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pseudoio.cpp
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pseudoio.cpp
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#include "pseudoio.h"
#include <QDebug>
PseudoIO::PseudoIO(QTextBrowser* code, QTextBrowser* output, QTextBrowser* ast, QTextBrowser* state, QLineEdit* command)
: codeDisplay(code), outputDisplay(output), astDisplay(ast), stateDisplay(state), commandInput(command) {
connect(commandInput, &QLineEdit::returnPressed, this, QOverload<>::of(&PseudoIO::handleInput));
commandInput->setFocus();
}
// Program requested input
void PseudoIO::requestInput(QString identifier) {
commandInput->setText("? ");
commandInput->setFocus();
awaitingInput = true;
awaitingIdentifier = identifier;
}
void PseudoIO::requestStringInput() {
awaitingInput = true;
stringInput = true;
}
// User pressed enter in command input box
void PseudoIO::handleInput() {
QString stream = commandInput->text();
if (stream.isEmpty()) {
return;
}
if (!awaitingInput) { // Treat as command
emit receivedCommand(stream);
return;
}
// Handle input requested by program
if (!stream.startsWith("? ")) {
commandInput->setText("? ");
return;
}
commandInput->clear();
stream = stream.section(' ', 1); // Get actual input value
finishInput(stream);
}
// Pass input back to program
void PseudoIO::finishInput(QString input) {
Value* value = nullptr;
if (stringInput) {
value = new StringValue(input);
} else { // Integer input
int inputValue;
bool ok;
inputValue = input.toInt(&ok);
if (!ok) {
// Invalid input, retry
requestInput(awaitingIdentifier);
return;
}
value = new IntegerValue(inputValue);
}
// Concurrency issue: Must reset input state before emitting signal
awaitingInput = false;
stringInput = false;
// Emit signal to program
emit receivedInput(awaitingIdentifier, value);
}
// Program produced output
void PseudoIO::output(const QString content) const {
outputDisplay->append(content);
}
void PseudoIO::output(const Value* value) const {
outputDisplay->append(value->toString());
}
void PseudoIO::setCode(QString code) {
codeDisplay->setText(code);
clearHightlights();
}
void PseudoIO::setState(QString state) const {
stateDisplay->setText(state);
}
void PseudoIO::setCurrentLine(int position) const {
QTextCursor cursor(codeDisplay->document());
QTextEdit::ExtraSelection highlight;
highlight.cursor = cursor;
try {
highlight.cursor.setPosition(position);
} catch (const QString) {
return;
}
highlight.cursor.movePosition(QTextCursor::StartOfLine);
highlight.cursor.movePosition(QTextCursor::EndOfLine);
highlight.format.setProperty(QTextFormat::FullWidthSelection, true);
highlight.format.setBackground(CURRENT_HIGHLIGHT);
QList<QTextEdit::ExtraSelection> currentHighlight;
currentHighlight.append(highlight);
codeDisplay->setExtraSelections(errorHighlights + currentHighlight);
}
void PseudoIO::setErrorLines(const QList<int>& positions) {
QTextCursor cursor(codeDisplay->document());
for (int position : positions) {
QTextEdit::ExtraSelection highlight;
highlight.cursor = cursor;
highlight.cursor.setPosition(position);
highlight.cursor.movePosition(QTextCursor::StartOfLine);
highlight.cursor.movePosition(QTextCursor::EndOfLine);
highlight.format.setProperty(QTextFormat::FullWidthSelection, true);
highlight.format.setBackground(ERROR_HIGHLIGHT);
errorHighlights.append(highlight);
}
codeDisplay->setExtraSelections(errorHighlights);
}
void PseudoIO::addErrorLine(int position) {
QList<int> positions;
positions.append(position);
setErrorLines(positions);
}
void PseudoIO::setAst(QString ast) const {
astDisplay->setText(ast);
}
void PseudoIO::clear() const {
codeDisplay->clear();
outputDisplay->clear();
astDisplay->clear();
stateDisplay->clear();
}
void PseudoIO::clearOutput() const {
outputDisplay->clear();
}
void PseudoIO::clearAst() const {
astDisplay->clear();
}
void PseudoIO::clearInput() const {
commandInput->clear();
}
void PseudoIO::clearState() const {
stateDisplay->clear();
}
void PseudoIO::clearHightlights() {
errorHighlights.clear();
QList<QTextEdit::ExtraSelection> highlights;
codeDisplay->setExtraSelections(highlights);
}
void PseudoIO::reset() {
awaitingInput = stringInput = false;
commandInput->clear();
}