Add JSONLexer

2 files changed, 70 insertions, 4 deletions

diff --git a/pygments/lexers/_mapping.py b/pygments/lexers/_mapping.py
index 4772a9a0..74f80976 100644
--- a/pygments/lexers/_mapping.py
+++ b/pygments/lexers/_mapping.py
@@ -113,12 +113,13 @@ LEXERS = {
     'IoLexer': ('pygments.lexers.agile', 'Io', ('io',), ('*.io',), ('text/x-iosrc',)),
     'IokeLexer': ('pygments.lexers.agile', 'Ioke', ('ioke', 'ik'), ('*.ik',), ('text/x-iokesrc',)),
     'IrcLogsLexer': ('pygments.lexers.text', 'IRC logs', ('irc',), ('*.weechatlog',), ('text/x-irclog',)),
+    'JSONLexer': ('pygments.lexers.web', 'JSON', ('json',), ('*.json',), ('application/json',)),
     'JadeLexer': ('pygments.lexers.web', 'Jade', ('jade', 'JADE'), ('*.jade',), ('text/x-jade',)),
     'JavaLexer': ('pygments.lexers.compiled', 'Java', ('java',), ('*.java',), ('text/x-java',)),
     'JavascriptDjangoLexer': ('pygments.lexers.templates', 'JavaScript+Django/Jinja', ('js+django', 'javascript+django', 'js+jinja', 'javascript+jinja'), (), ('application/x-javascript+django', 'application/x-javascript+jinja', 'text/x-javascript+django', 'text/x-javascript+jinja', 'text/javascript+django', 'text/javascript+jinja')),
     'JavascriptErbLexer': ('pygments.lexers.templates', 'JavaScript+Ruby', ('js+erb', 'javascript+erb', 'js+ruby', 'javascript+ruby'), (), ('application/x-javascript+ruby', 'text/x-javascript+ruby', 'text/javascript+ruby')),
     'JavascriptGenshiLexer': ('pygments.lexers.templates', 'JavaScript+Genshi Text', ('js+genshitext', 'js+genshi', 'javascript+genshitext', 'javascript+genshi'), (), ('application/x-javascript+genshi', 'text/x-javascript+genshi', 'text/javascript+genshi')),
-    'JavascriptLexer': ('pygments.lexers.web', 'JavaScript', ('js', 'javascript'), ('*.js', '*.json'), ('application/javascript', 'application/x-javascript', 'text/x-javascript', 'text/javascript', 'application/json')),
+    'JavascriptLexer': ('pygments.lexers.web', 'JavaScript', ('js', 'javascript'), ('*.js',), ('application/javascript', 'application/x-javascript', 'text/x-javascript', 'text/javascript')),
     'JavascriptPhpLexer': ('pygments.lexers.templates', 'JavaScript+PHP', ('js+php', 'javascript+php'), (), ('application/x-javascript+php', 'text/x-javascript+php', 'text/javascript+php')),
     'JavascriptSmartyLexer': ('pygments.lexers.templates', 'JavaScript+Smarty', ('js+smarty', 'javascript+smarty'), (), ('application/x-javascript+smarty', 'text/x-javascript+smarty', 'text/javascript+smarty')),
     'JspLexer': ('pygments.lexers.templates', 'Java Server Page', ('jsp',), ('*.jsp',), ('application/x-jsp',)),
diff --git a/pygments/lexers/web.py b/pygments/lexers/web.py
index 148762fd..55e367da 100644
--- a/pygments/lexers/web.py
+++ b/pygments/lexers/web.py
@@ -22,7 +22,7 @@ from pygments.lexers.agile import RubyLexer
 from pygments.lexers.compiled import ScalaLexer
 
 
-__all__ = ['HtmlLexer', 'XmlLexer', 'JavascriptLexer', 'CssLexer',
+__all__ = ['HtmlLexer', 'XmlLexer', 'JavascriptLexer', 'JSONLexer', 'CssLexer',
            'PhpLexer', 'ActionScriptLexer', 'XsltLexer', 'ActionScript3Lexer',
            'MxmlLexer', 'HaxeLexer', 'HamlLexer', 'SassLexer', 'ScssLexer',
            'ObjectiveJLexer', 'CoffeeScriptLexer', 'DuelLexer', 'ScamlLexer',
@@ -36,9 +36,9 @@ class JavascriptLexer(RegexLexer):
 
     name = 'JavaScript'
     aliases = ['js', 'javascript']
-    filenames = ['*.js', '*.json']
+    filenames = ['*.js', ]
     mimetypes = ['application/javascript', 'application/x-javascript',
-                 'text/x-javascript', 'text/javascript', 'application/json']
+                 'text/x-javascript', 'text/javascript', ]
 
     flags = re.DOTALL
     tokens = {
@@ -88,6 +88,71 @@ class JavascriptLexer(RegexLexer):
         ]
     }
 
+class JSONLexer(RegexLexer):
+    """
+    For JSON data structures
+    """
+
+    name = 'JSON'
+    aliases = ['json']
+    filenames = ['*.json']
+    mimetypes = [ 'application/json', ]
+
+    flags = re.DOTALL
+    tokens = {
+        'whitespace': [
+            (r'\s+', Text),
+        ],
+
+        # represents a simple terminal value
+        'simplevalue':[
+            (r'(true|false|null)\b', Keyword.Constant),
+            (r'-?[0-9]+', Number.Integer),
+            (r'"(\\\\|\\"|[^"])*"', String.Double),
+        ],
+
+
+        # the right hand side of an object, after the attribute name
+        'objectattribute': [
+            include('value'),
+            (r':', Punctuation),
+            # comma terminates the attribute but expects more
+            (r',', Punctuation, '#pop'),
+            # a closing bracket terminates the entire object, so pop twice
+            (r'}', Punctuation, ('#pop', '#pop')),
+        ],
+
+        # a json object - { attr, attr, ... }
+        'objectvalue': [
+            include('whitespace'),
+            (r'"(\\\\|\\"|[^"])*"', Name.Tag, 'objectattribute'),
+            (r'}', Punctuation, '#pop'),
+        ],
+
+        # json array - [ value, value, ... }
+        'arrayvalue': [
+            include('whitespace'),
+            include('value'),
+            (r',', Punctuation),
+            (r']', Punctuation, '#pop'),
+        ],
+
+        # a json value - either a simple value or a complex value (object or array)
+        'value': [
+            include('whitespace'),
+            include('simplevalue'),
+            (r'{', Punctuation, 'objectvalue'),
+            (r'\[', Punctuation, 'arrayvalue'),
+        ],
+
+
+        # the root of a json document whould be a value
+        'root': [
+            include('value'),
+        ],
+
+    }
+
 
 class ActionScriptLexer(RegexLexer):
     """