From 640679909c31823dc03e89cce7cad43924f90cdb Mon Sep 17 00:00:00 2001 From: Olivier Matz Date: Thu, 7 Mar 2019 19:40:30 +0100 Subject: [PATCH] add ec_node_bypass --- include/ecoli_node_bypass.h | 18 +++ src/ecoli_node_bypass.c | 231 ++++++++++++++++++++++++++++++++++++ src/meson.build | 1 + 3 files changed, 250 insertions(+) create mode 100644 include/ecoli_node_bypass.h create mode 100644 src/ecoli_node_bypass.c diff --git a/include/ecoli_node_bypass.h b/include/ecoli_node_bypass.h new file mode 100644 index 0000000..a5efb46 --- /dev/null +++ b/include/ecoli_node_bypass.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2019, Olivier MATZ + */ + +/** + * A node that does nothing else than calling the child node. + * It can be helpful to build loops in a node graph. + */ + +#ifndef ECOLI_NODE_BYPASS_ +#define ECOLI_NODE_BYPASS_ + +#include + +struct ec_node *ec_node_bypass(const char *id, struct ec_node *node); +int ec_node_bypass_set_child(struct ec_node *gen_node, struct ec_node *child); + +#endif diff --git a/src/ecoli_node_bypass.c b/src/ecoli_node_bypass.c new file mode 100644 index 0000000..ba9b89c --- /dev/null +++ b/src/ecoli_node_bypass.c @@ -0,0 +1,231 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2019, Olivier MATZ + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +EC_LOG_TYPE_REGISTER(node_bypass); + +struct ec_node_bypass { + struct ec_node gen; + struct ec_node *child; +}; + +static int +ec_node_bypass_parse(const struct ec_node *gen_node, + struct ec_parse *state, + const struct ec_strvec *strvec) +{ + struct ec_node_bypass *node = (struct ec_node_bypass *)gen_node; + + return ec_node_parse_child(node->child, state, strvec); +} + +static int +ec_node_bypass_complete(const struct ec_node *gen_node, + struct ec_comp *comp, + const struct ec_strvec *strvec) +{ + struct ec_node_bypass *node = (struct ec_node_bypass *)gen_node; + + return ec_node_complete_child(node->child, comp, strvec); +} + +static void ec_node_bypass_free_priv(struct ec_node *gen_node) +{ + struct ec_node_bypass *node = (struct ec_node_bypass *)gen_node; + + ec_node_free(node->child); +} + +static size_t +ec_node_bypass_get_children_count(const struct ec_node *gen_node) +{ + struct ec_node_bypass *node = (struct ec_node_bypass *)gen_node; + + if (node->child) + return 1; + return 0; +} + +static int +ec_node_bypass_get_child(const struct ec_node *gen_node, size_t i, + struct ec_node **child, unsigned int *refs) +{ + struct ec_node_bypass *node = (struct ec_node_bypass *)gen_node; + + if (i >= 1) + return -1; + + *child = node->child; + *refs = 2; + return 0; +} + +static const struct ec_config_schema ec_node_bypass_schema[] = { + { + .key = "child", + .desc = "The child node.", + .type = EC_CONFIG_TYPE_NODE, + }, + { + .type = EC_CONFIG_TYPE_NONE, + }, +}; + +static int ec_node_bypass_set_config(struct ec_node *gen_node, + const struct ec_config *config) +{ + struct ec_node_bypass *node = (struct ec_node_bypass *)gen_node; + const struct ec_config *child; + + child = ec_config_dict_get(config, "child"); + if (child == NULL) + goto fail; + if (ec_config_get_type(child) != EC_CONFIG_TYPE_NODE) { + errno = EINVAL; + goto fail; + } + + if (node->child != NULL) + ec_node_free(node->child); + node->child = ec_node_clone(child->node); + + return 0; + +fail: + return -1; +} + +static struct ec_node_type ec_node_bypass_type = { + .name = "bypass", + .schema = ec_node_bypass_schema, + .set_config = ec_node_bypass_set_config, + .parse = ec_node_bypass_parse, + .complete = ec_node_bypass_complete, + .size = sizeof(struct ec_node_bypass), + .free_priv = ec_node_bypass_free_priv, + .get_children_count = ec_node_bypass_get_children_count, + .get_child = ec_node_bypass_get_child, +}; + +EC_NODE_TYPE_REGISTER(ec_node_bypass_type); + +int +ec_node_bypass_set_child(struct ec_node *gen_node, struct ec_node *child) +{ + const struct ec_config *cur_config = NULL; + struct ec_config *config = NULL; + int ret; + + if (ec_node_check_type(gen_node, &ec_node_bypass_type) < 0) + goto fail; + + cur_config = ec_node_get_config(gen_node); + if (cur_config == NULL) + config = ec_config_dict(); + else + config = ec_config_dup(cur_config); + if (config == NULL) + goto fail; + + if (ec_config_dict_set(config, "child", ec_config_node(child)) < 0) { + child = NULL; /* freed */ + goto fail; + } + child = NULL; /* freed */ + + ret = ec_node_set_config(gen_node, config); + config = NULL; /* freed */ + if (ret < 0) + goto fail; + + return 0; + +fail: + ec_config_free(config); + ec_node_free(child); + return -1; +} + +struct ec_node *ec_node_bypass(const char *id, struct ec_node *child) +{ + struct ec_node *gen_node = NULL; + + if (child == NULL) + goto fail; + + gen_node = ec_node_from_type(&ec_node_bypass_type, id); + if (gen_node == NULL) + goto fail; + + ec_node_bypass_set_child(gen_node, child); + child = NULL; + + return gen_node; + +fail: + ec_node_free(child); + return NULL; +} + +/* LCOV_EXCL_START */ +static int ec_node_bypass_testcase(void) +{ + struct ec_node *node; + int testres = 0; + + node = ec_node_bypass(EC_NO_ID, ec_node_str(EC_NO_ID, "foo")); + if (node == NULL) { + EC_LOG(EC_LOG_ERR, "cannot create node\n"); + return -1; + } + testres |= EC_TEST_CHECK_PARSE(node, 1, "foo"); + testres |= EC_TEST_CHECK_PARSE(node, 1, "foo", "bar"); + testres |= EC_TEST_CHECK_PARSE(node, -1, "bar"); + testres |= EC_TEST_CHECK_PARSE(node, -1); + ec_node_free(node); + + /* test completion */ + node = ec_node_bypass(EC_NO_ID, ec_node_str(EC_NO_ID, "foo")); + if (node == NULL) { + EC_LOG(EC_LOG_ERR, "cannot create node\n"); + return -1; + } + testres |= EC_TEST_CHECK_COMPLETE(node, + "", EC_NODE_ENDLIST, + "foo", EC_NODE_ENDLIST); + testres |= EC_TEST_CHECK_COMPLETE(node, + "f", EC_NODE_ENDLIST, + "foo", EC_NODE_ENDLIST); + testres |= EC_TEST_CHECK_COMPLETE(node, + "b", EC_NODE_ENDLIST, + EC_NODE_ENDLIST); + ec_node_free(node); + + return testres; +} +/* LCOV_EXCL_STOP */ + +static struct ec_test ec_node_bypass_test = { + .name = "node_bypass", + .test = ec_node_bypass_testcase, +}; + +EC_TEST_REGISTER(ec_node_bypass_test); diff --git a/src/meson.build b/src/meson.build index cdbed7b..db350eb 100644 --- a/src/meson.build +++ b/src/meson.build @@ -14,6 +14,7 @@ libecoli_sources = [ 'ecoli_murmurhash.c', 'ecoli_node_any.c', 'ecoli_node.c', + 'ecoli_node_bypass.c', 'ecoli_node_cmd.c', # 'ecoli_node_cond.c', 'ecoli_node_dynamic.c', -- 2.39.5