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MalachScript
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Implements scrolling in the InputWindow of the REPL.
continuous-integration/drone/push Build is passing Details

This commit is contained in:
Deukhoofd 2021-01-05 15:51:59 +01:00
parent b73bfe6482
commit 340d37f4a1
Signed by: Deukhoofd
GPG Key ID: F63E044490819F6F
2 changed files with 113 additions and 34 deletions
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130
repl/InputWindow.hpp
View File

@ -13,7 +13,8 @@ namespace MalachScriptRepl {
int _row = 0;
int _col = 0;
int _rightPos = 0;
[[maybe_unused]] int _scroll = 0;
int _scroll = 0;
int _lineCount;
std::function<void(const std::vector<std::u8string>&)> _onChange;
@ -21,6 +22,7 @@ namespace MalachScriptRepl {
InputWindow(int height, int width, int y, int x) {
_window = newwin(height, width, y, x);
keypad(_window, true);
_lineCount = height;
}
inline void RegisterOnChange(std::function<void(const std::vector<std::u8string>&)> listener) {
@ -37,7 +39,13 @@ namespace MalachScriptRepl {
return std::pair<int, int>(row, col);
}
inline void MoveCursorPosition(int row, int col) { wmove(_window, row, col); }
inline void MoveCursorPosition(int row, int col) {
auto& line = _lines[row + _scroll];
if (col > (int)line.size()) {
col = line.size();
}
wmove(_window, row, col);
}
inline void MoveCursorLeft() {
if (_col > 0) {
@ -47,7 +55,7 @@ namespace MalachScriptRepl {
}
inline void MoveCursorRight() {
auto& line = _lines[_row];
auto& line = _lines[_row + _scroll];
if (_col < (int)line.size()) {
wmove(_window, _row, ++_col);
_rightPos = _col;
@ -57,47 +65,57 @@ namespace MalachScriptRepl {
inline void MoveCursorUp() {
if (_row > 0) {
_col = _rightPos;
if (_col > (int)_lines[_row - 1].size()) {
_col = (int)_lines[_row - 1].size();
if (_col > (int)_lines[_row - 1 + _scroll].size()) {
_col = (int)_lines[_row - 1 + _scroll].size();
}
wmove(_window, --_row, _col);
} else {
ScrollUp();
}
}
inline void MoveCursorDown() {
if (_row < (int)_lines.size() - 1) {
if (_row < _lineCount - 1 && _row + _scroll < (int)_lines.size() - 1) {
_col = _rightPos;
if (_col > (int)_lines[_row + 1].size()) {
_col = (int)_lines[_row + 1].size();
if (_col > (int)_lines[_row + 1 + _scroll].size()) {
_col = (int)_lines[_row + 1 + _scroll].size();
}
wmove(_window, ++_row, _col);
} else {
ScrollDown();
}
}
inline void Backspace() {
if (_col > 0) {
mvwdelch(_window, _row, --_col);
auto& line = _lines[_row];
line = line.erase(_col, 1);
_onChange(_lines);
auto& line = _lines[_row + _scroll];
if (_col < (int)line.size()) {
line = line.erase(_col, 1);
_onChange(_lines);
}
}
}
inline void Return() {
_lines.insert(_lines.begin() + _row + 1, u8"");
_row++;
_col = 0;
for (size_t i = _row - 1; i < _lines.size(); i++) {
wmove(_window, i, 0);
wclrtoeol(_window);
waddstr(_window, (char*)_lines[i].c_str());
_lines.insert(_lines.begin() + _row + _scroll + 1, u8"");
if (_row >= _lineCount - 1) {
ScrollDown();
} else {
_row++;
_col = 0;
for (size_t i = _row - 1; i < _lines.size(); i++) {
wmove(_window, i, 0);
wclrtoeol(_window);
waddstr(_window, (char*)_lines[i].c_str());
}
wmove(_window, _row, _col);
}
wmove(_window, _row, _col);
}
inline void Tab() {
wmove(_window, _row, 0);
wclrtoeol(_window);
auto& line = _lines[_row];
auto& line = _lines[_row + _scroll];
if ((int)line.length() <= _col) {
line += u8" ";
} else {
@ -113,19 +131,20 @@ namespace MalachScriptRepl {
}
inline void GoToEndOfLine() {
_col = _lines[_row].size();
_col = _lines[_row + _scroll].size();
_rightPos = _col;
wmove(_window, _row, _col);
}
inline void GoToStartOfLine() {
_col = _lines[_row].size();
_rightPos = _col;
_col = 0;
_rightPos = 0;
wmove(_window, _row, _col);
}
inline void Input(int c) {
wmove(_window, _row, 0);
auto& line = _lines[_row];
auto& line = _lines[_row + _scroll];
if ((int)line.length() <= _col) {
line += (char8_t)c;
} else {
@ -138,15 +157,66 @@ namespace MalachScriptRepl {
_onChange(_lines);
}
inline void ResetText() {
auto pos = GetCursorPosition();
wclear(_window);
for (size_t i = 0; i < _lines.size() && (int)i < _lineCount; i++) {
wmove(_window, i, 0);
waddnstr(_window, (char*)_lines[i + _scroll].c_str(), _lines[i + _scroll].size());
}
MoveCursorPosition(pos.first, pos.second);
Refresh();
}
inline void ScrollDown() {
if (_scroll + _row < (int)_lines.size() - 1) {
_scroll++;
ResetText();
_col = _rightPos;
if (_col > (int)_lines[_row + _scroll].size()) {
_col = (int)_lines[_row + _scroll].size();
}
wmove(_window, _row, _col);
}
}
inline void ScrollUp() {
if (_scroll <= 0) {
return;
}
_scroll--;
ResetText();
_col = _rightPos;
if (_col > (int)_lines[_row + _scroll].size()) {
_col = (int)_lines[_row + _scroll].size();
}
wmove(_window, _row, _col);
}
inline void SetScriptWithDiagnostics(const std::u8string& script,
const MalachScript::Diagnostics::Diagnostic* diag) {
auto yx = GetCursorPosition();
Clear();
size_t linenum = 0;
size_t index = 0;
size_t linestart = 0;
std::istringstream f((char*)script.data());
std::string line;
while (std::getline(f, line)) {
if ((int)linenum == _scroll) {
linestart = index;
}
index += line.size() + 1;
linenum++;
}
if (diag != nullptr) {
auto start = diag->GetSpan().GetStart();
auto end = diag->GetSpan().GetEnd() + 1;
auto start = diag->GetSpan().GetStart() - linestart;
auto end = diag->GetSpan().GetEnd() - linestart;
if (end > script.size()) {
end = script.size();
if (start == end && start > 0) {
@ -154,11 +224,11 @@ namespace MalachScriptRepl {
}
}
waddnstr(_window, (char*)script.c_str(), start);
waddnstr(_window, (char*)script.substr(linestart).data(), start);
wattron(_window, COLOR_PAIR(1));
waddnstr(_window, (char*)script.substr(start).data(), end - start);
waddnstr(_window, (char*)script.substr(start + linestart).data(), end - start);
wattroff(_window, COLOR_PAIR(1));
waddnstr(_window, (char*)script.substr(end).data(), script.size() - end);
waddnstr(_window, (char*)script.substr(end + linestart).data(), script.size() - end);
if (start >= script.size() - 1) {
wattron(_window, COLOR_PAIR(1));
@ -166,7 +236,7 @@ namespace MalachScriptRepl {
wattroff(_window, COLOR_PAIR(1));
}
} else {
waddstr(_window, (char*)script.c_str());
waddstr(_window, (char*)script.substr(linestart).data());
}
MoveCursorPosition(yx.first, yx.second);
Refresh();

17
repl/main.cpp
View File

@ -1,3 +1,4 @@
#include <fstream>
#include <ncurses.h>
#include <sstream>
#include "../src/Parser/Lexer/Lexer.hpp"
@ -8,14 +9,22 @@
void ParseAndUpdate(const std::vector<std::u8string>& lines, WINDOW* diagnosticsWindow, WINDOW* parsedWindow,
MalachScriptRepl::InputWindow& inputWindow) {
std::u8string script;
for (const auto& line : lines) {
script += line;
script += '\n';
for (size_t i = 0; i < lines.size(); i++) {
script += lines[i];
if (i != lines.size() - 1) {
script += '\n';
}
}
std::ofstream outfile;
outfile.open("script.ms", std::ios::out | std::ios::trunc);
outfile << (char*)script.data();
outfile.close();
auto logger = MalachScript::Diagnostics::Logger();
auto lexer = MalachScript::Parser::Lexer(u8"diag", script, &logger);
const auto* firstToken = lexer.Lex();
[[maybe_unused]] const auto* parsedResult = MalachScript::Parser::Parser::Parse(firstToken, u8"diag", &logger);
const auto* parsedResult = MalachScript::Parser::Parser::Parse(firstToken, u8"diag", &logger);
const MalachScript::Diagnostics::Diagnostic* diag = nullptr;
wclear(diagnosticsWindow);