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* examples/c++/README.md, examples/c++/calc++/README.md, * examples/c/calc/README.md, examples/c/lexcalc/README.md, * examples/c/pushcalc/README.md, examples/c/reccalc/README.md: Prefer the GFDL banner to the GPL one.
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pushcalc - push parser with Bison
This directory contains pushcalc, the traditional calculator, implemented as a push parser.
Traditionally Bison is used to create so called "pull parsers": the user invokes the parser once, which repeatedly calls (pulls) the scanner until the input is drained.
This example demonstrates the "push parsers": the user calls scanner to fetch the next token, passes (pushes) it to the parser, and repeats the operation until the input is drained.
This example is a straightforward conversion of the 'calc' example to the push-parser model.