diff options
Diffstat (limited to 'src/pyparsing.py')
| -rw-r--r-- | src/pyparsing.py | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/pyparsing.py b/src/pyparsing.py index f6a7cab..18f788a 100644 --- a/src/pyparsing.py +++ b/src/pyparsing.py @@ -3860,7 +3860,7 @@ commaSeparatedList = delimitedList( Optional( quotedString.copy() | _commasepite # some other useful expressions - using lower-case class name since we are really using this as a namespace
class pyparsing_common:
"""
- Here are some common low-level expressions that may be useful in jump-starting your parser development:
+ Here are some common low-level expressions that may be useful in jump-starting parser development:
- numeric forms (integers, reals, scientific notation)
- parse actions for converting numeric strings to Python int and/or float types
- common programming identifiers
@@ -3879,18 +3879,26 @@ class pyparsing_common: return float(t[0])
integer = Word(nums).setName("integer").setParseAction(convertToInteger)
+ """expression that parses an unsigned integer and returns an int"""
+
signedInteger = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
+ """expression that parses an integer with optional leading sign and returns an int"""
+
real = Regex(r'[+-]?\d+\.\d*').setName("real number").setParseAction(convertToFloat)
+ """expression that parses a floating point number and returns a float"""
+
sciReal = Regex(r'[+-]?\d+([eE][+-]?\d+|\.\d*([eE][+-]?\d+)?)').setName("real number with scientfic notation").setParseAction(convertToFloat)
+ """expression that parses a floating point number with optional scientfic notation and returns a float"""
# streamlining this expression makes the docs nicer-looking
numeric = (sciReal | real | signedInteger).streamline()
+ """any numeric expression, returns the corresponding Python type"""
- # any int or real number, returned as float
number = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("number").setParseAction(convertToFloat)
+ """any int or real number, returned as float"""
- # typical code identifiers
identifier = Word(alphas+'_', alphanums+'_').setName("identifier")
+ """typical code identifier"""
if __name__ == "__main__":
|