Dmitry Volyntsev
January 22, 2020 08:00AM
details: https://hg.nginx.org/njs/rev/b247b1c5531f
branches:
changeset: 1313:b247b1c5531f
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Wed Jan 22 15:29:47 2020 +0300
description:
Fixed match of native function is backtraces.

Since 6df48738a043 native methods are not uniquely identifiable
by a function pointer as several method may share common
C function and differ only in magic argument.

diffstat:

src/njs_builtin.c | 10 ++++++----
src/njs_function.h | 7 +++++++
src/njs_vm.c | 3 +--
src/njs_vm.h | 2 +-
src/test/njs_interactive_test.c | 13 +++++++++----
5 files changed, 24 insertions(+), 11 deletions(-)

diffs (116 lines):

diff -r 74c2de51636c -r b247b1c5531f src/njs_builtin.c
--- a/src/njs_builtin.c Wed Jan 22 15:29:44 2020 +0300
+++ b/src/njs_builtin.c Wed Jan 22 15:29:47 2020 +0300
@@ -15,7 +15,7 @@ typedef struct {
NJS_BUILTIN_TRAVERSE_MATCH,
} type;

- njs_function_native_t native;
+ njs_function_t *func;

njs_lvlhsh_t keys;
njs_str_t match;
@@ -391,6 +391,7 @@ njs_builtin_traverse(njs_vm_t *vm, njs_t
u_char *p, *start, *end;
njs_int_t ret, n;
njs_str_t name;
+ njs_function_t *func;
njs_object_prop_t *prop;
njs_lvlhsh_query_t lhq;
njs_builtin_traverse_t *ctx;
@@ -401,10 +402,11 @@ njs_builtin_traverse(njs_vm_t *vm, njs_t

if (ctx->type == NJS_BUILTIN_TRAVERSE_MATCH) {
prop = traverse->prop;
+ func = ctx->func;

if (!(njs_is_function(&prop->value)
&& njs_function(&prop->value)->native
- && njs_function(&prop->value)->u.native == ctx->native))
+ && njs_native_function_same(njs_function(&prop->value), func)))
{
return NJS_OK;
}
@@ -739,7 +741,7 @@ njs_object_completions(njs_vm_t *vm, njs


njs_int_t
-njs_builtin_match_native_function(njs_vm_t *vm, njs_function_native_t func,
+njs_builtin_match_native_function(njs_vm_t *vm, njs_function_t *function,
njs_str_t *name)
{
njs_int_t ret;
@@ -750,7 +752,7 @@ njs_builtin_match_native_function(njs_vm
njs_builtin_traverse_t ctx;

ctx.type = NJS_BUILTIN_TRAVERSE_MATCH;
- ctx.native = func;
+ ctx.func = function;

/* Global object. */

diff -r 74c2de51636c -r b247b1c5531f src/njs_function.h
--- a/src/njs_function.h Wed Jan 22 15:29:44 2020 +0300
+++ b/src/njs_function.h Wed Jan 22 15:29:47 2020 +0300
@@ -203,6 +203,13 @@ njs_function_apply(njs_vm_t *vm, njs_fun
}


+njs_inline njs_bool_t
+njs_native_function_same(const njs_function_t *f1, const njs_function_t *f2)
+{
+ return f1->u.native == f2->u.native && f1->magic == f2->magic;
+}
+
+
extern const njs_object_type_init_t njs_function_type_init;
extern const njs_object_init_t njs_function_instance_init;
extern const njs_object_init_t njs_arrow_instance_init;
diff -r 74c2de51636c -r b247b1c5531f src/njs_vm.c
--- a/src/njs_vm.c Wed Jan 22 15:29:44 2020 +0300
+++ b/src/njs_vm.c Wed Jan 22 15:29:47 2020 +0300
@@ -991,8 +991,7 @@ njs_vm_add_backtrace_entry(njs_vm_t *vm,
function = function->u.bound_target;
}

- ret = njs_builtin_match_native_function(vm, function->u.native,
- &be->name);
+ ret = njs_builtin_match_native_function(vm, function, &be->name);
if (ret == NJS_OK) {
return NJS_OK;
}
diff -r 74c2de51636c -r b247b1c5531f src/njs_vm.h
--- a/src/njs_vm.h Wed Jan 22 15:29:44 2020 +0300
+++ b/src/njs_vm.h Wed Jan 22 15:29:47 2020 +0300
@@ -302,7 +302,7 @@ njs_int_t njs_vm_backtrace_to_string(njs
njs_int_t njs_builtin_objects_create(njs_vm_t *vm);
njs_int_t njs_builtin_objects_clone(njs_vm_t *vm, njs_value_t *global);
njs_int_t njs_builtin_match_native_function(njs_vm_t *vm,
- njs_function_native_t func, njs_str_t *name);
+ njs_function_t *function, njs_str_t *name);

njs_arr_t *njs_vm_completions(njs_vm_t *vm, njs_str_t *expression);

diff -r 74c2de51636c -r b247b1c5531f src/test/njs_interactive_test.c
--- a/src/test/njs_interactive_test.c Wed Jan 22 15:29:44 2020 +0300
+++ b/src/test/njs_interactive_test.c Wed Jan 22 15:29:47 2020 +0300
@@ -232,10 +232,15 @@ static njs_interactive_test_t njs_test[
" at f (:1)\n"
" at main (native)\n") },

- { njs_str("var fs = require('fs'); fs.readFile()" ENTER),
- njs_str("TypeError: \"path\" must be a string\n"
- " at fs.readFile (native)\n"
- " at main (native)\n") },
+ { njs_str("var fs = require('fs');"
+ "['readFile',"
+ " 'readFileSync',"
+ " 'writeFile',"
+ " 'writeFileSync',"
+ " 'appendFile',"
+ " 'appendFileSync']"
+ ".every(v=>{ try {fs[v]();} catch (e) { return e.stack.search(`fs.${v} `) >= 0}})" ENTER),
+ njs_str("true") },

{ njs_str("parseInt({ toString: function() { return [1] } })" ENTER),
njs_str("TypeError: Cannot convert object to primitive value\n"
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Subject Author Views Posted

[njs] Fixed match of native function is backtraces.

Dmitry Volyntsev 135 January 22, 2020 08:00AM



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