1 /*
2 * Copyright (C) 2018-2020 Alexander Borisov
3 *
4 * Author: Alexander Borisov <borisov@lexbor.com>
5 */
6
7 #include "lexbor/html/tree/insertion_mode.h"
8
9
10 static bool
11 lxb_html_tree_insertion_mode_before_head_open(lxb_html_tree_t *tree,
12 lxb_html_token_t *token);
13
14 static bool
15 lxb_html_tree_insertion_mode_before_head_closed(lxb_html_tree_t *tree,
16 lxb_html_token_t *token);
17
18 lxb_inline bool
19 lxb_html_tree_insertion_mode_before_head_anything_else(lxb_html_tree_t *tree);
20
21 lxb_inline lxb_status_t
22 lxb_html_tree_insertion_mode_before_head_head(lxb_html_tree_t *tree,
23 lxb_html_token_t *token);
24
25
26 bool
lxb_html_tree_insertion_mode_before_head(lxb_html_tree_t * tree,lxb_html_token_t * token)27 lxb_html_tree_insertion_mode_before_head(lxb_html_tree_t *tree,
28 lxb_html_token_t *token)
29 {
30 if (token->type & LXB_HTML_TOKEN_TYPE_CLOSE) {
31 return lxb_html_tree_insertion_mode_before_head_closed(tree, token);
32 }
33
34 return lxb_html_tree_insertion_mode_before_head_open(tree, token);
35 }
36
37 static bool
lxb_html_tree_insertion_mode_before_head_open(lxb_html_tree_t * tree,lxb_html_token_t * token)38 lxb_html_tree_insertion_mode_before_head_open(lxb_html_tree_t *tree,
39 lxb_html_token_t *token)
40 {
41 switch (token->tag_id) {
42 case LXB_TAG__EM_COMMENT: {
43 lxb_dom_comment_t *comment;
44
45 comment = lxb_html_tree_insert_comment(tree, token, NULL);
46 if (comment == NULL) {
47 tree->status = LXB_STATUS_ERROR_MEMORY_ALLOCATION;
48
49 return lxb_html_tree_process_abort(tree);
50 }
51
52 break;
53 }
54
55 case LXB_TAG__EM_DOCTYPE:
56 lxb_html_tree_parse_error(tree, token,
57 LXB_HTML_RULES_ERROR_DOTOINBEHEMO);
58 break;
59
60 case LXB_TAG_HTML:
61 return lxb_html_tree_insertion_mode_in_body(tree, token);
62
63 case LXB_TAG_HEAD:
64 tree->status = lxb_html_tree_insertion_mode_before_head_head(tree,
65 token);
66 if (tree->status != LXB_STATUS_OK) {
67 return lxb_html_tree_process_abort(tree);
68 }
69
70 tree->has_explicit_head_tag = true;
71
72 tree->mode = lxb_html_tree_insertion_mode_in_head;
73
74 break;
75
76 case LXB_TAG__TEXT:
77 tree->status = lxb_html_token_data_skip_ws_begin(token);
78 if (tree->status != LXB_STATUS_OK) {
79 return lxb_html_tree_process_abort(tree);
80 }
81
82 if (token->text_start == token->text_end) {
83 return true;
84 }
85 /* fall through */
86
87 default:
88 return lxb_html_tree_insertion_mode_before_head_anything_else(tree);
89 }
90
91 return true;
92 }
93
94 static bool
lxb_html_tree_insertion_mode_before_head_closed(lxb_html_tree_t * tree,lxb_html_token_t * token)95 lxb_html_tree_insertion_mode_before_head_closed(lxb_html_tree_t *tree,
96 lxb_html_token_t *token)
97 {
98 switch (token->tag_id) {
99 case LXB_TAG_HEAD:
100 case LXB_TAG_BODY:
101 case LXB_TAG_HTML:
102 case LXB_TAG_BR:
103 return lxb_html_tree_insertion_mode_before_head_anything_else(tree);
104
105 default:
106 lxb_html_tree_parse_error(tree, token,
107 LXB_HTML_RULES_ERROR_UNCLTOINBEHEMO);
108 break;
109 }
110
111 return true;
112 }
113
114 lxb_inline bool
lxb_html_tree_insertion_mode_before_head_anything_else(lxb_html_tree_t * tree)115 lxb_html_tree_insertion_mode_before_head_anything_else(lxb_html_tree_t *tree)
116 {
117 lxb_html_token_t fake_token = {0};
118
119 fake_token.tag_id = LXB_TAG_HEAD;
120
121 tree->status = lxb_html_tree_insertion_mode_before_head_head(tree,
122 &fake_token);
123 if (tree->status != LXB_STATUS_OK) {
124 return lxb_html_tree_process_abort(tree);
125 }
126
127 tree->mode = lxb_html_tree_insertion_mode_in_head;
128
129 return false;
130 }
131
132 lxb_inline lxb_status_t
lxb_html_tree_insertion_mode_before_head_head(lxb_html_tree_t * tree,lxb_html_token_t * token)133 lxb_html_tree_insertion_mode_before_head_head(lxb_html_tree_t *tree,
134 lxb_html_token_t *token)
135 {
136 lxb_html_element_t *element;
137
138 element = lxb_html_tree_insert_html_element(tree, token);
139 if (element == NULL) {
140 return LXB_STATUS_ERROR_MEMORY_ALLOCATION;
141 }
142
143 tree->document->head = lxb_html_interface_head(element);
144
145 return LXB_STATUS_OK;
146 }
147