You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.7 KiB
68 lines
1.7 KiB
3 years ago
|
var Chainsaw = require('chainsaw');
|
||
|
|
var Lazy = require('lazy');
|
||
|
|
|
||
|
|
module.exports = Prompt;
|
||
|
|
function Prompt (stream) {
|
||
|
|
var waiting = [];
|
||
|
|
var lines = [];
|
||
|
|
var lazy = Lazy(stream).lines.map(String)
|
||
|
|
.forEach(function (line) {
|
||
|
|
if (waiting.length) {
|
||
|
|
var w = waiting.shift();
|
||
|
|
w(line);
|
||
|
|
}
|
||
|
|
else lines.push(line);
|
||
|
|
})
|
||
|
|
;
|
||
|
|
|
||
|
|
var vars = {};
|
||
|
|
return Chainsaw(function (saw) {
|
||
|
|
this.getline = function (f) {
|
||
|
|
var g = function (line) {
|
||
|
|
saw.nest(f, line, vars);
|
||
|
|
};
|
||
|
|
|
||
|
|
if (lines.length) g(lines.shift());
|
||
|
|
else waiting.push(g);
|
||
|
|
};
|
||
|
|
|
||
|
|
this.do = function (cb) {
|
||
|
|
saw.nest(cb, vars);
|
||
|
|
};
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
var util = require('util');
|
||
|
|
if (__filename === process.argv[1]) {
|
||
|
|
var stdin = process.openStdin();
|
||
|
|
Prompt(stdin)
|
||
|
|
.do(function () {
|
||
|
|
util.print('x = ');
|
||
|
|
})
|
||
|
|
.getline(function (line, vars) {
|
||
|
|
vars.x = parseInt(line, 10);
|
||
|
|
})
|
||
|
|
.do(function () {
|
||
|
|
util.print('y = ');
|
||
|
|
})
|
||
|
|
.getline(function (line, vars) {
|
||
|
|
vars.y = parseInt(line, 10);
|
||
|
|
})
|
||
|
|
.do(function (vars) {
|
||
|
|
if (vars.x + vars.y < 10) {
|
||
|
|
util.print('z = ');
|
||
|
|
this.getline(function (line) {
|
||
|
|
vars.z = parseInt(line, 10);
|
||
|
|
})
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
vars.z = 0;
|
||
|
|
}
|
||
|
|
})
|
||
|
|
.do(function (vars) {
|
||
|
|
console.log('x + y + z = ' + (vars.x + vars.y + vars.z));
|
||
|
|
process.exit();
|
||
|
|
})
|
||
|
|
;
|
||
|
|
}
|