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Added a result history to REPL #1120

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Added a result history to REPL #1120

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7adb442
REPL History
May 28, 2011
0b196ad
Fixed REPL off
May 28, 2011
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20 changes: 19 additions & 1 deletion lib/repl.js
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Original file line number Original file line Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@ module.paths = require('module')._nodeModulePaths(module.filename);
// Can overridden with custom print functions, such as `probe` or `eyes.js` // Can overridden with custom print functions, such as `probe` or `eyes.js`
exports.writer = util.inspect; exports.writer = util.inspect;


var resultCache;


function REPLServer(prompt, stream) { function REPLServer(prompt, stream) {
var self = this; var self = this;
Expand Down Expand Up @@ -150,7 +151,7 @@ function REPLServer(prompt, stream) {
// '{ a : 1 }' // '{ a : 1 }'
// and statements e.g. // and statements e.g.
// 'for (var i = 0; i < 10; i++) console.log(i);' // 'for (var i = 0; i < 10; i++) console.log(i);'

self.context.$ = resultCache;
var ret, success = false; var ret, success = false;
try { try {
// First we attempt to eval as expression with parens. // First we attempt to eval as expression with parens.
Expand All @@ -169,6 +170,9 @@ function REPLServer(prompt, stream) {
} }


if (ret !== undefined) { if (ret !== undefined) {
if (resultCache) {
resultCache.unshift(ret);
}
self.context._ = ret; self.context._ = ret;
self.outputStream.write(exports.writer(ret) + '\n'); self.outputStream.write(exports.writer(ret) + '\n');
} }
Expand Down Expand Up @@ -546,6 +550,20 @@ function defineDefaultCommands(repl) {
this.displayPrompt(); this.displayPrompt();
} }
}); });

repl.defineCommand('$', {
help:'Toggle the results array in $',
action:function() {
if (resultCache) {
resultCache = undefined;
this.outputStream.write('$ result array off\n');
} else {
resultCache = [];
this.outputStream.write('$ result array on\n');
}
this.displayPrompt();
}
});
} }




Expand Down