151 lines
3.5 KiB
TypeScript
151 lines
3.5 KiB
TypeScript
import { ALL as HTML } from "./lib/html";
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import { parse } from "./parser";
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import { runNoctl, Vm } from "./vm";
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import { AsHtml, AsText, TextPiece } from "./words";
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/**
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* Basic unit of information, also an "actor" in the programming system
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*/
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type Card = {
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/** Unique identifier */
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id: number;
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/** Key-value properties on the card */
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fields: Record<string, string>;
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/** Eventually: a markdown string containing code, but for now, just code */
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code: string;
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};
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/**
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* Updates a card's fields
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* @param state VM state
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* @param card
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* @param fields
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*/
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function parseFields(card: Card, fields: string) {
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const script = parse(fields);
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const newFields: Record<string, string> = {};
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if (script[0]) {
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script[1].forEach(([name, value = undefined]) => {
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if (name != undefined) {
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newFields[AsText(name as TextPiece)] = value
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? AsText(value as TextPiece)
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: "";
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}
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});
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card.fields = newFields;
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} else {
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console.error(script[1]);
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}
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}
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/**
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* @param state VM state
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* @param code Script to run
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* @returns Markup to render / output
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*/
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function renderCard(state: Vm, code: string) {
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const script = parse(code);
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if (script[0]) {
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runNoctl(state, script[1], (word) => (state.output += AsHtml(word) + "\n"));
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} else {
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state.output = script[1];
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}
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return state.output;
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}
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/**
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* Global state: a single card
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*/
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let theCard: Card = {
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id: 100,
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fields: {},
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code: "",
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};
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const TEXTAREA_STYLE: Partial<CSSStyleDeclaration> = {
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display: "block",
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width: "100%",
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};
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const fieldInput = document.createElement("textarea");
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Object.assign(fieldInput.style, TEXTAREA_STYLE, { height: "8em" });
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fieldInput.value = String.raw`
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title "Hello, World!"
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`.trim();
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const codeInput = document.createElement("textarea");
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Object.assign(codeInput.style, TEXTAREA_STYLE, { height: "20em" });
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codeInput.value = String.raw`
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h1 "Hello, World!"
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para [2 + 2]
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block {
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This is a paragraph of text, with one [b bold] word. Yes, this means there has to be some magic in text processing... <b>this</b> won't work.
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}
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block -red "Beware!"
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para "All text should be quoted, it's clearer that way. & blockquotes already should contain paragraphs. (maybe normalize nested paragraphs)"
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block {
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First block
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} {
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Second block
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Is this markdown-parsed?
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[button "No we want to render UI" \\{noop}]
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} {
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Since we want escapes to work, these blocks [i will] be subject to substitutions, maybe via a relaxed bareWordTmpl.
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}
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# A comment
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para {
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line endings escaped\
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one slash
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not escaped if \\
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two slashes
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escaped with a slash if \\\
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three slashes
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not escaped with two slashes if \\\\
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four slashes
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escaped with two slashes if \\\\\
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five slashes
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not escaped with three slashes if \\\\\\
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six slashes
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}
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`.trim();
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const rerender = Object.assign(document.createElement("button"), {
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onclick: () => render(),
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textContent: "Render",
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});
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const state = document.createElement("pre");
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const display = document.createElement("blockquote");
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const debugDisplay = document.createElement("pre");
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function render() {
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parseFields(theCard, fieldInput.value);
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theCard.code = codeInput.value;
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const vm: Vm = {
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mode: "render",
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commands: { ...HTML },
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output: "",
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};
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const html = renderCard(vm, theCard.code);
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state.textContent = JSON.stringify(theCard, null, 2);
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display.innerHTML = html;
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debugDisplay.textContent = html;
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}
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render();
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document.body.append(
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fieldInput,
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codeInput,
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rerender,
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state,
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display,
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debugDisplay
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);
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