mirror of
https://github.com/godotengine/godot
synced 2024-09-05 05:48:29 +00:00
Add TextServer parentheses stack dynamic reallocation support.
This commit is contained in:
parent
18c0f0b3ba
commit
49e316f41e
|
@ -30,6 +30,8 @@
|
|||
|
||||
#include "script_iterator.h"
|
||||
|
||||
// This implementation is derived from ICU: icu4c/source/extra/scrptrun/scrptrun.cpp
|
||||
|
||||
bool ScriptIterator::same_script(int32_t p_script_one, int32_t p_script_two) {
|
||||
return p_script_one <= USCRIPT_INHERITED || p_script_two <= USCRIPT_INHERITED || p_script_one == p_script_two;
|
||||
}
|
||||
|
@ -48,7 +50,8 @@ ScriptIterator::ScriptIterator(const String &p_string, int p_start, int p_length
|
|||
p_start = 0;
|
||||
}
|
||||
|
||||
ParenStackEntry paren_stack[128];
|
||||
int paren_size = PAREN_STACK_DEPTH;
|
||||
ParenStackEntry *paren_stack = (ParenStackEntry *)memalloc(paren_size * sizeof(ParenStackEntry));
|
||||
|
||||
int script_start;
|
||||
int script_end = p_start;
|
||||
|
@ -64,13 +67,22 @@ ScriptIterator::ScriptIterator(const String &p_string, int p_start, int p_length
|
|||
UChar32 ch = str[script_end];
|
||||
UScriptCode sc = uscript_getScript(ch, &err);
|
||||
if (U_FAILURE(err)) {
|
||||
memfree(paren_stack);
|
||||
ERR_FAIL_MSG(u_errorName(err));
|
||||
}
|
||||
if (u_getIntPropertyValue(ch, UCHAR_BIDI_PAIRED_BRACKET_TYPE) != U_BPT_NONE) {
|
||||
if (u_getIntPropertyValue(ch, UCHAR_BIDI_PAIRED_BRACKET_TYPE) == U_BPT_OPEN) {
|
||||
paren_stack[++paren_sp].pair_index = ch;
|
||||
// If it's an open character, push it onto the stack.
|
||||
paren_sp++;
|
||||
if (unlikely(paren_sp >= paren_size)) {
|
||||
// If the stack is full, allocate more space to handle deeply nested parentheses. This is unlikely to happen with any real text.
|
||||
paren_size += PAREN_STACK_DEPTH;
|
||||
paren_stack = (ParenStackEntry *)memrealloc(paren_stack, paren_size * sizeof(ParenStackEntry));
|
||||
}
|
||||
paren_stack[paren_sp].pair_index = ch;
|
||||
paren_stack[paren_sp].script_code = script_code;
|
||||
} else if (paren_sp >= 0) {
|
||||
// If it's a close character, find the matching open on the stack, and use that script code. Any non-matching open characters above it on the stack will be poped.
|
||||
UChar32 paired_ch = u_getBidiPairedBracket(ch);
|
||||
while (paren_sp >= 0 && paren_stack[paren_sp].pair_index != paired_ch) {
|
||||
paren_sp -= 1;
|
||||
|
@ -87,11 +99,13 @@ ScriptIterator::ScriptIterator(const String &p_string, int p_start, int p_length
|
|||
if (same_script(script_code, sc)) {
|
||||
if (script_code <= USCRIPT_INHERITED && sc > USCRIPT_INHERITED) {
|
||||
script_code = sc;
|
||||
// Now that we have a final script code, fix any open characters we pushed before we knew the script code.
|
||||
while (start_sp < paren_sp) {
|
||||
paren_stack[++start_sp].script_code = script_code;
|
||||
}
|
||||
}
|
||||
if ((u_getIntPropertyValue(ch, UCHAR_BIDI_PAIRED_BRACKET_TYPE) == U_BPT_CLOSE) && paren_sp >= 0) {
|
||||
// If this character is a close paired character pop the matching open character from the stack.
|
||||
paren_sp -= 1;
|
||||
if (start_sp >= 0) {
|
||||
start_sp -= 1;
|
||||
|
@ -109,4 +123,6 @@ ScriptIterator::ScriptIterator(const String &p_string, int p_start, int p_length
|
|||
|
||||
script_ranges.push_back(rng);
|
||||
} while (script_end < p_length);
|
||||
|
||||
memfree(paren_stack);
|
||||
}
|
||||
|
|
|
@ -43,6 +43,8 @@
|
|||
#include <hb.h>
|
||||
|
||||
class ScriptIterator {
|
||||
static const int PAREN_STACK_DEPTH = 128;
|
||||
|
||||
public:
|
||||
struct ScriptRange {
|
||||
int start = 0;
|
||||
|
|
Loading…
Reference in a new issue