSION_1_4)
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#else
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JS_KEYWORD(instanceof, TOK_RESERVED, JSOP_NOP, JSVERSION_1_4)
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#endif
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#if JS_HAS_RESERVED_JAVA_KEYWORDS
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JS_KEYWORD(abstract, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(boolean, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(byte, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(char, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
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JS_KEYWORD(class, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(double, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(extends, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(final, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(float, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(goto, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(implements, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(import, TOK_IMPORT, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(int, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(interface, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(long, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(native, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(package, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(private, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(protected, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(public, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(short, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(static, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(super, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(synchronized,TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(throws, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(transient, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
JS_KEYWORD(volatile, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT)
|
||||
#endif
|
||||
|
||||
#if JS_HAS_RESERVED_ECMA_KEYWORDS
|
||||
JS_KEYWORD(enum, TOK_RESERVED, JSOP_NOP, JSVERSION_1_3)
|
||||
#endif
|
||||
|
||||
#if JS_HAS_DEBUGGER_KEYWORD
|
||||
JS_KEYWORD(debugger, TOK_DEBUGGER, JSOP_NOP, JSVERSION_1_3)
|
||||
#elif JS_HAS_RESERVED_ECMA_KEYWORDS
|
||||
JS_KEYWORD(debugger, TOK_RESERVED, JSOP_NOP, JSVERSION_1_3)
|
||||
#endif
|
||||
460
js/src/jskwgen.c
Normal file
460
js/src/jskwgen.c
Normal file
@ -0,0 +1,460 @@
|
||||
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||
* vim: set sw=4 ts=8 et tw=80:
|
||||
*
|
||||
* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version
|
||||
* 1.1 (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is String Switch Generator for JavaScript Keywords,
|
||||
* released 2005-12-09.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Igor Bukanov.
|
||||
* Portions created by the Initial Developer are Copyright (C) 2005-2006
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
||||
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the MPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#include "jsstddef.h"
|
||||
#include <assert.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdarg.h>
|
||||
#include <ctype.h>
|
||||
|
||||
#include "jsconfig.h"
|
||||
|
||||
const char * const keyword_list[] = {
|
||||
#define JS_KEYWORD(keyword, type, op, version) #keyword,
|
||||
#include "jskeyword.tbl"
|
||||
#undef JS_KEYWORD
|
||||
};
|
||||
|
||||
struct gen_opt {
|
||||
FILE *output; /* output file for generated source */
|
||||
unsigned use_if_threshold; /* max number of choices to generate
|
||||
"if" selector instead of "switch" */
|
||||
unsigned char_tail_test_threshold; /* max number of unprocessed columns
|
||||
to use inlined char compare
|
||||
for remaining chars and not generic
|
||||
string compare code */
|
||||
unsigned indent_level; /* current source identation level */
|
||||
};
|
||||
|
||||
static unsigned column_to_compare;
|
||||
|
||||
static int
|
||||
length_comparator(const void *a, const void *b)
|
||||
{
|
||||
const char *str1 = keyword_list[*(unsigned *)a];
|
||||
const char *str2 = keyword_list[*(unsigned *)b];
|
||||
return (int)strlen(str1) - (int)strlen(str2);
|
||||
}
|
||||
|
||||
static int
|
||||
column_comparator(const void *a, const void *b)
|
||||
{
|
||||
const char *str1 = keyword_list[*(unsigned *)a];
|
||||
const char *str2 = keyword_list[*(unsigned *)b];
|
||||
return (int)str1[column_to_compare] - (int)str2[column_to_compare];
|
||||
}
|
||||
|
||||
static unsigned
|
||||
count_different_lengths(unsigned indexes[], unsigned nelem)
|
||||
{
|
||||
unsigned nlength, current_length, i, l;
|
||||
|
||||
current_length = 0;
|
||||
nlength = 0;
|
||||
for (i = 0; i != nelem; ++i) {
|
||||
l = (unsigned)strlen(keyword_list[indexes[i]]);
|
||||
assert(l != 0);
|
||||
if (current_length != l) {
|
||||
++nlength;
|
||||
current_length = l;
|
||||
}
|
||||
}
|
||||
return nlength;
|
||||
}
|
||||
|
||||
static void
|
||||
find_char_span_and_count(unsigned indexes[], unsigned nelem, unsigned column,
|
||||
unsigned *span_result, unsigned *count_result)
|
||||
{
|
||||
unsigned i, count;
|
||||
unsigned char c, prev, minc, maxc;
|
||||
|
||||
assert(nelem != 0);
|
||||
minc = maxc = prev = (unsigned char)keyword_list[indexes[0]][column];
|
||||
count = 1;
|
||||
for (i = 1; i != nelem; ++i) {
|
||||
c = (unsigned char)keyword_list[indexes[i]][column];
|
||||
if (prev != c) {
|
||||
prev = c;
|
||||
++count;
|
||||
if (minc > c) {
|
||||
minc = c;
|
||||
} else if (maxc < c) {
|
||||
maxc = c;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
*span_result = maxc - minc + 1;
|
||||
*count_result = count;
|
||||
}
|
||||
|
||||
static unsigned
|
||||
find_optimal_switch_column(struct gen_opt *opt,
|
||||
unsigned indexes[], unsigned nelem,
|
||||
unsigned columns[], unsigned unprocessed_columns,
|
||||
int *use_if_result)
|
||||
{
|
||||
unsigned i;
|
||||
unsigned span, min_span, min_span_index;
|
||||
unsigned nchar, min_nchar, min_nchar_index;
|
||||
|
||||
assert(unprocessed_columns != 0);
|
||||
i = 0;
|
||||
min_nchar = min_span = (unsigned)-1;
|
||||
min_nchar_index = min_span_index = 0;
|
||||
do {
|
||||
column_to_compare = columns[i];
|
||||
qsort(indexes, nelem, sizeof(indexes[0]), column_comparator);
|
||||
find_char_span_and_count(indexes, nelem, column_to_compare,
|
||||
&span, &nchar);
|
||||
assert(span != 0);
|
||||
if (span == 1) {
|
||||
assert(nchar == 1);
|
||||
*use_if_result = 1;
|
||||
return 1;
|
||||
}
|
||||
assert(nchar != 1);
|
||||
if (min_span > span) {
|
||||
min_span = span;
|
||||
min_span_index = i;
|
||||
}
|
||||
if (min_nchar > nchar) {
|
||||
min_nchar = nchar;
|
||||
min_nchar_index = i;
|
||||
}
|
||||
} while (++i != unprocessed_columns);
|
||||
|
||||
if (min_nchar <= opt->use_if_threshold) {
|
||||
*use_if_result = 1;
|
||||
i = min_nchar_index;
|
||||
} else {
|
||||
*use_if_result = 0;
|
||||
i = min_span_index;
|
||||
}
|
||||
|
||||
/*
|
||||
* Restore order corresponding to i if it was destroyed by
|
||||
* subsequent sort.
|
||||
*/
|
||||
if (i != unprocessed_columns - 1) {
|
||||
column_to_compare = columns[i];
|
||||
qsort(indexes, nelem, sizeof(indexes[0]), column_comparator);
|
||||
}
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
p(struct gen_opt *opt, const char *format, ...)
|
||||
{
|
||||
va_list ap;
|
||||
|
||||
va_start(ap, format);
|
||||
vfprintf(opt->output, format, ap);
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
/* Size for '\xxx' where xxx is octal escape */
|
||||
#define MIN_QUOTED_CHAR_BUFFER 7
|
||||
|
||||
static char *
|
||||
qchar(char c, char *quoted_buffer)
|
||||
{
|
||||
char *s;
|
||||
|
||||
s = quoted_buffer;
|
||||
*s++ = '\'';
|
||||
switch (c) {
|
||||
case '\n': c = 'n'; goto one_char_escape;
|
||||
case '\r': c = 'r'; goto one_char_escape;
|
||||
case '\t': c = 't'; goto one_char_escape;
|
||||
case '\f': c = 't'; goto one_char_escape;
|
||||
case '\0': c = '0'; goto one_char_escape;
|
||||
case '\'': goto one_char_escape;
|
||||
one_char_escape:
|
||||
*s++ = '\\';
|
||||
break;
|
||||
default:
|
||||
if (!isprint(c)) {
|
||||
*s++ = '\\';
|
||||
*s++ = (char)('0' + (0x3 & (((unsigned char)c) >> 6)));
|
||||
*s++ = (char)('0' + (0x7 & (((unsigned char)c) >> 3)));
|
||||
c = (char)('0' + (0x7 & ((unsigned char)c)));
|
||||
}
|
||||
}
|
||||
*s++ = c;
|
||||
*s++ = '\'';
|
||||
*s = '\0';
|
||||
assert(s + 1 <= quoted_buffer + MIN_QUOTED_CHAR_BUFFER);
|
||||
return quoted_buffer;
|
||||
}
|
||||
|
||||
static void
|
||||
nl(struct gen_opt *opt)
|
||||
{
|
||||
putc('\n', opt->output);
|
||||
}
|
||||
|
||||
static void
|
||||
indent(struct gen_opt *opt)
|
||||
{
|
||||
unsigned n = opt->indent_level;
|
||||
while (n != 0) {
|
||||
--n;
|
||||
fputs(" ", opt->output);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
line(struct gen_opt *opt, const char *format, ...)
|
||||
{
|
||||
va_list ap;
|
||||
|
||||
indent(opt);
|
||||
va_start(ap, format);
|
||||
vfprintf(opt->output, format, ap);
|
||||
va_end(ap);
|
||||
nl(opt);
|
||||
}
|
||||
|
||||
static void
|
||||
generate_letter_switch_r(struct gen_opt *opt,
|
||||
unsigned indexes[], unsigned nelem,
|
||||
unsigned columns[], unsigned unprocessed_columns)
|
||||
{
|
||||
char qbuf[MIN_QUOTED_CHAR_BUFFER];
|
||||
|
||||
assert(nelem != 0);
|
||||
if (nelem == 1) {
|
||||
unsigned kw_index = indexes[0];
|
||||
const char *keyword = keyword_list[kw_index];
|
||||
|
||||
if (unprocessed_columns == 0) {
|
||||
line(opt, "JSKW_GOT_MATCH(%u) /* %s */", kw_index, keyword);
|
||||
} else if (unprocessed_columns > opt->char_tail_test_threshold) {
|
||||
line(opt, "JSKW_TEST_GUESS(%u) /* %s */", kw_index, keyword);
|
||||
} else {
|
||||
unsigned i, column;
|
||||
|
||||
indent(opt); p(opt, "if (");
|
||||
for (i = 0; i != unprocessed_columns; ++i) {
|
||||
column = columns[i];
|
||||
qchar(keyword[column], qbuf);
|
||||
p(opt, "%sJSKW_AT(%u)==%s", (i == 0) ? "" : " && ",
|
||||
column, qbuf);
|
||||
}
|
||||
p(opt, ") {"); nl(opt);
|
||||
++opt->indent_level;
|
||||
line(opt, "JSKW_GOT_MATCH(%u) /* %s */", kw_index, keyword);
|
||||
--opt->indent_level;
|
||||
line(opt, "}");
|
||||
line(opt, "JSKW_NO_MATCH()");
|
||||
}
|
||||
} else {
|
||||
unsigned optimal_column_index, optimal_column;
|
||||
unsigned i;
|
||||
int use_if;
|
||||
char current;
|
||||
|
||||
assert(unprocessed_columns != 0);
|
||||
optimal_column_index = find_optimal_switch_column(opt, indexes, nelem,
|
||||
columns,
|
||||
unprocessed_columns,
|
||||
&use_if);
|
||||
optimal_column = columns[optimal_column_index];
|
||||
columns[optimal_column_index] = columns[unprocessed_columns - 1];
|
||||
|
||||
if (!use_if)
|
||||
line(opt, "switch (JSKW_AT(%u)) {", optimal_column);
|
||||
|
||||
current = keyword_list[indexes[0]][optimal_column];
|
||||
for (i = 0; i != nelem;) {
|
||||
unsigned same_char_begin = i;
|
||||
char next = current;
|
||||
|
||||
for (++i; i != nelem; ++i) {
|
||||
next = keyword_list[indexes[i]][optimal_column];
|
||||
if (next != current)
|
||||
break;
|
||||
}
|
||||
qchar(current, qbuf);
|
||||
if (use_if) {
|
||||
line(opt, "if (JSKW_AT(%u) == %s) {", optimal_column, qbuf);
|
||||
} else {
|
||||
line(opt, " case %s:", qbuf);
|
||||
}
|
||||
++opt->indent_level;
|
||||
generate_letter_switch_r(opt, indexes + same_char_begin,
|
||||
i - same_char_begin,
|
||||
columns, unprocessed_columns - 1);
|
||||
--opt->indent_level;
|
||||
if (use_if) {
|
||||
line(opt, "}");
|
||||
}
|
||||
current = next;
|
||||
}
|
||||
|
||||
if (!use_if) {
|
||||
line(opt, "}");
|
||||
}
|
||||
|
||||
columns[optimal_column_index] = optimal_column;
|
||||
|
||||
line(opt, "JSKW_NO_MATCH()");
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
generate_letter_switch(struct gen_opt *opt,
|
||||
unsigned indexes[], unsigned nelem,
|
||||
unsigned current_length)
|
||||
{
|
||||
unsigned *columns;
|
||||
unsigned i;
|
||||
|
||||
columns = malloc(sizeof(columns[0]) * current_length);
|
||||
if (!columns) {
|
||||
perror("malloc");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
for (i = 0; i != current_length; ++i) {
|
||||
columns[i] = i;
|
||||
}
|
||||
generate_letter_switch_r(opt, indexes, nelem, columns, current_length);
|
||||
free(columns);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
generate_switch(struct gen_opt *opt)
|
||||
{
|
||||
unsigned *indexes;
|
||||
unsigned nlength;
|
||||
unsigned i, current;
|
||||
int use_if;
|
||||
unsigned nelem;
|
||||
|
||||
nelem = sizeof(keyword_list)/sizeof(keyword_list[0]);
|
||||
|
||||
line(opt, "/*");
|
||||
line(opt, " * Generating switch for the list of %u entries:", nelem);
|
||||
for (i = 0; i != nelem; ++i) {
|
||||
line(opt, " * %s", keyword_list[i]);
|
||||
}
|
||||
line(opt, " */");
|
||||
|
||||
indexes = malloc(sizeof(indexes[0]) * nelem);
|
||||
if (!indexes) {
|
||||
perror("malloc");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
for (i = 0; i != nelem; ++i)
|
||||
indexes[i] = i;
|
||||
qsort(indexes, nelem, sizeof(indexes[i]), length_comparator);
|
||||
nlength = count_different_lengths(indexes, nelem);
|
||||
|
||||
use_if = (nlength <= opt->use_if_threshold);
|
||||
|
||||
if (!use_if)
|
||||
line(opt, "switch (JSKW_LENGTH()) {");
|
||||
|
||||
current = (unsigned)strlen(keyword_list[indexes[0]]);
|
||||
for (i = 0; i != nelem;) {
|
||||
unsigned same_length_begin = i;
|
||||
unsigned next = current;
|
||||
|
||||
for (++i; i != nelem; ++i) {
|
||||
next = (unsigned)strlen(keyword_list[indexes[i]]);
|
||||
if (next != current)
|
||||
break;
|
||||
}
|
||||
if (use_if) {
|
||||
line(opt, "if (JSKW_LENGTH() == %u) {", current);
|
||||
} else {
|
||||
line(opt, " case %u:", current);
|
||||
}
|
||||
++opt->indent_level;
|
||||
generate_letter_switch(opt, indexes + same_length_begin,
|
||||
i - same_length_begin,
|
||||
current);
|
||||
--opt->indent_level;
|
||||
if (use_if) {
|
||||
line(opt, "}");
|
||||
}
|
||||
current = next;
|
||||
}
|
||||
if (!use_if)
|
||||
line(opt, "}");
|
||||
line(opt, "JSKW_NO_MATCH()");
|
||||
free(indexes);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
struct gen_opt opt;
|
||||
|
||||
if (argc < 2) {
|
||||
opt.output = stdout;
|
||||
} else {
|
||||
opt.output = fopen(argv[1], "w");
|
||||
if (!opt.output) {
|
||||
perror("fopen");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
}
|
||||
opt.indent_level = 1;
|
||||
opt.use_if_threshold = 3;
|
||||
opt.char_tail_test_threshold = 4;
|
||||
|
||||
generate_switch(&opt);
|
||||
|
||||
if (opt.output != stdout) {
|
||||
if (fclose(opt.output)) {
|
||||
perror("fclose");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
}
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@ -836,12 +836,11 @@ js_obj_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
|
||||
*rval = STRING_TO_JSVAL(idstr); /* local root */
|
||||
|
||||
/*
|
||||
* If id is a string that's a reserved identifier, or else id is not
|
||||
* an identifier at all, then it needs to be quoted. Also, negative
|
||||
* integer ids must be quoted.
|
||||
* If id is a string that's not an identifier, then it needs to be
|
||||
* quoted. Also, negative integer ids must be quoted.
|
||||
*/
|
||||
if (atom
|
||||
? (ATOM_KEYWORD(atom) || !js_IsIdentifier(idstr))
|
||||
? !js_IsIdentifier(idstr)
|
||||
: (JSID_IS_OBJECT(id) || JSID_TO_INT(id) < 0)) {
|
||||
idstr = js_QuoteString(cx, idstr, (jschar)'\'');
|
||||
if (!idstr) {
|
||||
@ -3421,7 +3420,7 @@ js_DefaultValue(JSContext *cx, JSObject *obj, JSType hint, jsval *vp)
|
||||
JS_GetStringBytes(str),
|
||||
(hint == JSTYPE_VOID)
|
||||
? "primitive type"
|
||||
: js_type_str[hint]);
|
||||
: js_type_strs[hint]);
|
||||
}
|
||||
return JS_FALSE;
|
||||
}
|
||||
|
||||
@ -70,22 +70,7 @@
|
||||
#include "jsscript.h"
|
||||
#include "jsstr.h"
|
||||
|
||||
const char js_const_str[] = "const";
|
||||
const char js_var_str[] = "var";
|
||||
const char js_function_str[] = "function";
|
||||
const char js_in_str[] = "in";
|
||||
const char js_instanceof_str[] = "instanceof";
|
||||
const char js_new_str[] = "new";
|
||||
const char js_delete_str[] = "delete";
|
||||
const char js_typeof_str[] = "typeof";
|
||||
const char js_void_str[] = "void";
|
||||
const char js_null_str[] = "null";
|
||||
const char js_this_str[] = "this";
|
||||
const char js_false_str[] = "false";
|
||||
const char js_true_str[] = "true";
|
||||
const char js_default_str[] = "default";
|
||||
|
||||
const char *js_incop_str[] = {"++", "--"};
|
||||
static const char js_incop_strs[][3] = {"++", "--"};
|
||||
|
||||
/* Pollute the namespace locally for MSVC Win16, but not for WatCom. */
|
||||
#ifdef __WINDOWS_386__
|
||||
@ -914,8 +899,7 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
* Callers know that ATOM_IS_STRING(atom), and we leave it to the optimizer to
|
||||
* common ATOM_TO_STRING(atom) here and near the call sites.
|
||||
*/
|
||||
#define ATOM_IS_IDENTIFIER(atom) \
|
||||
(!ATOM_KEYWORD(atom) && js_IsIdentifier(ATOM_TO_STRING(atom)))
|
||||
#define ATOM_IS_IDENTIFIER(atom) js_IsIdentifier(ATOM_TO_STRING(atom))
|
||||
|
||||
/*
|
||||
* Given an atom already fetched from jp->script's atom map, quote/escape its
|
||||
@ -1846,7 +1830,7 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
return JS_FALSE;
|
||||
RETRACT(&ss->sprinter, lval);
|
||||
todo = Sprint(&ss->sprinter, "%s%s",
|
||||
js_incop_str[!(cs->format & JOF_INC)], lval);
|
||||
js_incop_strs[!(cs->format & JOF_INC)], lval);
|
||||
break;
|
||||
|
||||
case JSOP_INCPROP:
|
||||
@ -1854,7 +1838,7 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
GET_ATOM_QUOTE_AND_FMT("%s%s[%s]", "%s%s.%s", rval);
|
||||
lval = POP_STR();
|
||||
todo = Sprint(&ss->sprinter, fmt,
|
||||
js_incop_str[!(cs->format & JOF_INC)],
|
||||
js_incop_strs[!(cs->format & JOF_INC)],
|
||||
lval, rval);
|
||||
break;
|
||||
|
||||
@ -1867,11 +1851,11 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
(js_CodeSpec[lastop].format & JOF_XMLNAME)
|
||||
? "%s%s.%s"
|
||||
: "%s%s[%s]",
|
||||
js_incop_str[!(cs->format & JOF_INC)],
|
||||
js_incop_strs[!(cs->format & JOF_INC)],
|
||||
lval, xval);
|
||||
} else {
|
||||
todo = Sprint(&ss->sprinter, "%s%s",
|
||||
js_incop_str[!(cs->format & JOF_INC)], lval);
|
||||
js_incop_strs[!(cs->format & JOF_INC)], lval);
|
||||
}
|
||||
break;
|
||||
|
||||
@ -1898,7 +1882,7 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
return JS_FALSE;
|
||||
todo = STR2OFF(&ss->sprinter, lval);
|
||||
SprintPut(&ss->sprinter,
|
||||
js_incop_str[!(cs->format & JOF_INC)],
|
||||
js_incop_strs[!(cs->format & JOF_INC)],
|
||||
2);
|
||||
break;
|
||||
|
||||
@ -1907,7 +1891,7 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
GET_ATOM_QUOTE_AND_FMT("%s[%s]%s", "%s.%s%s", rval);
|
||||
lval = POP_STR();
|
||||
todo = Sprint(&ss->sprinter, fmt, lval, rval,
|
||||
js_incop_str[!(cs->format & JOF_INC)]);
|
||||
js_incop_strs[!(cs->format & JOF_INC)]);
|
||||
break;
|
||||
|
||||
case JSOP_ELEMINC:
|
||||
@ -1920,10 +1904,10 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
|
||||
? "%s.%s%s"
|
||||
: "%s[%s]%s",
|
||||
lval, xval,
|
||||
js_incop_str[!(cs->format & JOF_INC)]);
|
||||
js_incop_strs[!(cs->format & JOF_INC)]);
|
||||
} else {
|
||||
todo = Sprint(&ss->sprinter, "%s%s",
|
||||
lval, js_incop_str[!(cs->format & JOF_INC)]);
|
||||
lval, js_incop_strs[!(cs->format & JOF_INC)]);
|
||||
}
|
||||
break;
|
||||
|
||||
|
||||
192
js/src/jsscan.c
192
js/src/jsscan.c
@ -74,133 +74,80 @@
|
||||
#include "jsxml.h"
|
||||
#endif
|
||||
|
||||
#define RESERVE_JAVA_KEYWORDS
|
||||
#define RESERVE_ECMA_KEYWORDS
|
||||
|
||||
#define MAX_KEYWORD_LENGTH 12
|
||||
|
||||
static struct keyword {
|
||||
const char *name;
|
||||
#define JS_KEYWORD(keyword, type, op, version) \
|
||||
const char js_##keyword##_str[] = #keyword;
|
||||
#include "jskeyword.tbl"
|
||||
#undef JS_KEYWORD
|
||||
|
||||
struct keyword {
|
||||
const char *chars; /* C string with keyword text */
|
||||
JSTokenType tokentype; /* JSTokenType */
|
||||
JSOp op; /* JSOp */
|
||||
JSVersion version; /* JSVersion */
|
||||
} keywords[] = {
|
||||
{"break", TOK_BREAK, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"case", TOK_CASE, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"continue", TOK_CONTINUE, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{js_default_str, TOK_DEFAULT, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{js_delete_str, TOK_DELETE, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"do", TOK_DO, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"else", TOK_ELSE, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"export", TOK_EXPORT, JSOP_NOP, JSVERSION_1_2},
|
||||
{js_false_str, TOK_PRIMARY, JSOP_FALSE, JSVERSION_DEFAULT},
|
||||
{"for", TOK_FOR, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{js_function_str, TOK_FUNCTION, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"if", TOK_IF, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{js_in_str, TOK_IN, JSOP_IN, JSVERSION_DEFAULT},
|
||||
{js_new_str, TOK_NEW, JSOP_NEW, JSVERSION_DEFAULT},
|
||||
{js_null_str, TOK_PRIMARY, JSOP_NULL, JSVERSION_DEFAULT},
|
||||
{"return", TOK_RETURN, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"switch", TOK_SWITCH, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{js_this_str, TOK_PRIMARY, JSOP_THIS, JSVERSION_DEFAULT},
|
||||
{js_true_str, TOK_PRIMARY, JSOP_TRUE, JSVERSION_DEFAULT},
|
||||
{js_typeof_str, TOK_UNARYOP, JSOP_TYPEOF,JSVERSION_DEFAULT},
|
||||
{js_var_str, TOK_VAR, JSOP_DEFVAR,JSVERSION_DEFAULT},
|
||||
{js_void_str, TOK_UNARYOP, JSOP_VOID, JSVERSION_DEFAULT},
|
||||
{"while", TOK_WHILE, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"with", TOK_WITH, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
|
||||
#if JS_HAS_CONST
|
||||
{js_const_str, TOK_VAR, JSOP_DEFCONST,JSVERSION_DEFAULT},
|
||||
#else
|
||||
{js_const_str, TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
#endif
|
||||
|
||||
#if JS_HAS_EXCEPTIONS
|
||||
{"try", TOK_TRY, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"catch", TOK_CATCH, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"finally", TOK_FINALLY, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"throw", TOK_THROW, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
#else
|
||||
{"try", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"catch", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"finally", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"throw", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
#endif
|
||||
|
||||
#if JS_HAS_INSTANCEOF
|
||||
{js_instanceof_str, TOK_INSTANCEOF, JSOP_INSTANCEOF,JSVERSION_1_4},
|
||||
#else
|
||||
{js_instanceof_str, TOK_RESERVED, JSOP_NOP, JSVERSION_1_4},
|
||||
#endif
|
||||
|
||||
#ifdef RESERVE_JAVA_KEYWORDS
|
||||
{"abstract", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"boolean", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"byte", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"char", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"class", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"double", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"extends", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"final", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"float", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"goto", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"implements", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"import", TOK_IMPORT, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"int", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"interface", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"long", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"native", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"package", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"private", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"protected", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"public", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"short", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"static", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"super", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"synchronized", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"throws", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"transient", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
{"volatile", TOK_RESERVED, JSOP_NOP, JSVERSION_DEFAULT},
|
||||
#endif
|
||||
|
||||
#ifdef RESERVE_ECMA_KEYWORDS
|
||||
{"enum", TOK_RESERVED, JSOP_NOP, JSVERSION_1_3},
|
||||
#endif
|
||||
|
||||
#if JS_HAS_DEBUGGER_KEYWORD
|
||||
{"debugger", TOK_DEBUGGER, JSOP_NOP, JSVERSION_1_3},
|
||||
#elif defined(RESERVE_ECMA_KEYWORDS)
|
||||
{"debugger", TOK_RESERVED, JSOP_NOP, JSVERSION_1_3},
|
||||
#endif
|
||||
{0, TOK_EOF, JSOP_NOP, JSVERSION_DEFAULT}
|
||||
};
|
||||
|
||||
JSBool
|
||||
js_InitScanner(JSContext *cx)
|
||||
{
|
||||
struct keyword *kw;
|
||||
size_t length;
|
||||
JSAtom *atom;
|
||||
static const struct keyword keyword_defs[] = {
|
||||
#define JS_KEYWORD(keyword, type, op, version) \
|
||||
{js_##keyword##_str, type, op, version},
|
||||
#include "jskeyword.tbl"
|
||||
#undef JS_KEYWORD
|
||||
};
|
||||
|
||||
for (kw = keywords; kw->name; kw++) {
|
||||
length = strlen(kw->name);
|
||||
JS_ASSERT(length <= MAX_KEYWORD_LENGTH);
|
||||
atom = js_Atomize(cx, kw->name, length, ATOM_PINNED);
|
||||
if (!atom)
|
||||
return JS_FALSE;
|
||||
ATOM_SET_KEYWORD(atom, kw);
|
||||
}
|
||||
return JS_TRUE;
|
||||
#define KEYWORD_COUNT (sizeof keyword_defs / sizeof keyword_defs[0])
|
||||
|
||||
static const struct keyword *
|
||||
FindKeyword(const jschar *s, size_t length)
|
||||
{
|
||||
register size_t i;
|
||||
const struct keyword *kw;
|
||||
const char *chars;
|
||||
|
||||
JS_ASSERT(length != 0);
|
||||
|
||||
#define JSKW_LENGTH() length
|
||||
#define JSKW_AT(column) s[column]
|
||||
#define JSKW_GOT_MATCH(index) i = (index); goto got_match;
|
||||
#define JSKW_TEST_GUESS(index) i = (index); goto test_guess;
|
||||
#define JSKW_NO_MATCH() goto no_match;
|
||||
#include "jsautokw.h"
|
||||
#undef JSKW_NO_MATCH
|
||||
#undef JSKW_TEST_GUESS
|
||||
#undef JSKW_GOT_MATCH
|
||||
#undef JSKW_AT
|
||||
#undef JSKW_LENGTH
|
||||
|
||||
got_match:
|
||||
return &keyword_defs[i];
|
||||
|
||||
test_guess:
|
||||
kw = &keyword_defs[i];
|
||||
chars = kw->chars;
|
||||
do {
|
||||
if (*s++ != (unsigned char)(*chars++))
|
||||
goto no_match;
|
||||
} while (--length != 0);
|
||||
return kw;
|
||||
|
||||
no_match:
|
||||
return NULL;
|
||||
}
|
||||
|
||||
JSBool
|
||||
js_IsKeyword(const jschar *str, size_t length)
|
||||
{
|
||||
JS_ASSERT(length != 0);
|
||||
return FindKeyword(str, length) != NULL;
|
||||
}
|
||||
|
||||
JS_FRIEND_API(void)
|
||||
js_MapKeywords(void (*mapfun)(const char *))
|
||||
{
|
||||
struct keyword *kw;
|
||||
size_t i;
|
||||
|
||||
for (kw = keywords; kw->name; kw++)
|
||||
mapfun(kw->name);
|
||||
for (i = 0; i != KEYWORD_COUNT; ++i)
|
||||
mapfun(keyword_defs[i].chars);
|
||||
}
|
||||
|
||||
JSTokenStream *
|
||||
@ -755,7 +702,7 @@ js_ReportCompileErrorNumber(JSContext *cx, void *handle, uintN flags,
|
||||
&report, JS_TRUE, ap);
|
||||
va_end(ap);
|
||||
|
||||
/*
|
||||
/*
|
||||
* We have to do this here because js_ReportCompileErrorNumberUC doesn't
|
||||
* need to do this.
|
||||
*/
|
||||
@ -779,7 +726,7 @@ js_ReportCompileErrorNumberUC(JSContext *cx, void *handle, uintN flags,
|
||||
|
||||
if ((flags & JSREPORT_STRICT) && !JS_HAS_STRICT_OPTION(cx))
|
||||
return JS_TRUE;
|
||||
|
||||
|
||||
va_start(ap, errorNumber);
|
||||
warning = ReportCompileErrorNumber(cx, handle, flags, errorNumber,
|
||||
&report, JS_FALSE, ap);
|
||||
@ -1114,6 +1061,7 @@ js_GetToken(JSContext *cx, JSTokenStream *ts)
|
||||
JSToken *tp;
|
||||
JSAtom *atom;
|
||||
JSBool hadUnicodeEscape;
|
||||
const struct keyword *kw;
|
||||
|
||||
#define INIT_TOKENBUF() (ts->tokenbuf.ptr = ts->tokenbuf.base)
|
||||
#define NUL_TERM_TOKENBUF() (*ts->tokenbuf.ptr = 0)
|
||||
@ -1335,14 +1283,8 @@ retry:
|
||||
}
|
||||
UngetChar(ts, c);
|
||||
|
||||
atom = TOKENBUF_TO_ATOM();
|
||||
if (!atom)
|
||||
goto error;
|
||||
if (!hadUnicodeEscape && ATOM_KEYWORD(atom)) {
|
||||
struct keyword *kw;
|
||||
|
||||
JS_ASSERT(!(atom->flags & ATOM_HIDDEN));
|
||||
kw = ATOM_KEYWORD(atom);
|
||||
if (!hadUnicodeEscape &&
|
||||
(kw = FindKeyword(TOKENBUF_BASE(), TOKENBUF_LENGTH()))) {
|
||||
if (kw->tokentype == TOK_RESERVED) {
|
||||
char buf[MAX_KEYWORD_LENGTH + 1];
|
||||
size_t buflen = sizeof(buf) - 1;
|
||||
@ -1364,6 +1306,10 @@ retry:
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
atom = TOKENBUF_TO_ATOM();
|
||||
if (!atom)
|
||||
goto error;
|
||||
tp->t_op = JSOP_NAME;
|
||||
tp->t_atom = atom;
|
||||
tt = TOK_NAME;
|
||||
|
||||
@ -301,10 +301,10 @@ extern JS_FRIEND_API(int)
|
||||
js_fgets(char *buf, int size, FILE *file);
|
||||
|
||||
/*
|
||||
* Initialize the scanner, installing JS keywords into cx's global scope.
|
||||
* Return true if the given char array forms JavaScript keyword.
|
||||
*/
|
||||
extern JSBool
|
||||
js_InitScanner(JSContext *cx);
|
||||
js_IsKeyword(const jschar *str, size_t length);
|
||||
|
||||
/*
|
||||
* Friend-exported API entry point to call a mapping function on each reserved
|
||||
|
||||
@ -2402,7 +2402,7 @@ GetNamespace(JSContext *cx, JSXMLQName *qn, const JSXMLArray *inScopeNSes)
|
||||
qn->prefix
|
||||
? js_ValueToPrintableString(cx,
|
||||
STRING_TO_JSVAL(qn->prefix))
|
||||
: js_type_str[JSTYPE_VOID]);
|
||||
: js_type_strs[JSTYPE_VOID]);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -2906,9 +2906,9 @@ ToXMLString(JSContext *cx, jsval v)
|
||||
if (JSVAL_IS_NULL(v) || JSVAL_IS_VOID(v)) {
|
||||
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
|
||||
JSMSG_BAD_XML_CONVERSION,
|
||||
js_type_str[JSVAL_IS_NULL(v)
|
||||
? JSTYPE_NULL
|
||||
: JSTYPE_VOID]);
|
||||
js_type_strs[JSVAL_IS_NULL(v)
|
||||
? JSTYPE_NULL
|
||||
: JSTYPE_VOID]);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
@ -177,7 +177,7 @@ endif
|
||||
+$(LOOP_OVER_DIRS)
|
||||
|
||||
clean:
|
||||
rm -rf $(OBJS)
|
||||
rm -rf $(OBJS) $(GARBAGE)
|
||||
@cd fdlibm; $(MAKE) -f Makefile.ref clean
|
||||
|
||||
clobber:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user