1 files changed, 54 insertions, 0 deletions
diff --git a/trunk/src/examples/indentedGrammarExample.py b/trunk/src/examples/indentedGrammarExample.py
new file mode 100644
index 0000000..442e6a4
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+++ b/trunk/src/examples/indentedGrammarExample.py
@@ -0,0 +1,54 @@
+# indentedGrammarExample.py
+#
+# Copyright (c) 2006,2016  Paul McGuire
+#
+# A sample of a pyparsing grammar using indentation for 
+# grouping (like Python does).
+#
+# Updated to use indentedBlock helper method.
+#
+
+from pyparsing import *
+
+data = """\
+def A(z):
+  A1
+  B = 100
+  G = A2
+  A2
+  A3
+B
+def BB(a,b,c):
+  BB1
+  def BBA():
+    bba1
+    bba2
+    bba3
+C
+D
+def spam(x,y):
+     def eggs(z):
+         pass
+"""
+
+
+indentStack = [1]
+stmt = Forward()
+suite = indentedBlock(stmt, indentStack)
+
+identifier = Word(alphas, alphanums)
+funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
+funcDef = Group( funcDecl + suite )
+
+rvalue = Forward()
+funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
+rvalue << (funcCall | identifier | Word(nums))
+assignment = Group(identifier + "=" + rvalue)
+stmt << ( funcDef | assignment | identifier )
+
+module_body = OneOrMore(stmt)
+
+print(data)
+parseTree = module_body.parseString(data)
+parseTree.pprint()
+