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remove code duplication and streamline identifiers

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In regparse.c:

* Reduce coode duplication by merging the almost identical functions
  create_sequence_node and create_alternate_node into a new function
  create_node_from_array, adding a parameter that distinguishes  between
  creating a list and creating an alternative.

* Streamline variable/function naming. Unicode UAX #29 uses 'sequence', but
  the regular expression library uses 'list' for the same concept. Keep
  'sequence' in the ccmments that are taken from UAX #29, but use 'list'
  in variable names.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66234 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
duerst 2018-12-06 04:46:57 +00:00
parent ce37214a45
commit 456a696f72
1 changed files with 38 additions and 59 deletions
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97
regparse.c
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@ -5765,41 +5765,20 @@ quantify_property_node(Node **np, ScanEnv* env, const char* propname, char repet
return quantify_node(np, lower, upper);
}
#define LIST 0
#define ALT 1
/* IMPORTANT: Make sure node_array ends with NULL_NODE */
static int
create_sequence_node(Node **np, Node **node_array)
create_node_from_array(int kind, Node **np, Node **node_array)
{
Node* tmp = NULL_NODE;
int i = 0;
while (node_array[i] != NULL_NODE) i++;
while (--i >= 0) {
*np = node_new_list(node_array[i], tmp);
if (IS_NULL(*np)) {
while (i >= 0) {
onig_node_free(node_array[i]);
node_array[i--] = NULL_NODE;
}
onig_node_free(tmp);
return ONIGERR_MEMORY;
}
else
node_array[i] = NULL_NODE;
tmp = *np;
}
return 0;
}
/* IMPORTANT: Make sure node_array ends with NULL_NODE */
static int
create_alternate_node(Node **np, Node **node_array)
{
Node* tmp = NULL_NODE;
int i = 0;
while (node_array[i] != NULL_NODE) i++;
while (--i >= 0) {
*np = onig_node_new_alt(node_array[i], tmp);
*np = kind==LIST ? node_new_list(node_array[i], tmp)
: onig_node_new_alt(node_array[i], tmp);
if (IS_NULL(*np)) {
while (i >= 0) {
onig_node_free(node_array[i]);
@ -5869,10 +5848,10 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
/* precore* core postcore* */
{
Node *seq[4];
Node *list[4];
/* precore*; precore := Prepend */
R_ERR(quantify_property_node(seq+0, env, "Grapheme_Cluster_Break=Prepend", '*'));
R_ERR(quantify_property_node(list+0, env, "Grapheme_Cluster_Break=Prepend", '*'));
/* core := hangul-syllable
* | ri-sequence
@ -5890,9 +5869,9 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
/* L* (V+ | LV V* | LVT) T* */
{
Node *H_seq[4];
Node *H_list[4];
R_ERR(quantify_property_node(H_seq+0, env, "Grapheme_Cluster_Break=L", '*'));
R_ERR(quantify_property_node(H_list+0, env, "Grapheme_Cluster_Break=L", '*'));
/* V+ | LV V* | LVT */
{
@ -5902,25 +5881,25 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
/* LV V* */
{
Node *H_seq2[3];
Node *H_list2[3];
R_ERR(create_property_node(H_seq2+0, env, "Grapheme_Cluster_Break=LV"));
R_ERR(quantify_property_node(H_seq2+1, env, "Grapheme_Cluster_Break=V", '*'));
R_ERR(create_property_node(H_list2+0, env, "Grapheme_Cluster_Break=LV"));
R_ERR(quantify_property_node(H_list2+1, env, "Grapheme_Cluster_Break=V", '*'));
H_seq2[2] = NULL_NODE;
R_ERR(create_sequence_node(H_alt2+1, H_seq2));
H_list2[2] = NULL_NODE;
R_ERR(create_node_from_array(LIST, H_alt2+1, H_list2));
}
R_ERR(create_property_node(H_alt2+2, env, "Grapheme_Cluster_Break=LVT"));
H_alt2[3] = NULL_NODE;
R_ERR(create_alternate_node(H_seq+1, H_alt2));
R_ERR(create_node_from_array(ALT, H_list+1, H_alt2));
}
R_ERR(quantify_property_node(H_seq+2, env, "Grapheme_Cluster_Break=T", '*'));
R_ERR(quantify_property_node(H_list+2, env, "Grapheme_Cluster_Break=T", '*'));
H_seq[3] = NULL_NODE;
R_ERR(create_sequence_node(core_alts+0, H_seq));
H_list[3] = NULL_NODE;
R_ERR(create_node_from_array(LIST, core_alts+0, H_list));
}
/* L+ */
@ -5935,31 +5914,31 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
/* xpicto-sequence := \p{Extended_Pictographic} (Extend* ZWJ \p{Extended_Pictographic})* */
{
Node *XP_seq[3];
Node *XP_list[3];
R_ERR(create_property_node(XP_seq+0, env, "Extended_Pictographic"));
R_ERR(create_property_node(XP_list+0, env, "Extended_Pictographic"));
/* (Extend* ZWJ \p{Extended_Pictographic})* */
{
Node *Ex_seq[4];
Node *Ex_list[4];
R_ERR(quantify_property_node(Ex_seq+0, env, "Grapheme_Cluster_Break=Extend", '*'));
R_ERR(quantify_property_node(Ex_list+0, env, "Grapheme_Cluster_Break=Extend", '*'));
/* ZWJ (ZERO WIDTH JOINER) */
r = ONIGENC_CODE_TO_MBC(env->enc, 0x200D, buf);
if (r < 0) goto err;
Ex_seq[1] = node_new_str_raw(buf, buf + r);
if (IS_NULL(Ex_seq[1])) goto err;
Ex_list[1] = node_new_str_raw(buf, buf + r);
if (IS_NULL(Ex_list[1])) goto err;
R_ERR(create_property_node(Ex_seq+2, env, "Extended_Pictographic"));
R_ERR(create_property_node(Ex_list+2, env, "Extended_Pictographic"));
Ex_seq[3] = NULL_NODE;
R_ERR(create_sequence_node(XP_seq+1, Ex_seq));
Ex_list[3] = NULL_NODE;
R_ERR(create_node_from_array(LIST, XP_list+1, Ex_list));
}
R_ERR(quantify_node(XP_seq+1, 0, REPEAT_INFINITE)); /* TODO: Check about node freeing */
R_ERR(quantify_node(XP_list+1, 0, REPEAT_INFINITE)); /* TODO: Check about node freeing */
XP_seq[2] = NULL_NODE;
R_ERR(create_sequence_node(core_alts+4, XP_seq));
XP_list[2] = NULL_NODE;
R_ERR(create_node_from_array(LIST, core_alts+4, XP_list));
}
/* [^Control CR LF] */
@ -5984,18 +5963,18 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
}
core_alts[6] = NULL_NODE;
R_ERR(create_alternate_node(seq+1, core_alts));
R_ERR(create_node_from_array(ALT, list+1, core_alts));
}
/* postcore*; postcore = [Extend ZWJ SpacingMark] */
R_ERR(create_property_node(seq+2, env, "Grapheme_Cluster_Break=Extend"));
cc = NCCLASS(seq[2]);
R_ERR(create_property_node(list+2, env, "Grapheme_Cluster_Break=Extend"));
cc = NCCLASS(list[2]);
R_ERR(add_property_to_cc(cc, "Grapheme_Cluster_Break=SpacingMark", 0, env));
R_ERR(add_code_range(&(cc->mbuf), env, 0x200D, 0x200D));
R_ERR(quantify_node(seq+2, 0, REPEAT_INFINITE));
R_ERR(quantify_node(list+2, 0, REPEAT_INFINITE));
seq[3] = NULL_NODE;
R_ERR(create_sequence_node(alts+1, seq));
list[3] = NULL_NODE;
R_ERR(create_node_from_array(LIST, alts+1, list));
}
/* PerlSyntax: (?s:.), RubySyntax: (?m:.) */
@ -6012,7 +5991,7 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
alts[2] = tmp;
alts[3] = NULL_NODE;
R_ERR(create_alternate_node(&top_alt, alts));
R_ERR(create_node_from_array(ALT, &top_alt, alts));
}
}
else