#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 *node = (struct ec_node_expr *)gen_node;
- if (node->child == NULL)
- return -ENOENT;
+ if (node->child == NULL) {
+ errno = ENOENT;
+ return -1;
+ }
+
return ec_node_parse_child(node->child, state, strvec);
}
{
struct ec_node_expr *node = (struct ec_node_expr *)gen_node;
- if (node->child == NULL)
- return -ENOENT;
+ if (node->child == NULL) {
+ errno = ENOENT;
+ return -1;
+ }
+
return ec_node_complete_child(node->child, comp, strvec);
}
static int ec_node_expr_build(struct ec_node_expr *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;
ec_node_free(node->child);
node->child = NULL;
- if (node->val_node == NULL)
- return -EINVAL;
+ 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;
+ node->post_ops_len == 0) {
+ errno = EINVAL;
+ return -1;
+ }
/*
* Example of created grammar:
* expr = sum
*/
- /* 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)
+ /* 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_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(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;
}
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 struct ec_node_type 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 = ec_node_check_type(gen_node, &ec_node_expr_type);
- if (ret < 0)
- return ret;
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
+ goto fail;
- ret = -EINVAL;
- if (val_node == NULL)
+ if (val_node == NULL) {
+ errno = EINVAL;
goto fail;
+ }
ec_node_free(node->val_node);
node->val_node = val_node;
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;
- ret = ec_node_check_type(gen_node, &ec_node_expr_type);
- if (ret < 0)
- return ret;
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
+ goto fail;
- ret = -EINVAL;
- if (node == NULL || op == NULL)
+ 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)
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;
- ret = ec_node_check_type(gen_node, &ec_node_expr_type);
- if (ret < 0)
- return ret;
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
+ goto fail;
- ret = -EINVAL;
- if (node == NULL || op == NULL)
+ 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)
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;
- ret = ec_node_check_type(gen_node, &ec_node_expr_type);
- if (ret < 0)
- return ret;
+ if (ec_node_check_type(gen_node, &ec_node_expr_type) < 0)
+ goto fail;
- ret = -EINVAL;
- if (node == NULL || op == NULL)
+ 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)
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;
- ret = ec_node_check_type(gen_node, &ec_node_expr_type);
- if (ret < 0)
- return ret;
+ 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 = -ENOMEM;
open_ops = ec_realloc(node->open_ops,
(node->paren_len + 1) * sizeof(*node->open_ops));
if (open_ops == NULL)
fail:
ec_node_free(open);
ec_node_free(close);
- return ret;
+ return -1;
}
enum expr_node_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) {
if (x->has_val && y->has_val && y->op != NULL) {
if (y->op_type == BIN_OP) {
- ret = ops->eval_bin_op(&x->val, userctx, x->val,
- y->op, y->val);
- if (ret < 0)
- return ret;
+ if (ops->eval_bin_op(&x->val, userctx, x->val,
+ y->op, y->val) < 0)
+ return -1;
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(false); /* we should not get here */
- return -EINVAL;
+ return -1;
}
static int eval_expression(struct result *result,
struct result child_result;
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, ec_parse_get_node(parse));
if (type == VAL) {
- ret = ops->eval_var(&result->val, userctx, parse);
- 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) {
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,
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;
+ }
- ret = ec_node_check_type(node, &ec_node_expr_type);
- if (ret < 0)
- return ret;
+ if (ec_node_check_type(node, &ec_node_expr_type) < 0)
+ return -1;
- if (!ec_parse_matches(parse))
- return -EINVAL;
+ if (!ec_parse_matches(parse)) {
+ errno = EINVAL;
+ return -1;
+ }
- ret = eval_expression(&result, userctx, ops, node, parse);
- if (ret < 0)
- return ret;
+ 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