[pango/bidi-stack-size: 4/11] break: Speed things up a bit
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [pango/bidi-stack-size: 4/11] break: Speed things up a bit
- Date: Fri, 30 Jul 2021 13:06:30 +0000 (UTC)
commit 0e1a52d8792c2d424771378c0815805948859d69
Author: Matthias Clasen <mclasen redhat com>
Date: Tue Jul 27 11:50:47 2021 -0400
break: Speed things up a bit
This is not revolutionary, but it helps a bit:
We don't need to check the line break rules one-by-one.
After we applied one, most of the following rules can
be skipped, since they would just do the same.
This is not ideal, since we still do far too many
checks when following the if-else cascade to the end,
but its a start.
pango/break.c | 487 +++++++++++++++++++++++++++-------------------------------
1 file changed, 225 insertions(+), 262 deletions(-)
---
diff --git a/pango/break.c b/pango/break.c
index 100600c3..e3cdb30b 100644
--- a/pango/break.c
+++ b/pango/break.c
@@ -1103,268 +1103,231 @@ pango_default_break (const gchar *text,
/* add the line break rules in reverse order to override
the lower priority rules. */
- /* Rule LB30 */
- if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
- prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER ||
- prev_break_type == G_UNICODE_BREAK_NUMERIC) &&
- break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION &&
- !_pango_is_EastAsianWide (wc))
- break_op = BREAK_PROHIBITED;
-
- if (prev_break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS &&
- !_pango_is_EastAsianWide (prev_wc)&&
- (break_type == G_UNICODE_BREAK_ALPHABETIC ||
- break_type == G_UNICODE_BREAK_HEBREW_LETTER ||
- break_type == G_UNICODE_BREAK_NUMERIC))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB30a */
- if (prev_LB_type == LB_RI_Odd && LB_type == LB_RI_Even)
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB30b */
- if (prev_break_type == G_UNICODE_BREAK_EMOJI_BASE &&
- break_type == G_UNICODE_BREAK_EMOJI_MODIFIER)
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB29 */
- if (prev_break_type == G_UNICODE_BREAK_INFIX_SEPARATOR &&
- (break_type == G_UNICODE_BREAK_ALPHABETIC ||
- break_type == G_UNICODE_BREAK_HEBREW_LETTER))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB28 */
- if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
- prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER) &&
- (break_type == G_UNICODE_BREAK_ALPHABETIC ||
- break_type == G_UNICODE_BREAK_HEBREW_LETTER))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB27 */
- if ((prev_break_type == G_UNICODE_BREAK_HANGUL_L_JAMO ||
- prev_break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
- prev_break_type == G_UNICODE_BREAK_HANGUL_T_JAMO ||
- prev_break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE ||
- prev_break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE) &&
- (break_type == G_UNICODE_BREAK_INSEPARABLE ||
- break_type == G_UNICODE_BREAK_POSTFIX))
- break_op = BREAK_PROHIBITED;
-
- if (prev_break_type == G_UNICODE_BREAK_PREFIX &&
- (break_type == G_UNICODE_BREAK_HANGUL_L_JAMO ||
- break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
- break_type == G_UNICODE_BREAK_HANGUL_T_JAMO ||
- break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE ||
- break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB26 */
- if (prev_break_type == G_UNICODE_BREAK_HANGUL_L_JAMO &&
- (break_type == G_UNICODE_BREAK_HANGUL_L_JAMO ||
- break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
- break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE ||
- break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE))
- break_op = BREAK_PROHIBITED;
-
- if ((prev_break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
- prev_break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE) &&
- (break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
- break_type == G_UNICODE_BREAK_HANGUL_T_JAMO))
- break_op = BREAK_PROHIBITED;
-
- if ((prev_break_type == G_UNICODE_BREAK_HANGUL_T_JAMO ||
- prev_break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE) &&
- break_type == G_UNICODE_BREAK_HANGUL_T_JAMO)
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB25 with Example 7 of Customization */
- if ((prev_break_type == G_UNICODE_BREAK_PREFIX ||
- prev_break_type == G_UNICODE_BREAK_POSTFIX) &&
- break_type == G_UNICODE_BREAK_NUMERIC)
- break_op = BREAK_PROHIBITED;
-
- if ((prev_break_type == G_UNICODE_BREAK_PREFIX ||
- prev_break_type == G_UNICODE_BREAK_POSTFIX) &&
- (break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION ||
- break_type == G_UNICODE_BREAK_HYPHEN) &&
- next_break_type == G_UNICODE_BREAK_NUMERIC)
- break_op = BREAK_PROHIBITED;
-
- if ((prev_break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION ||
- prev_break_type == G_UNICODE_BREAK_HYPHEN) &&
- break_type == G_UNICODE_BREAK_NUMERIC)
- break_op = BREAK_PROHIBITED;
-
- if (prev_break_type == G_UNICODE_BREAK_NUMERIC &&
- (break_type == G_UNICODE_BREAK_NUMERIC ||
- break_type == G_UNICODE_BREAK_SYMBOL ||
- break_type == G_UNICODE_BREAK_INFIX_SEPARATOR))
- break_op = BREAK_PROHIBITED;
-
- if (prev_LB_type == LB_Numeric &&
- (break_type == G_UNICODE_BREAK_NUMERIC ||
- break_type == G_UNICODE_BREAK_SYMBOL ||
- break_type == G_UNICODE_BREAK_INFIX_SEPARATOR ||
- break_type == G_UNICODE_BREAK_CLOSE_PUNCTUATION ||
- break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS))
- break_op = BREAK_PROHIBITED;
-
- if ((prev_LB_type == LB_Numeric ||
- prev_LB_type == LB_Numeric_Close) &&
- (break_type == G_UNICODE_BREAK_POSTFIX ||
- break_type == G_UNICODE_BREAK_PREFIX))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB24 */
- if ((prev_break_type == G_UNICODE_BREAK_PREFIX ||
- prev_break_type == G_UNICODE_BREAK_POSTFIX) &&
- (break_type == G_UNICODE_BREAK_ALPHABETIC ||
- break_type == G_UNICODE_BREAK_HEBREW_LETTER))
- break_op = BREAK_PROHIBITED;
-
- if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
- prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER) &&
- (break_type == G_UNICODE_BREAK_PREFIX ||
- break_type == G_UNICODE_BREAK_POSTFIX))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB23 */
- if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
- prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER) &&
- break_type == G_UNICODE_BREAK_NUMERIC)
- break_op = BREAK_PROHIBITED;
-
- if (prev_break_type == G_UNICODE_BREAK_NUMERIC &&
- (break_type == G_UNICODE_BREAK_ALPHABETIC ||
- break_type == G_UNICODE_BREAK_HEBREW_LETTER))
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB23a */
- if (prev_break_type == G_UNICODE_BREAK_PREFIX &&
- (break_type == G_UNICODE_BREAK_IDEOGRAPHIC ||
- break_type == G_UNICODE_BREAK_EMOJI_BASE ||
- break_type == G_UNICODE_BREAK_EMOJI_MODIFIER))
- break_op = BREAK_PROHIBITED;
-
- if ((prev_break_type == G_UNICODE_BREAK_IDEOGRAPHIC ||
- prev_break_type == G_UNICODE_BREAK_EMOJI_BASE ||
- prev_break_type == G_UNICODE_BREAK_EMOJI_MODIFIER) &&
- break_type == G_UNICODE_BREAK_POSTFIX)
- break_op = BREAK_PROHIBITED;
-
- /* Rule LB22 */
- if (break_type == G_UNICODE_BREAK_INSEPARABLE)
- break_op = BREAK_PROHIBITED;
-
- if (break_type == G_UNICODE_BREAK_AFTER ||
- break_type == G_UNICODE_BREAK_HYPHEN ||
- break_type == G_UNICODE_BREAK_NON_STARTER ||
- prev_break_type == G_UNICODE_BREAK_BEFORE)
- break_op = BREAK_PROHIBITED; /* Rule LB21 */
-
- if (prev_prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER &&
- (prev_break_type == G_UNICODE_BREAK_HYPHEN ||
- prev_break_type == G_UNICODE_BREAK_AFTER))
- break_op = BREAK_PROHIBITED; /* Rule LB21a */
-
- if (prev_break_type == G_UNICODE_BREAK_SYMBOL &&
- break_type == G_UNICODE_BREAK_HEBREW_LETTER)
- break_op = BREAK_PROHIBITED; /* Rule LB21b */
-
- if (prev_break_type == G_UNICODE_BREAK_CONTINGENT ||
- break_type == G_UNICODE_BREAK_CONTINGENT)
- break_op = BREAK_ALLOWED; /* Rule LB20 */
-
- if (prev_break_type == G_UNICODE_BREAK_QUOTATION ||
- break_type == G_UNICODE_BREAK_QUOTATION)
- break_op = BREAK_PROHIBITED; /* Rule LB19 */
-
- /* handle related rules for Space as state machine here,
- and override the pair table result. */
- if (prev_break_type == G_UNICODE_BREAK_SPACE) /* Rule LB18 */
- break_op = BREAK_ALLOWED;
-
- if (row_break_type == G_UNICODE_BREAK_BEFORE_AND_AFTER &&
- break_type == G_UNICODE_BREAK_BEFORE_AND_AFTER)
- break_op = BREAK_PROHIBITED; /* Rule LB17 */
-
- if ((row_break_type == G_UNICODE_BREAK_CLOSE_PUNCTUATION ||
- row_break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS) &&
- break_type == G_UNICODE_BREAK_NON_STARTER)
- break_op = BREAK_PROHIBITED; /* Rule LB16 */
-
- if (row_break_type == G_UNICODE_BREAK_QUOTATION &&
- break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION)
- break_op = BREAK_PROHIBITED; /* Rule LB15 */
-
- if (row_break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION)
- break_op = BREAK_PROHIBITED; /* Rule LB14 */
-
- /* Rule LB13 with Example 7 of Customization */
- if (break_type == G_UNICODE_BREAK_EXCLAMATION)
- break_op = BREAK_PROHIBITED;
-
- if (prev_break_type != G_UNICODE_BREAK_NUMERIC &&
- (break_type == G_UNICODE_BREAK_CLOSE_PUNCTUATION ||
- break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS ||
- break_type == G_UNICODE_BREAK_INFIX_SEPARATOR ||
- break_type == G_UNICODE_BREAK_SYMBOL))
- break_op = BREAK_PROHIBITED;
-
- if (prev_break_type == G_UNICODE_BREAK_NON_BREAKING_GLUE)
- break_op = BREAK_PROHIBITED; /* Rule LB12 */
-
- if (break_type == G_UNICODE_BREAK_NON_BREAKING_GLUE &&
- (prev_break_type != G_UNICODE_BREAK_SPACE &&
- prev_break_type != G_UNICODE_BREAK_AFTER &&
- prev_break_type != G_UNICODE_BREAK_HYPHEN))
- break_op = BREAK_PROHIBITED; /* Rule LB12a */
-
- if (prev_break_type == G_UNICODE_BREAK_WORD_JOINER ||
- break_type == G_UNICODE_BREAK_WORD_JOINER)
- break_op = BREAK_PROHIBITED; /* Rule LB11 */
-
-
- /* Rule LB9 */
- if (break_type == G_UNICODE_BREAK_COMBINING_MARK ||
- break_type == G_UNICODE_BREAK_ZERO_WIDTH_JOINER)
- {
- if (!(prev_break_type == G_UNICODE_BREAK_MANDATORY ||
- prev_break_type == G_UNICODE_BREAK_CARRIAGE_RETURN ||
- prev_break_type == G_UNICODE_BREAK_LINE_FEED ||
- prev_break_type == G_UNICODE_BREAK_NEXT_LINE ||
- prev_break_type == G_UNICODE_BREAK_SPACE ||
- prev_break_type == G_UNICODE_BREAK_ZERO_WIDTH_SPACE))
- break_op = BREAK_PROHIBITED;
- }
-
- if (row_break_type == G_UNICODE_BREAK_ZERO_WIDTH_SPACE)
- break_op = BREAK_ALLOWED; /* Rule LB8 */
-
- if (prev_wc == 0x200D)
- break_op = BREAK_PROHIBITED; /* Rule LB8a */
-
- if (break_type == G_UNICODE_BREAK_SPACE ||
- break_type == G_UNICODE_BREAK_ZERO_WIDTH_SPACE)
- break_op = BREAK_PROHIBITED; /* Rule LB7 */
-
- /* Rule LB6 */
- if (break_type == G_UNICODE_BREAK_MANDATORY ||
- break_type == G_UNICODE_BREAK_CARRIAGE_RETURN ||
- break_type == G_UNICODE_BREAK_LINE_FEED ||
- break_type == G_UNICODE_BREAK_NEXT_LINE)
- break_op = BREAK_PROHIBITED;
-
- /* Rules LB4 and LB5 */
- if (prev_break_type == G_UNICODE_BREAK_MANDATORY ||
- (prev_break_type == G_UNICODE_BREAK_CARRIAGE_RETURN &&
- wc != '\n') ||
- prev_break_type == G_UNICODE_BREAK_LINE_FEED ||
- prev_break_type == G_UNICODE_BREAK_NEXT_LINE)
- {
- attrs[i].is_mandatory_break = TRUE;
- break_op = BREAK_ALLOWED;
- }
+ /* Rule LB30 */
+ if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER ||
+ prev_break_type == G_UNICODE_BREAK_NUMERIC) &&
+ break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION &&
+ !_pango_is_EastAsianWide (wc))
+ break_op = BREAK_PROHIBITED;
+ else if (prev_break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS &&
+ !_pango_is_EastAsianWide (prev_wc) &&
+ (break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ break_type == G_UNICODE_BREAK_HEBREW_LETTER ||
+ break_type == G_UNICODE_BREAK_NUMERIC))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB30a */
+ else if (prev_LB_type == LB_RI_Odd && LB_type == LB_RI_Even)
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB30b */
+ else if (prev_break_type == G_UNICODE_BREAK_EMOJI_BASE &&
+ break_type == G_UNICODE_BREAK_EMOJI_MODIFIER)
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB29 */
+ else if (prev_break_type == G_UNICODE_BREAK_INFIX_SEPARATOR &&
+ (break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ break_type == G_UNICODE_BREAK_HEBREW_LETTER))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB28 */
+ else if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER) &&
+ (break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ break_type == G_UNICODE_BREAK_HEBREW_LETTER))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB27 */
+ else if ((prev_break_type == G_UNICODE_BREAK_HANGUL_L_JAMO ||
+ prev_break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
+ prev_break_type == G_UNICODE_BREAK_HANGUL_T_JAMO ||
+ prev_break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE ||
+ prev_break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE) &&
+ (break_type == G_UNICODE_BREAK_INSEPARABLE ||
+ break_type == G_UNICODE_BREAK_POSTFIX))
+ break_op = BREAK_PROHIBITED;
+ else if (prev_break_type == G_UNICODE_BREAK_PREFIX &&
+ (break_type == G_UNICODE_BREAK_HANGUL_L_JAMO ||
+ break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
+ break_type == G_UNICODE_BREAK_HANGUL_T_JAMO ||
+ break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE ||
+ break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB26 */
+ else if (prev_break_type == G_UNICODE_BREAK_HANGUL_L_JAMO &&
+ (break_type == G_UNICODE_BREAK_HANGUL_L_JAMO ||
+ break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
+ break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE ||
+ break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE))
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
+ prev_break_type == G_UNICODE_BREAK_HANGUL_LV_SYLLABLE) &&
+ (break_type == G_UNICODE_BREAK_HANGUL_V_JAMO ||
+ break_type == G_UNICODE_BREAK_HANGUL_T_JAMO))
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_break_type == G_UNICODE_BREAK_HANGUL_T_JAMO ||
+ prev_break_type == G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE) &&
+ break_type == G_UNICODE_BREAK_HANGUL_T_JAMO)
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB25 with Example 7 of Customization */
+ else if ((prev_break_type == G_UNICODE_BREAK_PREFIX ||
+ prev_break_type == G_UNICODE_BREAK_POSTFIX) &&
+ break_type == G_UNICODE_BREAK_NUMERIC)
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_break_type == G_UNICODE_BREAK_PREFIX ||
+ prev_break_type == G_UNICODE_BREAK_POSTFIX) &&
+ (break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION ||
+ break_type == G_UNICODE_BREAK_HYPHEN) &&
+ next_break_type == G_UNICODE_BREAK_NUMERIC)
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION ||
+ prev_break_type == G_UNICODE_BREAK_HYPHEN) &&
+ break_type == G_UNICODE_BREAK_NUMERIC)
+ break_op = BREAK_PROHIBITED;
+ else if (prev_break_type == G_UNICODE_BREAK_NUMERIC &&
+ (break_type == G_UNICODE_BREAK_NUMERIC ||
+ break_type == G_UNICODE_BREAK_SYMBOL ||
+ break_type == G_UNICODE_BREAK_INFIX_SEPARATOR))
+ break_op = BREAK_PROHIBITED;
+ else if (prev_LB_type == LB_Numeric &&
+ (break_type == G_UNICODE_BREAK_NUMERIC ||
+ break_type == G_UNICODE_BREAK_SYMBOL ||
+ break_type == G_UNICODE_BREAK_INFIX_SEPARATOR ||
+ break_type == G_UNICODE_BREAK_CLOSE_PUNCTUATION ||
+ break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS))
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_LB_type == LB_Numeric ||
+ prev_LB_type == LB_Numeric_Close) &&
+ (break_type == G_UNICODE_BREAK_POSTFIX ||
+ break_type == G_UNICODE_BREAK_PREFIX))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB24 */
+ else if ((prev_break_type == G_UNICODE_BREAK_PREFIX ||
+ prev_break_type == G_UNICODE_BREAK_POSTFIX) &&
+ (break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ break_type == G_UNICODE_BREAK_HEBREW_LETTER))
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER) &&
+ (break_type == G_UNICODE_BREAK_PREFIX ||
+ break_type == G_UNICODE_BREAK_POSTFIX))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB23 */
+ else if ((prev_break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER) &&
+ break_type == G_UNICODE_BREAK_NUMERIC)
+ break_op = BREAK_PROHIBITED;
+ else if (prev_break_type == G_UNICODE_BREAK_NUMERIC &&
+ (break_type == G_UNICODE_BREAK_ALPHABETIC ||
+ break_type == G_UNICODE_BREAK_HEBREW_LETTER))
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB23a */
+ else if (prev_break_type == G_UNICODE_BREAK_PREFIX &&
+ (break_type == G_UNICODE_BREAK_IDEOGRAPHIC ||
+ break_type == G_UNICODE_BREAK_EMOJI_BASE ||
+ break_type == G_UNICODE_BREAK_EMOJI_MODIFIER))
+ break_op = BREAK_PROHIBITED;
+ else if ((prev_break_type == G_UNICODE_BREAK_IDEOGRAPHIC ||
+ prev_break_type == G_UNICODE_BREAK_EMOJI_BASE ||
+ prev_break_type == G_UNICODE_BREAK_EMOJI_MODIFIER) &&
+ break_type == G_UNICODE_BREAK_POSTFIX)
+ break_op = BREAK_PROHIBITED;
+ /* Rule LB22 */
+ else if (break_type == G_UNICODE_BREAK_INSEPARABLE)
+ break_op = BREAK_PROHIBITED;
+ else if (break_type == G_UNICODE_BREAK_AFTER ||
+ break_type == G_UNICODE_BREAK_HYPHEN ||
+ break_type == G_UNICODE_BREAK_NON_STARTER ||
+ prev_break_type == G_UNICODE_BREAK_BEFORE)
+ break_op = BREAK_PROHIBITED; /* Rule LB21 */
+ else if (prev_prev_break_type == G_UNICODE_BREAK_HEBREW_LETTER &&
+ (prev_break_type == G_UNICODE_BREAK_HYPHEN ||
+ prev_break_type == G_UNICODE_BREAK_AFTER))
+ break_op = BREAK_PROHIBITED; /* Rule LB21a */
+ else if (prev_break_type == G_UNICODE_BREAK_SYMBOL &&
+ break_type == G_UNICODE_BREAK_HEBREW_LETTER)
+ break_op = BREAK_PROHIBITED; /* Rule LB21b */
+
+ if (prev_break_type == G_UNICODE_BREAK_CONTINGENT ||
+ break_type == G_UNICODE_BREAK_CONTINGENT)
+ break_op = BREAK_ALLOWED; /* Rule LB20 */
+
+ if (prev_break_type == G_UNICODE_BREAK_QUOTATION ||
+ break_type == G_UNICODE_BREAK_QUOTATION)
+ break_op = BREAK_PROHIBITED; /* Rule LB19 */
+
+ /* handle related rules for Space as state machine here,
+ * and override the pair table result.
+ */
+ if (prev_break_type == G_UNICODE_BREAK_SPACE) /* Rule LB18 */
+ break_op = BREAK_ALLOWED;
+
+ if (row_break_type == G_UNICODE_BREAK_BEFORE_AND_AFTER &&
+ break_type == G_UNICODE_BREAK_BEFORE_AND_AFTER)
+ break_op = BREAK_PROHIBITED; /* Rule LB17 */
+ else if ((row_break_type == G_UNICODE_BREAK_CLOSE_PUNCTUATION ||
+ row_break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS) &&
+ break_type == G_UNICODE_BREAK_NON_STARTER)
+ break_op = BREAK_PROHIBITED; /* Rule LB16 */
+ else if (row_break_type == G_UNICODE_BREAK_QUOTATION &&
+ break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION)
+ break_op = BREAK_PROHIBITED; /* Rule LB15 */
+ else if (row_break_type == G_UNICODE_BREAK_OPEN_PUNCTUATION)
+ break_op = BREAK_PROHIBITED; /* Rule LB14 */
+ /* Rule LB13 with Example 7 of Customization */
+ else if (break_type == G_UNICODE_BREAK_EXCLAMATION)
+ break_op = BREAK_PROHIBITED;
+ else if (prev_break_type != G_UNICODE_BREAK_NUMERIC &&
+ (break_type == G_UNICODE_BREAK_CLOSE_PUNCTUATION ||
+ break_type == G_UNICODE_BREAK_CLOSE_PARANTHESIS ||
+ break_type == G_UNICODE_BREAK_INFIX_SEPARATOR ||
+ break_type == G_UNICODE_BREAK_SYMBOL))
+ break_op = BREAK_PROHIBITED;
+ else if (prev_break_type == G_UNICODE_BREAK_NON_BREAKING_GLUE)
+ break_op = BREAK_PROHIBITED; /* Rule LB12 */
+ else if (break_type == G_UNICODE_BREAK_NON_BREAKING_GLUE &&
+ (prev_break_type != G_UNICODE_BREAK_SPACE &&
+ prev_break_type != G_UNICODE_BREAK_AFTER &&
+ prev_break_type != G_UNICODE_BREAK_HYPHEN))
+ break_op = BREAK_PROHIBITED; /* Rule LB12a */
+ else if (prev_break_type == G_UNICODE_BREAK_WORD_JOINER ||
+ break_type == G_UNICODE_BREAK_WORD_JOINER)
+ break_op = BREAK_PROHIBITED; /* Rule LB11 */
+ /* Rule LB9 */
+ else if (break_type == G_UNICODE_BREAK_COMBINING_MARK ||
+ break_type == G_UNICODE_BREAK_ZERO_WIDTH_JOINER)
+ {
+ if (!(prev_break_type == G_UNICODE_BREAK_MANDATORY ||
+ prev_break_type == G_UNICODE_BREAK_CARRIAGE_RETURN ||
+ prev_break_type == G_UNICODE_BREAK_LINE_FEED ||
+ prev_break_type == G_UNICODE_BREAK_NEXT_LINE ||
+ prev_break_type == G_UNICODE_BREAK_SPACE ||
+ prev_break_type == G_UNICODE_BREAK_ZERO_WIDTH_SPACE))
+ break_op = BREAK_PROHIBITED;
+ }
+
+ if (row_break_type == G_UNICODE_BREAK_ZERO_WIDTH_SPACE)
+ break_op = BREAK_ALLOWED; /* Rule LB8 */
+
+ if (prev_wc == 0x200D)
+ break_op = BREAK_PROHIBITED; /* Rule LB8a */
+ else if (break_type == G_UNICODE_BREAK_SPACE ||
+ break_type == G_UNICODE_BREAK_ZERO_WIDTH_SPACE)
+ break_op = BREAK_PROHIBITED; /* Rule LB7 */
+ /* Rule LB6 */
+ else if (break_type == G_UNICODE_BREAK_MANDATORY ||
+ break_type == G_UNICODE_BREAK_CARRIAGE_RETURN ||
+ break_type == G_UNICODE_BREAK_LINE_FEED ||
+ break_type == G_UNICODE_BREAK_NEXT_LINE)
+ break_op = BREAK_PROHIBITED;
+
+ /* Rules LB4 and LB5 */
+ if (prev_break_type == G_UNICODE_BREAK_MANDATORY ||
+ (prev_break_type == G_UNICODE_BREAK_CARRIAGE_RETURN &&
+ wc != '\n') ||
+ prev_break_type == G_UNICODE_BREAK_LINE_FEED ||
+ prev_break_type == G_UNICODE_BREAK_NEXT_LINE)
+ {
+ attrs[i].is_mandatory_break = TRUE;
+ break_op = BREAK_ALLOWED;
+ }
switch (break_op)
{
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