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bench.ideal.c
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/* The difference between zend_symtable_X and zend_hash_X is that
* the _symtable version will check if the key is a string of an
* integer, and if so, use the int version instead. We can use the
* zend_hash_X versions safely for symbol tables, since
* variables cant be integer strings, but we cant safely use
* zend_hash_X versions for hashtable lookups. Well-named, they are.
*/
/* An important note of zval*s and zval**s. Frequently, zval** are
* fetched from arrays and symbol tables. The zval** will point into
* the array, and so updating it will update the relevant array
* entry. It is normally not the same to dereference it to a local
* variable, and pass a reference to that */
/* The function call mechanism deals specially with
* EG(uninitialize_zval_ptr) (or sometime EG(uninitialize_zval)), so
* we need to use this too. This particular zval can also be set, so
* theres no guarantee that it's NULL, that its refcount is 1, or that
* is_ref is 0. So it needs to be treated carefully. */
// Some common functions
#include "php.h"
/*
* The runtime needs its own initialization and finalization
* phc is responsible for calling these functions
*/
void
init_runtime ()
{
}
void
finalize_runtime ()
{
}
/* Make a copy of *P_ZVP, storing it in *P_ZVP. */
static void
zvp_clone_ex (zval ** p_zvp)
{
zval *clone;
MAKE_STD_ZVAL (clone);
clone->value = (*p_zvp)->value;
clone->type = (*p_zvp)->type;
zval_copy_ctor (clone);
*p_zvp = clone;
}
static inline int
in_copy_on_write (zval * zvp)
{
return (zvp->refcount > 1 && !zvp->is_ref);
}
static inline int
in_change_on_write (zval * zvp)
{
return (zvp->refcount > 1 && zvp->is_ref);
}
/* If *P_ZVP is in a copy-on-write set, separate it by overwriting
* *P_ZVP with a clone of itself, and lowering the refcount on the
* original. */
static void
sep_copy_on_write_ex (zval ** p_zvp)
{
if (!in_copy_on_write (*p_zvp))
return;
zval *old = *p_zvp;
zvp_clone_ex (p_zvp);
zval_ptr_dtor (&old);
}
/* If *P_ZVP is in a copy-on-write set, separate it by overwriting
* *P_ZVP with a clone of itself, and lowering the refcount on the
* original. */
static void
sep_change_on_write (zval ** p_zvp)
{
if (!in_change_on_write (*p_zvp))
return;
zval *old = *p_zvp;
zvp_clone_ex (p_zvp);
zval_ptr_dtor (&old);
}
static zval *
read_string_index (zval * var, zval * ind TSRMLS_DC)
{
// This must always allocate memory, since we cant return the
// passed string.
assert (Z_TYPE_P (var) == IS_STRING);
long index;
switch (Z_TYPE_P (ind))
{
case IS_DOUBLE:
index = (long) Z_DVAL_P (ind);
break;
case IS_LONG:
case IS_BOOL:
index = Z_LVAL_P (ind);
break;
default:
php_error_docref (NULL TSRMLS_CC, E_WARNING, "Illegal offset type");
case IS_NULL:
index = 0;
break;
}
zval *result;
ALLOC_INIT_ZVAL (result);
if (index >= Z_STRLEN_P (var))
{
// this is 1 byte long, must be copied
ZVAL_STRINGL (result, "", 0, 1);
}
else
{
char *string = Z_STRVAL_P (var);
ZVAL_STRINGL (result, &string[index], 1, 1);
}
return result;
}
// Extract the hashtable from a hash-valued zval
static HashTable *
extract_ht_ex (zval * arr TSRMLS_DC)
{
assert (!in_copy_on_write (arr));
if (Z_TYPE_P (arr) == IS_NULL)
{
array_init (arr);
}
else if (Z_TYPE_P (arr) != IS_ARRAY)
{
php_error_docref (NULL TSRMLS_CC, E_WARNING,
"Cannot use a scalar value as an array");
array_init (arr);
}
return Z_ARRVAL_P (arr);
}
/* P_VAR points into a symbol table, at a variable which we wish to index as a hashtable. */
static HashTable *
extract_ht (zval ** p_var TSRMLS_DC)
{
sep_copy_on_write_ex (p_var);
return extract_ht_ex (*p_var TSRMLS_CC);
}
/* Assign RHS into LHS, by reference. After this, LHS will point to the same
* zval* as RHS. */
static void
copy_into_ref (zval ** lhs, zval ** rhs)
{
sep_copy_on_write_ex (rhs);
(*rhs)->is_ref = 1;
(*rhs)->refcount++;
zval_ptr_dtor (lhs);
*lhs = *rhs;
}
/* Using IND as a key to HT, call the appropriate zend_index_X
* function with data as a parameter, and return its result. This
* updates the zval** pointed to by DATA. */
static int
ht_find (HashTable * ht, zval * ind, zval *** data)
{
int result;
if (Z_TYPE_P (ind) == IS_LONG || Z_TYPE_P (ind) == IS_BOOL)
{
result = zend_hash_index_find (ht, Z_LVAL_P (ind), (void **) data);
}
else if (Z_TYPE_P (ind) == IS_DOUBLE)
{
result = zend_hash_index_find (ht, (long) Z_DVAL_P (ind),
(void **) data);
}
else if (Z_TYPE_P (ind) == IS_NULL)
{
result = zend_hash_find (ht, "", sizeof (""), (void **)data);
}
else if (Z_TYPE_P (ind) == IS_STRING)
{
result = zend_symtable_find (ht, Z_STRVAL_P (ind),
Z_STRLEN_P (ind) + 1, (void **) data);
}
else
{
// TODO avoid alloc
// use a string index for other types
zval *string_index;
MAKE_STD_ZVAL (string_index);
string_index->value = ind->value;
string_index->type = ind->type;
zval_copy_ctor (string_index);
convert_to_string (string_index);
result = zend_symtable_find (ht, Z_STRVAL_P (string_index),
Z_STRLEN_P (string_index) + 1,
(void **) data);
zval_ptr_dtor (&string_index);
}
return result;
}
// Update a hashtable using a zval* index
static void
ht_update (HashTable * ht, zval * ind, zval * val, zval *** dest)
{
int result;
if (Z_TYPE_P (ind) == IS_LONG || Z_TYPE_P (ind) == IS_BOOL)
{
result = zend_hash_index_update (ht, Z_LVAL_P (ind), &val,
sizeof (zval *), (void **) dest);
}
else if (Z_TYPE_P (ind) == IS_DOUBLE)
{
result = zend_hash_index_update (ht, (long) Z_DVAL_P (ind),
&val, sizeof (zval *), (void **) dest);
}
else if (Z_TYPE_P (ind) == IS_NULL)
{
result = zend_hash_update (ht, "", sizeof (""), &val,
sizeof (zval *), (void **) dest);
}
else if (Z_TYPE_P (ind) == IS_STRING)
{
result = zend_symtable_update (ht, Z_STRVAL_P (ind),
Z_STRLEN_P (ind) + 1,
&val, sizeof (zval *), (void **) dest);
}
else
{
// TODO avoid alloc
zval *string_index;
MAKE_STD_ZVAL (string_index);
string_index->value = ind->value;
string_index->type = ind->type;
zval_copy_ctor (string_index);
convert_to_string (string_index);
result = zend_symtable_update (ht, Z_STRVAL_P (string_index),
Z_STRLEN_P (string_index) + 1,
&val, sizeof (zval *), (void **) dest);
zval_ptr_dtor (&string_index);
}
assert (result == SUCCESS);
}
// Delete from a hashtable using a zval* index
static void
ht_delete (HashTable * ht, zval * ind)
{
// This may fail if the index doesnt exist, which is fine.
int result;
if (Z_TYPE_P (ind) == IS_LONG || Z_TYPE_P (ind) == IS_BOOL)
{
zend_hash_index_del (ht, Z_LVAL_P (ind));
}
else if (Z_TYPE_P (ind) == IS_DOUBLE)
{
zend_hash_index_del (ht, (long) Z_DVAL_P (ind));
}
else if (Z_TYPE_P (ind) == IS_NULL)
{
zend_hash_del (ht, "", sizeof (""));
}
else if (Z_TYPE_P (ind) == IS_STRING)
{
zend_hash_del (ht, Z_STRVAL_P (ind), Z_STRLEN_P (ind) + 1);
}
else
{
// TODO avoid alloc
zval *string_index;
MAKE_STD_ZVAL (string_index);
string_index->value = ind->value;
string_index->type = ind->type;
zval_copy_ctor (string_index);
convert_to_string (string_index);
zend_hash_del (ht, Z_STRVAL_P (string_index),
Z_STRLEN_P (string_index) + 1);
zval_ptr_dtor (&string_index);
}
}
// Check if a key exists in a hashtable
static int
ht_exists (HashTable * ht, zval * ind)
{
int result;
if (Z_TYPE_P (ind) == IS_LONG || Z_TYPE_P (ind) == IS_BOOL)
{
return zend_hash_index_exists (ht, Z_LVAL_P (ind));
}
else if (Z_TYPE_P (ind) == IS_DOUBLE)
{
return zend_hash_index_exists (ht, (long) Z_DVAL_P (ind));
}
else if (Z_TYPE_P (ind) == IS_NULL)
{
return zend_hash_exists (ht, "", sizeof (""));
}
else if (Z_TYPE_P (ind) == IS_STRING)
{
return zend_hash_exists (ht, Z_STRVAL_P (ind), Z_STRLEN_P (ind) + 1);
}
else
{
// TODO avoid alloc
int result;
zval *string_index;
MAKE_STD_ZVAL (string_index);
string_index->value = ind->value;
string_index->type = ind->type;
zval_copy_ctor (string_index);
convert_to_string (string_index);
result = zend_hash_exists (ht, Z_STRVAL_P (string_index),
Z_STRLEN_P (string_index) + 1);
zval_ptr_dtor (&string_index);
return result;
}
assert (0);
}
static void
ht_debug (HashTable * ht)
{
printf ("\nHASH\n");
if (ht == NULL)
{
printf ("NULL\n");
return;
}
for (zend_hash_internal_pointer_reset (ht);
zend_hash_has_more_elements (ht) == SUCCESS;
zend_hash_move_forward (ht))
{
char *key;
unsigned keylen;
unsigned long idx;
int type;
zval **ppzval;
zval *zvp;
type = zend_hash_get_current_key_ex (ht, &key, &keylen, &idx, 0, NULL);
zend_hash_get_current_data (ht, (void **) &ppzval);
zvp = *ppzval;
if (type == HASH_KEY_IS_STRING)
{
printf ("%s", key);
}
else
{
printf ("%ld", idx);
}
printf (": addr = %08lX, refcount = %d, is_ref = %d ",
(long unsigned int) (*ppzval), (*ppzval)->refcount,
(*ppzval)->is_ref);
switch (Z_TYPE_P (zvp))
{
case IS_NULL:
printf ("(NULL)");
break;
case IS_LONG:
printf ("(%ldL)", Z_LVAL_P (zvp));
break;
case IS_DOUBLE:
printf ("(%lff)", Z_DVAL_P (zvp));
break;
case IS_BOOL:
printf (Z_BVAL_P (zvp) ? "(true)" : "(false)");
break;
case IS_ARRAY:
printf ("(array(%d))", Z_ARRVAL_P (zvp)->nNumOfElements);
break;
case IS_OBJECT:
printf ("(Object)");
break;
case IS_STRING:
printf ("(\"%s\")", Z_STRVAL_P (zvp));
break;
case IS_RESOURCE:
printf ("(Resource)");
break;
default:
printf ("(Invalid: %d)", Z_TYPE_P (zvp));
}
printf ("\n");
}
printf ("END HASH\n");
}
// Call ht_debug on the named var in the given symbol table
static void
ht_var_debug (HashTable * st, char *name)
{
zval **p_zvp;
if (zend_symtable_find (st, name, strlen (name) + 1,
(void **) &p_zvp) != SUCCESS)
{
printf ("VAR NOT IN SYMBOL TABLE: '%s'\n", name);
return;
}
if (Z_TYPE_P (*p_zvp) != IS_ARRAY)
{
printf ("NOT HASH\n");
return;
}
ht_debug ((*p_zvp)->value.ht);
}
/* Make a copy of *P_ZVP and store it in *P_ZVP. If *IS_ZVP_NEW is
* set, call the destructor on *P_ZVP before copying. *IS_ZVP_NEW is
* set to true. */
static void
zvp_clone (zval ** p_zvp, int *is_zvp_new)
{
zval *old = *p_zvp;
zvp_clone_ex (p_zvp);
if (*is_zvp_new)
zval_ptr_dtor (&old);
*is_zvp_new = 1;
}
// Overwrite one zval with another
static void
overwrite_lhs (zval * lhs, zval * rhs)
{
// First, call the destructor to remove any data structures
// associated with lhs that will now be overwritten
zval_dtor (lhs);
// Overwrite LHS
lhs->value = rhs->value;
lhs->type = rhs->type;
zval_copy_ctor (lhs);
}
// Overwrite one zval with another
static void
overwrite_lhs_no_copy (zval * lhs, zval * rhs)
{
// First, call the destructor to remove any data structures
// associated with lhs that will now be overwritten
zval_dtor (lhs);
// Overwrite LHS
lhs->value = rhs->value;
lhs->type = rhs->type;
}
// TODO dont overwrite line numbers if we're compiling an extension
static void
phc_setup_error (int init, char *filename, int line_number,
zend_function * function TSRMLS_DC)
{
static int old_in_compilation;
static int old_in_execution;
static char *old_filename;
static int old_lineno;
static zend_function *old_function;
if (init)
{
if (filename == NULL)
filename = "[phc_compiled_file]";
// Save old values
old_in_compilation = CG (in_compilation);
old_in_execution = EG (in_execution);
old_filename = CG (compiled_filename);
old_lineno = CG (zend_lineno);
old_function = EG (function_state_ptr)->function;
// Put in our values
CG (in_compilation) = 1;
EG (in_execution) = 1;
CG (compiled_filename) = filename;
CG (zend_lineno) = line_number;
if (function)
EG (function_state_ptr)->function = function;
}
else
{
CG (in_compilation) = old_in_compilation;
EG (in_execution) = old_in_execution;
CG (compiled_filename) = old_filename;
CG (zend_lineno) = old_lineno;
EG (function_state_ptr)->function = old_function;
}
}
/* Assuming that p_zvp points into a hashtable, we decrease the
* refcount of the currently pointed to object, then clone it, and
* insert it into the hashtable */
// TODO Separation writes into the array, which automatically calls
// the zval_ptr_dtor. However, if the array doesnt have a registered
// destructor, then we shouldnt be calling this.
//
static void
sep_copy_on_write (zval ** p_zvp, int *is_zvp_new)
{
if (!in_copy_on_write (*p_zvp))
return;
zvp_clone (p_zvp, is_zvp_new);
}
/* Write P_RHS into the symbol table as a variable named VAR_NAME */
static void
write_var (zval ** p_lhs, zval ** p_rhs, int *is_rhs_new TSRMLS_DC)
{
if (!(*p_lhs)->is_ref)
{
if ((*p_rhs)->is_ref)
{
zvp_clone (p_rhs, is_rhs_new);
}
(*p_rhs)->refcount++;
zval_ptr_dtor (p_lhs);
*p_lhs = *p_rhs;
}
else
{
overwrite_lhs (*p_lhs, *p_rhs);
}
}
static zval **
get_ht_entry (zval ** p_var, zval * ind TSRMLS_DC)
{
if (Z_TYPE_P (*p_var) == IS_STRING)
{
if (Z_STRLEN_PP (p_var) > 0)
{
php_error_docref (NULL TSRMLS_CC, E_ERROR,
"Cannot create references to/from string offsets nor overloaded objects");
}
else
{
zval_ptr_dtor (p_var);
ALLOC_INIT_ZVAL (*p_var);
array_init (*p_var);
}
}
HashTable *ht = extract_ht (p_var TSRMLS_CC);
zval **data;
if (ht_find (ht, ind, &data) == SUCCESS)
{
assert (data != NULL);
return data;
}
// If we dont find it, put EG (uninitialized_zval_ptr) into the
// hashtable, and return a pointer to its container.
EG (uninitialized_zval_ptr)->refcount++;
ht_update (ht, ind, EG (uninitialized_zval_ptr), &data);
assert (data != NULL);
return data;
}
static zval **
get_st_entry (HashTable * st, char *name, int length, ulong hashval TSRMLS_DC)
{
zval **p_zvp;
if (zend_hash_quick_find
(st, name, length, hashval, (void **) &p_zvp) == SUCCESS)
{
assert (p_zvp != NULL);
return p_zvp;
}
// If we dont find it, put EG (uninitialized_zval_ptr) into the
// hashtable, and return a pointer to its container.
EG (uninitialized_zval_ptr)->refcount++;
int result = zend_hash_quick_add (st, name, length, hashval,
&EG (uninitialized_zval_ptr),
sizeof (zval *), (void **) &p_zvp);
assert (result == SUCCESS);
assert (p_zvp != NULL);
return p_zvp;
}
/* Read the variable named VAR_NAME from the local symbol table and
* return it. If the variable doent exist, a new one is created and
* *IS_NEW is set. */
static zval *
read_var (HashTable * st, char *name, int length, ulong hashval TSRMLS_DC)
{
zval **p_zvp;
if (zend_hash_quick_find
(st, name, length, hashval, (void **) &p_zvp) == SUCCESS)
return *p_zvp;
return EG (uninitialized_zval_ptr);
}
/*
* Lookup variable whose name is var_var in st. We do not call
* ht_find because ht_find uses zend_symtable_find to search for strings
* rather than zend_hash_find. The difference is that zend_symtable_find
* will convert strings to integers where possible: arrays are always
* integer-indexed if at all possible. Variable names however should
* _always_ be treated as strings.
*
* If the index is not found and update_st is set the index gets
* added to the hashtable and a pointer to the new entry is returned;
* *is_new is set to 1.
* Otherwise, the uninitialized zval is returned and is_new is untouched.
*/
zval **
get_var_var (HashTable * st, zval * var_var, int update_st,
int *is_new TSRMLS_DC)
{
zval *string_index;
int index_found, deallocate_string_index = 0;
if (Z_TYPE_P (var_var) == IS_STRING)
{
string_index = var_var;
}
else
{
MAKE_STD_ZVAL (string_index);
string_index->value = var_var->value;
string_index->type = var_var->type;
zval_copy_ctor (string_index);
convert_to_string (string_index);
deallocate_string_index = 1;
}
zval **p_result;
index_found = zend_hash_find (st, Z_STRVAL_P (string_index),
Z_STRLEN_P (string_index) + 1,
(void **) &p_result);
if (index_found != SUCCESS)
{
if (!update_st)
{
p_result = &EG (uninitialized_zval_ptr);
}
else
{
*is_new = 1;
EG (uninitialized_zval_ptr)->refcount++;
zend_hash_update (st, Z_STRVAL_P (string_index),
Z_STRLEN_P (string_index) + 1,
&EG (uninitialized_zval_ptr), sizeof (zval *),
(void **) &p_result);
}
}
if (deallocate_string_index)
zval_ptr_dtor (&string_index);
return p_result;
}
/*
* Read the variable described by var_var from symbol table st
* See comments for get_var_var
*/
zval **
read_var_var (HashTable * st, zval * var_var TSRMLS_DC)
{
return get_var_var (st, var_var, 0, NULL TSRMLS_CC);
}
void
read_array (zval ** result, zval * var, zval * ind,
int *is_result_new TSRMLS_DC)
{
// Memory can be allocated in read_string_index
if (var == EG (uninitialized_zval_ptr))
{
*result = var;
return;
}
if (Z_TYPE_P (var) != IS_ARRAY)
{
if (Z_TYPE_P (var) == IS_STRING)
{
*is_result_new = 1;
*result = read_string_index (var, ind TSRMLS_CC);
return;
}
*result = EG (uninitialized_zval_ptr);
return;
}
// Since we know its an array, and we dont write to it, we dont need
// to separate it.
HashTable *ht = Z_ARRVAL_P (var);
// find the result
zval **p_result;
if (ht_find (ht, ind, &p_result) == SUCCESS)
{
*result = *p_result;
return;
}
*result = EG (uninitialized_zval_ptr);
}
void
read_var_array (HashTable * st, zval ** result, zval * refl,
zval * ind TSRMLS_DC)
{
// TODO add an is_x_new parameter
zval **p_var = read_var_var (st, refl TSRMLS_CC);
read_array (result, *p_var, ind, NULL TSRMLS_CC);
}
/* Push EG (uninitialized_zval_ptr) and return a pointer into the ht
* for it */
static zval **
push_and_index_ht (zval ** p_var TSRMLS_DC)
{
if (Z_TYPE_P (*p_var) == IS_STRING)
{
if (Z_STRLEN_PP (p_var) > 0)
{
php_error_docref (NULL TSRMLS_CC, E_ERROR,
"[] operator not supported for strings");
}
else
{
zval_ptr_dtor (p_var);
ALLOC_INIT_ZVAL (*p_var);
array_init (*p_var);
}
}
if (Z_TYPE_P (*p_var) == IS_BOOL && Z_BVAL_PP (p_var))
{
php_error_docref (NULL TSRMLS_CC, E_WARNING,
"Cannot use a scalar value as an array");
return NULL;
}
// if its not an array, make it an array
HashTable *ht = extract_ht (p_var TSRMLS_CC);
zval **data;
EG (uninitialized_zval_ptr)->refcount++;
int result = zend_hash_next_index_insert (ht, &EG (uninitialized_zval_ptr),
sizeof (zval *), (void **) &data);
assert (result == SUCCESS);
assert (data);
return data;
}
static zval **
fetch_var_arg_by_ref (zval ** p_arg)
{
// We are passing by reference
sep_copy_on_write_ex (p_arg);
// We don't need to restore ->is_ref afterwards,
// because the called function will reduce the
// refcount of arg on return, and will reset is_ref to
// 0 when refcount drops to 1. If the refcount does
// not drop to 1 when the function returns, but we did
// set is_ref to 1 here, that means that is_ref must
// already have been 1 to start with (since if it had
// not, that means that the variable would have been
// in a copy-on-write set, and would have been
// seperated above).
(*p_arg)->is_ref = 1;
return p_arg;
}
/* Dont pass-by-ref */
static zval *
fetch_var_arg (zval * arg, int *is_arg_new)
{
if (arg->is_ref)
{
// We dont separate since we don't own one of ARG's references.
zvp_clone (&arg, is_arg_new);
// It seems we get incorrect refcounts without this.
// TODO This decreases the refcount to zero, which seems wrong,
// but gives the right answer. We should look at how zend does
// this.
arg->refcount--;
}
return arg;
}
static void
cast_var (zval ** p_zvp, int type)
{
assert (type >= 0 && type <= 6);
if ((*p_zvp)->type == type)
return;
sep_copy_on_write_ex (p_zvp);
zval *zvp = *p_zvp;
switch (type)
{
case IS_NULL:
convert_to_null (zvp);
break;
case IS_BOOL:
convert_to_boolean (zvp);
break;
case IS_LONG:
convert_to_long (zvp);
break;
case IS_DOUBLE:
convert_to_double (zvp);
break;
case IS_STRING:
convert_to_string (zvp);
break;
case IS_ARRAY:
convert_to_array (zvp);
break;
case IS_OBJECT:
convert_to_object (zvp);
break;
default:
assert (0); // TODO unimplemented
break;
}
}
/*
* isset
*/
static int
isset_var (HashTable * st, char *name, int length)
{
return zend_hash_exists (st, name, length);
}
static int
isset_array (zval ** p_var, zval * ind TSRMLS_DC)
{
if (Z_TYPE_P (*p_var) == IS_STRING)
{
zvp_clone_ex (&ind);
convert_to_long (ind);
int result = (Z_LVAL_P (ind) >= 0
&& Z_LVAL_P (ind) < Z_STRLEN_PP (p_var));
assert (ind->refcount == 1);
zval_ptr_dtor (&ind);
return result;
}
// NO error required; return false
if (Z_TYPE_P (*p_var) != IS_ARRAY)
return 0;
// if its not an array, make it an array
HashTable *ht = Z_ARRVAL_P (*p_var);
zval **data;
if (ht_find (ht, ind, &data) == SUCCESS)
{
return !ZVAL_IS_NULL (*data);
}
else
return 0;
}
/*
* unset
*/
static void
unset_var (HashTable * st, char *name, int length)
{
zend_hash_del (st, name, length);
}
static void
unset_array (zval ** p_var, zval * ind TSRMLS_DC)
{
if (Z_TYPE_P (*p_var) == IS_STRING)
{
php_error_docref (NULL TSRMLS_CC, E_ERROR,
"Cannot unset string offsets");
}
// NO error required
if (Z_TYPE_P (*p_var) != IS_ARRAY)
return;
// if its not an array, make it an array
HashTable *ht = Z_ARRVAL_P (*p_var);
ht_delete (ht, ind);
}
/* Copies a constant into ZVP. Note that LENGTH does not include the NULL-terminating byte. */
static void
get_constant (char *name, int length, zval ** p_zvp TSRMLS_DC)
{
MAKE_STD_ZVAL (*p_zvp);
// zend_get_constant returns 1 for success, not SUCCESS
int result = zend_get_constant (name, length, *p_zvp TSRMLS_CC);
if (result == 0)
ZVAL_STRINGL (*p_zvp, name, length, 1);
}
/* If assertions are off, this should be inlined to nothing */
static void
phc_check_invariants (TSRMLS_D)
{
assert (EG (uninitialized_zval_ptr) == &EG (uninitialized_zval));
assert (EG (uninitialized_zval).refcount >= 1);
assert (EG (uninitialized_zval).value.lval == 0);
assert (EG (uninitialized_zval).type == IS_NULL);
assert (EG (uninitialized_zval).is_ref == 0);
}
static void
initialize_function_call (zend_fcall_info * fci, zend_fcall_info_cache * fcic,
char *function_name, char *filename,
int line_number TSRMLS_DC)
{
if (!fcic->initialized) // check for missing function
{
zval fn;
INIT_PZVAL (&fn);
ZVAL_STRING (&fn, function_name, 0);
int result = zend_fcall_info_init (&fn, fci, fcic TSRMLS_CC);
if (result != SUCCESS)
{
phc_setup_error (1, filename, line_number, NULL TSRMLS_CC);
php_error_docref (NULL TSRMLS_CC, E_ERROR,
"Call to undefined function %s()", function_name);
}
}
}
static void
phc_builtin_eval (zval * arg, zval * result, char *filename TSRMLS_DC)
{
// If the user wrote "return ..", we need to store the
// return value; however, in that case, zend_eval_string
// will slap an extra "return" onto the front of the string,
// so we must remove the "return" from the string the user
// wrote. If the user did not write "return", he is not
// interested in the return value, and we must pass NULL
// instead or rhs to avoid zend_eval_string adding "return".
// convert to a string
// TODO avoid allocation
zval *copy = arg;
zvp_clone_ex (©);