simponic/cps-interpreter
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colored repl

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This commit is contained in:
Lizzy Hunt 2024-02-28 15:18:38 -07:00
parent 55c00566b0
commit 3d3942a80f
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GPG Key ID: E835BD4B08CCAF96
3 changed files with 20 additions and 10 deletions
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2
src/args.ts
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@ -2,10 +2,12 @@ const argv = require('minimist')(process.argv.slice(2));
export type Args = {
devMode: boolean;
debug: boolean;
repl: boolean;
};
export const args: Args = {
repl: argv.repl ?? false,
devMode: argv.dev ?? false,
debug: argv.debug ?? false,
};

2
src/index.ts
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@ -31,7 +31,7 @@ const devMode = async (logger: TracingLogger) => {
};
export const main = async (args: Args) => {
if (args.devMode) {
if (args.devMode || args.debug) {
LOG_LEVELS.push('debug');
}

26
src/repl.ts
View File

@ -5,7 +5,8 @@ import { peggyParse } from './parser';
import { evaluate } from './interpreter';
// cool asci logo for CPS
const LOGO = `
const LOGO = `\x1b[33m
simponic's
_______ ________ ______ _______ __
/ \\ / | / \\ / \\ / |
$$$$$$$ |$$$$$$$$/ /$$$$$$ |$$$$$$$ |$$ |
@ -15,11 +16,10 @@ $$$$$$$ |$$$$$/ $$ | __ $$$$$$$/ $$ |
$$ | $$ |$$ |_____ $$ \\__/ |$$ | $$ |_____
$$ | $$ |$$ |$$ $$/ $$ | $$ |
$$/ $$/ $$$$$$$$/ $$$$$$/ $$/ $$$$$$$$/
`;
\x1b[0m`;
const HELP = `
This is the CPS REPL. You can enter CPS programs and see the result of evaluating them.
This is the CPS REPL. You can enter CPS programs and view the result of evaluating them.
This REPL supports multi-line input. To end a multi-line input, enter an empty line.
Commands:
@ -31,9 +31,9 @@ const HELP = `
this Intermediate Representation.
Example:
~> PRIMOP(+, [INT 1, INT 2], [result], [
\x1b[34m ~>\x1b[0m\x1b[32m PRIMOP(+, [INT 1, INT 2], [result], [
| APP(LABEL id, [VAR result])
| ])
| ])\x1b[0m
`;
export const doRepl = async (
@ -42,19 +42,24 @@ export const doRepl = async (
rl = readline.createInterface({ input, output }),
): Promise<any> => {
if (prompt === 0) {
logger.info('welcome to recpl (read eval continue print loop) :)' + LOGO);
logger.info(
'welcome to recpl (read eval continue print loop) ʕ•́ᴥ•̀ʔっ' + LOGO,
);
}
const promptString = `[ ${prompt} ] ~> `;
const lines: string[] = [await rl.question(promptString)];
const coloredPrompt = `\x1b[0m[\x1b[33m ${prompt} \x1b[0m]\x1b[34m ~> \x1b[0m\x1b[32m`;
const lines: string[] = [await rl.question(coloredPrompt)];
while (lines.at(-1)) {
const line = lines.at(-1)!;
if (lines.length === 1 && line === 'help') {
process.stdout.write('\x1b[0m');
logger.info(HELP);
return doRepl(logger, prompt + 1, rl);
}
if (line === 'exit') {
process.stdout.write('\x1b[0m');
logger.info('Exiting REPL...');
rl.close();
return;
@ -66,12 +71,15 @@ export const doRepl = async (
}
const program = lines.slice(0, -1).join('\n');
process.stdout.write('\x1b[0m');
try {
const ast = peggyParse(program);
logger.debug('AST: ' + JSON.stringify(ast, null, 2));
const result = await evaluate(ast, logger.createChild('evaluate'));
logger.info('Result: ' + JSON.stringify(result, null, 2) + '\n');
logger.info(
'Result: \n\x1b[36m' + JSON.stringify(result, null, 2) + '\x1b[0m\n',
);
} catch (e) {
logger.error(e!.toString() + '\n');
}