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Spreadsheet: Make the XSV parser start with a preview parse

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Instead of parsing the whole document. That's really wasteful and
super slow.
This commit is contained in:
Ali Mohammad Pur 2021-06-16 08:34:19 +04:30 • committed by Ali Mohammad Pur
parent 88b168ff16
commit b11b3c2f1c
4 changed files with 36 additions and 7 deletions
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18
Userland/Applications/Spreadsheet/Readers/XSV.cpp
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@ -11,12 +11,12 @@ namespace Reader {
ParserBehaviour operator&(ParserBehaviour left, ParserBehaviour right)
{
return static_cast<ParserBehaviour>(static_cast<u32>(left) & static_cast<u32>(right));
return static_cast<ParserBehaviour>(to_underlying(left) & to_underlying(right));
}
ParserBehaviour operator|(ParserBehaviour left, ParserBehaviour right)
{
return static_cast<ParserBehaviour>(static_cast<u32>(left) | static_cast<u32>(right));
return static_cast<ParserBehaviour>(to_underlying(left) | to_underlying(right));
}
void XSV::set_error(ReadError error)
@ -43,8 +43,22 @@ Vector<String> XSV::headers() const
return headers;
}
void XSV::parse_preview()
{
reset();
if ((m_behaviours & ParserBehaviour::ReadHeaders) != ParserBehaviour::None)
read_headers();
while (!has_error() && !m_lexer.is_eof()) {
if (m_rows.size() >= 10)
break;
m_rows.append(read_row());
}
}
void XSV::parse()
{
reset();
if ((m_behaviours & ParserBehaviour::ReadHeaders) != ParserBehaviour::None)
read_headers();