138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
#include "../graph.h"
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#include "../module_registry.h"
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typedef struct {
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GraphNode as_GraphNode;
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bool has_ns, has_maj, has_min, has_payload;
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EventData source;
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} AssignGraphNode;
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static bool
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handle_event(EventPositionBase * self, EventNode * event)
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{
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AssignGraphNode *node = DOWNCAST(AssignGraphNode, GraphNode, DOWNCAST(GraphNode, EventPositionBase, self));
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size_t count = node->as_GraphNode.outputs.length;
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if (!count) {
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event_destroy(event);
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return true;
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}
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if (node->has_ns) {
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event->data.code.ns = node->source.code.ns;
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}
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if (node->has_maj) {
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event->data.code.major = node->source.code.major;
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}
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if (node->has_min) {
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event->data.code.minor = node->source.code.minor;
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}
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if (node->has_payload) {
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event->data.payload = node->source.payload;
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}
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if (count > 1) {
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count = event_replicate(event, count - 1) + 1;
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}
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for (size_t i = 0; i < count; ++i) {
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event->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
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if (!event->position) {
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EventNode *orphaned = event;
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event = orphaned->prev;
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event_destroy(orphaned);
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}
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event = event->next;
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}
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return true;
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}
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static GraphNode *
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create(GraphNodeSpecification * spec, GraphNodeConfig * config, InitializationEnvironment * env)
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{
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(void) config;
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(void) env;
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AssignGraphNode * node = T_ALLOC(1, AssignGraphNode);
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if (!node) {
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return NULL;
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}
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EventData source;
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bool
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has_ns = false,
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has_maj = false,
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has_min = false,
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has_payload = false;
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const config_setting_t *setting;
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if (config->options) {
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if ((setting = config_setting_get_member(config->options, "namespace"))) {
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has_ns = true;
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source.code.ns = env_resolve_constant(env, setting);
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}
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if ((setting = config_setting_get_member(config->options, "major"))) {
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has_maj = true;
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source.code.major = env_resolve_constant(env, setting);
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}
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if ((setting = config_setting_get_member(config->options, "minor"))) {
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has_min = true;
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source.code.minor = env_resolve_constant(env, setting);
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}
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if ((setting = config_setting_get_member(config->options, "payload"))) {
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has_payload = true;
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source.payload = env_resolve_constant(env, setting);
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}
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} else {
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// Prevent warning for uninitialized variable
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source = (EventData) {
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.code = {
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.ns = 0,
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.major = 0,
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.minor = 0,
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},
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.payload = 0,
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};
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}
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*node = (AssignGraphNode) {
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.as_GraphNode = {
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.as_EventPositionBase = {
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.handle_event = &handle_event,
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.waiting_new_event = false,
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},
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.specification = spec,
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.inputs = EMPTY_GRAPH_CHANNEL_LIST,
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.outputs = EMPTY_GRAPH_CHANNEL_LIST,
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},
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.has_ns = has_ns,
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.has_maj = has_maj,
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.has_min = has_min,
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.has_payload = has_payload,
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.source = source,
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};
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return &node->as_GraphNode;
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}
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static void destroy
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(GraphNodeSpecification * self, GraphNode * target)
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{
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(void) self;
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free(target);
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}
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GraphNodeSpecification nodespec_assign = (GraphNodeSpecification) {
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.create = &create,
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.destroy = &destroy,
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.register_io = NULL,
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.name = "assign",
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.documentation = "Assigns field(s) in an event\nAccepts events on any connector\nSends events on all connectors"
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"\nOption 'namespace' (optional): new event code namespace"
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"\nOption 'major' (optional): new event code major"
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"\nOption 'minor' (optional): new event code minor"
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"\nOption 'payload' (optional): new event payload"
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,
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};
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MODULE_CONSTRUCTOR(init)
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{
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register_graph_node_specification(&nodespec_assign);
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}
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