The Bison parser is actually a C function named yyparse. Here we
describe the interface conventions of yyparse and the other
functions that it needs to use.
Keep in mind that the parser uses many C identifiers starting with `yy' and `YY' for internal purposes. If you use such an identifier (aside from those in this manual) in an action or in additional C code in the grammar file, you are likely to run into trouble.
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