-/*
- * Copyright (c) 2016-2017, Olivier MATZ <zer0@droids-corp.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of the University of California, Berkeley nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2016, Olivier MATZ <zer0@droids-corp.org>
*/
#include <stdio.h>
#include <ecoli_test.h>
#include <ecoli_strvec.h>
#include <ecoli_node.h>
-#include <ecoli_parsed.h>
-#include <ecoli_completed.h>
+#include <ecoli_parse.h>
+#include <ecoli_complete.h>
#include <ecoli_node_seq.h>
#include <ecoli_node_many.h>
#include <ecoli_node_or.h>
-#include <ecoli_node_weakref.h>
#include <ecoli_node_expr.h>
+EC_LOG_TYPE_REGISTER(node_expr);
+
struct ec_node_expr {
struct ec_node gen;
unsigned int paren_len;
};
-static struct ec_parsed *ec_node_expr_parse(const struct ec_node *gen_node,
- const struct ec_strvec *strvec)
+static int ec_node_expr_parse(const struct ec_node *gen_node,
+ struct ec_parse *state,
+ const struct ec_strvec *strvec)
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
- return ec_node_parse_strvec(node->child, strvec);
+ if (node->child == NULL) {
+ errno = ENOENT;
+ return -1;
+ }
+
+ return ec_node_parse_child(node->child, state, strvec);
}
-static struct ec_completed *ec_node_expr_complete(const struct ec_node *gen_node,
- const struct ec_strvec *strvec)
+static int
+ec_node_expr_complete(const struct ec_node *gen_node,
+ struct ec_comp *comp,
+ const struct ec_strvec *strvec)
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
- return ec_node_complete_strvec(node->child, strvec);
+ if (node->child == NULL) {
+ errno = ENOENT;
+ return -1;
+ }
+
+ return ec_node_complete_child(node->child, comp, strvec);
}
static void ec_node_expr_free_priv(struct ec_node *gen_node)
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
unsigned int i;
- ec_log(EC_LOG_DEBUG, "free %p %p %p\n", node, node->child, node->val_node);
+ ec_node_free(node->child);
ec_node_free(node->val_node);
for (i = 0; i < node->bin_ops_len; i++)
}
ec_free(node->open_ops);
ec_free(node->close_ops);
-
- ec_node_free(node->child);
}
-static int ec_node_expr_build(struct ec_node *gen_node)
+static int ec_node_expr_build(struct ec_node_expr *node)
{
- struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
struct ec_node *term = NULL, *expr = NULL, *next = NULL,
- *pre_op = NULL, *post_op = NULL,
- *post = NULL, *weak = NULL;
+ *pre_op = NULL, *post_op = NULL, *ref = NULL,
+ *post = NULL;
unsigned int i;
- int ret;
- if (node->val_node == NULL)
- return -EINVAL;
+ ec_node_free(node->child);
+ node->child = NULL;
+
+ if (node->val_node == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+
if (node->bin_ops_len == 0 && node->pre_ops_len == 0 &&
- node->post_ops_len == 0)
- return -EINVAL;
-
- /* create the object, we will initialize it later: this is
- * needed because we have a circular dependency */
- ret = -ENOMEM;
- weak = ec_node("weakref", "weak");
- if (weak == NULL)
+ node->post_ops_len == 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /*
+ * Example of created grammar:
+ *
+ * pre_op = "!"
+ * post_op = "^"
+ * post = val |
+ * pre_op expr |
+ * "(" expr ")"
+ * term = post post_op*
+ * prod = term ( "*" term )*
+ * sum = prod ( "+" prod )*
+ * expr = sum
+ */
+
+ /* we use this as a ref, will be set later */
+ ref = ec_node("seq", "ref");
+ if (ref == NULL)
return -1;
/* prefix unary operators */
if (ec_node_or_add(post, ec_node_clone(node->val_node)) < 0)
goto fail;
if (ec_node_or_add(post,
- EC_NODE_SEQ(NULL,
+ EC_NODE_SEQ(EC_NO_ID,
ec_node_clone(pre_op),
- ec_node_clone(weak))) < 0)
+ ec_node_clone(ref))) < 0)
goto fail;
for (i = 0; i < node->paren_len; i++) {
- if (ec_node_or_add(post, EC_NODE_SEQ(NULL,
+ if (ec_node_or_add(post, EC_NODE_SEQ(EC_NO_ID,
ec_node_clone(node->open_ops[i]),
- ec_node_clone(weak),
+ ec_node_clone(ref),
ec_node_clone(node->close_ops[i]))) < 0)
goto fail;
}
term = EC_NODE_SEQ("term",
ec_node_clone(post),
- ec_node_many(NULL, ec_node_clone(post_op), 0, 0)
+ ec_node_many(EC_NO_ID, ec_node_clone(post_op), 0, 0)
);
if (term == NULL)
goto fail;
for (i = 0; i < node->bin_ops_len; i++) {
next = EC_NODE_SEQ("next",
ec_node_clone(term),
- ec_node_many(NULL,
- EC_NODE_SEQ(NULL,
+ ec_node_many(EC_NO_ID,
+ EC_NODE_SEQ(EC_NO_ID,
ec_node_clone(node->bin_ops[i]),
ec_node_clone(term)
),
ec_node_free(post);
post = NULL;
- /* no need to clone here, the node is not consumed */
- if (ec_node_weakref_set(weak, expr) < 0)
+ if (ec_node_seq_add(ref, ec_node_clone(expr)) < 0)
goto fail;
- ec_node_free(weak);
- weak = NULL;
+ ec_node_free(ref);
+ ref = NULL;
node->child = expr;
ec_node_free(pre_op);
ec_node_free(post_op);
ec_node_free(post);
- ec_node_free(weak);
+ ec_node_free(ref);
- return ret;
+ return -1;
+}
+
+static size_t
+ec_node_expr_get_children_count(const struct ec_node *gen_node)
+{
+ struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
+
+ if (node->child)
+ return 1;
+ return 0;
+}
+
+static struct ec_node *
+ec_node_expr_get_child(const struct ec_node *gen_node, size_t i)
+{
+ struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
+
+ if (i >= 1)
+ return NULL;
+
+ return node->child;
}
static struct ec_node_type ec_node_expr_type = {
.name = "expr",
- .build = ec_node_expr_build,
.parse = ec_node_expr_parse,
.complete = ec_node_expr_complete,
.size = sizeof(struct ec_node_expr),
.free_priv = ec_node_expr_free_priv,
+ .get_children_count = ec_node_expr_get_children_count,
+ .get_child = ec_node_expr_get_child,
};
EC_NODE_TYPE_REGISTER(ec_node_expr_type);
int ec_node_expr_set_val_node(struct ec_node *gen_node, struct ec_node *val_node)
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
- int ret;
- ret = -EINVAL;
- if (val_node == NULL)
- goto fail;
- ret = -EPERM;
- if (gen_node->flags & EC_NODE_F_BUILT)
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
goto fail;
- ret = -EEXIST;
- if (node->val_node != NULL)
+
+ if (val_node == NULL) {
+ errno = EINVAL;
goto fail;
+ }
+ ec_node_free(node->val_node);
node->val_node = val_node;
- gen_node->flags &= ~EC_NODE_F_BUILT;
+ ec_node_expr_build(node);
return 0;
fail:
ec_node_free(val_node);
- return ret;
+ return -1;
}
/* add a binary operator */
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
struct ec_node **bin_ops;
- int ret;
-
- // XXX check node type
- ret = -EINVAL;
- if (node == NULL || op == NULL)
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
goto fail;
- ret = -EPERM;
- if (gen_node->flags & EC_NODE_F_BUILT)
+
+ if (node == NULL || op == NULL) {
+ errno = EINVAL;
goto fail;
+ }
- ret = -ENOMEM;
bin_ops = ec_realloc(node->bin_ops,
(node->bin_ops_len + 1) * sizeof(*node->bin_ops));
if (bin_ops == NULL)
node->bin_ops = bin_ops;
bin_ops[node->bin_ops_len] = op;
node->bin_ops_len++;
- gen_node->flags &= ~EC_NODE_F_BUILT;
+ ec_node_expr_build(node);
return 0;
fail:
ec_node_free(op);
- return ret;
+ return -1;
}
/* add a unary pre-operator */
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
struct ec_node **pre_ops;
- int ret;
- // XXX check node type
-
- ret = -EINVAL;
- if (node == NULL || op == NULL)
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
goto fail;
- ret = -EPERM;
- if (gen_node->flags & EC_NODE_F_BUILT)
+
+ if (node == NULL || op == NULL) {
+ errno = EINVAL;
goto fail;
+ }
- ret = -ENOMEM;
pre_ops = ec_realloc(node->pre_ops,
(node->pre_ops_len + 1) * sizeof(*node->pre_ops));
if (pre_ops == NULL)
node->pre_ops = pre_ops;
pre_ops[node->pre_ops_len] = op;
node->pre_ops_len++;
- gen_node->flags &= ~EC_NODE_F_BUILT;
+ ec_node_expr_build(node);
return 0;
fail:
ec_node_free(op);
- return ret;
+ return -1;
}
/* add a unary post-operator */
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
struct ec_node **post_ops;
- int ret;
-
- // XXX check node type
- ret = -EINVAL;
- if (node == NULL || op == NULL)
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
goto fail;
- ret = -EPERM;
- if (gen_node->flags & EC_NODE_F_BUILT)
+
+ if (node == NULL || op == NULL) {
+ errno = EINVAL;
goto fail;
+ }
- ret = -ENOMEM;
post_ops = ec_realloc(node->post_ops,
(node->post_ops_len + 1) * sizeof(*node->post_ops));
if (post_ops == NULL)
node->post_ops = post_ops;
post_ops[node->post_ops_len] = op;
node->post_ops_len++;
- gen_node->flags &= ~EC_NODE_F_BUILT;
+ ec_node_expr_build(node);
return 0;
fail:
ec_node_free(op);
- return ret;
+ return -1;
}
/* add parenthesis symbols */
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
struct ec_node **open_ops, **close_ops;
- int ret;
- // XXX check node type
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
+ goto fail;
- ret = -EINVAL;
- if (node == NULL || open == NULL || close == NULL)
+ if (node == NULL || open == NULL || close == NULL) {
+ errno = EINVAL;
goto fail;
- ret = -EPERM;
- if (gen_node->flags & EC_NODE_F_BUILT)
- goto fail;;
+ }
- ret = -ENOMEM;
open_ops = ec_realloc(node->open_ops,
(node->paren_len + 1) * sizeof(*node->open_ops));
if (open_ops == NULL)
open_ops[node->paren_len] = open;
close_ops[node->paren_len] = close;
node->paren_len++;
- gen_node->flags &= ~EC_NODE_F_BUILT;
+ ec_node_expr_build(node);
return 0;
fail:
ec_node_free(open);
ec_node_free(close);
- return ret;
+ return -1;
}
enum expr_node_type {
PAREN_OPEN,
PAREN_CLOSE,
};
+
static enum expr_node_type get_node_type(const struct ec_node *expr_gen_node,
const struct ec_node *check)
{
struct result {
bool has_val;
void *val;
- const struct ec_parsed *op;
+ const struct ec_parse *op;
enum expr_node_type op_type;
};
const struct ec_node_expr_eval_ops *ops,
struct result *x, const struct result *y)
{
- int ret;
-
if (y->has_val == 0 && y->op == NULL)
return 0;
if (x->has_val == 0 && x->op == NULL) {
return 0;
}
- if (x->has_val && x->op == NULL && y->has_val && y->op != NULL) {
- ret = ops->eval_bin_op(&x->val, userctx, x->val, y->op, y->val);
- if (ret < 0)
- return ret;
+ if (x->has_val && y->has_val && y->op != NULL) {
+ if (y->op_type == BIN_OP) {
+ if (ops->eval_bin_op(&x->val, userctx, x->val,
+ y->op, y->val) < 0)
+ return -1;
- return 0;
+ return 0;
+ }
}
if (x->has_val == 0 && x->op != NULL && y->has_val && y->op == NULL) {
if (x->op_type == PRE_OP) {
- ret = ops->eval_pre_op(&x->val, userctx, y->val, x->op);
- if (ret < 0)
- return ret;
+ if (ops->eval_pre_op(&x->val, userctx, y->val,
+ x->op) < 0)
+ return -1;
x->has_val = true;
x->op_type = NONE;
x->op = NULL;
}
if (x->has_val && x->op == NULL && y->has_val == 0 && y->op != NULL) {
- ret = ops->eval_post_op(&x->val, userctx, x->val, y->op);
- if (ret < 0)
- return ret;
+ if (ops->eval_post_op(&x->val, userctx, x->val, y->op) < 0)
+ return -1;
return 0;
}
- assert(true); /* we should not get here */
- return -EINVAL;
+ assert(false); /* we should not get here */
+ return -1;
}
static int eval_expression(struct result *result,
void *userctx,
const struct ec_node_expr_eval_ops *ops,
const struct ec_node *expr_gen_node,
- const struct ec_parsed *parsed)
+ const struct ec_parse *parse)
{
- struct ec_parsed *open = NULL, *close = NULL;
+ struct ec_parse *open = NULL, *close = NULL;
struct result child_result;
- struct ec_parsed *child;
+ struct ec_parse *child;
enum expr_node_type type;
- int ret;
memset(result, 0, sizeof(*result));
memset(&child_result, 0, sizeof(child_result));
- type = get_node_type(expr_gen_node, parsed->node);
+ type = get_node_type(expr_gen_node, ec_parse_get_node(parse));
if (type == VAL) {
- ret = ops->eval_var(&result->val, userctx, parsed);
- if (ret < 0)
+ if (ops->eval_var(&result->val, userctx, parse) < 0)
goto fail;
result->has_val = 1;
} else if (type == PRE_OP || type == POST_OP || type == BIN_OP) {
- result->op = parsed;
+ result->op = parse;
result->op_type = type;
}
- TAILQ_FOREACH(child, &parsed->children, next) {
+ EC_PARSE_FOREACH_CHILD(child, parse) {
- type = get_node_type(expr_gen_node, child->node);
+ type = get_node_type(expr_gen_node, ec_parse_get_node(child));
if (type == PAREN_OPEN) {
open = child;
continue;
continue;
}
- ret = eval_expression(&child_result, userctx, ops,
- expr_gen_node, child);
- if (ret < 0)
+ if (eval_expression(&child_result, userctx, ops,
+ expr_gen_node, child) < 0)
goto fail;
- ret = merge_results(userctx, ops, result, &child_result);
- if (ret < 0)
+ if (merge_results(userctx, ops, result, &child_result) < 0)
goto fail;
memset(&child_result, 0, sizeof(child_result));
}
if (open != NULL && close != NULL) {
- ret = ops->eval_parenthesis(&result->val, userctx, open, close,
- result->val);
- if (ret < 0)
+ if (ops->eval_parenthesis(&result->val, userctx, open, close,
+ result->val) < 0)
goto fail;
}
ops->eval_free(child_result.val, userctx);
memset(result, 0, sizeof(*result));
- return ret;
+ return -1;
}
int ec_node_expr_eval(void **user_result, const struct ec_node *node,
- struct ec_parsed *parsed, const struct ec_node_expr_eval_ops *ops,
+ struct ec_parse *parse, const struct ec_node_expr_eval_ops *ops,
void *userctx)
{
struct result result;
- int ret;
if (ops == NULL || ops->eval_var == NULL || ops->eval_pre_op == NULL ||
ops->eval_post_op == NULL || ops->eval_bin_op == NULL ||
- ops->eval_parenthesis == NULL || ops->eval_free == NULL)
- return -EINVAL;
+ ops->eval_parenthesis == NULL ||
+ ops->eval_free == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
- if (!ec_parsed_matches(parsed))
- return -EINVAL;
+ if (ec_node_check_type(node, &ec_node_expr_type) < 0)
+ return -1;
- ec_parsed_dump(stdout, parsed); //XXX
- ret = eval_expression(&result, userctx, ops, node, parsed);
- if (ret < 0)
- return ret;
+ if (!ec_parse_matches(parse)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (eval_expression(&result, userctx, ops, node, parse) < 0)
+ return -1;
assert(result.has_val);
assert(result.op == NULL);
git.droids-corp.org / protos / libecoli.git / blobdiff