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allow 'await' in the REPL and added os.sleepAsync()

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Fabrice Bellard
2024-01-02 16:09:30 +01:00
parent 8de4538ff3
commit e44b793e38
5 changed files with 123 additions and 48 deletions
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116
repl.js
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@@ -118,6 +118,7 @@ import * as os from "os";
var utf8 = true;
var show_time = false;
var show_colors = true;
var eval_start_time;
var eval_time = 0;
var mexpr = "";
@@ -814,10 +815,8 @@ import * as os from "os";
prompt += ps2;
} else {
if (show_time) {
var t = Math.round(eval_time) + " ";
eval_time = 0;
t = dupstr("0", 5 - t.length) + t;
prompt += t.substring(0, t.length - 4) + "." + t.substring(t.length - 4);
var t = eval_time / 1000;
prompt += t.toFixed(6) + " ";
}
plen = prompt.length;
prompt += ps1;
@@ -1224,37 +1223,6 @@ import * as os from "os";
}
}
function eval_and_print(expr) {
var result;
try {
if (eval_mode === "math")
expr = '"use math"; void 0;' + expr;
var now = (new Date).getTime();
/* eval as a script */
result = std.evalScript(expr, { backtrace_barrier: true });
eval_time = (new Date).getTime() - now;
std.puts(colors[styles.result]);
print(result);
std.puts("\n");
std.puts(colors.none);
/* set the last result */
g._ = result;
} catch (error) {
std.puts(colors[styles.error_msg]);
if (error instanceof Error) {
console.log(error);
if (error.stack) {
std.puts(error.stack);
}
} else {
std.puts("Throw: ");
console.log(error);
}
std.puts(colors.none);
}
}
function cmd_start() {
if (!config_numcalc) {
if (has_jscalc)
@@ -1281,29 +1249,32 @@ import * as os from "os";
}
function readline_handle_cmd(expr) {
handle_cmd(expr);
cmd_readline_start();
if (!handle_cmd(expr)) {
cmd_readline_start();
}
}
/* return true if async termination */
function handle_cmd(expr) {
var colorstate, cmd;
if (expr === null) {
expr = "";
return;
return false;
}
if (expr === "?") {
help();
return;
return false;
}
cmd = extract_directive(expr);
if (cmd.length > 0) {
if (!handle_directive(cmd, expr))
return;
if (!handle_directive(cmd, expr)) {
return false;
}
expr = expr.substring(cmd.length + 1);
}
if (expr === "")
return;
return false;
if (mexpr)
expr = mexpr + '\n' + expr;
@@ -1312,20 +1283,73 @@ import * as os from "os";
level = colorstate[1];
if (pstate) {
mexpr = expr;
return;
return false;
}
mexpr = "";
if (has_bignum) {
BigFloatEnv.setPrec(eval_and_print.bind(null, expr),
/* XXX: async is not supported in this case */
BigFloatEnv.setPrec(eval_and_print_start.bind(null, expr, false),
prec, expBits);
} else {
eval_and_print(expr);
eval_and_print_start(expr, true);
}
level = 0;
return true;
}
function eval_and_print_start(expr, is_async) {
var result;
try {
if (eval_mode === "math")
expr = '"use math"; void 0;' + expr;
eval_start_time = os.now();
/* eval as a script */
result = std.evalScript(expr, { backtrace_barrier: true, async: is_async });
if (is_async) {
/* result is a promise */
result.then(print_eval_result, print_eval_error);
} else {
print_eval_result(result);
}
} catch (error) {
print_eval_error(error);
}
}
function print_eval_result(result) {
eval_time = os.now() - eval_start_time;
std.puts(colors[styles.result]);
print(result);
std.puts("\n");
std.puts(colors.none);
/* set the last result */
g._ = result;
handle_cmd_end();
}
function print_eval_error(error) {
std.puts(colors[styles.error_msg]);
if (error instanceof Error) {
console.log(error);
if (error.stack) {
std.puts(error.stack);
}
} else {
std.puts("Throw: ");
console.log(error);
}
std.puts(colors.none);
handle_cmd_end();
}
function handle_cmd_end() {
level = 0;
/* run the garbage collector after each command */
std.gc();
cmd_readline_start();
}
function colorize_js(str) {