diff options
| author | arseny.kapoulkine <arseny.kapoulkine@99668b35-9821-0410-8761-19e4c4f06640> | 2010-05-31 16:57:51 +0000 |
|---|---|---|
| committer | arseny.kapoulkine <arseny.kapoulkine@99668b35-9821-0410-8761-19e4c4f06640> | 2010-05-31 16:57:51 +0000 |
| commit | 88bdad514c1a265022beb3464345e02cd1c4c1ec (patch) | |
| tree | 9561bb799ab065271d6fd2499f9a1137fbd33ff5 /src | |
| parent | 8af48d7e23a32ca73f0fdd53bff62915131d01d6 (diff) | |
XPath: Slightly optimized lexer
git-svn-id: http://pugixml.googlecode.com/svn/trunk@487 99668b35-9821-0410-8761-19e4c4f06640
Diffstat (limited to 'src')
| -rw-r--r-- | src/pugixpath.cpp | 124 |
1 files changed, 64 insertions, 60 deletions
diff --git a/src/pugixpath.cpp b/src/pugixpath.cpp index 78127dc..6cca5af 100644 --- a/src/pugixpath.cpp +++ b/src/pugixpath.cpp @@ -885,44 +885,46 @@ namespace pugi {
contents_clear();
- while (IS_CHARTYPEX(*m_cur, ctx_space)) ++m_cur;
+ const char_t* cur = m_cur;
- switch (*m_cur)
+ while (IS_CHARTYPEX(*cur, ctx_space)) ++cur;
+
+ switch (*cur)
{
case 0:
m_cur_lexeme = lex_eof;
break;
case '>':
- if (*(m_cur+1) == '=')
+ if (*(cur+1) == '=')
{
- m_cur += 2;
+ cur += 2;
m_cur_lexeme = lex_greater_or_equal;
}
else
{
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_greater;
}
break;
case '<':
- if (*(m_cur+1) == '=')
+ if (*(cur+1) == '=')
{
- m_cur += 2;
+ cur += 2;
m_cur_lexeme = lex_less_or_equal;
}
else
{
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_less;
}
break;
case '!':
- if (*(m_cur+1) == '=')
+ if (*(cur+1) == '=')
{
- m_cur += 2;
+ cur += 2;
m_cur_lexeme = lex_not_equal;
}
else
@@ -932,111 +934,111 @@ namespace pugi break;
case '=':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_equal;
break;
case '+':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_plus;
break;
case '-':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_minus;
break;
case '*':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_multiply;
break;
case '|':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_union;
break;
case '$':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_var_ref;
break;
case '(':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_open_brace;
break;
case ')':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_close_brace;
break;
case '[':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_open_square_brace;
break;
case ']':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_close_square_brace;
break;
case ',':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_comma;
break;
case '/':
- if (*(m_cur+1) == '/')
+ if (*(cur+1) == '/')
{
- m_cur += 2;
+ cur += 2;
m_cur_lexeme = lex_double_slash;
}
else
{
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_slash;
}
break;
case '.':
- if (*(m_cur+1) == '.')
+ if (*(cur+1) == '.')
{
- m_cur += 2;
+ cur += 2;
m_cur_lexeme = lex_double_dot;
}
- else if (IS_CHARTYPEX(*(m_cur+1), ctx_digit))
+ else if (IS_CHARTYPEX(*(cur+1), ctx_digit))
{
- m_cur_lexeme_contents.begin = m_cur; // .
+ m_cur_lexeme_contents.begin = cur; // .
- ++m_cur;
+ ++cur;
- while (IS_CHARTYPEX(*m_cur, ctx_digit)) m_cur++;
+ while (IS_CHARTYPEX(*cur, ctx_digit)) cur++;
- m_cur_lexeme_contents.end = m_cur;
+ m_cur_lexeme_contents.end = cur;
m_cur_lexeme = lex_number;
}
else
{
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_dot;
}
break;
case '@':
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_axis_attribute;
break;
@@ -1044,19 +1046,19 @@ namespace pugi case '"':
case '\'':
{
- char_t terminator = *m_cur;
+ char_t terminator = *cur;
- ++m_cur;
+ ++cur;
- m_cur_lexeme_contents.begin = m_cur;
- while (*m_cur && *m_cur != terminator) m_cur++;
- m_cur_lexeme_contents.end = m_cur;
+ m_cur_lexeme_contents.begin = cur;
+ while (*cur && *cur != terminator) cur++;
+ m_cur_lexeme_contents.end = cur;
- if (!*m_cur)
+ if (!*cur)
m_cur_lexeme = lex_none;
else
{
- m_cur += 1;
+ cur += 1;
m_cur_lexeme = lex_quoted_string;
}
@@ -1064,9 +1066,9 @@ namespace pugi }
case ':':
- if (*(m_cur+1) == ':')
+ if (*(cur+1) == ':')
{
- m_cur += 2;
+ cur += 2;
m_cur_lexeme = lex_double_colon;
}
else
@@ -1076,46 +1078,46 @@ namespace pugi break;
default:
- if (IS_CHARTYPEX(*m_cur, ctx_digit))
+ if (IS_CHARTYPEX(*cur, ctx_digit))
{
- m_cur_lexeme_contents.begin = m_cur;
+ m_cur_lexeme_contents.begin = cur;
- while (IS_CHARTYPEX(*m_cur, ctx_digit)) m_cur++;
+ while (IS_CHARTYPEX(*cur, ctx_digit)) cur++;
- if (*m_cur == '.')
+ if (*cur == '.')
{
- m_cur++;
+ cur++;
- while (IS_CHARTYPEX(*m_cur, ctx_digit)) m_cur++;
+ while (IS_CHARTYPEX(*cur, ctx_digit)) cur++;
}
- m_cur_lexeme_contents.end = m_cur;
+ m_cur_lexeme_contents.end = cur;
m_cur_lexeme = lex_number;
}
- else if (IS_CHARTYPEX(*m_cur, ctx_start_symbol))
+ else if (IS_CHARTYPEX(*cur, ctx_start_symbol))
{
- m_cur_lexeme_contents.begin = m_cur;
+ m_cur_lexeme_contents.begin = cur;
- while (IS_CHARTYPEX(*m_cur, ctx_symbol)) m_cur++;
+ while (IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
- if (m_cur[0] == ':')
+ if (cur[0] == ':')
{
- if (m_cur[1] == '*') // namespace test ncname:*
+ if (cur[1] == '*') // namespace test ncname:*
{
- m_cur += 2; // :*
+ cur += 2; // :*
}
- else if (IS_CHARTYPEX(m_cur[1], ctx_symbol)) // namespace test qname
+ else if (IS_CHARTYPEX(cur[1], ctx_symbol)) // namespace test qname
{
- m_cur++; // :
+ cur++; // :
- while (IS_CHARTYPEX(*m_cur, ctx_symbol)) m_cur++;
+ while (IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
}
}
- m_cur_lexeme_contents.end = m_cur;
+ m_cur_lexeme_contents.end = cur;
- while (IS_CHARTYPEX(*m_cur, ctx_space)) ++m_cur;
+ while (IS_CHARTYPEX(*cur, ctx_space)) ++cur;
m_cur_lexeme = lex_string;
}
@@ -1124,6 +1126,8 @@ namespace pugi throw xpath_exception("Unrecognized token");
}
}
+
+ m_cur = cur;
}
lexeme_t current() const
|