| /* |
| * Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| * for details. All rights reserved. Use of this source code is governed by a |
| * BSD-style license that can be found in the LICENSE file. |
| */ |
| |
| #ifndef RUNTIME_INCLUDE_DART_API_H_ |
| #define RUNTIME_INCLUDE_DART_API_H_ |
| |
| /** \mainpage Dart Embedding API Reference |
| * |
| * Dart is a class-based programming language for creating structured |
| * web applications. This reference describes the Dart embedding api, |
| * which is used to embed the Dart Virtual Machine within an |
| * application. |
| * |
| * This reference is generated from the header include/dart_api.h. |
| */ |
| |
| #ifdef __cplusplus |
| #define DART_EXTERN_C extern "C" |
| #else |
| #define DART_EXTERN_C |
| #endif |
| |
| #if defined(__CYGWIN__) |
| #error Tool chain and platform not supported. |
| #elif defined(_WIN32) |
| // Define bool if necessary. |
| #ifndef __cplusplus |
| typedef unsigned __int8 bool; |
| #endif |
| // Define integer types. |
| typedef signed __int8 int8_t; |
| typedef signed __int16 int16_t; |
| typedef signed __int32 int32_t; |
| typedef signed __int64 int64_t; |
| typedef unsigned __int8 uint8_t; |
| typedef unsigned __int16 uint16_t; |
| typedef unsigned __int32 uint32_t; |
| typedef unsigned __int64 uint64_t; |
| #if defined(DART_SHARED_LIB) |
| #define DART_EXPORT DART_EXTERN_C __declspec(dllexport) |
| #else |
| #define DART_EXPORT DART_EXTERN_C |
| #endif |
| #else |
| /* __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to |
| * enable platform independent printf format specifiers. */ |
| #ifndef __STDC_FORMAT_MACROS |
| #define __STDC_FORMAT_MACROS |
| #endif |
| #include <inttypes.h> |
| #include <stdbool.h> |
| #if __GNUC__ >= 4 |
| #if defined(DART_SHARED_LIB) |
| #define DART_EXPORT \ |
| DART_EXTERN_C __attribute__((visibility("default"))) __attribute((used)) |
| #else |
| #define DART_EXPORT DART_EXTERN_C |
| #endif |
| #else |
| #error Tool chain not supported. |
| #endif |
| #endif |
| |
| #include <assert.h> |
| |
| /* |
| * ======= |
| * Handles |
| * ======= |
| */ |
| |
| /** |
| * An isolate is the unit of concurrency in Dart. Each isolate has |
| * its own memory and thread of control. No state is shared between |
| * isolates. Instead, isolates communicate by message passing. |
| * |
| * Each thread keeps track of its current isolate, which is the |
| * isolate which is ready to execute on the current thread. The |
| * current isolate may be NULL, in which case no isolate is ready to |
| * execute. Most of the Dart apis require there to be a current |
| * isolate in order to function without error. The current isolate is |
| * set by any call to Dart_CreateIsolate or Dart_EnterIsolate. |
| */ |
| typedef struct _Dart_Isolate* Dart_Isolate; |
| |
| /** |
| * An object reference managed by the Dart VM garbage collector. |
| * |
| * Because the garbage collector may move objects, it is unsafe to |
| * refer to objects directly. Instead, we refer to objects through |
| * handles, which are known to the garbage collector and updated |
| * automatically when the object is moved. Handles should be passed |
| * by value (except in cases like out-parameters) and should never be |
| * allocated on the heap. |
| * |
| * Most functions in the Dart Embedding API return a handle. When a |
| * function completes normally, this will be a valid handle to an |
| * object in the Dart VM heap. This handle may represent the result of |
| * the operation or it may be a special valid handle used merely to |
| * indicate successful completion. Note that a valid handle may in |
| * some cases refer to the null object. |
| * |
| * --- Error handles --- |
| * |
| * When a function encounters a problem that prevents it from |
| * completing normally, it returns an error handle (See Dart_IsError). |
| * An error handle has an associated error message that gives more |
| * details about the problem (See Dart_GetError). |
| * |
| * There are four kinds of error handles that can be produced, |
| * depending on what goes wrong: |
| * |
| * - Api error handles are produced when an api function is misused. |
| * This happens when a Dart embedding api function is called with |
| * invalid arguments or in an invalid context. |
| * |
| * - Unhandled exception error handles are produced when, during the |
| * execution of Dart code, an exception is thrown but not caught. |
| * Prototypically this would occur during a call to Dart_Invoke, but |
| * it can occur in any function which triggers the execution of Dart |
| * code (for example, Dart_ToString). |
| * |
| * An unhandled exception error provides access to an exception and |
| * stacktrace via the functions Dart_ErrorGetException and |
| * Dart_ErrorGetStacktrace. |
| * |
| * - Compilation error handles are produced when, during the execution |
| * of Dart code, a compile-time error occurs. As above, this can |
| * occur in any function which triggers the execution of Dart code. |
| * |
| * - Fatal error handles are produced when the system wants to shut |
| * down the current isolate. Sometimes a fatal error may be a |
| * restart request (see Dart_IsRestartRequest). If the embedder does |
| * not support restarting the VM, then this should be treated as a |
| * normal fatal error. |
| * |
| * --- Propagating errors --- |
| * |
| * When an error handle is returned from the top level invocation of |
| * Dart code in a program, the embedder must handle the error as they |
| * see fit. Often, the embedder will print the error message produced |
| * by Dart_Error and exit the program. |
| * |
| * When an error is returned while in the body of a native function, |
| * it can be propagated up the call stack by calling |
| * Dart_PropagateError, Dart_SetReturnValue, or Dart_ThrowException. |
| * Errors should be propagated unless there is a specific reason not |
| * to. If an error is not propagated then it is ignored. For |
| * example, if an unhandled exception error is ignored, that |
| * effectively "catches" the unhandled exception. Fatal errors must |
| * always be propagated. |
| * |
| * When an error is propagated, any current scopes created by |
| * Dart_EnterScope will be exited. |
| * |
| * Using Dart_SetReturnValue to propagate an exception is somewhat |
| * more convenient than using Dart_PropagateError, and should be |
| * preferred for reasons discussed below. |
| * |
| * Dart_PropagateError and Dart_ThrowException do not return. Instead |
| * they transfer control non-locally using a setjmp-like mechanism. |
| * This can be inconvenient if you have resources that you need to |
| * clean up before propagating the error. |
| * |
| * When relying on Dart_PropagateError, we often return error handles |
| * rather than propagating them from helper functions. Consider the |
| * following contrived example: |
| * |
| * 1 Dart_Handle isLongStringHelper(Dart_Handle arg) { |
| * 2 intptr_t* length = 0; |
| * 3 result = Dart_StringLength(arg, &length); |
| * 4 if (Dart_IsError(result)) { |
| * 5 return result |
| * 6 } |
| * 7 return Dart_NewBoolean(length > 100); |
| * 8 } |
| * 9 |
| * 10 void NativeFunction_isLongString(Dart_NativeArguments args) { |
| * 11 Dart_EnterScope(); |
| * 12 AllocateMyResource(); |
| * 13 Dart_Handle arg = Dart_GetNativeArgument(args, 0); |
| * 14 Dart_Handle result = isLongStringHelper(arg); |
| * 15 if (Dart_IsError(result)) { |
| * 16 FreeMyResource(); |
| * 17 Dart_PropagateError(result); |
| * 18 abort(); // will not reach here |
| * 19 } |
| * 20 Dart_SetReturnValue(result); |
| * 21 FreeMyResource(); |
| * 22 Dart_ExitScope(); |
| * 23 } |
| * |
| * In this example, we have a native function which calls a helper |
| * function to do its work. On line 5, the helper function could call |
| * Dart_PropagateError, but that would not give the native function a |
| * chance to call FreeMyResource(), causing a leak. Instead, the |
| * helper function returns the error handle to the caller, giving the |
| * caller a chance to clean up before propagating the error handle. |
| * |
| * When an error is propagated by calling Dart_SetReturnValue, the |
| * native function will be allowed to complete normally and then the |
| * exception will be propagated only once the native call |
| * returns. This can be convenient, as it allows the C code to clean |
| * up normally. |
| * |
| * The example can be written more simply using Dart_SetReturnValue to |
| * propagate the error. |
| * |
| * 1 Dart_Handle isLongStringHelper(Dart_Handle arg) { |
| * 2 intptr_t* length = 0; |
| * 3 result = Dart_StringLength(arg, &length); |
| * 4 if (Dart_IsError(result)) { |
| * 5 return result |
| * 6 } |
| * 7 return Dart_NewBoolean(length > 100); |
| * 8 } |
| * 9 |
| * 10 void NativeFunction_isLongString(Dart_NativeArguments args) { |
| * 11 Dart_EnterScope(); |
| * 12 AllocateMyResource(); |
| * 13 Dart_Handle arg = Dart_GetNativeArgument(args, 0); |
| * 14 Dart_SetReturnValue(isLongStringHelper(arg)); |
| * 15 FreeMyResource(); |
| * 16 Dart_ExitScope(); |
| * 17 } |
| * |
| * In this example, the call to Dart_SetReturnValue on line 14 will |
| * either return the normal return value or the error (potentially |
| * generated on line 3). The call to FreeMyResource on line 15 will |
| * execute in either case. |
| * |
| * --- Local and persistent handles --- |
| * |
| * Local handles are allocated within the current scope (see |
| * Dart_EnterScope) and go away when the current scope exits. Unless |
| * otherwise indicated, callers should assume that all functions in |
| * the Dart embedding api return local handles. |
| * |
| * Persistent handles are allocated within the current isolate. They |
| * can be used to store objects across scopes. Persistent handles have |
| * the lifetime of the current isolate unless they are explicitly |
| * deallocated (see Dart_DeletePersistentHandle). |
| * The type Dart_Handle represents a handle (both local and persistent). |
| * The type Dart_PersistentHandle is a Dart_Handle and it is used to |
| * document that a persistent handle is expected as a parameter to a call |
| * or the return value from a call is a persistent handle. |
| */ |
| typedef struct _Dart_Handle* Dart_Handle; |
| typedef Dart_Handle Dart_PersistentHandle; |
| typedef struct _Dart_WeakPersistentHandle* Dart_WeakPersistentHandle; |
| |
| typedef void (*Dart_WeakPersistentHandleFinalizer)( |
| void* isolate_callback_data, |
| Dart_WeakPersistentHandle handle, |
| void* peer); |
| typedef void (*Dart_PeerFinalizer)(void* peer); |
| |
| /** |
| * Is this an error handle? |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT bool Dart_IsError(Dart_Handle handle); |
| |
| /** |
| * Is this an api error handle? |
| * |
| * Api error handles are produced when an api function is misused. |
| * This happens when a Dart embedding api function is called with |
| * invalid arguments or in an invalid context. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT bool Dart_IsApiError(Dart_Handle handle); |
| |
| /** |
| * Is this an unhandled exception error handle? |
| * |
| * Unhandled exception error handles are produced when, during the |
| * execution of Dart code, an exception is thrown but not caught. |
| * This can occur in any function which triggers the execution of Dart |
| * code. |
| * |
| * See Dart_ErrorGetException and Dart_ErrorGetStacktrace. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT bool Dart_IsUnhandledExceptionError(Dart_Handle handle); |
| |
| /** |
| * Is this a compilation error handle? |
| * |
| * Compilation error handles are produced when, during the execution |
| * of Dart code, a compile-time error occurs. This can occur in any |
| * function which triggers the execution of Dart code. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT bool Dart_IsCompilationError(Dart_Handle handle); |
| |
| /** |
| * Is this a fatal error handle? |
| * |
| * Fatal error handles are produced when the system wants to shut down |
| * the current isolate. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT bool Dart_IsFatalError(Dart_Handle handle); |
| |
| /** |
| * Is this error a request to restart the VM? |
| * |
| * If an embedder chooses to support restarting the VM from tools |
| * (such as a debugger), then this function is used to distinguish |
| * restart requests from other fatal errors. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT bool Dart_IsVMRestartRequest(Dart_Handle handle); |
| |
| /** |
| * Gets the error message from an error handle. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \return A C string containing an error message if the handle is |
| * error. An empty C string ("") if the handle is valid. This C |
| * String is scope allocated and is only valid until the next call |
| * to Dart_ExitScope. |
| */ |
| DART_EXPORT const char* Dart_GetError(Dart_Handle handle); |
| |
| /** |
| * Is this an error handle for an unhandled exception? |
| */ |
| DART_EXPORT bool Dart_ErrorHasException(Dart_Handle handle); |
| |
| /** |
| * Gets the exception Object from an unhandled exception error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_ErrorGetException(Dart_Handle handle); |
| |
| /** |
| * Gets the stack trace Object from an unhandled exception error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_ErrorGetStacktrace(Dart_Handle handle); |
| |
| /** |
| * Produces an api error handle with the provided error message. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param error the error message. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewApiError(const char* error); |
| |
| /** |
| * Produces a new unhandled exception error handle. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param exception An instance of a Dart object to be thrown or |
| * an ApiError or CompilationError handle. |
| * When an ApiError or CompilationError handle is passed in |
| * a string object of the error message is created and it becomes |
| * the Dart object to be thrown. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewUnhandledExceptionError(Dart_Handle exception); |
| |
| /** |
| * Propagates an error. |
| * |
| * If the provided handle is an unhandled exception error, this |
| * function will cause the unhandled exception to be rethrown. This |
| * will proceed in the standard way, walking up Dart frames until an |
| * appropriate 'catch' block is found, executing 'finally' blocks, |
| * etc. |
| * |
| * If the error is not an unhandled exception error, we will unwind |
| * the stack to the next C frame. Intervening Dart frames will be |
| * discarded; specifically, 'finally' blocks will not execute. This |
| * is the standard way that compilation errors (and the like) are |
| * handled by the Dart runtime. |
| * |
| * In either case, when an error is propagated any current scopes |
| * created by Dart_EnterScope will be exited. |
| * |
| * See the additional discussion under "Propagating Errors" at the |
| * beginning of this file. |
| * |
| * \param An error handle (See Dart_IsError) |
| * |
| * \return On success, this function does not return. On failure, an |
| * error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_PropagateError(Dart_Handle handle); |
| /* TODO(turnidge): Should this really return an error handle? */ |
| /* Consider just terminating. */ |
| |
| /* Internal routine used for reporting error handles. */ |
| DART_EXPORT void _Dart_ReportErrorHandle(const char* file, |
| int line, |
| const char* handle_string, |
| const char* error); |
| |
| /* TODO(turnidge): Move DART_CHECK_VALID to some sort of dart_utils |
| * header instead of this header. */ |
| /** |
| * Aborts the process if 'handle' is an error handle. |
| * |
| * Provided for convenience. |
| */ |
| #define DART_CHECK_VALID(handle) \ |
| { \ |
| Dart_Handle __handle = handle; \ |
| if (Dart_IsError((__handle))) { \ |
| _Dart_ReportErrorHandle(__FILE__, __LINE__, #handle, \ |
| Dart_GetError(__handle)); \ |
| } \ |
| } |
| |
| /** |
| * Converts an object to a string. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \return The converted string if no error occurs during |
| * the conversion. If an error does occur, an error handle is |
| * returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_ToString(Dart_Handle object); |
| |
| /** |
| * Checks to see if two handles refer to identically equal objects. |
| * |
| * If both handles refer to instances, this is equivalent to using the top-level |
| * function identical() from dart:core. Otherwise, returns whether the two |
| * argument handles refer to the same object. |
| * |
| * \param obj1 An object to be compared. |
| * \param obj2 An object to be compared. |
| * |
| * \return True if the objects are identically equal. False otherwise. |
| */ |
| DART_EXPORT bool Dart_IdentityEquals(Dart_Handle obj1, Dart_Handle obj2); |
| |
| /** |
| * Returns a hash code for the argument. The hash code of objects that are equal |
| * according to Dart_IdentityEquals will return the same hash code, but the hash |
| * codes of non-equal objects are not necessarily distinct. |
| * |
| * \param obj An object for which to derive a hash code. |
| * |
| * \return A hash code for the parameter. |
| */ |
| DART_EXPORT uint64_t Dart_IdentityHash(Dart_Handle obj); |
| |
| /** |
| * Allocates a handle in the current scope from a persistent handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_HandleFromPersistent(Dart_PersistentHandle object); |
| |
| /** |
| * Allocates a handle in the current scope from a weak persistent handle. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_HandleFromWeakPersistent(Dart_WeakPersistentHandle object); |
| |
| /** |
| * Allocates a persistent handle for an object. |
| * |
| * This handle has the lifetime of the current isolate unless it is |
| * explicitly deallocated by calling Dart_DeletePersistentHandle. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT Dart_PersistentHandle Dart_NewPersistentHandle(Dart_Handle object); |
| |
| /** |
| * Assign value of local handle to a persistent handle. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param obj1 A persistent handle whose value needs to be set. |
| * \param obj2 An object whose value needs to be set to the persistent handle. |
| * |
| * \return Success if the persistent handle was set |
| * Otherwise, returns an error. |
| */ |
| DART_EXPORT void Dart_SetPersistentHandle(Dart_PersistentHandle obj1, |
| Dart_Handle obj2); |
| |
| /** |
| * Deallocates a persistent handle. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT void Dart_DeletePersistentHandle(Dart_PersistentHandle object); |
| |
| /** |
| * Allocates a weak persistent handle for an object. |
| * |
| * This handle has the lifetime of the current isolate unless the object |
| * pointed to by the handle is garbage collected, in this case the VM |
| * automatically deletes the handle after invoking the callback associated |
| * with the handle. The handle can also be explicitly deallocated by |
| * calling Dart_DeleteWeakPersistentHandle. |
| * |
| * If the object becomes unreachable the callback is invoked with the weak |
| * persistent handle and the peer as arguments. This gives the native code the |
| * ability to cleanup data associated with the object and clear out any cached |
| * references to the handle. All references to this handle after the callback |
| * will be invalid. It is illegal to call into the VM from the callback. |
| * If the handle is deleted before the object becomes unreachable, |
| * the callback is never invoked. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param object An object. |
| * \param peer A pointer to a native object or NULL. This value is |
| * provided to callback when it is invoked. |
| * \param external_allocation_size The number of externally allocated |
| * bytes for peer. Used to inform the garbage collector. |
| * \param callback A function pointer that will be invoked sometime |
| * after the object is garbage collected, unless the handle has been deleted. |
| * A valid callback needs to be specified it cannot be NULL. |
| * |
| * \return The weak persistent handle or NULL. NULL is returned in case of bad |
| * parameters. |
| */ |
| DART_EXPORT Dart_WeakPersistentHandle |
| Dart_NewWeakPersistentHandle(Dart_Handle object, |
| void* peer, |
| intptr_t external_allocation_size, |
| Dart_WeakPersistentHandleFinalizer callback); |
| |
| DART_EXPORT void Dart_DeleteWeakPersistentHandle( |
| Dart_Isolate isolate, |
| Dart_WeakPersistentHandle object); |
| |
| |
| /* |
| * ============================ |
| * Garbage Collection Callbacks |
| * ============================ |
| */ |
| |
| /** |
| * Callbacks signal the beginning and end of a garbage collection. |
| * |
| * These signals are intended to be used by the embedder to manage the |
| * lifetime of native objects with a managed object peer. |
| */ |
| |
| /** |
| * A callback invoked at the beginning of a garbage collection. |
| */ |
| typedef void (*Dart_GcPrologueCallback)(); |
| |
| /** |
| * A callback invoked at the end of a garbage collection. |
| */ |
| typedef void (*Dart_GcEpilogueCallback)(); |
| |
| /** |
| * Adds garbage collection callbacks (prologue and epilogue). |
| * |
| * \param prologue_callback A function pointer to a prologue callback function. |
| * A prologue callback function should not be already set when this function |
| * is called. A NULL value removes the existing prologue callback function |
| * if any. |
| * |
| * \param epilogue_callback A function pointer to an epilogue callback function. |
| * An epilogue callback function should not be already set when this function |
| * is called. A NULL value removes the existing epilogue callback function |
| * if any. |
| * |
| * \return Success if the callbacks were added. Otherwise, returns an |
| * error handle. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_SetGcCallbacks(Dart_GcPrologueCallback prologue_callback, |
| Dart_GcEpilogueCallback epilogue_callback); |
| |
| |
| /* |
| * ========================== |
| * Initialization and Globals |
| * ========================== |
| */ |
| |
| /** |
| * Gets the version string for the Dart VM. |
| * |
| * The version of the Dart VM can be accessed without initializing the VM. |
| * |
| * \return The version string for the embedded Dart VM. |
| */ |
| DART_EXPORT const char* Dart_VersionString(); |
| |
| |
| /** |
| * Isolate specific flags are set when creating a new isolate using the |
| * Dart_IsolateFlags structure. |
| * |
| * Current version of flags is encoded in a 32-bit integer with 16 bits used |
| * for each part. |
| */ |
| |
| #define DART_FLAGS_CURRENT_VERSION (0x00000001) |
| |
| typedef struct { |
| int32_t version; |
| bool enable_type_checks; |
| bool enable_asserts; |
| bool enable_error_on_bad_type; |
| bool enable_error_on_bad_override; |
| } Dart_IsolateFlags; |
| |
| /** |
| * An isolate creation and initialization callback function. |
| * |
| * This callback, provided by the embedder, is called when the vm |
| * needs to create an isolate. The callback should create an isolate |
| * by calling Dart_CreateIsolate and load any scripts required for |
| * execution. |
| * |
| * When the function returns false, it is the responsibility of this |
| * function to ensure that Dart_ShutdownIsolate has been called if |
| * required (for example, if the isolate was created successfully by |
| * Dart_CreateIsolate() but the root library fails to load |
| * successfully, then the function should call Dart_ShutdownIsolate |
| * before returning). |
| * |
| * When the function returns false, the function should set *error to |
| * a malloc-allocated buffer containing a useful error message. The |
| * caller of this function (the vm) will make sure that the buffer is |
| * freed. |
| * |
| * \param script_uri The uri of the script to load. |
| * This uri is non NULL if the isolate is being created using the |
| * spawnUri isolate API. This uri has been canonicalized by the |
| * library tag handler from the parent isolate. |
| * The callback is responsible for loading this script by a call to |
| * Dart_LoadScript or Dart_LoadScriptFromSnapshot. |
| * This uri will be NULL if the isolate is being created using the |
| * spawnFunction isolate API. |
| * The callback is responsible for loading the script used in the |
| * parent isolate by a call to Dart_LoadScript or |
| * Dart_LoadScriptFromSnapshot. |
| * \param main The name of the main entry point this isolate will |
| * eventually run. This is provided for advisory purposes only to |
| * improve debugging messages. The main function is not invoked by |
| * this function. |
| * \param package_root The package root path for this isolate to resolve |
| * package imports against. Only one of package_root and package_map |
| * parameters is non-NULL. If neither parameter is passed the package |
| * resolution of the parent isolate should be used. |
| * \param package_map The package map for this isolate to resolve package |
| * imports against. The array contains alternating keys and values, |
| * terminated by a NULL key. Only one of package_root and package_map |
| * parameters is non-NULL. If neither parameter is passed the package |
| * resolution of the parent isolate should be used. |
| * \param flags Default flags for this isolate being spawned. Either inherited |
| * from the spawning isolate or passed as parameters when spawning the |
| * isolate from Dart code. |
| * \param callback_data The callback data which was passed to the |
| * parent isolate when it was created by calling Dart_CreateIsolate(). |
| * \param error A structure into which the embedder can place a |
| * C string containing an error message in the case of failures. |
| * |
| * \return The embedder returns NULL if the creation and |
| * initialization was not successful and the isolate if successful. |
| */ |
| typedef Dart_Isolate (*Dart_IsolateCreateCallback)(const char* script_uri, |
| const char* main, |
| const char* package_root, |
| const char* package_config, |
| Dart_IsolateFlags* flags, |
| void* callback_data, |
| char** error); |
| |
| /** |
| * An isolate unhandled exception callback function. |
| * |
| * This callback has been DEPRECATED. |
| */ |
| typedef void (*Dart_IsolateUnhandledExceptionCallback)(Dart_Handle error); |
| |
| /** |
| * An isolate shutdown callback function. |
| * |
| * This callback, provided by the embedder, is called before the vm |
| * shuts down an isolate. The isolate being shutdown will be the current |
| * isolate. It is safe to run Dart code. |
| * |
| * This function should be used to dispose of native resources that |
| * are allocated to an isolate in order to avoid leaks. |
| * |
| * \param callback_data The same callback data which was passed to the |
| * isolate when it was created. |
| * |
| */ |
| typedef void (*Dart_IsolateShutdownCallback)(void* callback_data); |
| |
| /** |
| * A thread death callback function. |
| * This callback, provided by the embedder, is called before a thread in the |
| * vm thread pool exits. |
| * This function could be used to dispose of native resources that |
| * are associated and attached to the thread, in order to avoid leaks. |
| */ |
| typedef void (*Dart_ThreadExitCallback)(); |
| |
| /** |
| * Callbacks provided by the embedder for file operations. If the |
| * embedder does not allow file operations these callbacks can be |
| * NULL. |
| * |
| * Dart_FileOpenCallback - opens a file for reading or writing. |
| * \param name The name of the file to open. |
| * \param write A boolean variable which indicates if the file is to |
| * opened for writing. If there is an existing file it needs to truncated. |
| * |
| * Dart_FileReadCallback - Read contents of file. |
| * \param data Buffer allocated in the callback into which the contents |
| * of the file are read into. It is the responsibility of the caller to |
| * free this buffer. |
| * \param file_length A variable into which the length of the file is returned. |
| * In the case of an error this value would be -1. |
| * \param stream Handle to the opened file. |
| * |
| * Dart_FileWriteCallback - Write data into file. |
| * \param data Buffer which needs to be written into the file. |
| * \param length Length of the buffer. |
| * \param stream Handle to the opened file. |
| * |
| * Dart_FileCloseCallback - Closes the opened file. |
| * \param stream Handle to the opened file. |
| * |
| */ |
| typedef void* (*Dart_FileOpenCallback)(const char* name, bool write); |
| |
| typedef void (*Dart_FileReadCallback)(const uint8_t** data, |
| intptr_t* file_length, |
| void* stream); |
| |
| typedef void (*Dart_FileWriteCallback)(const void* data, |
| intptr_t length, |
| void* stream); |
| |
| typedef void (*Dart_FileCloseCallback)(void* stream); |
| |
| typedef bool (*Dart_EntropySource)(uint8_t* buffer, intptr_t length); |
| |
| /** |
| * Callback provided by the embedder that is used by the vmservice isolate |
| * to request the asset archive. The asset archive must be an uncompressed tar |
| * archive that is stored in a Uint8List. |
| * |
| * If the embedder has no vmservice isolate assets, the callback can be NULL. |
| * |
| * \return The embedder must return a handle to a Uint8List containing an |
| * uncompressed tar archive or null. |
| */ |
| typedef Dart_Handle (*Dart_GetVMServiceAssetsArchive)(); |
| |
| /** |
| * The current version of the Dart_InitializeFlags. Should be incremented every |
| * time Dart_InitializeFlags changes in a binary incompatible way. |
| */ |
| #define DART_INITIALIZE_PARAMS_CURRENT_VERSION (0x00000001) |
| |
| /** |
| * Describes how to initialize the VM. Used with Dart_Initialize. |
| * |
| * \param version Identifies the version of the struct used by the client. |
| * should be initialized to DART_INITIALIZE_PARAMS_CURRENT_VERSION. |
| * \param vm_isolate_snapshot A buffer containing a snapshot of the VM isolate |
| * or NULL if no snapshot is provided. |
| * \param instructions_snapshot A buffer containing a snapshot of precompiled |
| * instructions, or NULL if no snapshot is provided. |
| * \param create A function to be called during isolate creation. |
| * See Dart_IsolateCreateCallback. |
| * \param shutdown A function to be called when an isolate is shutdown. |
| * See Dart_IsolateShutdownCallback. |
| * \param get_service_assets A function to be called by the service isolate when |
| * it requires the vmservice assets archive. |
| * See Dart_GetVMServiceAssetsArchive. |
| */ |
| typedef struct { |
| int32_t version; |
| const uint8_t* vm_isolate_snapshot; |
| const uint8_t* instructions_snapshot; |
| const uint8_t* data_snapshot; |
| Dart_IsolateCreateCallback create; |
| Dart_IsolateShutdownCallback shutdown; |
| Dart_ThreadExitCallback thread_exit; |
| Dart_FileOpenCallback file_open; |
| Dart_FileReadCallback file_read; |
| Dart_FileWriteCallback file_write; |
| Dart_FileCloseCallback file_close; |
| Dart_EntropySource entropy_source; |
| Dart_GetVMServiceAssetsArchive get_service_assets; |
| } Dart_InitializeParams; |
| |
| /** |
| * Initializes the VM. |
| * |
| * \param flags A struct containing initialization information. The version |
| * field of the struct must be DART_INITIALIZE_PARAMS_CURRENT_VERSION. |
| * |
| * \return NULL if initialization is successful. Returns an error message |
| * otherwise. The caller is responsible for freeing the error message. |
| */ |
| DART_EXPORT char* Dart_Initialize(Dart_InitializeParams* params); |
| |
| /** |
| * Cleanup state in the VM before process termination. |
| * |
| * \return NULL if cleanup is successful. Returns an error message otherwise. |
| * The caller is responsible for freeing the error message. |
| */ |
| DART_EXPORT char* Dart_Cleanup(); |
| |
| /** |
| * Sets command line flags. Should be called before Dart_Initialize. |
| * |
| * \param argc The length of the arguments array. |
| * \param argv An array of arguments. |
| * |
| * \return True if VM flags set successfully. |
| */ |
| DART_EXPORT bool Dart_SetVMFlags(int argc, const char** argv); |
| |
| /** |
| * Returns true if the named VM flag is set. |
| */ |
| DART_EXPORT bool Dart_IsVMFlagSet(const char* flag_name); |
| |
| |
| /* |
| * ======== |
| * Isolates |
| * ======== |
| */ |
| |
| /** |
| * Creates a new isolate. The new isolate becomes the current isolate. |
| * |
| * A snapshot can be used to restore the VM quickly to a saved state |
| * and is useful for fast startup. If snapshot data is provided, the |
| * isolate will be started using that snapshot data. Requires a core snapshot or |
| * an app snapshot created by Dart_CreateSnapshot or |
| * Dart_CreatePrecompiledSnapshot* from a VM with the same version. |
| * |
| * Requires there to be no current isolate. |
| * |
| * \param script_uri The name of the script this isolate will load. |
| * Provided only for advisory purposes to improve debugging messages. |
| * \param main The name of the main entry point this isolate will run. |
| * Provided only for advisory purposes to improve debugging messages. |
| * \param snapshot A buffer containing a snapshot of the isolate or |
| * NULL if no snapshot is provided. |
| * \param flags Pointer to VM specific flags or NULL for default flags. |
| * \param callback_data Embedder data. This data will be passed to |
| * the Dart_IsolateCreateCallback when new isolates are spawned from |
| * this parent isolate. |
| * \param error DOCUMENT |
| * |
| * \return The new isolate is returned. May be NULL if an error |
| * occurs during isolate initialization. |
| */ |
| DART_EXPORT Dart_Isolate Dart_CreateIsolate(const char* script_uri, |
| const char* main, |
| const uint8_t* snapshot, |
| Dart_IsolateFlags* flags, |
| void* callback_data, |
| char** error); |
| /* TODO(turnidge): Document behavior when there is already a current |
| * isolate. */ |
| |
| /** |
| * Creates a new isolate from a Dart Kernel file. The new isolate |
| * becomes the current isolate. |
| * |
| * Requires there to be no current isolate. |
| * |
| * After this call, the `kernel_program` needs to be supplied to a call to |
| * `Dart_LoadKernel()` which will then take ownership of the memory. |
| * |
| * \param script_uri The name of the script this isolate will load. |
| * Provided only for advisory purposes to improve debugging messages. |
| * \param main The name of the main entry point this isolate will run. |
| * Provided only for advisory purposes to improve debugging messages. |
| * \param kernel_program The `dart::kernel::Program` object. |
| * \param flags Pointer to VM specific flags or NULL for default flags. |
| * \param callback_data Embedder data. This data will be passed to |
| * the Dart_IsolateCreateCallback when new isolates are spawned from |
| * this parent isolate. |
| * \param error DOCUMENT |
| * |
| * \return The new isolate is returned. May be NULL if an error |
| * occurs during isolate initialization. |
| */ |
| DART_EXPORT Dart_Isolate Dart_CreateIsolateFromKernel(const char* script_uri, |
| const char* main, |
| void* kernel_program, |
| Dart_IsolateFlags* flags, |
| void* callback_data, |
| char** error); |
| /** |
| * Shuts down the current isolate. After this call, the current isolate |
| * is NULL. Invokes the shutdown callback and any callbacks of remaining |
| * weak persistent handles. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT void Dart_ShutdownIsolate(); |
| /* TODO(turnidge): Document behavior when there is no current isolate. */ |
| |
| /** |
| * Returns the current isolate. Will return NULL if there is no |
| * current isolate. |
| */ |
| DART_EXPORT Dart_Isolate Dart_CurrentIsolate(); |
| |
| /** |
| * Returns the callback data associated with the current Isolate. This data was |
| * passed to the isolate when it was created. |
| */ |
| DART_EXPORT void* Dart_CurrentIsolateData(); |
| |
| /** |
| * Returns the callback data associated with the specified Isolate. This data |
| * was passed to the isolate when it was created. |
| * The embedder is responsible for ensuring the consistency of this data |
| * with respect to the lifecycle of an Isolate. |
| */ |
| DART_EXPORT void* Dart_IsolateData(Dart_Isolate isolate); |
| |
| /** |
| * Returns the debugging name for the current isolate. |
| * |
| * This name is unique to each isolate and should only be used to make |
| * debugging messages more comprehensible. |
| */ |
| DART_EXPORT Dart_Handle Dart_DebugName(); |
| |
| /** |
| * Enters an isolate. After calling this function, |
| * the current isolate will be set to the provided isolate. |
| * |
| * Requires there to be no current isolate. Multiple threads may not be in |
| * the same isolate at once. |
| */ |
| DART_EXPORT void Dart_EnterIsolate(Dart_Isolate isolate); |
| |
| /** |
| * Notifies the VM that the current thread should not be profiled until a |
| * matching call to Dart_ThreadEnableProfiling is made. |
| * |
| * NOTE: By default, if a thread has entered an isolate it will be profiled. |
| * This function should be used when an embedder knows a thread is about |
| * to make a blocking call and wants to avoid unnecessary interrupts by |
| * the profiler. |
| */ |
| DART_EXPORT void Dart_ThreadDisableProfiling(); |
| |
| /** |
| * Notifies the VM that the current thread should be profiled. |
| * |
| * NOTE: It is only legal to call this function *after* calling |
| * Dart_ThreadDisableProfiling. |
| * |
| * NOTE: By default, if a thread has entered an isolate it will be profiled. |
| */ |
| DART_EXPORT void Dart_ThreadEnableProfiling(); |
| |
| /** |
| * Exits an isolate. After this call, Dart_CurrentIsolate will |
| * return NULL. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT void Dart_ExitIsolate(); |
| /* TODO(turnidge): We don't want users of the api to be able to exit a |
| * "pure" dart isolate. Implement and document. */ |
| |
| /** |
| * Creates a full snapshot of the current isolate heap. |
| * |
| * A full snapshot is a compact representation of the dart vm isolate heap |
| * and dart isolate heap states. These snapshots are used to initialize |
| * the vm isolate on startup and fast initialization of an isolate. |
| * A Snapshot of the heap is created before any dart code has executed. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param buffer Returns a pointer to a buffer containing the |
| * snapshot. This buffer is scope allocated and is only valid |
| * until the next call to Dart_ExitScope. |
| * \param size Returns the size of the buffer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_CreateSnapshot(uint8_t** vm_isolate_snapshot_buffer, |
| intptr_t* vm_isolate_snapshot_size, |
| uint8_t** isolate_snapshot_buffer, |
| intptr_t* isolate_snapshot_size); |
| |
| /** |
| * Creates a snapshot of the application script loaded in the isolate. |
| * |
| * A script snapshot can be used for implementing fast startup of applications |
| * (skips the script tokenizing and parsing process). A Snapshot of the script |
| * can only be created before any dart code has executed. |
| * |
| * Requires there to be a current isolate which already has loaded script. |
| * |
| * \param buffer Returns a pointer to a buffer containing |
| * the snapshot. This buffer is scope allocated and is only valid |
| * until the next call to Dart_ExitScope. |
| * \param size Returns the size of the buffer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_CreateScriptSnapshot(uint8_t** buffer, |
| intptr_t* size); |
| |
| /** |
| * Creates a snapshot of the specified library loaded in the isolate. |
| * |
| * A library snapshot can be used for implementing fast startup of applications |
| * (skips tokenizing and parsing process). A Snapshot of the library |
| * can only be created before any dart code has executed. |
| * |
| * Requires there to be a current isolate which already has loaded the library. |
| * |
| * \param library A library for which the snapshot needs to be created. |
| * \param buffer Returns a pointer to a buffer containing |
| * the snapshot. This buffer is scope allocated and is only valid |
| * until the next call to Dart_ExitScope. |
| * \param size Returns the size of the buffer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_CreateLibrarySnapshot(Dart_Handle library, |
| uint8_t** buffer, |
| intptr_t* size); |
| |
| /** |
| * Schedules an interrupt for the specified isolate. |
| * |
| * When the isolate is interrupted, the isolate interrupt callback |
| * will be invoked with 'isolate' as the current isolate (see |
| * Dart_SetIsolateEventHandler). |
| * |
| * \param isolate The isolate to be interrupted. |
| */ |
| DART_EXPORT void Dart_InterruptIsolate(Dart_Isolate isolate); |
| |
| /** |
| * Make isolate runnable. |
| * |
| * When isolates are spawned this function is used to indicate that |
| * the creation and initialization (including script loading) of the |
| * isolate is complete and the isolate can start. |
| * This function does not expect there to be a current isolate. |
| * |
| * \param isolate The isolate to be made runnable. |
| */ |
| DART_EXPORT bool Dart_IsolateMakeRunnable(Dart_Isolate isolate); |
| |
| |
| /* |
| * ================== |
| * Messages and Ports |
| * ================== |
| */ |
| |
| /** |
| * A port is used to send or receive inter-isolate messages |
| */ |
| typedef int64_t Dart_Port; |
| |
| /** |
| * ILLEGAL_PORT is a port number guaranteed never to be associated with a valid |
| * port. |
| */ |
| #define ILLEGAL_PORT ((Dart_Port)0) |
| |
| /** |
| * A message notification callback. |
| * |
| * This callback allows the embedder to provide an alternate wakeup |
| * mechanism for the delivery of inter-isolate messages. It is the |
| * responsibility of the embedder to call Dart_HandleMessage to |
| * process the message. |
| */ |
| typedef void (*Dart_MessageNotifyCallback)(Dart_Isolate dest_isolate); |
| |
| /** |
| * Allows embedders to provide an alternative wakeup mechanism for the |
| * delivery of inter-isolate messages. This setting only applies to |
| * the current isolate. |
| * |
| * Most embedders will only call this function once, before isolate |
| * execution begins. If this function is called after isolate |
| * execution begins, the embedder is responsible for threading issues. |
| */ |
| DART_EXPORT void Dart_SetMessageNotifyCallback( |
| Dart_MessageNotifyCallback message_notify_callback); |
| /* TODO(turnidge): Consider moving this to isolate creation so that it |
| * is impossible to mess up. */ |
| |
| /** |
| * Query the current message notify callback for the isolate. |
| * |
| * \return The current message notify callback for the isolate. |
| */ |
| DART_EXPORT Dart_MessageNotifyCallback Dart_GetMessageNotifyCallback(); |
| |
| /** |
| * The VM's default message handler supports pausing an isolate before it |
| * processes the first message and right after the it processes the isolate's |
| * final message. This can be controlled for all isolates by two VM flags: |
| * |
| * `--pause-isolates-on-start` |
| * `--pause-isolates-on-exit` |
| * |
| * Additionally, Dart_SetShouldPauseOnStart and Dart_SetShouldPauseOnExit can be |
| * used to control this behaviour on a per-isolate basis. |
| * |
| * When an embedder is using a Dart_MessageNotifyCallback the embedder |
| * needs to cooperate with the VM so that the service protocol can report |
| * accurate information about isolates and so that tools such as debuggers |
| * work reliably. |
| * |
| * The following functions can be used to implement pausing on start and exit. |
| */ |
| |
| /** |
| * If the VM flag `--pause-isolates-on-start` was passed this will be true. |
| * |
| * \return A boolean value indicating if pause on start was requested. |
| */ |
| DART_EXPORT bool Dart_ShouldPauseOnStart(); |
| |
| /** |
| * Override the VM flag `--pause-isolates-on-start` for the current isolate. |
| * |
| * \param should_pause Should the isolate be paused on start? |
| * |
| * NOTE: This must be called before Dart_IsolateMakeRunnable. |
| */ |
| DART_EXPORT void Dart_SetShouldPauseOnStart(bool should_pause); |
| |
| /** |
| * Is the current isolate paused on start? |
| * |
| * \return A boolean value indicating if the isolate is paused on start. |
| */ |
| DART_EXPORT bool Dart_IsPausedOnStart(); |
| |
| /** |
| * Called when the embedder has paused the current isolate on start and when |
| * the embedder has resumed the isolate. |
| * |
| * \param paused Is the isolate paused on start? |
| */ |
| DART_EXPORT void Dart_SetPausedOnStart(bool paused); |
| |
| /** |
| * If the VM flag `--pause-isolates-on-exit` was passed this will be true. |
| * |
| * \return A boolean value indicating if pause on exit was requested. |
| */ |
| DART_EXPORT bool Dart_ShouldPauseOnExit(); |
| |
| /** |
| * Override the VM flag `--pause-isolates-on-exit` for the current isolate. |
| * |
| * \param should_pause Should the isolate be paused on exit? |
| * |
| */ |
| DART_EXPORT void Dart_SetShouldPauseOnExit(bool should_pause); |
| |
| /** |
| * Is the current isolate paused on exit? |
| * |
| * \return A boolean value indicating if the isolate is paused on exit. |
| */ |
| DART_EXPORT bool Dart_IsPausedOnExit(); |
| |
| /** |
| * Called when the embedder has paused the current isolate on exit and when |
| * the embedder has resumed the isolate. |
| * |
| * \param paused Is the isolate paused on exit? |
| */ |
| DART_EXPORT void Dart_SetPausedOnExit(bool paused); |
| |
| |
| /** |
| * Called when the embedder has caught a top level unhandled exception error |
| * in the current isolate. |
| * |
| * NOTE: It is illegal to call this twice on the same isolate without first |
| * clearing the sticky error to null. |
| * |
| * \param error The unhandled exception error. |
| */ |
| DART_EXPORT void Dart_SetStickyError(Dart_Handle error); |
| |
| |
| /** |
| * Does the current isolate have a sticky error? |
| */ |
| DART_EXPORT bool Dart_HasStickyError(); |
| |
| |
| /** |
| * Gets the sticky error for the current isolate. |
| * |
| * \return A handle to the sticky error object or null. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetStickyError(); |
| |
| |
| /** |
| * Handles the next pending message for the current isolate. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_HandleMessage(); |
| |
| /** |
| * Handles all pending messages for the current isolate. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_HandleMessages(); |
| |
| /** |
| * Handles any pending messages for the vm service for the current |
| * isolate. |
| * |
| * This function may be used by an embedder at a breakpoint to avoid |
| * pausing the vm service. |
| * |
| * This function can indirectly cause the message notify callback to |
| * be called. |
| * |
| * \return true if the vm service requests the program resume |
| * execution, false otherwise |
| */ |
| DART_EXPORT bool Dart_HandleServiceMessages(); |
| |
| /** |
| * Does the current isolate have pending service messages? |
| * |
| * \return true if the isolate has pending service messages, false otherwise. |
| */ |
| DART_EXPORT bool Dart_HasServiceMessages(); |
| |
| /** |
| * Processes any incoming messages for the current isolate. |
| * |
| * This function may only be used when the embedder has not provided |
| * an alternate message delivery mechanism with |
| * Dart_SetMessageCallbacks. It is provided for convenience. |
| * |
| * This function waits for incoming messages for the current |
| * isolate. As new messages arrive, they are handled using |
| * Dart_HandleMessage. The routine exits when all ports to the |
| * current isolate are closed. |
| * |
| * \return A valid handle if the run loop exited successfully. If an |
| * exception or other error occurs while processing messages, an |
| * error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_RunLoop(); |
| /* TODO(turnidge): Should this be removed from the public api? */ |
| |
| /** |
| * Gets the main port id for the current isolate. |
| */ |
| DART_EXPORT Dart_Port Dart_GetMainPortId(); |
| |
| /** |
| * Does the current isolate have live ReceivePorts? |
| * |
| * A ReceivePort is live when it has not been closed. |
| */ |
| DART_EXPORT bool Dart_HasLivePorts(); |
| |
| /** |
| * Posts a message for some isolate. The message is a serialized |
| * object. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param port The destination port. |
| * \param object An object from the current isolate. |
| * |
| * \return True if the message was posted. |
| */ |
| DART_EXPORT bool Dart_Post(Dart_Port port_id, Dart_Handle object); |
| |
| /** |
| * Returns a new SendPort with the provided port id. |
| * |
| * \param port_id The destination port. |
| * |
| * \return A new SendPort if no errors occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewSendPort(Dart_Port port_id); |
| |
| /** |
| * Gets the SendPort id for the provided SendPort. |
| * \param port A SendPort object whose id is desired. |
| * \param port_id Returns the id of the SendPort. |
| * \return Success if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_SendPortGetId(Dart_Handle port, |
| Dart_Port* port_id); |
| |
| |
| /* |
| * ====== |
| * Scopes |
| * ====== |
| */ |
| |
| /** |
| * Enters a new scope. |
| * |
| * All new local handles will be created in this scope. Additionally, |
| * some functions may return "scope allocated" memory which is only |
| * valid within this scope. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT void Dart_EnterScope(); |
| |
| /** |
| * Exits a scope. |
| * |
| * The previous scope (if any) becomes the current scope. |
| * |
| * Requires there to be a current isolate. |
| */ |
| DART_EXPORT void Dart_ExitScope(); |
| |
| /** |
| * The Dart VM uses "zone allocation" for temporary structures. Zones |
| * support very fast allocation of small chunks of memory. The chunks |
| * cannot be deallocated individually, but instead zones support |
| * deallocating all chunks in one fast operation. |
| * |
| * This function makes it possible for the embedder to allocate |
| * temporary data in the VMs zone allocator. |
| * |
| * Zone allocation is possible: |
| * 1. when inside a scope where local handles can be allocated |
| * 2. when processing a message from a native port in a native port |
| * handler |
| * |
| * All the memory allocated this way will be reclaimed either on the |
| * next call to Dart_ExitScope or when the native port handler exits. |
| * |
| * \param size Size of the memory to allocate. |
| * |
| * \return A pointer to the allocated memory. NULL if allocation |
| * failed. Failure might due to is no current VM zone. |
| */ |
| DART_EXPORT uint8_t* Dart_ScopeAllocate(intptr_t size); |
| |
| |
| /* |
| * ======= |
| * Objects |
| * ======= |
| */ |
| |
| /** |
| * Returns the null object. |
| * |
| * \return A handle to the null object. |
| */ |
| DART_EXPORT Dart_Handle Dart_Null(); |
| |
| /** |
| * Returns the empty string object. |
| * |
| * \return A handle to the empty string object. |
| */ |
| DART_EXPORT Dart_Handle Dart_EmptyString(); |
| |
| /** |
| * Is this object null? |
| */ |
| DART_EXPORT bool Dart_IsNull(Dart_Handle object); |
| |
| /** |
| * Checks if the two objects are equal. |
| * |
| * The result of the comparison is returned through the 'equal' |
| * parameter. The return value itself is used to indicate success or |
| * failure, not equality. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param obj1 An object to be compared. |
| * \param obj2 An object to be compared. |
| * \param equal Returns the result of the equality comparison. |
| * |
| * \return A valid handle if no error occurs during the comparison. |
| */ |
| DART_EXPORT Dart_Handle Dart_ObjectEquals(Dart_Handle obj1, |
| Dart_Handle obj2, |
| bool* equal); |
| |
| /** |
| * Is this object an instance of some type? |
| * |
| * The result of the test is returned through the 'instanceof' parameter. |
| * The return value itself is used to indicate success or failure. |
| * |
| * \param object An object. |
| * \param type A type. |
| * \param instanceof Return true if 'object' is an instance of type 'type'. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_ObjectIsType(Dart_Handle object, |
| Dart_Handle type, |
| bool* instanceof); |
| |
| |
| /** |
| * Query object type. |
| * |
| * \param object Some Object. |
| * |
| * \return true if Object is of the specified type. |
| */ |
| DART_EXPORT bool Dart_IsInstance(Dart_Handle object); |
| DART_EXPORT bool Dart_IsNumber(Dart_Handle object); |
| DART_EXPORT bool Dart_IsInteger(Dart_Handle object); |
| DART_EXPORT bool Dart_IsDouble(Dart_Handle object); |
| DART_EXPORT bool Dart_IsBoolean(Dart_Handle object); |
| DART_EXPORT bool Dart_IsString(Dart_Handle object); |
| DART_EXPORT bool Dart_IsStringLatin1(Dart_Handle object); /* (ISO-8859-1) */ |
| DART_EXPORT bool Dart_IsExternalString(Dart_Handle object); |
| DART_EXPORT bool Dart_IsList(Dart_Handle object); |
| DART_EXPORT bool Dart_IsMap(Dart_Handle object); |
| DART_EXPORT bool Dart_IsLibrary(Dart_Handle object); |
| DART_EXPORT bool Dart_IsType(Dart_Handle handle); |
| DART_EXPORT bool Dart_IsFunction(Dart_Handle handle); |
| DART_EXPORT bool Dart_IsVariable(Dart_Handle handle); |
| DART_EXPORT bool Dart_IsTypeVariable(Dart_Handle handle); |
| DART_EXPORT bool Dart_IsClosure(Dart_Handle object); |
| DART_EXPORT bool Dart_IsTypedData(Dart_Handle object); |
| DART_EXPORT bool Dart_IsByteBuffer(Dart_Handle object); |
| DART_EXPORT bool Dart_IsFuture(Dart_Handle object); |
| |
| |
| /* |
| * ========= |
| * Instances |
| * ========= |
| */ |
| |
| /* |
| * For the purposes of the embedding api, not all objects returned are |
| * Dart language objects. Within the api, we use the term 'Instance' |
| * to indicate handles which refer to true Dart language objects. |
| * |
| * TODO(turnidge): Reorganize the "Object" section above, pulling down |
| * any functions that more properly belong here. */ |
| |
| /** |
| * Gets the type of a Dart language object. |
| * |
| * \param instance Some Dart object. |
| * |
| * \return If no error occurs, the type is returned. Otherwise an |
| * error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_InstanceGetType(Dart_Handle instance); |
| |
| |
| /* |
| * ============================= |
| * Numbers, Integers and Doubles |
| * ============================= |
| */ |
| |
| /** |
| * Does this Integer fit into a 64-bit signed integer? |
| * |
| * \param integer An integer. |
| * \param fits Returns true if the integer fits into a 64-bit signed integer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_IntegerFitsIntoInt64(Dart_Handle integer, |
| bool* fits); |
| |
| /** |
| * Does this Integer fit into a 64-bit unsigned integer? |
| * |
| * \param integer An integer. |
| * \param fits Returns true if the integer fits into a 64-bit unsigned integer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_IntegerFitsIntoUint64(Dart_Handle integer, |
| bool* fits); |
| |
| /** |
| * Returns an Integer with the provided value. |
| * |
| * \param value The value of the integer. |
| * |
| * \return The Integer object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewInteger(int64_t value); |
| |
| /** |
| * Returns an Integer with the provided value. |
| * |
| * \param value The unsigned value of the integer. |
| * |
| * \return The Integer object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewIntegerFromUint64(uint64_t value); |
| |
| /** |
| * Returns an Integer with the provided value. |
| * |
| * \param value The value of the integer represented as a C string |
| * containing a hexadecimal number. |
| * |
| * \return The Integer object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewIntegerFromHexCString(const char* value); |
| |
| /** |
| * Gets the value of an Integer. |
| * |
| * The integer must fit into a 64-bit signed integer, otherwise an error occurs. |
| * |
| * \param integer An Integer. |
| * \param value Returns the value of the Integer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_IntegerToInt64(Dart_Handle integer, |
| int64_t* value); |
| |
| /** |
| * Gets the value of an Integer. |
| * |
| * The integer must fit into a 64-bit unsigned integer, otherwise an |
| * error occurs. |
| * |
| * \param integer An Integer. |
| * \param value Returns the value of the Integer. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_IntegerToUint64(Dart_Handle integer, |
| uint64_t* value); |
| |
| /** |
| * Gets the value of an integer as a hexadecimal C string. |
| * |
| * \param integer An Integer. |
| * \param value Returns the value of the Integer as a hexadecimal C |
| * string. This C string is scope allocated and is only valid until |
| * the next call to Dart_ExitScope. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_IntegerToHexCString(Dart_Handle integer, |
| const char** value); |
| |
| /** |
| * Returns a Double with the provided value. |
| * |
| * \param value A double. |
| * |
| * \return The Double object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewDouble(double value); |
| |
| /** |
| * Gets the value of a Double |
| * |
| * \param double_obj A Double |
| * \param value Returns the value of the Double. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_DoubleValue(Dart_Handle double_obj, double* value); |
| |
| |
| /* |
| * ======== |
| * Booleans |
| * ======== |
| */ |
| |
| /** |
| * Returns the True object. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \return A handle to the True object. |
| */ |
| DART_EXPORT Dart_Handle Dart_True(); |
| |
| /** |
| * Returns the False object. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \return A handle to the False object. |
| */ |
| DART_EXPORT Dart_Handle Dart_False(); |
| |
| /** |
| * Returns a Boolean with the provided value. |
| * |
| * \param value true or false. |
| * |
| * \return The Boolean object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewBoolean(bool value); |
| |
| /** |
| * Gets the value of a Boolean |
| * |
| * \param boolean_obj A Boolean |
| * \param value Returns the value of the Boolean. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_BooleanValue(Dart_Handle boolean_obj, bool* value); |
| |
| |
| /* |
| * ======= |
| * Strings |
| * ======= |
| */ |
| |
| /** |
| * Gets the length of a String. |
| * |
| * \param str A String. |
| * \param length Returns the length of the String. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringLength(Dart_Handle str, intptr_t* length); |
| |
| /** |
| * Returns a String built from the provided C string |
| * (There is an implicit assumption that the C string passed in contains |
| * UTF-8 encoded characters and '\0' is considered as a termination |
| * character). |
| * |
| * \param value A C String |
| * |
| * \return The String object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewStringFromCString(const char* str); |
| /* TODO(turnidge): Document what happens when we run out of memory |
| * during this call. */ |
| |
| /** |
| * Returns a String built from an array of UTF-8 encoded characters. |
| * |
| * \param utf8_array An array of UTF-8 encoded characters. |
| * \param length The length of the codepoints array. |
| * |
| * \return The String object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewStringFromUTF8(const uint8_t* utf8_array, |
| intptr_t length); |
| |
| /** |
| * Returns a String built from an array of UTF-16 encoded characters. |
| * |
| * \param utf16_array An array of UTF-16 encoded characters. |
| * \param length The length of the codepoints array. |
| * |
| * \return The String object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewStringFromUTF16(const uint16_t* utf16_array, |
| intptr_t length); |
| |
| /** |
| * Returns a String built from an array of UTF-32 encoded characters. |
| * |
| * \param utf32_array An array of UTF-32 encoded characters. |
| * \param length The length of the codepoints array. |
| * |
| * \return The String object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewStringFromUTF32(const int32_t* utf32_array, |
| intptr_t length); |
| |
| /** |
| * Returns a String which references an external array of |
| * Latin-1 (ISO-8859-1) encoded characters. |
| * |
| * \param latin1_array Array of Latin-1 encoded characters. This must not move. |
| * \param length The length of the characters array. |
| * \param peer An external pointer to associate with this string. |
| * \param cback A callback to be called when this string is finalized. |
| * |
| * \return The String object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_NewExternalLatin1String(const uint8_t* latin1_array, |
| intptr_t length, |
| void* peer, |
| Dart_PeerFinalizer cback); |
| |
| /** |
| * Returns a String which references an external array of UTF-16 encoded |
| * characters. |
| * |
| * \param utf16_array An array of UTF-16 encoded characters. This must not move. |
| * \param length The length of the characters array. |
| * \param peer An external pointer to associate with this string. |
| * \param cback A callback to be called when this string is finalized. |
| * |
| * \return The String object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewExternalUTF16String(const uint16_t* utf16_array, |
| intptr_t length, |
| void* peer, |
| Dart_PeerFinalizer cback); |
| |
| /** |
| * Gets the C string representation of a String. |
| * (It is a sequence of UTF-8 encoded values with a '\0' termination.) |
| * |
| * \param str A string. |
| * \param cstr Returns the String represented as a C string. |
| * This C string is scope allocated and is only valid until |
| * the next call to Dart_ExitScope. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringToCString(Dart_Handle str, |
| const char** cstr); |
| |
| /** |
| * Gets a UTF-8 encoded representation of a String. |
| * |
| * \param str A string. |
| * \param utf8_array Returns the String represented as UTF-8 code |
| * units. This UTF-8 array is scope allocated and is only valid |
| * until the next call to Dart_ExitScope. |
| * \param length Used to return the length of the array which was |
| * actually used. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringToUTF8(Dart_Handle str, |
| uint8_t** utf8_array, |
| intptr_t* length); |
| |
| /** |
| * Gets the data corresponding to the string object. This function returns |
| * the data only for Latin-1 (ISO-8859-1) string objects. For all other |
| * string objects it returns an error. |
| * |
| * \param str A string. |
| * \param latin1_array An array allocated by the caller, used to return |
| * the string data. |
| * \param length Used to pass in the length of the provided array. |
| * Used to return the length of the array which was actually used. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringToLatin1(Dart_Handle str, |
| uint8_t* latin1_array, |
| intptr_t* length); |
| |
| /** |
| * Gets the UTF-16 encoded representation of a string. |
| * |
| * \param str A string. |
| * \param utf16_array An array allocated by the caller, used to return |
| * the array of UTF-16 encoded characters. |
| * \param length Used to pass in the length of the provided array. |
| * Used to return the length of the array which was actually used. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringToUTF16(Dart_Handle str, |
| uint16_t* utf16_array, |
| intptr_t* length); |
| |
| /** |
| * Gets the storage size in bytes of a String. |
| * |
| * \param str A String. |
| * \param length Returns the storage size in bytes of the String. |
| * This is the size in bytes needed to store the String. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringStorageSize(Dart_Handle str, intptr_t* size); |
| |
| /** |
| * Converts a String into an ExternalString. |
| * The original object is morphed into an external string object. |
| * |
| * \param array External space into which the string data will be |
| * copied into. This must not move. |
| * \param external_allocation_size The size in bytes of the provided external |
| * space (array). Used to inform the garbage collector. |
| * \param peer An external pointer to associate with this string. |
| * \param cback A callback to be called when this string is finalized. |
| * |
| * \return the converted ExternalString object if no error occurs. |
| * Otherwise returns an error handle. |
| * If the object is a valid string but if it cannot be externalized |
| * the string data is copied into the external space specified |
| * and the passed in peer is setup as a peer for this string object. |
| * In this case the function returns the original String object as is. |
| * |
| * For example: |
| * intptr_t size; |
| * Dart_Handle result; |
| * result = DartStringStorageSize(str, &size); |
| * void* data = malloc(size); |
| * result = Dart_MakeExternalString(str, data, size, NULL, NULL); |
| * |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_MakeExternalString(Dart_Handle str, |
| void* array, |
| intptr_t external_allocation_size, |
| void* peer, |
| Dart_PeerFinalizer cback); |
| |
| /** |
| * Retrieves some properties associated with a String. |
| * Properties retrieved are: |
| * - character size of the string (one or two byte) |
| * - length of the string |
| * - peer pointer of string if it is an external string. |
| * \param str A String. |
| * \param char_size Returns the character size of the String. |
| * \param str_len Returns the length of the String. |
| * \param peer Returns the peer pointer associated with the String or 0 if |
| * there is no peer pointer for it. |
| * \return Success if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_StringGetProperties(Dart_Handle str, |
| intptr_t* char_size, |
| intptr_t* str_len, |
| void** peer); |
| |
| /* |
| * ===== |
| * Lists |
| * ===== |
| */ |
| |
| /** |
| * Returns a List of the desired length. |
| * |
| * \param length The length of the list. |
| * |
| * \return The List object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewList(intptr_t length); |
| |
| /** |
| * Gets the length of a List. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param list A List. |
| * \param length Returns the length of the List. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_ListLength(Dart_Handle list, intptr_t* length); |
| |
| /** |
| * Gets the Object at some index of a List. |
| * |
| * If the index is out of bounds, an error occurs. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param list A List. |
| * \param index A valid index into the List. |
| * |
| * \return The Object in the List at the specified index if no error |
| * occurs. Otherwise returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_ListGetAt(Dart_Handle list, intptr_t index); |
| |
| /** |
| * Gets a range of Objects from a List. |
| * |
| * If any of the requested index values are out of bounds, an error occurs. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param list A List. |
| * \param offset The offset of the first item to get. |
| * \param length The number of items to get. |
| * \param result A pointer to fill with the objects. |
| * |
| * \return Success if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_ListGetRange(Dart_Handle list, |
| intptr_t offset, |
| intptr_t length, |
| Dart_Handle* result); |
| |
| /** |
| * Sets the Object at some index of a List. |
| * |
| * If the index is out of bounds, an error occurs. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param array A List. |
| * \param index A valid index into the List. |
| * \param value The Object to put in the List. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_ListSetAt(Dart_Handle list, |
| intptr_t index, |
| Dart_Handle value); |
| |
| /** |
| * May generate an unhandled exception error. |
| */ |
| DART_EXPORT Dart_Handle Dart_ListGetAsBytes(Dart_Handle list, |
| intptr_t offset, |
| uint8_t* native_array, |
| intptr_t length); |
| |
| /** |
| * May generate an unhandled exception error. |
| */ |
| DART_EXPORT Dart_Handle Dart_ListSetAsBytes(Dart_Handle list, |
| intptr_t offset, |
| const uint8_t* native_array, |
| intptr_t length); |
| |
| |
| /* |
| * ==== |
| * Maps |
| * ==== |
| */ |
| |
| /** |
| * Gets the Object at some key of a Map. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param map A Map. |
| * \param key An Object. |
| * |
| * \return The value in the map at the specified key, null if the map does not |
| * contain the key, or an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_MapGetAt(Dart_Handle map, Dart_Handle key); |
| |
| /** |
| * Returns whether the Map contains a given key. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param map A Map. |
| * |
| * \return A handle on a boolean indicating whether map contains the key. |
| * Otherwise returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_MapContainsKey(Dart_Handle map, Dart_Handle key); |
| |
| /** |
| * Gets the list of keys of a Map. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param map A Map. |
| * |
| * \return The list of key Objects if no error occurs. Otherwise returns an |
| * error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_MapKeys(Dart_Handle map); |
| |
| |
| /* |
| * ========== |
| * Typed Data |
| * ========== |
| */ |
| |
| typedef enum { |
| Dart_TypedData_kByteData = 0, |
| Dart_TypedData_kInt8, |
| Dart_TypedData_kUint8, |
| Dart_TypedData_kUint8Clamped, |
| Dart_TypedData_kInt16, |
| Dart_TypedData_kUint16, |
| Dart_TypedData_kInt32, |
| Dart_TypedData_kUint32, |
| Dart_TypedData_kInt64, |
| Dart_TypedData_kUint64, |
| Dart_TypedData_kFloat32, |
| Dart_TypedData_kFloat64, |
| Dart_TypedData_kFloat32x4, |
| Dart_TypedData_kInvalid |
| } Dart_TypedData_Type; |
| |
| /** |
| * Return type if this object is a TypedData object. |
| * |
| * \return kInvalid if the object is not a TypedData object or the appropriate |
| * Dart_TypedData_Type. |
| */ |
| DART_EXPORT Dart_TypedData_Type Dart_GetTypeOfTypedData(Dart_Handle object); |
| |
| /** |
| * Return type if this object is an external TypedData object. |
| * |
| * \return kInvalid if the object is not an external TypedData object or |
| * the appropriate Dart_TypedData_Type. |
| */ |
| DART_EXPORT Dart_TypedData_Type |
| Dart_GetTypeOfExternalTypedData(Dart_Handle object); |
| |
| /** |
| * Returns a TypedData object of the desired length and type. |
| * |
| * \param type The type of the TypedData object. |
| * \param length The length of the TypedData object (length in type units). |
| * |
| * \return The TypedData object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewTypedData(Dart_TypedData_Type type, |
| intptr_t length); |
| |
| /** |
| * Returns a TypedData object which references an external data array. |
| * |
| * \param type The type of the data array. |
| * \param value A data array. This array must not move. |
| * \param length The length of the data array (length in type units). |
| * \param peer An external pointer to associate with this array. |
| * |
| * \return The TypedData object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewExternalTypedData(Dart_TypedData_Type type, |
| void* data, |
| intptr_t length); |
| |
| /** |
| * Returns a ByteBuffer object for the typed data. |
| * |
| * \param type_data The TypedData object. |
| * |
| * \return The ByteBuffer object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_NewByteBuffer(Dart_Handle typed_data); |
| |
| /** |
| * Acquires access to the internal data address of a TypedData object. |
| * |
| * \param object The typed data object whose internal data address is to |
| * be accessed. |
| * \param type The type of the object is returned here. |
| * \param data The internal data address is returned here. |
| * \param len Size of the typed array is returned here. |
| * |
| * Notes: |
| * When the internal address of the object is acquired any calls to a |
| * Dart API function that could potentially allocate an object or run |
| * any Dart code will return an error. |
| * |
| * Any Dart API functions for accessing the data should not be called |
| * before the corresponding release. In particular, the object should |
| * not be acquired again before its release. This leads to undefined |
| * behavior. |
| * |
| * \return Success if the internal data address is acquired successfully. |
| * Otherwise, returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_TypedDataAcquireData(Dart_Handle object, |
| Dart_TypedData_Type* type, |
| void** data, |
| intptr_t* len); |
| |
| /** |
| * Releases access to the internal data address that was acquired earlier using |
| * Dart_TypedDataAcquireData. |
| * |
| * \param object The typed data object whose internal data address is to be |
| * released. |
| * |
| * \return Success if the internal data address is released successfully. |
| * Otherwise, returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_TypedDataReleaseData(Dart_Handle object); |
| |
| /** |
| * Returns the TypedData object associated with the ByteBuffer object. |
| * |
| * \param byte_buffer The ByteBuffer object. |
| * |
| * \return The TypedData object if no error occurs. Otherwise returns |
| * an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetDataFromByteBuffer(Dart_Handle byte_buffer); |
| |
| |
| /* |
| * ============================================================ |
| * Invoking Constructors, Methods, Closures and Field accessors |
| * ============================================================ |
| */ |
| |
| /** |
| * Invokes a constructor, creating a new object. |
| * |
| * This function allows hidden constructors (constructors with leading |
| * underscores) to be called. |
| * |
| * \param type Type of object to be constructed. |
| * \param constructor_name The name of the constructor to invoke. Use |
| * Dart_Null() or Dart_EmptyString() to invoke the unnamed constructor. |
| * This name should not include the name of the class. |
| * \param number_of_arguments Size of the arguments array. |
| * \param arguments An array of arguments to the constructor. |
| * |
| * \return If the constructor is called and completes successfully, |
| * then the new object. If an error occurs during execution, then an |
| * error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_New(Dart_Handle type, |
| Dart_Handle constructor_name, |
| int number_of_arguments, |
| Dart_Handle* arguments); |
| |
| /** |
| * Allocate a new object without invoking a constructor. |
| * |
| * \param type The type of an object to be allocated. |
| * |
| * \return The new object. If an error occurs during execution, then an |
| * error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_Allocate(Dart_Handle type); |
| |
| /** |
| * Allocate a new object without invoking a constructor, and sets specified |
| * native fields. |
| * |
| * \param type The type of an object to be allocated. |
| * \param num_native_fields The number of native fields to set. |
| * \param native_fields An array containing the value of native fields. |
| * |
| * \return The new object. If an error occurs during execution, then an |
| * error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_AllocateWithNativeFields(Dart_Handle type, |
| intptr_t num_native_fields, |
| const intptr_t* native_fields); |
| |
| /** |
| * Invokes a method or function. |
| * |
| * The 'target' parameter may be an object, type, or library. If |
| * 'target' is an object, then this function will invoke an instance |
| * method. If 'target' is a type, then this function will invoke a |
| * static method. If 'target' is a library, then this function will |
| * invoke a top-level function from that library. |
| * NOTE: This API call cannot be used to invoke methods of a type object. |
| * |
| * This function ignores visibility (leading underscores in names). |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param target An object, type, or library. |
| * \param name The name of the function or method to invoke. |
| * \param number_of_arguments Size of the arguments array. |
| * \param arguments An array of arguments to the function. |
| * |
| * \return If the function or method is called and completes |
| * successfully, then the return value is returned. If an error |
| * occurs during execution, then an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_Invoke(Dart_Handle target, |
| Dart_Handle name, |
| int number_of_arguments, |
| Dart_Handle* arguments); |
| /* TODO(turnidge): Document how to invoke operators. */ |
| |
| /** |
| * Invokes a Closure with the given arguments. |
| * |
| * May generate an unhandled exception error. |
| * |
| * \return If no error occurs during execution, then the result of |
| * invoking the closure is returned. If an error occurs during |
| * execution, then an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_InvokeClosure(Dart_Handle closure, |
| int number_of_arguments, |
| Dart_Handle* arguments); |
| |
| /** |
| * Invokes a Generative Constructor on an object that was previously |
| * allocated using Dart_Allocate/Dart_AllocateWithNativeFields. |
| * |
| * The 'target' parameter must be an object. |
| * |
| * This function ignores visibility (leading underscores in names). |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param target An object. |
| * \param name The name of the constructor to invoke. |
| * Use Dart_Null() or Dart_EmptyString() to invoke the unnamed constructor. |
| * \param number_of_arguments Size of the arguments array. |
| * \param arguments An array of arguments to the function. |
| * |
| * \return If the constructor is called and completes |
| * successfully, then the object is returned. If an error |
| * occurs during execution, then an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_InvokeConstructor(Dart_Handle object, |
| Dart_Handle name, |
| int number_of_arguments, |
| Dart_Handle* arguments); |
| |
| /** |
| * Gets the value of a field. |
| * |
| * The 'container' parameter may be an object, type, or library. If |
| * 'container' is an object, then this function will access an |
| * instance field. If 'container' is a type, then this function will |
| * access a static field. If 'container' is a library, then this |
| * function will access a top-level variable. |
| * NOTE: This API call cannot be used to access fields of a type object. |
| * |
| * This function ignores field visibility (leading underscores in names). |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param container An object, type, or library. |
| * \param name A field name. |
| * |
| * \return If no error occurs, then the value of the field is |
| * returned. Otherwise an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetField(Dart_Handle container, Dart_Handle name); |
| |
| /** |
| * Sets the value of a field. |
| * |
| * The 'container' parameter may actually be an object, type, or |
| * library. If 'container' is an object, then this function will |
| * access an instance field. If 'container' is a type, then this |
| * function will access a static field. If 'container' is a library, |
| * then this function will access a top-level variable. |
| * NOTE: This API call cannot be used to access fields of a type object. |
| * |
| * This function ignores field visibility (leading underscores in names). |
| * |
| * May generate an unhandled exception error. |
| * |
| * \param container An object, type, or library. |
| * \param name A field name. |
| * \param value The new field value. |
| * |
| * \return A valid handle if no error occurs. |
| */ |
| DART_EXPORT Dart_Handle Dart_SetField(Dart_Handle container, |
| Dart_Handle name, |
| Dart_Handle value); |
| |
| |
| /* |
| * ========== |
| * Exceptions |
| * ========== |
| */ |
| |
| /* |
| * TODO(turnidge): Remove these functions from the api and replace all |
| * uses with Dart_NewUnhandledExceptionError. */ |
| |
| /** |
| * Throws an exception. |
| * |
| * This function causes a Dart language exception to be thrown. This |
| * will proceed in the standard way, walking up Dart frames until an |
| * appropriate 'catch' block is found, executing 'finally' blocks, |
| * etc. |
| * |
| * If an error handle is passed into this function, the error is |
| * propagated immediately. See Dart_PropagateError for a discussion |
| * of error propagation. |
| * |
| * If successful, this function does not return. Note that this means |
| * that the destructors of any stack-allocated C++ objects will not be |
| * called. If there are no Dart frames on the stack, an error occurs. |
| * |
| * \return An error handle if the exception was not thrown. |
| * Otherwise the function does not return. |
| */ |
| DART_EXPORT Dart_Handle Dart_ThrowException(Dart_Handle exception); |
| |
| /** |
| * Rethrows an exception. |
| * |
| * Rethrows an exception, unwinding all dart frames on the stack. If |
| * successful, this function does not return. Note that this means |
| * that the destructors of any stack-allocated C++ objects will not be |
| * called. If there are no Dart frames on the stack, an error occurs. |
| * |
| * \return An error handle if the exception was not thrown. |
| * Otherwise the function does not return. |
| */ |
| DART_EXPORT Dart_Handle Dart_RethrowException(Dart_Handle exception, |
| Dart_Handle stacktrace); |
| |
| |
| /* |
| * =========================== |
| * Native fields and functions |
| * =========================== |
| */ |
| |
| /** |
| * Creates a native wrapper class. |
| * |
| * TODO(turnidge): Document. |
| */ |
| DART_EXPORT Dart_Handle Dart_CreateNativeWrapperClass(Dart_Handle library, |
| Dart_Handle class_name, |
| int field_count); |
| |
| /** |
| * Gets the number of native instance fields in an object. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeInstanceFieldCount(Dart_Handle obj, |
| int* count); |
| |
| /** |
| * Gets the value of a native field. |
| * |
| * TODO(turnidge): Document. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeInstanceField(Dart_Handle obj, |
| int index, |
| intptr_t* value); |
| |
| /** |
| * Sets the value of a native field. |
| * |
| * TODO(turnidge): Document. |
| */ |
| DART_EXPORT Dart_Handle Dart_SetNativeInstanceField(Dart_Handle obj, |
| int index, |
| intptr_t value); |
| |
| /** |
| * The arguments to a native function. |
| * |
| * This object is passed to a native function to represent its |
| * arguments and return value. It allows access to the arguments to a |
| * native function by index. It also allows the return value of a |
| * native function to be set. |
| */ |
| typedef struct _Dart_NativeArguments* Dart_NativeArguments; |
| |
| /** |
| * Extracts current isolate data from the native arguments structure. |
| */ |
| DART_EXPORT void* Dart_GetNativeIsolateData(Dart_NativeArguments args); |
| |
| typedef enum { |
| Dart_NativeArgument_kBool = 0, |
| Dart_NativeArgument_kInt32, |
| Dart_NativeArgument_kUint32, |
| Dart_NativeArgument_kInt64, |
| Dart_NativeArgument_kUint64, |
| Dart_NativeArgument_kDouble, |
| Dart_NativeArgument_kString, |
| Dart_NativeArgument_kInstance, |
| Dart_NativeArgument_kNativeFields, |
| } Dart_NativeArgument_Type; |
| |
| typedef struct _Dart_NativeArgument_Descriptor { |
| uint8_t type; |
| uint8_t index; |
| } Dart_NativeArgument_Descriptor; |
| |
| typedef union _Dart_NativeArgument_Value { |
| bool as_bool; |
| int32_t as_int32; |
| uint32_t as_uint32; |
| int64_t as_int64; |
| uint64_t as_uint64; |
| double as_double; |
| struct { |
| Dart_Handle dart_str; |
| void* peer; |
| } as_string; |
| struct { |
| intptr_t num_fields; |
| intptr_t* values; |
| } as_native_fields; |
| Dart_Handle as_instance; |
| } Dart_NativeArgument_Value; |
| |
| enum { |
| kNativeArgNumberPos = 0, |
| kNativeArgNumberSize = 8, |
| kNativeArgTypePos = kNativeArgNumberPos + kNativeArgNumberSize, |
| kNativeArgTypeSize = 8, |
| }; |
| |
| #define BITMASK(size) ((1 << size) - 1) |
| #define DART_NATIVE_ARG_DESCRIPTOR(type, position) \ |
| (((type & BITMASK(kNativeArgTypeSize)) << kNativeArgTypePos) | \ |
| (position & BITMASK(kNativeArgNumberSize))) |
| |
| /** |
| * Gets the native arguments based on the types passed in and populates |
| * the passed arguments buffer with appropriate native values. |
| * |
| * \param args the Native arguments block passed into the native call. |
| * \param num_arguments length of argument descriptor array and argument |
| * values array passed in. |
| * \param arg_descriptors an array that describes the arguments that |
| * need to be retrieved. For each argument to be retrieved the descriptor |
| * contains the argument number (0, 1 etc.) and the argument type |
| * described using Dart_NativeArgument_Type, e.g: |
| * DART_NATIVE_ARG_DESCRIPTOR(Dart_NativeArgument_kBool, 1) indicates |
| * that the first argument is to be retrieved and it should be a boolean. |
| * \param arg_values array into which the native arguments need to be |
| * extracted into, the array is allocated by the caller (it could be |
| * stack allocated to avoid the malloc/free performance overhead). |
| * |
| * \return Success if all the arguments could be extracted correctly, |
| * returns an error handle if there were any errors while extracting the |
| * arguments (mismatched number of arguments, incorrect types, etc.). |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_GetNativeArguments(Dart_NativeArguments args, |
| int num_arguments, |
| const Dart_NativeArgument_Descriptor* arg_descriptors, |
| Dart_NativeArgument_Value* arg_values); |
| |
| |
| /** |
| * Gets the native argument at some index. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeArgument(Dart_NativeArguments args, |
| int index); |
| /* TODO(turnidge): Specify the behavior of an out-of-bounds access. */ |
| |
| /** |
| * Gets the number of native arguments. |
| */ |
| DART_EXPORT int Dart_GetNativeArgumentCount(Dart_NativeArguments args); |
| |
| /** |
| * Gets all the native fields of the native argument at some index. |
| * \param args Native arguments structure. |
| * \param arg_index Index of the desired argument in the structure above. |
| * \param num_fields size of the intptr_t array 'field_values' passed in. |
| * \param field_values intptr_t array in which native field values are returned. |
| * \return Success if the native fields where copied in successfully. Otherwise |
| * returns an error handle. On success the native field values are copied |
| * into the 'field_values' array, if the argument at 'arg_index' is a |
| * null object then 0 is copied as the native field values into the |
| * 'field_values' array. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_GetNativeFieldsOfArgument(Dart_NativeArguments args, |
| int arg_index, |
| int num_fields, |
| intptr_t* field_values); |
| |
| /** |
| * Gets the native field of the receiver. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeReceiver(Dart_NativeArguments args, |
| intptr_t* value); |
| |
| /** |
| * Gets a string native argument at some index. |
| * \param args Native arguments structure. |
| * \param arg_index Index of the desired argument in the structure above. |
| * \param peer Returns the peer pointer if the string argument has one. |
| * \return Success if the string argument has a peer, if it does not |
| * have a peer then the String object is returned. Otherwise returns |
| * an error handle (argument is not a String object). |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeStringArgument(Dart_NativeArguments args, |
| int arg_index, |
| void** peer); |
| |
| /** |
| * Gets an integer native argument at some index. |
| * \param args Native arguments structure. |
| * \param arg_index Index of the desired argument in the structure above. |
| * \param value Returns the integer value if the argument is an Integer. |
| * \return Success if no error occurs. Otherwise returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeIntegerArgument(Dart_NativeArguments args, |
| int index, |
| int64_t* value); |
| |
| /** |
| * Gets a boolean native argument at some index. |
| * \param args Native arguments structure. |
| * \param arg_index Index of the desired argument in the structure above. |
| * \param value Returns the boolean value if the argument is a Boolean. |
| * \return Success if no error occurs. Otherwise returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeBooleanArgument(Dart_NativeArguments args, |
| int index, |
| bool* value); |
| |
| /** |
| * Gets a double native argument at some index. |
| * \param args Native arguments structure. |
| * \param arg_index Index of the desired argument in the structure above. |
| * \param value Returns the double value if the argument is a double. |
| * \return Success if no error occurs. Otherwise returns an error handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeDoubleArgument(Dart_NativeArguments args, |
| int index, |
| double* value); |
| |
| /** |
| * Sets the return value for a native function. |
| * |
| * If retval is an Error handle, then error will be propagated once |
| * the native functions exits. See Dart_PropagateError for a |
| * discussion of how different types of errors are propagated. |
| */ |
| DART_EXPORT void Dart_SetReturnValue(Dart_NativeArguments args, |
| Dart_Handle retval); |
| |
| DART_EXPORT void Dart_SetWeakHandleReturnValue(Dart_NativeArguments args, |
| Dart_WeakPersistentHandle rval); |
| |
| DART_EXPORT void Dart_SetBooleanReturnValue(Dart_NativeArguments args, |
| bool retval); |
| |
| DART_EXPORT void Dart_SetIntegerReturnValue(Dart_NativeArguments args, |
| int64_t retval); |
| |
| DART_EXPORT void Dart_SetDoubleReturnValue(Dart_NativeArguments args, |
| double retval); |
| |
| /** |
| * A native function. |
| */ |
| typedef void (*Dart_NativeFunction)(Dart_NativeArguments arguments); |
| |
| /** |
| * Native entry resolution callback. |
| * |
| * For libraries and scripts which have native functions, the embedder |
| * can provide a native entry resolver. This callback is used to map a |
| * name/arity to a Dart_NativeFunction. If no function is found, the |
| * callback should return NULL. |
| * |
| * The parameters to the native resolver function are: |
| * \param name a Dart string which is the name of the native function. |
| * \param num_of_arguments is the number of arguments expected by the |
| * native function. |
| * \param auto_setup_scope is a boolean flag that can be set by the resolver |
| * to indicate if this function needs a Dart API scope (see Dart_EnterScope/ |
| * Dart_ExitScope) to be setup automatically by the VM before calling into |
| * the native function. By default most native functions would require this |
| * to be true but some light weight native functions which do not call back |
| * into the VM through the Dart API may not require a Dart scope to be |
| * setup automatically. |
| * |
| * \return A valid Dart_NativeFunction which resolves to a native entry point |
| * for the native function. |
| * |
| * See Dart_SetNativeResolver. |
| */ |
| typedef Dart_NativeFunction (*Dart_NativeEntryResolver)(Dart_Handle name, |
| int num_of_arguments, |
| bool* auto_setup_scope); |
| /* TODO(turnidge): Consider renaming to NativeFunctionResolver or |
| * NativeResolver. */ |
| |
| /** |
| * Native entry symbol lookup callback. |
| * |
| * For libraries and scripts which have native functions, the embedder |
| * can provide a callback for mapping a native entry to a symbol. This callback |
| * maps a native function entry PC to the native function name. If no native |
| * entry symbol can be found, the callback should return NULL. |
| * |
| * The parameters to the native reverse resolver function are: |
| * \param nf A Dart_NativeFunction. |
| * |
| * \return A const UTF-8 string containing the symbol name or NULL. |
| * |
| * See Dart_SetNativeResolver. |
| */ |
| typedef const uint8_t* (*Dart_NativeEntrySymbol)(Dart_NativeFunction nf); |
| |
| |
| /* |
| * =========== |
| * Environment |
| * =========== |
| */ |
| |
| /** |
| * An environment lookup callback function. |
| * |
| * \param name The name of the value to lookup in the environment. |
| * |
| * \return A valid handle to a string if the name exists in the |
| * current environment or Dart_Null() if not. |
| */ |
| typedef Dart_Handle (*Dart_EnvironmentCallback)(Dart_Handle name); |
| |
| /** |
| * Sets the environment callback for the current isolate. This |
| * callback is used to lookup environment values by name in the |
| * current environment. This enables the embedder to supply values for |
| * the const constructors bool.fromEnvironment, int.fromEnvironment |
| * and String.fromEnvironment. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_SetEnvironmentCallback(Dart_EnvironmentCallback callback); |
| |
| /** |
| * Sets the callback used to resolve native functions for a library. |
| * |
| * \param library A library. |
| * \param resolver A native entry resolver. |
| * |
| * \return A valid handle if the native resolver was set successfully. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_SetNativeResolver(Dart_Handle library, |
| Dart_NativeEntryResolver resolver, |
| Dart_NativeEntrySymbol symbol); |
| /* TODO(turnidge): Rename to Dart_LibrarySetNativeResolver? */ |
| |
| |
| /** |
| * Returns the callback used to resolve native functions for a library. |
| * |
| * \param library A library. |
| * \param resolver a pointer to a Dart_NativeEntryResolver |
| * |
| * \return A valid handle if the library was found. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_GetNativeResolver(Dart_Handle library, Dart_NativeEntryResolver* resolver); |
| |
| |
| /** |
| * Returns the callback used to resolve native function symbols for a library. |
| * |
| * \param library A library. |
| * \param resolver a pointer to a Dart_NativeEntrySymbol. |
| * |
| * \return A valid handle if the library was found. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetNativeSymbol(Dart_Handle library, |
| Dart_NativeEntrySymbol* resolver); |
| |
| |
| /* |
| * ===================== |
| * Scripts and Libraries |
| * ===================== |
| */ |
| |
| typedef enum { |
| Dart_kCanonicalizeUrl = 0, |
| Dart_kScriptTag, |
| Dart_kSourceTag, |
| Dart_kImportTag, |
| } Dart_LibraryTag; |
| |
| /** |
| * The library tag handler is a multi-purpose callback provided by the |
| * embedder to the Dart VM. The embedder implements the tag handler to |
| * provide the ability to load Dart scripts and imports. |
| * |
| * -- TAGS -- |
| * |
| * Dart_kCanonicalizeUrl |
| * |
| * This tag indicates that the embedder should canonicalize 'url' with |
| * respect to 'library'. For most embedders, the |
| * Dart_DefaultCanonicalizeUrl function is a sufficient implementation |
| * of this tag. The return value should be a string holding the |
| * canonicalized url. |
| * |
| * Dart_kScriptTag |
| * |
| * This tag indicates that the root script should be loaded from |
| * 'url'. If the 'library' parameter is not null, it is the url of the |
| * package map that should be used when loading. Once the root |
| * script is loaded, the embedder should call Dart_LoadScript to |
| * install the root script in the VM. The return value should be an |
| * error or null. |
| * |
| * Dart_kSourceTag |
| * |
| * This tag is used to load a file referenced by Dart language "part |
| * of" directive. Once the file's source is loaded, the embedder |
| * should call Dart_LoadSource to provide the file contents to the VM. |
| * The return value should be an error or null. |
| * |
| * Dart_kImportTag |
| * |
| * This tag is used to load a script referenced by Dart language |
| * "import" directive. Once the script is loaded, the embedder should |
| * call Dart_LoadLibrary to provide the script source to the VM. The |
| * return value should be an error or null. |
| */ |
| typedef Dart_Handle (*Dart_LibraryTagHandler)( |
| Dart_LibraryTag tag, |
| Dart_Handle library_or_package_map_url, |
| Dart_Handle url); |
| |
| /** |
| * Sets library tag handler for the current isolate. This handler is |
| * used to handle the various tags encountered while loading libraries |
| * or scripts in the isolate. |
| * |
| * \param handler Handler code to be used for handling the various tags |
| * encountered while loading libraries or scripts in the isolate. |
| * |
| * \return If no error occurs, the handler is set for the isolate. |
| * Otherwise an error handle is returned. |
| * |
| * TODO(turnidge): Document. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_SetLibraryTagHandler(Dart_LibraryTagHandler handler); |
| |
| /** |
| * Canonicalizes a url with respect to some library. |
| * |
| * The url is resolved with respect to the library's url and some url |
| * normalizations are performed. |
| * |
| * This canonicalization function should be sufficient for most |
| * embedders to implement the Dart_kCanonicalizeUrl tag. |
| * |
| * \param base_url The base url relative to which the url is |
| * being resolved. |
| * \param url The url being resolved and canonicalized. This |
| * parameter is a string handle. |
| * |
| * \return If no error occurs, a String object is returned. Otherwise |
| * an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_DefaultCanonicalizeUrl(Dart_Handle base_url, |
| Dart_Handle url); |
| |
| /** |
| * Called by the embedder to provide the source for the root script to |
| * the VM. This function should be called in response to a |
| * Dart_kScriptTag tag handler request (See Dart_LibraryTagHandler, |
| * above). |
| * |
| * \param url The original url requested for the script. |
| * |
| * \param resolved_url The actual url which was loaded. This parameter |
| * is optionally provided to support isolate reloading. A value of |
| * Dart_Null() indicates that the resolved url was the same as the |
| * requested url. |
| * |
| * \param source The contents of the url. |
| * |
| * \param line_offset is the number of text lines before the |
| * first line of the Dart script in the containing file. |
| * |
| * \param col_offset is the number of characters before the first character |
| * in the first line of the Dart script. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_LoadScript(Dart_Handle url, |
| Dart_Handle resolved_url, |
| Dart_Handle source, |
| intptr_t line_offset, |
| intptr_t col_offset); |
| |
| /** |
| * Loads the root script for current isolate from a script snapshot. The |
| * snapshot must have been created by Dart_CreateScriptSnapshot from a VM with |
| * the same version. |
| * |
| * \param buffer A buffer which contains a snapshot of the script. |
| * \param buffer_len Length of the passed in buffer. |
| * |
| * \return If no error occurs, the Library object corresponding to the root |
| * script is returned. Otherwise an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_LoadScriptFromSnapshot(const uint8_t* buffer, |
| intptr_t buffer_len); |
| |
| /** |
| * Loads a dart application via an in-memory kernel program. |
| * |
| * \param kernel_program The kernel program obtained via |
| * `Dart_ReadKernelBinary`. |
| * |
| * The VM will take ownership of the `kernel_program` object. |
| * |
| * \return If no error occurs, the Library object corresponding to the root |
| * script is returned. Otherwise an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_LoadKernel(void* kernel_program); |
| |
| |
| /** |
| * Constructs an in-memory kernel program form a binary. |
| * |
| * \param buffer The start of a memory buffer containing the binary format. |
| * \param buffer_len The length of the memory buffer. |
| * |
| * \return kernel_program The `dart::kernel::Program` object. |
| */ |
| DART_EXPORT void* Dart_ReadKernelBinary(const uint8_t* buffer, |
| intptr_t buffer_len); |
| |
| /** |
| * Gets the library for the root script for the current isolate. |
| * |
| * If the root script has not yet been set for the current isolate, |
| * this function returns Dart_Null(). This function never returns an |
| * error handle. |
| * |
| * \return Returns the root Library for the current isolate or Dart_Null(). |
| */ |
| DART_EXPORT Dart_Handle Dart_RootLibrary(); |
| |
| |
| /** |
| * Sets the root library for the current isolate. |
| * |
| * \return Returns an error handle if `library` is not a library handle. |
| */ |
| DART_EXPORT Dart_Handle Dart_SetRootLibrary(Dart_Handle library); |
| |
| |
| /** |
| * Lookup or instantiate a type by name and type arguments from a Library. |
| * |
| * \param library The library containing the class or interface. |
| * \param class_name The class name for the type. |
| * \param number_of_type_arguments Number of type arguments. |
| * For non parametric types the number of type arguments would be 0. |
| * \param type_arguments Pointer to an array of type arguments. |
| * For non parameteric types a NULL would be passed in for this argument. |
| * |
| * \return If no error occurs, the type is returned. |
| * Otherwise an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetType(Dart_Handle library, |
| Dart_Handle class_name, |
| intptr_t number_of_type_arguments, |
| Dart_Handle* type_arguments); |
| |
| /** |
| * Lookup a class or interface by name from a Library. |
| * |
| * \param library The library containing the class or interface. |
| * \param class_name The name of the class or interface. |
| * |
| * \return If no error occurs, the class or interface is |
| * returned. Otherwise an error handle is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetClass(Dart_Handle library, |
| Dart_Handle class_name); |
| /* TODO(asiva): The above method needs to be removed once all uses |
| * of it are removed from the embedder code. */ |
| |
| /** |
| * Returns the url from which a library was loaded. |
| */ |
| DART_EXPORT Dart_Handle Dart_LibraryUrl(Dart_Handle library); |
| |
| |
| /** |
| * \return An array of libraries. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetLoadedLibraries(); |
| |
| |
| DART_EXPORT Dart_Handle Dart_LookupLibrary(Dart_Handle url); |
| /* TODO(turnidge): Consider returning Dart_Null() when the library is |
| * not found to distinguish that from a true error case. */ |
| |
| |
| /** |
| * Report an loading error for the library. |
| * |
| * \param library The library that failed to load. |
| * \param error The Dart error instance containing the load error. |
| * |
| * \return If the VM handles the error, the return value is |
| * a null handle. If it doesn't handle the error, the error |
| * object is returned. |
| */ |
| DART_EXPORT Dart_Handle Dart_LibraryHandleError(Dart_Handle library, |
| Dart_Handle error); |
| |
| |
| /** |
| * Called by the embedder to provide the source for an "import" |
| * directive. This function should be called in response to a |
| * Dart_kImportTag tag handler request (See Dart_LibraryTagHandler, |
| * above). |
| * |
| * \param library The library where the "import" directive occurs. |
| * |
| * \param url The original url requested for the import. |
| * |
| * \param resolved_url The actual url which was loaded. This parameter |
| * is optionally provided to support isolate reloading. A value of |
| * Dart_Null() indicates that the resolved url was the same as the |
| * requested url. |
| * |
| * \param source The contents of the url. |
| * |
| * \param line_offset is the number of text lines before the |
| * first line of the Dart script in the containing file. |
| * |
| * \param col_offset is the number of characters before the first character |
| * in the first line of the Dart script. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_LoadLibrary(Dart_Handle url, |
| Dart_Handle resolved_url, |
| Dart_Handle source, |
| intptr_t line_offset, |
| intptr_t column_offset); |
| |
| /** |
| * Imports a library into another library, optionally with a prefix. |
| * If no prefix is required, an empty string or Dart_Null() can be |
| * supplied. |
| * |
| * \param library The library into which to import another library. |
| * \param import The library to import. |
| * \param prefix The prefix under which to import. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_LibraryImportLibrary(Dart_Handle library, |
| Dart_Handle import, |
| Dart_Handle prefix); |
| |
| |
| /** |
| * Returns a flattened list of pairs. The first element in each pair is the |
| * importing library and and the second element is the imported library for each |
| * import in the isolate of a library whose URI's scheme is [scheme]. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \return A handle to a list of flattened pairs of importer-importee. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetImportsOfScheme(Dart_Handle scheme); |
| |
| |
| /** |
| * Called by the embedder to provide the source for a "part of" |
| * directive. This function should be called in response to a |
| * Dart_kSourceTag tag handler request (See Dart_LibraryTagHandler, |
| * above). |
| * |
| * \param library The library where the "part of" directive occurs. |
| * |
| * \param url The original url requested for the part. |
| * |
| * \param resolved_url The actual url which was loaded. This parameter |
| * is optionally provided to support isolate reloading. A value of |
| * Dart_Null() indicates that the resolved url was the same as the |
| * requested url. |
| * |
| * \param source The contents of the url. |
| * |
| * \param line_offset is the number of text lines before the |
| * first line of the Dart script in the containing file. |
| * |
| * \param col_offset is the number of characters before the first character |
| * in the first line of the Dart script. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle Dart_LoadSource(Dart_Handle library, |
| Dart_Handle url, |
| Dart_Handle resolved_url, |
| Dart_Handle source, |
| intptr_t line_offset, |
| intptr_t column_offset); |
| /* TODO(turnidge): Rename to Dart_LibraryLoadSource? */ |
| |
| |
| /** |
| * Loads a patch source string into a library. |
| * |
| * \param library A library |
| * \param url A url identifying the origin of the patch source |
| * \param source A string of Dart patch source |
| */ |
| DART_EXPORT Dart_Handle Dart_LibraryLoadPatch(Dart_Handle library, |
| Dart_Handle url, |
| Dart_Handle patch_source); |
| |
| |
| /** |
| * Indicates that all outstanding load requests have been satisfied. |
| * This finalizes all the new classes loaded and optionally completes |
| * deferred library futures. |
| * |
| * Requires there to be a current isolate. |
| * |
| * \param complete_futures Specify true if all deferred library |
| * futures should be completed, false otherwise. |
| * |
| * \return Success if all classes have been finalized and deferred library |
| * futures are completed. Otherwise, returns an error. |
| */ |
| DART_EXPORT Dart_Handle Dart_FinalizeLoading(bool complete_futures); |
| |
| |
| /* |
| * ===== |
| * Peers |
| * ===== |
| */ |
| |
| /** |
| * The peer field is a lazily allocated field intendend for storage of |
| * an uncommonly used values. Most instances types can have a peer |
| * field allocated. The exceptions are subtypes of Null, num, and |
| * bool. |
| */ |
| |
| /** |
| * Returns the value of peer field of 'object' in 'peer'. |
| * |
| * \param object An object. |
| * \param peer An out parameter that returns the value of the peer |
| * field. |
| * |
| * \return Returns an error if 'object' is a subtype of Null, num, or |
| * bool. |
| */ |
| DART_EXPORT Dart_Handle Dart_GetPeer(Dart_Handle object, void** peer); |
| |
| /** |
| * Sets the value of the peer field of 'object' to the value of |
| * 'peer'. |
| * |
| * \param object An object. |
| * \param peer A value to store in the peer field. |
| * |
| * \return Returns an error if 'object' is a subtype of Null, num, or |
| * bool. |
| */ |
| DART_EXPORT Dart_Handle Dart_SetPeer(Dart_Handle object, void* peer); |
| |
| |
| /* |
| * ======= |
| * Service |
| * ======= |
| */ |
| |
| |
| #define DART_VM_SERVICE_ISOLATE_NAME "vm-service" |
| |
| /** |
| * Returns true if isolate is the service isolate. |
| * |
| * \param isolate An isolate |
| * |
| * \return Returns true if 'isolate' is the service isolate. |
| */ |
| DART_EXPORT bool Dart_IsServiceIsolate(Dart_Isolate isolate); |
| |
| |
| /** |
| * Returns the port that script load requests should be sent on. |
| * |
| * \return Returns the port for load requests or ILLEGAL_PORT if the service |
| * isolate failed to startup or does not support load requests. |
| */ |
| DART_EXPORT Dart_Port Dart_ServiceWaitForLoadPort(); |
| |
| |
| /* |
| * ============== |
| * Precompilation |
| * ============== |
| */ |
| |
| |
| typedef struct { |
| const char* library_uri; |
| const char* class_name; |
| const char* function_name; |
| } Dart_QualifiedFunctionName; |
| |
| |
| /** |
| * Compiles all functions reachable from the provided entry points and marks |
| * the isolate to disallow future compilation. |
| * |
| * \param entry_points A list of functions that may be invoked through the |
| * embedding API, e.g. Dart_Invoke/GetField/SetField/New/InvokeClosure. |
| * |
| * \param reset_fields Controls whether static fields are reset. Fields without |
| * an initializer will be set to null, and fields with an initializer will have |
| * their initializer run the next time they are accessed. |
| * |
| * reset_fields is true when we are about to create a precompilated snapshot. |
| * Some fields are already been initialized as part of the loading logic, and |
| * we want them to be reinitialized in the new process that will load the |
| * snapshot. reset_fields is false for --noopt, which will continue running in |
| * the same process. |
| * |
| * \return An error handle if a compilation error or runtime error running const |
| * constructors was encountered. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_Precompile(Dart_QualifiedFunctionName entry_points[], bool reset_fields); |
| |
| |
| /** |
| * Creates a precompiled snapshot. |
| * - A root library must have been loaded. |
| * - Dart_Precompile must have been called. |
| * |
| * Outputs a vm isolate snapshot, an isolate snapshot, and an assembly file |
| * defining the symbols kInstructionsSnapshot and kDataSnapshot. The assembly |
| * should be compiled as a static or shared library and linked or loaded by the |
| * embedder. |
| * Running this snapshot requires a VM compiled with DART_PRECOMPILED_SNAPSHOT. |
| * The vm isolate snapshot, kInstructionsSnapshot and kDataSnapshot should be |
| * passed as arguments to Dart_Initialize. The isolate snapshot should be |
| * passed to Dart_CreateIsolate. |
| * |
| * The buffers are scope allocated and are only valid until the next call to |
| * Dart_ExitScope. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_CreatePrecompiledSnapshotAssembly(uint8_t** assembly_buffer, |
| intptr_t* assembly_size); |
| |
| |
| /** |
| * Same as Dart_CreatePrecompiledSnapshotAssembly, except the instruction and |
| * data snapshot pieces are provided directly as bytes that the embedder can |
| * load with mmap. The instructions piece must be loaded with read and |
| * execute permissions; the rodata piece may be loaded as read-only. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_CreatePrecompiledSnapshotBlob(uint8_t** vm_isolate_snapshot_buffer, |
| intptr_t* vm_isolate_snapshot_size, |
| uint8_t** isolate_snapshot_buffer, |
| intptr_t* isolate_snapshot_size, |
| uint8_t** instructions_blob_buffer, |
| intptr_t* instructions_blob_size, |
| uint8_t** rodata_blob_buffer, |
| intptr_t* rodata_blob_size); |
| |
| |
| DART_EXPORT Dart_Handle Dart_PrecompileJIT(); |
| |
| |
| /** |
| * Creates a snapshot that caches unoptimized code and type feedback for faster |
| * startup and quicker warmup in a subsequent process. |
| * |
| * Outputs a snapshot in four pieces. The vm isolate snapshot, |
| * instructions_blob and rodata_blob should be passed as arguments to |
| * Dart_Initialize. The isolate snapshot should be passed to |
| * Dart_CreateIsolate. The instructions piece must be loaded with execute |
| * permissions; the other pieces may loaded as read-only. |
| * |
| * - Requires the VM to have been started with --load-deferred-eagerly. |
| * - Requires the VM to have not been started with --precompilation. |
| * - Not supported when targeting IA32. |
| * - The VM writing the snapshot and the VM reading the snapshot must be the |
| * same version, must be built in the same DEBUG/RELEASE/PRODUCT mode, must |
| * be targeting the same architecture, and must both be in checked mode or |
| * both in unchecked mode. |
| * |
| * The buffers are scope allocated and are only valid until the next call to |
| * Dart_ExitScope. |
| * |
| * \return A valid handle if no error occurs during the operation. |
| */ |
| DART_EXPORT Dart_Handle |
| Dart_CreateAppJITSnapshot(uint8_t** vm_isolate_snapshot_buffer, |
| intptr_t* vm_isolate_snapshot_size, |
| uint8_t** isolate_snapshot_buffer, |
| intptr_t* isolate_snapshot_size, |
| uint8_t** instructions_blob_buffer, |
| intptr_t* instructions_blob_size, |
| uint8_t** rodata_blob_buffer, |
| intptr_t* rodata_blob_size); |
| |
| |
| /** |
| * Returns whether the VM only supports running from precompiled snapshots and |
| * not from any other kind of snapshot or from source (that is, the VM was |
| * compiled with DART_PRECOMPILED_RUNTIME). |
| */ |
| DART_EXPORT bool Dart_IsPrecompiledRuntime(); |
| |
| |
| /** |
| * Print a native stack trace. Used for crash handling. |
| */ |
| DART_EXPORT void Dart_DumpNativeStackTrace(void* context); |
| |
| #endif /* INCLUDE_DART_API_H_ */ /* NOLINT */ |