blob: 9b4a8c6c307266a78a35f52ef4ef0afe5b6af6fe [file] [log] [blame]
// Copyright 2011 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// A simple interpreter for the Irregexp byte code.
#include "src/regexp/regexp.h"
namespace v8 {
namespace internal {
class V8_EXPORT_PRIVATE IrregexpInterpreter : public AllStatic {
enum Result {
FAILURE = RegExp::kInternalRegExpFailure,
SUCCESS = RegExp::kInternalRegExpSuccess,
EXCEPTION = RegExp::kInternalRegExpException,
RETRY = RegExp::kInternalRegExpRetry,
FALLBACK_TO_EXPERIMENTAL = RegExp::kInternalRegExpFallbackToExperimental,
// In case a StackOverflow occurs, a StackOverflowException is created and
// EXCEPTION is returned.
static Result MatchForCallFromRuntime(
Isolate* isolate, Handle<JSRegExp> regexp, Handle<String> subject_string,
int* output_registers, int output_register_count, int start_position);
// In case a StackOverflow occurs, EXCEPTION is returned. The caller is
// responsible for creating the exception.
// RETRY is returned if a retry through the runtime is needed (e.g. when
// interrupts have been scheduled or the regexp is marked for tier-up).
// Arguments input_start, input_end and backtrack_stack are
// unused. They are only passed to match the signature of the native irregex
// code.
// Arguments output_registers and output_register_count describe the results
// array, which will contain register values of all captures if SUCCESS is
// returned. For all other return codes, the results array remains unmodified.
static Result MatchForCallFromJs(Address subject, int32_t start_position,
Address input_start, Address input_end,
int* output_registers,
int32_t output_register_count,
Address backtrack_stack,
RegExp::CallOrigin call_origin,
Isolate* isolate, Address regexp);
static Result MatchInternal(Isolate* isolate, ByteArray code_array,
String subject_string, int* output_registers,
int output_register_count,
int total_register_count, int start_position,
RegExp::CallOrigin call_origin,
uint32_t backtrack_limit);
static Result Match(Isolate* isolate, JSRegExp regexp, String subject_string,
int* output_registers, int output_register_count,
int start_position, RegExp::CallOrigin call_origin);
} // namespace internal
} // namespace v8