116 lines
2.8 KiB
TypeScript
116 lines
2.8 KiB
TypeScript
import { parse } from "./notcl";
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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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* "Mode" of the environment a script runs in; determines access to mutability features and such.
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*
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* "action": response to a UI action; allowed to modify card fields and access time and random numbers.
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*
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* "render": deterministic generation of display markup from card and workspace state; can only modify temporary variables.
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*/
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type ScriptType = "action" | "render";
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/**
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* State for running a script in.
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*/
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type Vm = {
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/** Mutability status */
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mode: ScriptType;
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/** Markup to render / output */
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output: string;
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};
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/**
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* @param {Vm} state VM state
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* @param {string} code Script to run
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* @returns {string} Markup to render / output
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*/
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function renderCard(state, code) {
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const script = parse(code);
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if (script[0]) {
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state.output = JSON.stringify(script[1], null, 2);
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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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* @type {Card}
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*/
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let theCard = {
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id: 100,
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fields: {},
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code: 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.
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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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`,
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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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const vm = {
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mode: /** @type {ScriptType} */ "render",
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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(state, display, debugDisplay);
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