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// Copyright 2017 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.
#ifndef V8_OBJECTS_TEMPLATE_OBJECTS_H_
#define V8_OBJECTS_TEMPLATE_OBJECTS_H_
#include "src/objects.h"
#include "src/objects/hash-table.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
// TemplateObjectDescription is a triple of hash, raw strings and cooked
// strings for tagged template literals. Used to communicate with the runtime
// for template object creation within the {Runtime_GetTemplateObject} method.
class TemplateObjectDescription final : public Tuple3 {
public:
DECL_INT_ACCESSORS(hash)
DECL_ACCESSORS(raw_strings, FixedArray)
DECL_ACCESSORS(cooked_strings, FixedArray)
bool Equals(TemplateObjectDescription const* that) const;
static Handle<JSArray> GetTemplateObject(
Handle<TemplateObjectDescription> description,
Handle<Context> native_context);
DECL_CAST(TemplateObjectDescription)
static constexpr int kHashOffset = kValue1Offset;
static constexpr int kRawStringsOffset = kValue2Offset;
static constexpr int kCookedStringsOffset = kValue3Offset;
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(TemplateObjectDescription);
};
class TemplateMapShape final : public BaseShape<TemplateObjectDescription*> {
public:
static bool IsMatch(TemplateObjectDescription* key, Object* value);
static uint32_t Hash(Isolate* isolate, TemplateObjectDescription* key);
static uint32_t HashForObject(Isolate* isolate, Object* object);
static constexpr int kPrefixSize = 0;
static constexpr int kEntrySize = 2;
};
class TemplateMap final : public HashTable<TemplateMap, TemplateMapShape> {
public:
static Handle<TemplateMap> New(Isolate* isolate);
// Tries to lookup the given {key} in the {template_map}. Returns the
// value if it's found, otherwise returns an empty MaybeHandle.
WARN_UNUSED_RESULT static MaybeHandle<JSArray> Lookup(
Handle<TemplateMap> template_map, Handle<TemplateObjectDescription> key);
// Adds the {key} / {value} pair to the {template_map} and returns the
// new TemplateMap (we might need to re-allocate). This assumes that
// there's no entry for {key} in the {template_map} already.
static Handle<TemplateMap> Add(Handle<TemplateMap> template_map,
Handle<TemplateObjectDescription> key,
Handle<JSArray> value);
DECL_CAST(TemplateMap)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(TemplateMap);
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_TEMPLATE_OBJECTS_H_
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