86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
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#include "parser.h"
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Parser::Parser(Lexer * lexer, QObject * parent)
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: QObject(parent)
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{
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connect(lexer, SIGNAL(character(char)), SLOT(readCharacter(char)));
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connect(lexer, SIGNAL(unsafeString(QString)), SLOT(readUnsafeString(QString)));
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connect(lexer, SIGNAL(safeString(QByteArray)), SLOT(readSafeString(QByteArray)));
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}
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Parser::~Parser()
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{
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}
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void Parser::readCharacter(char c)
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{
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switch(c)
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{
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case '+': stack.append(Task(Task::ReadStatus)); break;
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case '-': stack.append(Task(Task::ReadError)); break;
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case ':': stack.append(Task(Task::ReadInteger)); break;
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case '$': stack.append(Task(Task::ReadBulk)); break;
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case '*': stack.append(Task(Task::ReadMultiBulk)); break;
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default:
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emit warning(tr("Skipping unexpected character '%1'").arg(static_cast<int>(c), 0, 16));
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break;
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}
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}
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void Parser::readUnsafeString(const QString & value)
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{
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if(tos().action == Task::ReadMultiBulk)
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tos().count = value.toInt();
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else
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{
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stack.removeLast();
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if(tos().action == Task::ReadStatus)
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emit status(value);
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else if(tos().action == Task::ReadError)
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{
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int pos = value.indexOf(' ');
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emit error(value.left(pos), value.right(pos + 1));
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}
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else if(!stack.count())
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emit integer(value.toLongLong());
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else
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{
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tos().value.toList().append(value);
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descend();
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}
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}
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}
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void Parser::readSafeString(const QByteArray & value)
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{
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stack.removeLast();
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if(!stack.count())
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emit bulk(value);
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else
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{
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tos().value.toList().append(value);
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descend();
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}
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}
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void Parser::descend()
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{
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while(true)
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{
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if(tos().value.toList().count() < tos().count)
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break;
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if(stack.count() == 1)
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{
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emit multiBulk(tos().value.toList());
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stack.removeLast();
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break;
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}
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Task task = stack.takeLast();
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tos().value.toList().append(task.value);
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}
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}
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