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internal.h
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internal.h
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#ifndef ANT_INTERNAL_H
#define ANT_INTERNAL_H
#include "ant.h"
#include "slab.h"
struct for_let_ctx {
const char *var_name; // interned variable name
jsoff_t var_len; // length of var name
jsoff_t prop_off; // offset of var property in loop scope
jsval_t body_scope; // loop body scope for capturing block-scoped vars
};
struct js {
const char *code; // currently parsed code snippet
char *errmsg; // dynamic error message buffer
size_t errmsg_size; // size of error message buffer
const char *filename; // current filename for error reporting
uint8_t tok; // last parsed token value
uint8_t consumed; // indicator that last parsed token was consumed
uint8_t flags; // execution flags, see F_* constants below
#define F_NOEXEC 1U // parse code, but not execute
#define F_LOOP 2U // we are inside the loop
#define F_CALL 4U // we are inside a function call
#define F_BREAK 8U // exit the loop
#define F_RETURN 16U // return has been executed
#define F_THROW 32U // throw has been executed
#define F_SWITCH 64U // we are inside a switch statement
#define F_STRICT 128U // strict mode is enabled
jsoff_t clen; // code snippet length
jsoff_t pos; // current parsing position
jsoff_t toff; // offset of the last parsed token
jsoff_t tlen; // length of the last parsed token
jsval_t tval; // holds last parsed numeric or string literal value
jsval_t scope; // current scope
jsval_t global; // global object (root scope)
jsval_t this_val; // 'this' value for currently executing function
jsval_t super_val; // 'super' value for class methods
jsval_t new_target; // constructor called with 'new', undefined otherwise
jsval_t module_ns; // current ESM module namespace
uint8_t *mem; // available JS memory
jsoff_t size; // memory size
jsoff_t brk; // current mem usage boundary
void *cstk; // C stack pointer at the beginning of js_eval()
size_t stack_limit; // max stack bytes allowed (0 = no limit)
jsval_t current_func; // currently executing function (for native closures)
bool var_warning_shown; // flag to show var deprecation warning only once
bool owns_mem; // true if js owns the memory buffer (dynamic allocation)
jsoff_t max_size; // maximum allowed memory size (for dynamic growth)
bool had_newline; // true if newline was crossed before current token
jsval_t thrown_value; // stores the actual thrown value for catch blocks
bool is_hoisting; // true during function declaration hoisting pass
uint64_t sym_counter; // counter for generating unique symbol IDs
bool needs_gc; // deferred GC flag, checked at statement boundaries
bool gc_suppress; // suppress GC during microtask batch processing
int eval_depth; // recursion depth of js_eval calls
int parse_depth; // recursion depth of parser (for stack overflow protection)
bool skip_func_hoist; // skip function declaration hoisting (pre-computed)
bool fatal_error; // fatal error that should bypass promise rejection handling
// for-let loop context stack
struct for_let_ctx *for_let_stack;
int for_let_stack_len;
int for_let_stack_cap;
};
enum {
T_OBJ, T_PROP, T_STR, T_UNDEF, T_NULL, T_NUM, T_BOOL, T_FUNC,
T_CODEREF, T_CFUNC, T_ERR, T_ARR, T_PROMISE, T_TYPEDARRAY,
T_BIGINT, T_PROPREF, T_SYMBOL, T_GENERATOR, T_FFI
};
#define JS_HASH_SIZE 512
#define JS_MAX_PARSE_DEPTH (1024 * 2)
#define JS_ERR_NO_STACK (1 << 8)
#define NANBOX_PREFIX 0x7FC0000000000000ULL
#define NANBOX_PREFIX_CHK 0x3FEULL
#define NANBOX_TYPE_SHIFT 48
#define NANBOX_TYPE_MASK 0x1F
#define NANBOX_DATA_MASK 0x0000FFFFFFFFFFFFULL
#define TYPE_FLAG(t) (1u << (t))
#define T_NEEDS_PROTO_FALLBACK (TYPE_FLAG(T_FUNC) | TYPE_FLAG(T_ARR) | TYPE_FLAG(T_PROMISE))
#define T_NON_NUMERIC_MASK (TYPE_FLAG(T_STR) | TYPE_FLAG(T_ARR) | TYPE_FLAG(T_FUNC) | TYPE_FLAG(T_CFUNC) | TYPE_FLAG(T_OBJ))
jsoff_t esize(jsoff_t w);
void js_gc_reserve_roots(GC_UPDATE_ARGS);
void js_gc_update_roots(GC_UPDATE_ARGS);
bool js_has_pending_coroutines(void);
bool is_internal_prop(const char *key, jsoff_t klen);
slab_state_t *js_get_slab_state(void);
#define is_non_numeric(v) ((1u << vtype(v)) & T_NON_NUMERIC_MASK)
#endif

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