static nxt_int_t
njs_parser_name_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
nxt_uint_t level;
njs_extern_t *ext;
njs_variable_t *var;
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
ext = njs_parser_external(vm, parser);
if (ext != NULL) {
node->token = NJS_TOKEN_EXTERNAL;
node->u.value.type = NJS_EXTERNAL;
node->u.value.data.truth = 1;
node->index = (njs_index_t) ext;
} else {
node->token = token;
var = njs_parser_variable(vm, parser, &level);
if (nxt_slow_path(var == NULL)) {
return NJS_TOKEN_ERROR;
}
switch (var->state) {
case NJS_VARIABLE_CREATED:
var->state = NJS_VARIABLE_PENDING;
parser->code_size += sizeof(njs_vmcode_1addr_t);
break;
case NJS_VARIABLE_PENDING:
var->state = NJS_VARIABLE_USED;
parser->code_size += sizeof(njs_vmcode_1addr_t);
break;
case NJS_VARIABLE_USED:
parser->code_size += sizeof(njs_vmcode_1addr_t);
break;
case NJS_VARIABLE_SET:
case NJS_VARIABLE_DECLARED:
break;
}
node->lvalue = NJS_LVALUE_ENABLED;
node->u.variable = var;
}
}
parser->node = node;
return NXT_OK;
}
static njs_token_t
njs_parser_inc_dec_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token)
{
njs_token_t next;
njs_parser_node_t *node;
njs_vmcode_operation_t operation;
switch (token) {
case NJS_TOKEN_INCREMENT:
operation = njs_vmcode_increment;
break;
case NJS_TOKEN_DECREMENT:
operation = njs_vmcode_decrement;
break;
default:
return njs_parser_post_inc_dec_expression(vm, parser, token);
}
next = njs_parser_token(parser);
if (nxt_slow_path(next <= NJS_TOKEN_ILLEGAL)) {
return next;
}
next = njs_parser_call_expression(vm, parser, next);
if (nxt_slow_path(next <= NJS_TOKEN_ILLEGAL)) {
return next;
}
if (parser->node->lvalue == NJS_LVALUE_NONE) {
nxt_thread_log_error(NXT_LOG_ALERT, "lvalue required");
return NJS_TOKEN_ILLEGAL;
}
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = token;
node->u.operation = operation;
node->left = parser->node;
parser->node = node;
parser->code_size += (parser->node->token == NJS_TOKEN_NAME) ?
sizeof(njs_vmcode_3addr_t):
sizeof(njs_vmcode_prop_get_t)
+ sizeof(njs_vmcode_3addr_t)
+ sizeof(njs_vmcode_prop_set_t);
return next;
}
static njs_token_t
njs_parser_property_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token)
{
njs_token_t next;
njs_parser_node_t *node;
for ( ;; ) {
if (token != NJS_TOKEN_DOT
&& token != NJS_TOKEN_OPEN_BRACKET)
{
return token;
}
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = NJS_TOKEN_PROPERTY;
node->lvalue = NJS_LVALUE_ENABLED;
node->u.operation = njs_vmcode_property_get;
node->left = parser->node;
next = njs_parser_token(parser);
if (nxt_slow_path(next <= NJS_TOKEN_ILLEGAL)) {
return next;
}
if (token == NJS_TOKEN_DOT) {
if (next != NJS_TOKEN_NAME) {
return NJS_TOKEN_ILLEGAL;
}
token = njs_parser_property_name(vm, parser, next);
} else {
token = njs_parser_property_brackets(vm, parser, next);
}
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node->right = parser->node;
parser->node = node;
parser->code_size += sizeof(njs_vmcode_prop_get_t);
}
}
njs_token_t
njs_parser_arguments(njs_vm_t *vm, njs_parser_t *parser,
njs_parser_node_t *parent)
{
njs_token_t token;
njs_index_t index;
njs_parser_node_t *node;
index = NJS_SCOPE_CALLEE_ARGUMENTS;
do {
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
if (token == NJS_TOKEN_CLOSE_PARENTHESIS) {
break;
}
token = njs_parser_assignment_expression(vm, parser, NULL, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = NJS_TOKEN_ARGUMENT;
node->index = index;
index += sizeof(njs_value_t);
node->left = parser->node;
parser->node->dest = node;
parent->right = node;
parent = node;
parser->code_size += sizeof(njs_vmcode_move_t);
} while (token == NJS_TOKEN_COMMA);
if (nxt_slow_path(token != NJS_TOKEN_CLOSE_PARENTHESIS)) {
return NJS_TOKEN_ILLEGAL;
}
return token;
}
static nxt_int_t
njs_parser_null_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
node->u.value = njs_value_null;
parser->node = node;
return NXT_OK;
}
return NXT_ERROR;
}
static nxt_int_t
njs_parser_this_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
node->index = NJS_INDEX_THIS;
parser->node = node;
return NXT_OK;
}
return NXT_ERROR;
}
static nxt_int_t
njs_parser_boolean_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
node->u.value = (parser->lexer->number == 0.0) ? njs_value_false:
njs_value_true;
parser->node = node;
return NXT_OK;
}
return NXT_ERROR;
}
static nxt_int_t
njs_parser_node(njs_vm_t *vm, njs_parser_t *parser, njs_token_t token,
const void *data)
{
njs_parser_node_t *node;
token = (njs_token_t) data;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
node->left = parser->node;
parser->node = node;
return NXT_OK;
}
return NXT_ERROR;
}
njs_token_t
njs_parser_property_name(njs_vm_t *vm, njs_parser_t *parser, njs_token_t token)
{
nxt_int_t ret;
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = NJS_TOKEN_STRING;
ret = njs_parser_string_create(vm, &node->u.value);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
parser->node = node;
return njs_parser_token(parser);
}
static nxt_int_t
njs_parser_number_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
double num;
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
num = parser->lexer->number;
node->u.value.data.u.number = num;
node->u.value.type = NJS_NUMBER;
node->u.value.data.truth = njs_is_number_true(num);
parser->node = node;
return NXT_OK;
}
return NXT_ERROR;
}
static nxt_int_t
njs_parser_unary_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
njs_parser_node_t *node;
njs_vmcode_operation_t operation;
operation = (njs_vmcode_operation_t) data;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
node->u.operation = operation;
parser->node = node;
parser->code_size += sizeof(njs_vmcode_2addr_t);
return NXT_OK;
}
return NXT_ERROR;
}
static nxt_int_t
njs_parser_condition_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
node->left = parser->node;
parser->node = node;
parser->code_size += sizeof(njs_vmcode_cond_jump_t)
+ sizeof(njs_vmcode_move_t)
+ sizeof(njs_vmcode_jump_t)
+ sizeof(njs_vmcode_move_t);
parser->branch = 1;
return NXT_OK;
}
return NXT_ERROR;
}
static nxt_int_t
njs_parser_string_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token, const void *data)
{
nxt_int_t ret;
njs_parser_node_t *node;
node = njs_parser_node_alloc(vm);
if (nxt_fast_path(node != NULL)) {
node->token = token;
ret = njs_parser_string_create(vm, &node->u.value);
if (nxt_slow_path(ret != NXT_OK)) {
return NJS_TOKEN_ERROR;
}
parser->node = node;
return NXT_OK;
}
return NXT_ERROR;
}
njs_token_t
njs_parser_var_expression(njs_vm_t *vm, njs_parser_t *parser, njs_token_t token)
{
size_t size;
njs_parser_node_t *node, *pending;
njs_vmcode_operation_t operation;
token = njs_parser_conditional_expression(vm, parser, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
for ( ;; ) {
size = sizeof(njs_vmcode_3addr_t);
switch (token) {
case NJS_TOKEN_ASSIGNMENT:
nxt_thread_log_debug("JS: =");
operation = njs_vmcode_move;
size = sizeof(njs_vmcode_move_t);
break;
case NJS_TOKEN_LINE_END:
token = njs_lexer_token(parser->lexer);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
if (njs_parser_expression_operator(token)) {
continue;
}
/* Fall through. */
default:
return token;
}
node = parser->node;
if (node->lvalue == NJS_LVALUE_NONE) {
nxt_thread_log_error(NXT_LOG_ALERT, "lvalue required");
return NJS_TOKEN_ILLEGAL;
}
pending = NULL;
if (node->token == NJS_TOKEN_NAME) {
node->state = NJS_VARIABLE_ASSIGNMENT;
if (node->u.variable->state == NJS_VARIABLE_PENDING) {
pending = node;
}
}
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = token;
node->u.operation = operation;
node->left = parser->node;
parser->code_size += size;
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
token = njs_parser_var_expression(vm, parser, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node->right = parser->node;
parser->node = node;
if (pending != NULL
&& pending->u.variable->state == NJS_VARIABLE_PENDING)
{
pending->u.variable->state = NJS_VARIABLE_SET;
parser->code_size -= sizeof(njs_vmcode_1addr_t);
if (!parser->branch) {
pending->state = NJS_VARIABLE_FIRST_ASSIGNMENT;
}
}
}
}
static njs_token_t
njs_parser_assignment_expression(njs_vm_t *vm, njs_parser_t *parser,
const njs_parser_expression_t *expr, njs_token_t token)
{
size_t size;
njs_parser_node_t *node, *pending;
njs_vmcode_operation_t operation;
token = njs_parser_conditional_expression(vm, parser, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
for ( ;; ) {
switch (token) {
case NJS_TOKEN_ASSIGNMENT:
nxt_thread_log_debug("JS: =");
operation = njs_vmcode_move;
break;
case NJS_TOKEN_ADDITION_ASSIGNMENT:
nxt_thread_log_debug("JS: +=");
operation = njs_vmcode_addition;
break;
case NJS_TOKEN_SUBSTRACTION_ASSIGNMENT:
nxt_thread_log_debug("JS: -=");
operation = njs_vmcode_substraction;
break;
case NJS_TOKEN_MULTIPLICATION_ASSIGNMENT:
nxt_thread_log_debug("JS: *=");
operation = njs_vmcode_multiplication;
break;
case NJS_TOKEN_DIVISION_ASSIGNMENT:
nxt_thread_log_debug("JS: /=");
operation = njs_vmcode_division;
break;
case NJS_TOKEN_REMAINDER_ASSIGNMENT:
nxt_thread_log_debug("JS: %=");
operation = njs_vmcode_remainder;
break;
case NJS_TOKEN_LEFT_SHIFT_ASSIGNMENT:
nxt_thread_log_debug("JS: <<=");
operation = njs_vmcode_left_shift;
break;
case NJS_TOKEN_RIGHT_SHIFT_ASSIGNMENT:
nxt_thread_log_debug("JS: >>=");
operation = njs_vmcode_right_shift;
break;
case NJS_TOKEN_UNSIGNED_RIGHT_SHIFT_ASSIGNMENT:
nxt_thread_log_debug("JS: >>=");
operation = njs_vmcode_unsigned_right_shift;
break;
case NJS_TOKEN_BITWISE_AND_ASSIGNMENT:
nxt_thread_log_debug("JS: &=");
operation = njs_vmcode_bitwise_and;
break;
case NJS_TOKEN_BITWISE_XOR_ASSIGNMENT:
nxt_thread_log_debug("JS: ^=");
operation = njs_vmcode_bitwise_xor;
break;
case NJS_TOKEN_BITWISE_OR_ASSIGNMENT:
nxt_thread_log_debug("JS: |=");
operation = njs_vmcode_bitwise_or;
break;
case NJS_TOKEN_LINE_END:
token = njs_lexer_token(parser->lexer);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
if (njs_parser_expression_operator(token)) {
continue;
}
/* Fall through. */
default:
return token;
}
node = parser->node;
if (node->lvalue == NJS_LVALUE_NONE) {
nxt_thread_log_error(NXT_LOG_ALERT, "lvalue required");
return NJS_TOKEN_ILLEGAL;
}
pending = NULL;
if (node->token == NJS_TOKEN_NAME) {
if (token == NJS_TOKEN_ASSIGNMENT) {
node->state = NJS_VARIABLE_ASSIGNMENT;
if (node->u.variable->state == NJS_VARIABLE_PENDING) {
pending = node;
}
} else if (node->u.variable->state == NJS_VARIABLE_PENDING) {
node->u.variable->state = NJS_VARIABLE_USED;
}
}
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = token;
node->u.operation = operation;
node->left = parser->node;
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
token = njs_parser_assignment_expression(vm, parser, NULL, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node->right = parser->node;
parser->node = node;
if (node->left->token == NJS_TOKEN_NAME) {
if (node->token == NJS_TOKEN_ASSIGNMENT) {
size = sizeof(njs_vmcode_move_t);
} else {
if (njs_parser_has_side_effect(node->right)) {
size = sizeof(njs_vmcode_move_t)
+ sizeof(njs_vmcode_3addr_t);
} else {
size = sizeof(njs_vmcode_3addr_t);
}
}
} else {
if (node->token == NJS_TOKEN_ASSIGNMENT) {
size = sizeof(njs_vmcode_prop_set_t);
if (njs_parser_has_side_effect(node->right)) {
size += 2 * sizeof(njs_vmcode_move_t);
}
} else {
size = sizeof(njs_vmcode_prop_get_t)
+ sizeof(njs_vmcode_3addr_t)
+ sizeof(njs_vmcode_prop_set_t);
}
}
parser->code_size += size;
if (pending != NULL
&& pending->u.variable->state == NJS_VARIABLE_PENDING)
{
pending->u.variable->state = NJS_VARIABLE_SET;
if (!parser->branch) {
pending->state = NJS_VARIABLE_FIRST_ASSIGNMENT;
}
}
}
}
static njs_token_t
njs_parser_call_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token)
{
nxt_bool_t ctor;
njs_parser_node_t *func, *node;
ctor = 0;
if (token == NJS_TOKEN_NEW) {
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
ctor = 1;
}
token = njs_parser_terminal(vm, parser, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
for ( ;; ) {
token = njs_parser_property_expression(vm, parser, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node = parser->node;
if (token != NJS_TOKEN_OPEN_PARENTHESIS) {
/* TODO: var o = new Object; */
node->ctor = ctor;
return token;
}
switch (node->token) {
case NJS_TOKEN_NAME:
func = node;
func->token = NJS_TOKEN_FUNCTION_CALL;
parser->code_size += sizeof(njs_vmcode_function_frame_t)
+ sizeof(njs_vmcode_function_call_t);
break;
case NJS_TOKEN_FUNCTION_EXPRESSION:
func = njs_parser_node_alloc(vm);
if (nxt_slow_path(func == NULL)) {
return NJS_TOKEN_ERROR;
}
func->token = NJS_TOKEN_FUNCTION_CALL;
func->left = node;
func->index = node->index;
parser->code_size += sizeof(njs_vmcode_function_frame_t)
+ sizeof(njs_vmcode_function_call_t);
break;
case NJS_TOKEN_PROPERTY:
func = njs_parser_node_alloc(vm);
if (nxt_slow_path(func == NULL)) {
return NJS_TOKEN_ERROR;
}
func->token = NJS_TOKEN_METHOD_CALL;
func->left = node;
parser->code_size += sizeof(njs_vmcode_method_frame_t)
+ sizeof(njs_vmcode_function_call_t);
break;
default:
/*
* NJS_TOKEN_OPEN_PARENTHESIS,
* NJS_TOKEN_OBJECT_CONSTRUCTOR,
* NJS_TOKEN_ARRAY_CONSTRUCTOR,
* NJS_TOKEN_BOOLEAN_CONSTRUCTOR,
* NJS_TOKEN_NUMBER_CONSTRUCTOR,
* NJS_TOKEN_STRING_CONSTRUCTOR,
* NJS_TOKEN_FUNCTION_CONSTRUCTOR,
* NJS_TOKEN_REGEXP_CONSTRUCTOR,
* NJS_TOKEN_EVAL.
*/
func = njs_parser_node_alloc(vm);
if (nxt_slow_path(func == NULL)) {
return NJS_TOKEN_ERROR;
}
func->token = NJS_TOKEN_FUNCTION_CALL;
func->left = node;
parser->code_size += sizeof(njs_vmcode_function_frame_t)
+ sizeof(njs_vmcode_function_call_t);
break;
}
token = njs_parser_arguments(vm, parser, func);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
parser->node = func;
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
}
}
njs_token_t
njs_parser_conditional_expression(njs_vm_t *vm, njs_parser_t *parser,
njs_token_t token)
{
njs_parser_node_t *node, *cond;
token = njs_parser_binary_expression(vm, parser,
&njs_parser_logical_or_expression,
token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
for ( ;; ) {
if (token != NJS_TOKEN_CONDITIONAL) {
return token;
}
parser->branch = 1;
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
cond = njs_parser_node_alloc(vm);
if (nxt_slow_path(cond == NULL)) {
return NJS_TOKEN_ERROR;
}
cond->token = NJS_TOKEN_CONDITIONAL;
cond->left = parser->node;
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
cond->right = node;
node->token = NJS_TOKEN_BRANCHING;
token = njs_parser_assignment_expression(vm, parser, NULL, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
if (nxt_slow_path(token != NJS_TOKEN_COLON)) {
return NJS_TOKEN_ILLEGAL;
}
node->left = parser->node;
node->left->dest = cond;
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
token = njs_parser_assignment_expression(vm, parser, NULL, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node->right = parser->node;
node->right->dest = cond;
parser->node = cond;
parser->code_size += sizeof(njs_vmcode_cond_jump_t)
+ sizeof(njs_vmcode_move_t)
+ sizeof(njs_vmcode_jump_t)
+ sizeof(njs_vmcode_move_t);
}
}
static njs_token_t
njs_parser_unary_expression(njs_vm_t *vm, njs_parser_t *parser,
const njs_parser_expression_t *expr, njs_token_t token)
{
double num;
njs_token_t next;
njs_parser_node_t *node;
njs_vmcode_operation_t operation;
switch (token) {
case NJS_TOKEN_ADDITION:
token = NJS_TOKEN_UNARY_PLUS;
operation = njs_vmcode_unary_plus;
break;
case NJS_TOKEN_SUBSTRACTION:
token = NJS_TOKEN_UNARY_NEGATION;
operation = njs_vmcode_unary_negation;
break;
case NJS_TOKEN_LOGICAL_NOT:
operation = njs_vmcode_logical_not;
break;
case NJS_TOKEN_BITWISE_NOT:
operation = njs_vmcode_bitwise_not;
break;
case NJS_TOKEN_TYPEOF:
operation = njs_vmcode_typeof;
break;
case NJS_TOKEN_VOID:
operation = njs_vmcode_void;
break;
case NJS_TOKEN_DELETE:
operation = njs_vmcode_delete;
break;
default:
return njs_parser_inc_dec_expression(vm, parser, token);
}
next = njs_parser_token(parser);
if (nxt_slow_path(next <= NJS_TOKEN_ILLEGAL)) {
return next;
}
next = njs_parser_unary_expression(vm, parser, NULL, next);
if (nxt_slow_path(next <= NJS_TOKEN_ILLEGAL)) {
return next;
}
if (token == NJS_TOKEN_UNARY_PLUS
&& parser->node->token == NJS_TOKEN_NUMBER)
{
/* Skip the unary plus of number. */
return next;
}
if (token == NJS_TOKEN_UNARY_NEGATION
&& parser->node->token == NJS_TOKEN_NUMBER)
{
/* Optimization of common negative number. */
node = parser->node;
num = -node->u.value.data.u.number;
node->u.value.data.u.number = num;
node->u.value.data.truth = njs_is_number_true(num);
return next;
}
if (token == NJS_TOKEN_TYPEOF
&& parser->node->token == NJS_TOKEN_NAME)
{
parser->node->state = NJS_VARIABLE_TYPEOF;
} else if (token == NJS_TOKEN_DELETE
&& parser->node->token == NJS_TOKEN_PROPERTY)
{
parser->node->token = NJS_TOKEN_PROPERTY_DELETE;
parser->node->u.operation = njs_vmcode_property_delete;
parser->code_size += sizeof(njs_vmcode_3addr_t);
return next;
}
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = token;
node->u.operation = operation;
node->left = parser->node;
node->left->dest = node;
parser->node = node;
parser->code_size += sizeof(njs_vmcode_2addr_t);
return next;
}
static njs_token_t
njs_parser_binary_expression(njs_vm_t *vm, njs_parser_t *parser,
const njs_parser_expression_t *expr, njs_token_t token)
{
nxt_int_t n;
njs_parser_node_t *node;
const njs_parser_operation_t *op;
token = expr->next(vm, parser, expr->expression, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
for ( ;; ) {
n = expr->count;
op = expr->op;
do {
if (op->token == token) {
goto found;
}
op++;
n--;
} while (n != 0);
if (token == NJS_TOKEN_LINE_END) {
token = njs_lexer_token(parser->lexer);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
if (njs_parser_expression_operator(token)) {
continue;
}
}
return token;
found:
node = njs_parser_node_alloc(vm);
if (nxt_slow_path(node == NULL)) {
return NJS_TOKEN_ERROR;
}
node->token = token;
node->u.operation = op->operation;
node->left = parser->node;
node->left->dest = node;
parser->code_size += op->size;
token = njs_parser_token(parser);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
token = expr->next(vm, parser, expr->expression, token);
if (nxt_slow_path(token <= NJS_TOKEN_ILLEGAL)) {
return token;
}
node->right = parser->node;
node->right->dest = node;
parser->node = node;
}
}
