enable packrat parsing in all examples using infixNotation

6 files changed, 23 insertions, 5 deletions

diff --git a/examples/bigquery_view_parser.py b/examples/bigquery_view_parser.py
index 085552b..cf23818 100644
--- a/examples/bigquery_view_parser.py
+++ b/examples/bigquery_view_parser.py
@@ -13,6 +13,8 @@ from pyparsing import QuotedString, CharsNotIn, Optional, Group, ZeroOrMore
 from pyparsing import oneOf, delimitedList, restOfLine, cStyleComment
 from pyparsing import infixNotation, opAssoc, Regex, nums
 
+ParserElement.enablePackrat()
+
 
 class BigQueryViewParser:
     """Parser to extract table info from BigQuery view definitions"""
diff --git a/examples/eval_arith.py b/examples/eval_arith.py
index 6a747f3..4f6082f 100644
--- a/examples/eval_arith.py
+++ b/examples/eval_arith.py
@@ -17,8 +17,11 @@ from pyparsing import (
     opAssoc,
     infixNotation,
     Literal,
+    ParserElement,
 )
 
+ParserElement.enablePackrat()
+
 
 class EvalConstant:
     "Class to evaluate a parsed constant or variable"
diff --git a/examples/invRegex.py b/examples/invRegex.py
index f0bfe31..b9d6cfb 100644
--- a/examples/invRegex.py
+++ b/examples/invRegex.py
@@ -30,6 +30,8 @@ from pyparsing import (
     srange,

 )

 

+ParserElement.enablePackrat()

+

 

 class CharacterRangeEmitter:

     def __init__(self, chars):

@@ -279,9 +281,7 @@ def main():
     [ABCDEFG](?:#|##|b|bb)?(?:maj|min|m|sus|aug|dim)?[0-9]?(?:/[ABCDEFG](?:#|##|b|bb)?)?

     (Fri|Mon|S(atur|un)|T(hur|ue)s|Wednes)day

     A(pril|ugust)|((Dec|Nov|Sept)em|Octo)ber|(Febr|Jan)uary|Ju(ly|ne)|Ma(rch|y)

-    """.split(

-        "\n"

-    )

+    """.splitlines()

 

     for t in tests:

         t = t.strip()

diff --git a/examples/simpleArith.py b/examples/simpleArith.py
index af3f904..4539018 100644
--- a/examples/simpleArith.py
+++ b/examples/simpleArith.py
@@ -6,9 +6,12 @@
 #

 # Copyright 2006, by Paul McGuire

 #

-

+import sys

 from pyparsing import *

 

+ParserElement.enablePackrat()

+sys.setrecursionlimit(3000)

+

 integer = Word(nums).setParseAction(lambda t: int(t[0]))

 variable = Word(alphas, exact=1)

 operand = integer | variable

@@ -64,6 +67,11 @@ test = [
     "M*X + B",

     "M*(X + B)",

     "1+2*-3^4*5+-+-6",

+    "(a + b)",

+    "((a + b))",

+    "(((a + b)))",

+    "((((a + b))))",

+    "((((((((((((((a + b))))))))))))))",

 ]

 for t in test:

     print(t)

diff --git a/examples/simpleBool.py b/examples/simpleBool.py
index f47e090..5ff1728 100644
--- a/examples/simpleBool.py
+++ b/examples/simpleBool.py
@@ -12,7 +12,9 @@
 # Copyright 2006, by Paul McGuire

 # Updated 2013-Sep-14 - improved Python 2/3 cross-compatibility

 #

-from pyparsing import infixNotation, opAssoc, Keyword, Word, alphas

+from pyparsing import infixNotation, opAssoc, Keyword, Word, alphas, ParserElement

+

+ParserElement.enablePackrat()

 

 # define classes to be built at parse time, as each matching

 # expression type is parsed

diff --git a/examples/simpleSQL.py b/examples/simpleSQL.py
index a806ad6..ebed658 100644
--- a/examples/simpleSQL.py
+++ b/examples/simpleSQL.py
@@ -19,9 +19,12 @@ from pyparsing import (
     opAssoc,
     restOfLine,
     CaselessKeyword,
+    ParserElement,
     pyparsing_common as ppc,
 )
 
+ParserElement.enablePackrat()
+
 # define SQL tokens
 selectStmt = Forward()
 SELECT, FROM, WHERE, AND, OR, IN, IS, NOT, NULL = map(