Building Recursive Descent Parsers with PythonMcguire, Paul
However, recursive descent parsing is a rather slow method compared to LL(k) or LR(k) algorithms. Still, parsing with funcparserlib is at least twice faster than PyParsing, a very popular library for Python.The source code of funcparserlib is only 1.2K lines of code, with lots of ...
TinyExpr is a very small recursive descent parser and evaluation engine for math expressions. It's handy when you want to add the ability to evaluation math expressions at runtime without adding a bunch of cruft to you project. In addition to the standard math operators and precedence, TinyExpr...
The Input parser parses input CSV files and stores the data in chunks using row-major format to allow batched processing of mini-batch gradient descent. In SQL, this corresponds to a simple table scan. In Umbra, we can also use a foreign table as input for continuous views (table taxida...
TinyExpr is a very small recursive descent parser and evaluation engine for math expressions. It's handy when you want to add the ability to evaluate math expressions at runtime without adding a bunch of cruft to your project. In addition to the standard math operators and precedence, TinyExpr...
SP (Simple Parser) is a Python[1]parser generator. It is aimed at easy usage rather than performance. SP producesTop-DownRecursive descentparsers. SP also usesmemoizationto optimize parsers' speed when dealing with ambiguous grammars. License ...
TinyExpr is a very small recursive descent parser and evaluation engine for math expressions. It's handy when you want to add the ability to evaluation math expressions at runtime without adding a bunch of cruft to you project. In addition to the standard math operators and precedence, TinyExpr...
te_compile() uses a simple recursive descent parser to compile your expression into a syntax tree. For example, the expression "sin x + 1/4" parses as:te_compile() also automatically prunes constant branches. In this example, the compiled expression returned by te_compile() would become:...
TinyExpr is a very small recursive descent parser and evaluation engine for math expressions. It's handy when you want to add the ability to evaluation math expressions at runtime without adding a bunch of cruft to you project. In addition to the standard math operators and precedence, TinyExpr...
TinyExpr is a very small recursive descent parser and evaluation engine for math expressions. It's handy when you want to add the ability to evaluation math expressions at runtime without adding a bunch of cruft to you project. In addition to the standard math operators and precedence, TinyExpr...