mirror of
https://github.com/dart-lang/sdk
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0cbfef976d
Review URL: https://chromiumcodereview.appspot.com//10824210 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10362 260f80e4-7a28-3924-810f-c04153c831b5
165 lines
4.9 KiB
C
165 lines
4.9 KiB
C
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include <errno.h>
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#include <stdarg.h>
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#include "messaging.h"
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void postResult(Dart_Port p, bool success, int err, Dart_CObject* response) {
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DART_BOOL(wrapped_success, success);
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DART_INT32(wrapped_err, err);
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Dart_CObject* values[3];
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values[0] = &wrapped_success;
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values[1] = &wrapped_err;
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values[2] = response;
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Dart_CObject full_response;
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full_response.type = kArray;
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full_response.value.as_array.values = values;
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full_response.value.as_array.length = 3;
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Dart_PostCObject(p, &full_response);
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}
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void postError(Dart_Port p, struct archive* a) {
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DART_STRING(error_string, (char*) archive_error_string(a));
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postResult(p, false, archive_errno(a), &error_string);
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}
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void postInvalidArgument(Dart_Port p, const char* format, ...) {
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va_list args;
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char buffer[256];
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va_start(args, format);
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vsnprintf(buffer, 256, format, args);
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va_end(args);
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DART_STRING(error_string, buffer);
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postResult(p, false, EINVAL, &error_string);
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}
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void postSuccess(Dart_Port p, Dart_CObject* response) {
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if (response != NULL) {
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postResult(p, true, 0, response);
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return;
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}
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DART_NULL(null_response);
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postResult(p, true, 0, &null_response);
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}
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bool checkError(Dart_Port p, struct archive* a, int result) {
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if (result == ARCHIVE_OK) return false;
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// TODO(nweiz): What should we do about non-fatal warnings?
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if (result == ARCHIVE_WARN) return false;
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postError(p, a);
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return true;
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}
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bool checkPointerError(Dart_Port p, void* pointer, char* name) {
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if (pointer != NULL) return false;
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char buffer[100];
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snprintf(buffer, 100, "Failed to allocate memory for %s.", name);
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DART_STRING(error_string, buffer);
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postResult(p, false, ENOMEM, &error_string);
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return true;
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}
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bool checkType(Dart_Port p, Dart_CObject* object, enum Type type) {
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if (object->type == type) return false;
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postInvalidArgument(p, "Invalid argument: expected type %d, was type %d.",
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type, object->type);
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return true;
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}
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void checkResult(Dart_Port p, struct archive* a, int result) {
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if (checkError(p, a, result)) return;
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postSuccess(p, NULL);
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}
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void checkPointerResult(Dart_Port p, void* pointer, char* name) {
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if (checkPointerError(p, pointer, name)) return;
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DART_INT64(result, (intptr_t) pointer);
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postSuccess(p, &result);
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}
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Dart_CObject* getArgument(Dart_Port p, Dart_CObject* request, int i) {
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if (checkType(p, request, kArray)) return NULL;
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i += 2; // Skip over the message name and archive id.
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if (request->value.as_array.length > i) {
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return request->value.as_array.values[i];
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}
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postInvalidArgument(p, "Invalid argument: expected at least %d arguments, " \
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"were %d.", i - 2, request->value.as_array.length - 2);
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return NULL;
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}
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Dart_CObject* getTypedArgument(Dart_Port p, Dart_CObject* request, int i,
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enum Type type) {
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Dart_CObject* arg = getArgument(p, request, i);
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if (arg == NULL) return NULL;
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if (checkType(p, arg, type)) return NULL;
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return arg;
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}
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Dart_CObject* getIntArgument(Dart_Port p, Dart_CObject* request, int i) {
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Dart_CObject* arg = getArgument(p, request, i);
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if (arg == NULL) return NULL;
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if (arg->type == kInt64) return arg;
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if (arg->type == kInt32) return arg;
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postInvalidArgument(p, "Invalid argument %d: expected integer, was type %d.",
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i+1, arg->type);
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return NULL;
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}
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int64_t getInteger(Dart_CObject* object) {
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assert(object->type == kInt64 || object->type == kInt32);
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if (object->type == kInt64) return object->value.as_int64;
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if (object->type == kInt32) return (int64_t) object->value.as_int32;
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return 0; // Should never reach this point.
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}
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Dart_CObject* getNullableStringArgument(Dart_Port p, Dart_CObject* request,
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int i) {
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Dart_CObject* arg = getArgument(p, request, i);
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if (arg == NULL) return NULL;
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if (arg->type == kNull) return arg;
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if (arg->type == kString) return arg;
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postInvalidArgument(p, "Invalid argument %d: expected string or null, was " \
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"type %d.", i+1, arg->type);
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return NULL;
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}
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char* getNullableString(Dart_CObject* object) {
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assert(object->type == kNull || object->type == kString);
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if (object->type == kString) return object->value.as_string;
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return NULL;
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}
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bool getOptionArguments(Dart_Port p, Dart_CObject* request, char** module,
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char** name, char** value) {
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*module = NULL;
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*name = NULL;
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*value = NULL;
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Dart_CObject* wrappedModule = getNullableStringArgument(p, request, 0);
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if (wrappedModule == NULL) return false;
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*module = getNullableString(wrappedModule);
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Dart_CObject* wrappedName = getTypedArgument(p, request, 0, kString);
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if (wrappedName == NULL) return false;
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*name = wrappedName->value.as_string;
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Dart_CObject* wrappedValue = getNullableStringArgument(p, request, 0);
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if (wrappedValue == NULL) return false;
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*value = getNullableString(wrappedValue);
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return true;
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}
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