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Description:

PLLParser 0.3.3

PLLParser
Parse a Python-like language
This package includes the following modules:
TreeNode.py
SYNOPSIS
node = TreeNode('menubar')

# --- A node can be used like a dictionary
# It will, by default, have a key 'label' set
# to the string provided

print(node['label'])

# menubar

node['mykey'] = 'myvalue'
print(f"node has {len(node)} keys")

# node has 2 keys

firstChild = TreeNode('firstchild')
node.appendChildNode(firstChild)

secondChild = TreeNode('secondchild')
node.appendChildNode(secondChild)

thirdChild = TreeNode('thirdchild')
node.appendChildNode(secondChild)

print(f"node has {node.numChildren()} children")

# node has 3 children

print(f"node has {node.numSiblings()} siblings")
print(f"firstChild has {firstChild.numSiblings()} siblings")

# node has 0 siblings
# firstChild has 2 siblings

RETokenizer.py
SYNOPSIS
tokzr = RETokenizer()
tokzr.add('INTEGER', r'\d+')
tokzr.add('STRING', r'"([^"]*)"', 1)
tokzr.add('STRING', r"'([^']*)'", 1)

lTokens = list(tokzr.tokens('"mystring"'
' + '
"'other'"))
assert lTokens == [
('STRING', 'mystring'),
('OTHER', '+'),
('STRING', 'other'),
]

PLLParser.py
SYNOPSIS
s = '''
* menubar
file
new
open
edit
undo
* layout
row
EditField
SelectField
'''
(tree, hSubTrees) = parsePLL(s)

assert len(hSubTrees) == 2

parserUtils.py
SYNOPSIS
See the file

Unit Tests
All unit tests appear at the end of the source file itself
They can be run using pytest