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[njs] The typeof operation did not work in functions.

April 03, 2018 10:58AM
details: http://hg.nginx.org/njs/rev/671d9dd1ffeb
branches:
changeset: 487:671d9dd1ffeb
user: Igor Sysoev <igor@sysoev.ru>
date: Tue Apr 03 17:55:04 2018 +0300
description:
The typeof operation did not work in functions.

diffstat:

njs/njs_parser.c | 14 +++++++-------
njs/njs_parser.h | 8 ++++----
njs/njs_parser_expression.c | 4 ++++
njs/njs_variable.c | 9 ++++++---
njs/njs_variable.h | 7 +++++++
njs/test/njs_unit_test.c | 3 +++
6 files changed, 31 insertions(+), 14 deletions(-)

diffs (169 lines):

diff -r 08b637d9a099 -r 671d9dd1ffeb njs/njs_parser.c
--- a/njs/njs_parser.c Tue Apr 03 14:51:22 2018 +0300
+++ b/njs/njs_parser.c Tue Apr 03 17:55:04 2018 +0300
@@ -483,7 +483,7 @@ njs_parser_function_declaration(njs_vm_t
return NJS_TOKEN_ERROR;
}

- ret = njs_variable_reference(vm, parser, node, 0);
+ ret = njs_variable_reference(vm, parser, node, NJS_DECLARATION);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
@@ -857,7 +857,7 @@ njs_parser_var_statement(njs_vm_t *vm, n

name->token = NJS_TOKEN_NAME;

- ret = njs_variable_reference(vm, parser, name, 0);
+ ret = njs_variable_reference(vm, parser, name, NJS_DECLARATION);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
@@ -1342,7 +1342,7 @@ njs_parser_for_var_statement(njs_vm_t *v

name->token = NJS_TOKEN_NAME;

- ret = njs_variable_reference(vm, parser, name, 0);
+ ret = njs_variable_reference(vm, parser, name, NJS_DECLARATION);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
@@ -1634,7 +1634,7 @@ njs_parser_try_statement(njs_vm_t *vm, n

node->token = NJS_TOKEN_NAME;

- ret = njs_variable_reference(vm, parser, node, 0);
+ ret = njs_variable_reference(vm, parser, node, NJS_DECLARATION);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
@@ -1852,7 +1852,7 @@ njs_parser_terminal(njs_vm_t *vm, njs_pa
break;
}

- ret = njs_variable_reference(vm, parser, node, 1);
+ ret = njs_variable_reference(vm, parser, node, NJS_REFERENCE);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
@@ -2106,7 +2106,7 @@ njs_parser_builtin_object(njs_vm_t *vm,
var->value.type = NJS_OBJECT;
var->value.data.truth = 1;

- ret = njs_variable_reference(vm, parser, node, 1);
+ ret = njs_variable_reference(vm, parser, node, NJS_REFERENCE);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
@@ -2139,7 +2139,7 @@ njs_parser_builtin_function(njs_vm_t *vm
var->value.type = NJS_FUNCTION;
var->value.data.truth = 1;

- ret = njs_variable_reference(vm, parser, node, 1);
+ ret = njs_variable_reference(vm, parser, node, NJS_REFERENCE);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
diff -r 08b637d9a099 -r 671d9dd1ffeb njs/njs_parser.h
--- a/njs/njs_parser.h Tue Apr 03 14:51:22 2018 +0300
+++ b/njs/njs_parser.h Tue Apr 03 17:55:04 2018 +0300
@@ -255,9 +255,9 @@ typedef struct njs_parser_node_s njs_

struct njs_parser_node_s {
njs_token_t token:16;
- uint8_t ctor:1; /* 1 bit */
- uint8_t temporary; /* 1 bit */
- uint8_t reference; /* 1 bit */
+ uint8_t ctor:1;
+ njs_variable_reference_t reference:2;
+ uint8_t temporary; /* 1 bit */
uint32_t token_line;
uint32_t variable_name_hash;

@@ -381,7 +381,7 @@ njs_token_t njs_parser_property_token(nj
njs_token_t njs_parser_token(njs_parser_t *parser);
nxt_int_t njs_parser_string_create(njs_vm_t *vm, njs_value_t *value);
njs_ret_t njs_variable_reference(njs_vm_t *vm, njs_parser_t *parser,
- njs_parser_node_t *node, nxt_bool_t reference);
+ njs_parser_node_t *node, njs_variable_reference_t reference);
njs_variable_t *njs_variable_get(njs_vm_t *vm, njs_parser_node_t *node);
njs_index_t njs_variable_typeof(njs_vm_t *vm, njs_parser_node_t *node);
njs_index_t njs_variable_index(njs_vm_t *vm, njs_parser_node_t *node);
diff -r 08b637d9a099 -r 671d9dd1ffeb njs/njs_parser_expression.c
--- a/njs/njs_parser_expression.c Tue Apr 03 14:51:22 2018 +0300
+++ b/njs/njs_parser_expression.c Tue Apr 03 17:55:04 2018 +0300
@@ -805,6 +805,10 @@ njs_parser_unary_expression(njs_vm_t *vm
}
}

+ if (token == NJS_TOKEN_TYPEOF && parser->node->token == NJS_TOKEN_NAME) {
+ parser->node->reference = NJS_TYPEOF;
+ }
+
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
diff -r 08b637d9a099 -r 671d9dd1ffeb njs/njs_variable.c
--- a/njs/njs_variable.c Tue Apr 03 14:51:22 2018 +0300
+++ b/njs/njs_variable.c Tue Apr 03 17:55:04 2018 +0300
@@ -193,7 +193,7 @@ const nxt_lvlhsh_proto_t njs_reference_

njs_ret_t
njs_variable_reference(njs_vm_t *vm, njs_parser_t *parser,
- njs_parser_node_t *node, nxt_bool_t reference)
+ njs_parser_node_t *node, njs_variable_reference_t reference)
{
njs_ret_t ret;
nxt_lvlhsh_query_t lhq;
@@ -277,8 +277,11 @@ njs_variables_scope_resolve(njs_vm_t *vm
}

var = njs_variable_get(vm, node);
+
if (nxt_slow_path(var == NULL)) {
- return NXT_ERROR;
+ if (node->reference != NJS_TYPEOF) {
+ return NXT_ERROR;
+ }
}
}
}
@@ -397,7 +400,7 @@ njs_variable_get(njs_vm_t *vm, njs_parse
var->argument = index;
}

- if (node->reference && var->type <= NJS_VARIABLE_LET) {
+ if (node->reference != NJS_DECLARATION && var->type <= NJS_VARIABLE_LET) {
goto not_found;
}

diff -r 08b637d9a099 -r 671d9dd1ffeb njs/njs_variable.h
--- a/njs/njs_variable.h Tue Apr 03 14:51:22 2018 +0300
+++ b/njs/njs_variable.h Tue Apr 03 17:55:04 2018 +0300
@@ -18,6 +18,13 @@ typedef enum {
} njs_variable_type_t;


+typedef enum {
+ NJS_DECLARATION = 0,
+ NJS_REFERENCE,
+ NJS_TYPEOF,
+} njs_variable_reference_t;
+
+
typedef struct {
nxt_str_t name;

diff -r 08b637d9a099 -r 671d9dd1ffeb njs/test/njs_unit_test.c
--- a/njs/test/njs_unit_test.c Tue Apr 03 14:51:22 2018 +0300
+++ b/njs/test/njs_unit_test.c Tue Apr 03 17:55:04 2018 +0300
@@ -2318,6 +2318,9 @@ static njs_unit_test_t njs_test[] =
{ nxt_string("var a = 5; typeof a"),
nxt_string("number") },

+ { nxt_string("function f() { return typeof a } ; f()"),
+ nxt_string("undefined") },
+
{ nxt_string("typeof a; a"),
nxt_string("ReferenceError: \"a\" is not defined in 1") },

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Subject Author Views Posted

[njs] The typeof operation did not work in functions.

Igor Sysoev 610 April 03, 2018 10:58AM



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