dylan/fantasy-console
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More repl improvements

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dylan
2023-05-03 16:47:09 -07:00
parent 1482288b0c
commit ce7da27cc3
3 changed files with 95 additions and 41 deletions
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85
repl.ts
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@ -5,18 +5,22 @@ import { runCode } from "./runcode.ts";
const lineHeight = 6;
const history: Array<string> = [];
let historyIndex = history.length;
let textLinesAbove: Array<string> = [];
let maxLineLen = 0;
let line = "";
let currentLine = "";
let index = 0;
let y = 0;
let result = "";
export const resetRepl = () => {
historyIndex = history.length;
textLinesAbove.length = 0;
maxLineLen = 0;
currentLine = "";
index = 0;
}
const update = () => {
if (result) {
console.log("result:", result);
y += lineHeight; // TODO: multiply if multiline
result = "";
}
for (const key of getKeysPressed()) {
let char = String.fromCharCode(key).toLowerCase();
if (shiftKeyDown()) {
@ -27,11 +31,11 @@ const update = () => {
}
}
if (char in font) {
line = line.slice(0, index)+char+line.slice(index);
currentLine = currentLine.slice(0, index)+char+currentLine.slice(index);
index += 1;
} else if (key === K.BACKSPACE) {
if (index > 0) {
line = line.slice(0, index-1)+line.slice(index);
currentLine = currentLine.slice(0, index-1)+currentLine.slice(index);
index -= 1;
}
} else if (key === K.ARROW_LEFT) {
@ -41,31 +45,60 @@ const update = () => {
}
} else if (key === K.ARROW_RIGHT) {
index += 1;
if (index > line.length) {
index = line.length;
if (index > currentLine.length) {
index = currentLine.length;
}
} else if (key === K.ARROW_UP) {
historyIndex -= 1;
if (historyIndex < 0) {
historyIndex = -1;
}
const lineAtHistory = history[historyIndex] ?? "";
currentLine = lineAtHistory;
index = currentLine.length;
} else if (key === K.ARROW_DOWN) {
historyIndex += 1;
if (historyIndex > history.length) {
historyIndex = history.length;
}
const lineAtHistory = history[historyIndex] ?? "";
currentLine = lineAtHistory;
index = currentLine.length;
} else if (key === K.ENTER) {
const ran = runCode('return '+line);
console.log('ran:', ran);
result = ran?.toString?.();
history.push(currentLine);
historyIndex = history.length;
textLinesAbove.push("> "+currentLine);
try {
const ran = runCode('return '+currentLine);
const resultString = ran?.toString?.() ?? null;
if (resultString !== null) {
textLinesAbove.push(...resultString.split("\n"))
}
} catch (err) {
textLinesAbove.push(...(err.name+":\n"+err.message).toLowerCase().split("\n"))
}
textLinesAbove = textLinesAbove.slice(-20);
maxLineLen = 0;
line = "";
currentLine = "";
index = 0;
y += lineHeight;
}
}
maxLineLen = Math.max(maxLineLen, line.length);
maxLineLen = Math.max(maxLineLen, currentLine.length);
}
const drawTextAbove = () => {
textLinesAbove.forEach((line, i) => {
faux.draw_rect(0, i*lineHeight, 4*(line.length+1)+1, lineHeight+1, 6);
faux.draw_text(-1, i*lineHeight, line);
});
}
const draw = () => {
if (result) {
faux.draw_rect(0, y, 4*result.length+1, lineHeight+1, 6);
faux.draw_text(0, y, result);
} else {
faux.draw_rect(0, y, 4*(2+maxLineLen+1)+1, lineHeight+1, 6);
faux.draw_rect((2+index)*4, y+1, 4, lineHeight-1, 3);
faux.draw_text(0, y, "> "+line);
}
drawTextAbove();
faux.draw_rect(0, textLinesAbove.length*lineHeight, 4*(2+maxLineLen+1)+1, lineHeight+1, 6);
faux.draw_rect((2+index)*4, textLinesAbove.length*lineHeight+1, 4, lineHeight-1, 3);
faux.draw_text(-1, textLinesAbove.length*lineHeight, "> "+currentLine);
}
export const repl = {