Faster strings

Author: mcollina

bench.js

@@ -22,13 +22,36 @@ const schema = {
   }
 }
 
+const arraySchema = {
+  title: 'array schema',
+  type: 'array',
+  items: schema
+}
+
 const obj = {
   firstName: 'Matteo',
   lastName: 'Collina',
   age: 32
 }
 
+const multiArray = [
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj,
+  obj
+]
+
 const stringify = require('.')(schema)
+const stringifyArray = require('.')(arraySchema)
 
 suite.add('JSON.stringify', function () {
   JSON.stringify(obj)
@@ -42,6 +65,18 @@ suite.add('fast-safe-stringify', function () {
   safeStringify(obj)
 })
 
+suite.add('JSON.stringify array', function () {
+  JSON.stringify(multiArray)
+})
+
+suite.add('fast-json-stringify array', function () {
+  stringifyArray(multiArray)
+})
+
+suite.add('fast-safe-stringify array', function () {
+  safeStringify(multiArray)
+})
+
 suite.on('complete', print)
 
 suite.run()

index.js

@@ -43,8 +43,6 @@ function build (schema) {
     return ${main}
   `
 
-  // console.log(code)
-
   return (new Function(code))()
 }
 
@@ -75,17 +73,19 @@ function $asString (str) {
   var result = ''
   var last = 0
   var l = str.length
-  for (var i = 0; i < l; i++) {
-    if (str[i] === '"') {
-      result += str.slice(last, i) + '\\"'
-      last = i + 1
-    }
+  var i
+
+  while ((i = str.indexOf('"')) >= 0 && i < l) {
+    result += str.slice(last, i) + '\\"'
+    last = i + 1
   }
+
   if (last === 0) {
     result = str
   } else {
     result += str.slice(last)
   }
+
   return '"' + result + '"'
 }