From 27e183a78c8062ed7c2bbb91655a5e56cd697bba Mon Sep 17 00:00:00 2001
From: Cengiz Kaygusuz <cngkaygusuz@gmail.com>
Date: Mon, 20 Nov 2017 20:46:39 -0500
Subject: Move src to root

---
 examples/jsonParser.py | 107 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 examples/jsonParser.py

(limited to 'examples/jsonParser.py')

diff --git a/examples/jsonParser.py b/examples/jsonParser.py
new file mode 100644
index 0000000..f080c6c
--- /dev/null
+++ b/examples/jsonParser.py
@@ -0,0 +1,107 @@
+# jsonParser.py
+#
+# Implementation of a simple JSON parser, returning a hierarchical
+# ParseResults object support both list- and dict-style data access.
+#
+# Copyright 2006, by Paul McGuire
+#
+# Updated 8 Jan 2007 - fixed dict grouping bug, and made elements and
+#   members optional in array and object collections
+#
+# Updated 9 Aug 2016 - use more current pyparsing constructs/idioms
+#
+json_bnf = """
+object 
+    { members } 
+    {} 
+members 
+    string : value 
+    members , string : value 
+array 
+    [ elements ]
+    [] 
+elements 
+    value 
+    elements , value 
+value 
+    string
+    number
+    object
+    array
+    true
+    false
+    null
+"""
+
+from pyparsing import *
+
+def make_keyword(kwd_str, kwd_value):
+    return Keyword(kwd_str).setParseAction(replaceWith(kwd_value))
+TRUE  = make_keyword("true", True)
+FALSE = make_keyword("false", False)
+NULL  = make_keyword("null", None)
+
+LBRACK, RBRACK, LBRACE, RBRACE, COLON = map(Suppress, "[]{}:")
+
+jsonString = dblQuotedString().setParseAction(removeQuotes)
+jsonNumber = pyparsing_common.number()
+
+jsonObject = Forward()
+jsonValue = Forward()
+jsonElements = delimitedList( jsonValue )
+jsonArray = Group(LBRACK + Optional(jsonElements, []) + RBRACK)
+jsonValue << (jsonString | jsonNumber | Group(jsonObject)  | jsonArray | TRUE | FALSE | NULL)
+memberDef = Group(jsonString + COLON + jsonValue)
+jsonMembers = delimitedList(memberDef)
+jsonObject << Dict(LBRACE + Optional(jsonMembers) + RBRACE)
+
+jsonComment = cppStyleComment 
+jsonObject.ignore(jsonComment)
+
+    
+if __name__ == "__main__":
+    testdata = """
+    {
+        "glossary": {
+            "title": "example glossary",
+            "GlossDiv": {
+                "title": "S",
+                "GlossList": 
+                    {
+                    "ID": "SGML",
+                    "SortAs": "SGML",
+                    "GlossTerm": "Standard Generalized Markup Language",
+                    "TrueValue": true,
+                    "FalseValue": false,
+                    "Gravity": -9.8,
+                    "LargestPrimeLessThan100": 97,
+                    "AvogadroNumber": 6.02E23,
+                    "EvenPrimesGreaterThan2": null,
+                    "PrimesLessThan10" : [2,3,5,7],
+                    "Acronym": "SGML",
+                    "Abbrev": "ISO 8879:1986",
+                    "GlossDef": "A meta-markup language, used to create markup languages such as DocBook.",
+                    "GlossSeeAlso": ["GML", "XML", "markup"],
+                    "EmptyDict" : {},
+                    "EmptyList" : []
+                    }
+            }
+        }
+    }
+    """
+
+    import pprint
+    results = jsonObject.parseString(testdata)
+    pprint.pprint( results.asList() )
+    print()
+    def testPrint(x):
+        print(type(x),repr(x))
+    print(list(results.glossary.GlossDiv.GlossList.keys()))
+    testPrint( results.glossary.title )
+    testPrint( results.glossary.GlossDiv.GlossList.ID )
+    testPrint( results.glossary.GlossDiv.GlossList.FalseValue )
+    testPrint( results.glossary.GlossDiv.GlossList.Acronym )
+    testPrint( results.glossary.GlossDiv.GlossList.EvenPrimesGreaterThan2 )
+    testPrint( results.glossary.GlossDiv.GlossList.PrimesLessThan10 )
+
+
-- 
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