fast-json - npm Package Compare versions

Comparing version 1.0.0 to 1.0.1

lib/FastJson.js

@@ -5,2 +5,15 @@ 'use strict';
 
+var OPEN_BRACE = '{'.charCodeAt(0);
+var CLOSE_BRACE = '}'.charCodeAt(0);
+var OPEN_BRACKET = '['.charCodeAt(0);
+var CLOSE_BRACKET = ']'.charCodeAt(0);
+var QUOTE = '"'.charCodeAt(0);
+var SPACE = ' '.charCodeAt(0);
+var NEW_LINE = '\n'.charCodeAt(0);
+var CARRIAGE_RETURN = '\r'.charCodeAt(0);
+var TAB = '\t'.charCodeAt(0);
+var COLON =  ':'.charCodeAt(0);
+var COMMA = ','.charCodeAt(0);
+var BACKSLASH = '\\'.charCodeAt(0);
+
 class FastJson {
@@ -10,3 +23,3 @@ constructor(options) {
 
-    this._stack = [];
+    this._stack = new Array(16);
     this._level = -1;
@@ -18,3 +31,2 @@
     this._events = new EventEmitter();
-    this._paths = new Set();
     this._subPaths = new Set(['/']);
@@ -25,6 +37,3 @@ }
     var processedPath = this._processPath(path);
-    this._paths.add(processedPath);
-
     this._addToSubPaths(processedPath);
-
     this._events.on(processedPath, listener);
@@ -35,21 +44,21 @@ }
     for (var i = 0; i < data.length; i++) {
-      switch (data[i]) {
-        case '{':
+      switch (data.charCodeAt(i)) {
+        case OPEN_BRACE:
           i = this._onOpenBrace(data, i);
           break;
-        case '[':
+        case OPEN_BRACKET:
           i = this._onOpenBracket(data, i);
           break;
-        case '}': case ']':
+        case CLOSE_BRACE: case CLOSE_BRACKET:
           this._onCloseBraceOrBracket(data, i);
           break;
-        case '"':
+        case QUOTE:
           i = this._onQuote(data, i);
           break;
-        case '\t' : case '\r' : case '\n' : case ' ':
+        case TAB : case CARRIAGE_RETURN : case NEW_LINE : case SPACE:
           break;
-        case ':':
+        case COLON:
           this._postColon = true;
           break;
-        case ',':
+        case COMMA:
           this._onComma();
@@ -71,3 +80,3 @@ break;
       this._level--;
-      return this._skipBlock(data, index, '{', '}');
+      return this._skipBlock(data, index, OPEN_BRACE, CLOSE_BRACE);
     }
@@ -95,3 +104,3 @@
       this._level--;
-      return this._skipBlock(data, index, '[', ']');
+      return this._skipBlock(data, index, OPEN_BRACKET, CLOSE_BRACKET);
     }
@@ -135,5 +144,3 @@
       }
-    }
-
-    if (frame.type === 'array') {
+    } else if (frame.type === 'array') {
       path = this._resolvePathForPrimitiveArray(data);
@@ -170,5 +177,3 @@
       }
-    }
-
-    if (frame.type === 'array') {
+    } else if (frame.type === 'array') {
       path = this._resolvePathForPrimitiveArray(data);
@@ -191,9 +196,12 @@
     while (index < data.length) {
-      if (data[index] === '"') {
-        var strEnd = this._parseString(data, index);
-        index += strEnd - index;
-      } else if (data[index] === openChar) {
-        blockDepth++;
-      } else if (data[index] === closeChar) {
-        blockDepth--;
+      switch (data.charCodeAt(index)) {
+        case QUOTE:
+          var strEnd = this._parseString(data, index);
+          index += strEnd - index;
+          break;
+        case openChar:
+          blockDepth++;
+          break;
+        case closeChar:
+          blockDepth--;
       }
@@ -213,3 +221,4 @@
     index++;
-    while (data[index] !== '"' || (data[index - 1] === '\\' && data[index - 2] !== '\\')) {
+    while (data.charCodeAt(index) !== QUOTE || (data.charCodeAt(index - 1) === BACKSLASH &&
+        data.charCodeAt(index - 2) !== BACKSLASH)) {
       index++;
@@ -222,3 +231,4 @@ }
   _parsePrimitive(data, index) {
-    while (data[index] !== ']' && data[index] !== '}' && data[index] !== ',') {
+    while (data.charCodeAt(index) !== CLOSE_BRACKET && data.charCodeAt(index) !== CLOSE_BRACE &&
+        data.charCodeAt(index) !== COMMA) {
       index++;
@@ -241,5 +251,3 @@ }
 
-    if (parentType === 'object') {
-      return data.substring(this._lastString.start, this._lastString.end);
-    }
+    return data.substring(this._lastString.start, this._lastString.end);
   }
@@ -258,3 +266,3 @@
   _hasListeners(processedPath) {
-    return this._paths.has(processedPath);
+    return this._events.listenerCount(processedPath) > 0;
   }
@@ -264,4 +272,3 @@
     if (this._level === 0) {
-      return this._stack[this._level].path +
-        data.substring(this._lastString.start, this._lastString.end);
+      return '/' + data.substring(this._lastString.start, this._lastString.end);
     }
@@ -275,3 +282,3 @@
     if (this._level === 0) {
-      return this._stack[this._level].path + this._stack[this._level].index;
+      return '/' + this._stack[this._level].index;
     }
@@ -296,7 +303,5 @@
 
-    for (var i = 0; i < tokens.length; i++) {
-      if (tokens[i]) {
-        aux += '/' + tokens[i];
-        this._subPaths.add(aux);
-      }
+    for (var i = 1; i < tokens.length; i++) {
+      aux += '/' + tokens[i];
+      this._subPaths.add(aux);
     }
@@ -303,0 +308,0 @@ }

package.json

 {
   "name": "fast-json",
   "description": "A fast json stream parser.",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "author": "Alejandro Santiago Nieto",
@@ -6,0 +6,0 @@ "license": "MIT",

README.md

@@ -45,3 +45,3 @@ fast-json
 
-* fast-json: 0.89s / 198MB RAM
+* fast-json: 0.71s / 198MB RAM
 * JSON.parse: 1.9s / 640MB RAM
@@ -52,6 +52,6 @@ * jsonparse: 9.6s / 370MB RAM
 * [**Improvement**] Tolerate malformed JSONs.
-* [**Feature**] Cache chunks to support fragmentation (value starts in a previous chunk).
-* [**Feature**] Make FastJson a Node.js Stream (is this worth it?).
+* [**Feature**] Allow Buffers.
 * [**Feature**] Process wildcards in paths.
+* [**Feature**] Public method to cancel actual write().
 * [**Documentation**] Document public interface and create branch gh-pages using *jsdoc*.
 * [**Documentation**] More real life testing and examples.

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Fixed alerts

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Major refactor

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Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

9139

increased by4.68%

Lines of code

235

increased by3.52%

Number of medium supply chain risk alerts

0

decreased by-100%

No dependency changes