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-rw-r--r--src/node.c127
1 files changed, 118 insertions, 9 deletions
diff --git a/src/node.c b/src/node.c
index 9e83ed3..243c3e6 100644
--- a/src/node.c
+++ b/src/node.c
@@ -87,6 +87,10 @@ cmark_node_get_type(cmark_node *node)
static const char*
S_type_string(cmark_node *node)
{
+ if (node == NULL) {
+ return "NONE";
+ }
+
switch (node->type) {
case CMARK_NODE_NONE: return "NONE";
case CMARK_NODE_DOCUMENT: return "DOCUMENT";
@@ -116,31 +120,51 @@ S_type_string(cmark_node *node)
cmark_node*
cmark_node_next(cmark_node *node)
{
- return node->next;
+ if (node == NULL) {
+ return NULL;
+ } else {
+ return node->next;
+ }
}
cmark_node*
cmark_node_previous(cmark_node *node)
{
- return node->prev;
+ if (node == NULL) {
+ return NULL;
+ } else {
+ return node->prev;
+ }
}
cmark_node*
cmark_node_parent(cmark_node *node)
{
- return node->parent;
+ if (node == NULL) {
+ return NULL;
+ } else {
+ return node->parent;
+ }
}
cmark_node*
cmark_node_first_child(cmark_node *node)
{
- return node->first_child;
+ if (node == NULL) {
+ return NULL;
+ } else {
+ return node->first_child;
+ }
}
cmark_node*
cmark_node_last_child(cmark_node *node)
{
- return node->last_child;
+ if (node == NULL) {
+ return NULL;
+ } else {
+ return node->last_child;
+ }
}
static char*
@@ -153,6 +177,10 @@ S_strdup(const char *str) {
const char*
cmark_node_get_string_content(cmark_node *node) {
+ if (node == NULL) {
+ return NULL;
+ }
+
switch (node->type) {
case NODE_CODE_BLOCK:
case NODE_HTML:
@@ -172,6 +200,10 @@ cmark_node_get_string_content(cmark_node *node) {
int
cmark_node_set_string_content(cmark_node *node, const char *content) {
+ if (node == NULL) {
+ return 0;
+ }
+
switch (node->type) {
case NODE_CODE_BLOCK:
case NODE_HTML:
@@ -193,6 +225,10 @@ cmark_node_set_string_content(cmark_node *node, const char *content) {
int
cmark_node_get_header_level(cmark_node *node) {
+ if (node == NULL) {
+ return 0;
+ }
+
switch (node->type) {
case CMARK_NODE_HEADER:
return node->as.header.level;
@@ -206,7 +242,7 @@ cmark_node_get_header_level(cmark_node *node) {
int
cmark_node_set_header_level(cmark_node *node, int level) {
- if (level < 1 || level > 6) {
+ if (node == NULL || level < 1 || level > 6) {
return 0;
}
@@ -224,6 +260,10 @@ cmark_node_set_header_level(cmark_node *node, int level) {
cmark_list_type
cmark_node_get_list_type(cmark_node *node) {
+ if (node == NULL) {
+ return CMARK_NO_LIST;
+ }
+
if (node->type == CMARK_NODE_LIST) {
return node->as.list.list_type;
}
@@ -238,6 +278,10 @@ cmark_node_set_list_type(cmark_node *node, cmark_list_type type) {
return 0;
}
+ if (node == NULL) {
+ return 0;
+ }
+
if (node->type == CMARK_NODE_LIST) {
node->as.list.list_type = type;
return 1;
@@ -249,6 +293,10 @@ cmark_node_set_list_type(cmark_node *node, cmark_list_type type) {
int
cmark_node_get_list_start(cmark_node *node) {
+ if (node == NULL) {
+ return 0;
+ }
+
if (node->type == CMARK_NODE_LIST) {
return node->as.list.start;
}
@@ -259,7 +307,7 @@ cmark_node_get_list_start(cmark_node *node) {
int
cmark_node_set_list_start(cmark_node *node, int start) {
- if (start < 0) {
+ if (node == NULL || start < 0) {
return 0;
}
@@ -274,6 +322,10 @@ cmark_node_set_list_start(cmark_node *node, int start) {
int
cmark_node_get_list_tight(cmark_node *node) {
+ if (node == NULL) {
+ return 0;
+ }
+
if (node->type == CMARK_NODE_LIST) {
return node->as.list.tight;
}
@@ -284,6 +336,10 @@ cmark_node_get_list_tight(cmark_node *node) {
int
cmark_node_set_list_tight(cmark_node *node, int tight) {
+ if (node == NULL) {
+ return 0;
+ }
+
if (node->type == CMARK_NODE_LIST) {
node->as.list.tight = tight;
return 1;
@@ -295,6 +351,10 @@ cmark_node_set_list_tight(cmark_node *node, int tight) {
const char*
cmark_node_get_fence_info(cmark_node *node) {
+ if (node == NULL) {
+ return NULL;
+ }
+
if (node->type == NODE_CODE_BLOCK) {
return cmark_strbuf_cstr(&node->as.code.info);
}
@@ -305,6 +365,10 @@ cmark_node_get_fence_info(cmark_node *node) {
int
cmark_node_set_fence_info(cmark_node *node, const char *info) {
+ if (node == NULL) {
+ return 0;
+ }
+
if (node->type == NODE_CODE_BLOCK) {
cmark_strbuf_sets(&node->as.code.info, info);
return 1;
@@ -316,6 +380,10 @@ cmark_node_set_fence_info(cmark_node *node, const char *info) {
const char*
cmark_node_get_url(cmark_node *node) {
+ if (node == NULL) {
+ return NULL;
+ }
+
switch (node->type) {
case NODE_LINK:
case NODE_IMAGE:
@@ -329,6 +397,10 @@ cmark_node_get_url(cmark_node *node) {
int
cmark_node_set_url(cmark_node *node, const char *url) {
+ if (node == NULL) {
+ return 0;
+ }
+
switch (node->type) {
case NODE_LINK:
case NODE_IMAGE:
@@ -344,6 +416,10 @@ cmark_node_set_url(cmark_node *node, const char *url) {
const char*
cmark_node_get_title(cmark_node *node) {
+ if (node == NULL) {
+ return NULL;
+ }
+
switch (node->type) {
case NODE_LINK:
case NODE_IMAGE:
@@ -357,6 +433,10 @@ cmark_node_get_title(cmark_node *node) {
int
cmark_node_set_title(cmark_node *node, const char *title) {
+ if (node == NULL) {
+ return 0;
+ }
+
switch (node->type) {
case NODE_LINK:
case NODE_IMAGE:
@@ -372,27 +452,42 @@ cmark_node_set_title(cmark_node *node, const char *title) {
int
cmark_node_get_start_line(cmark_node *node) {
+ if (node == NULL) {
+ return 0;
+ }
return node->start_line;
}
int
cmark_node_get_start_column(cmark_node *node) {
+ if (node == NULL) {
+ return 0;
+ }
return node->start_column;
}
int
cmark_node_get_end_line(cmark_node *node) {
+ if (node == NULL) {
+ return 0;
+ }
return node->end_line;
}
static inline bool
S_is_block(cmark_node *node) {
+ if (node == NULL) {
+ return false;
+ }
return node->type >= CMARK_NODE_FIRST_BLOCK
&& node->type <= CMARK_NODE_LAST_BLOCK;
}
static inline bool
S_is_inline(cmark_node *node) {
+ if (node == NULL) {
+ return false;
+ }
return node->type >= CMARK_NODE_FIRST_INLINE
&& node->type <= CMARK_NODE_LAST_INLINE;
}
@@ -402,6 +497,10 @@ S_can_contain(cmark_node *node, cmark_node *child)
{
cmark_node *cur;
+ if (node == NULL || child == NULL) {
+ return false;
+ }
+
// Verify that child is not an ancestor of node or equal to node.
cur = node;
do {
@@ -444,6 +543,10 @@ S_can_contain(cmark_node *node, cmark_node *child)
static void
S_node_unlink(cmark_node *node)
{
+ if (node == NULL) {
+ return;
+ }
+
if (node->prev) {
node->prev->next = node->next;
}
@@ -476,6 +579,10 @@ cmark_node_unlink(cmark_node *node) {
int
cmark_node_insert_before(cmark_node *node, cmark_node *sibling)
{
+ if (node == NULL || sibling == NULL) {
+ return 0;
+ }
+
if (!node->parent || !S_can_contain(node->parent, sibling)) {
return 0;
}
@@ -507,6 +614,10 @@ cmark_node_insert_before(cmark_node *node, cmark_node *sibling)
int
cmark_node_insert_after(cmark_node *node, cmark_node *sibling)
{
+ if (node == NULL || sibling == NULL) {
+ return 0;
+ }
+
if (!node->parent || !S_can_contain(node->parent, sibling)) {
return 0;
}
@@ -656,5 +767,3 @@ cmark_node_check(cmark_node *node, FILE *out)
return errors;
}
-
-
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-26 20:09:36 +0000