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copenhas/basic math grammar

Created December 31, 2010 02:10
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basic math grammar
Nonterminals expression.
Terminals number '+' '-' '/' '*' '(' ')'.
Rootsymbol expression.
Endsymbol '$end'.
Left 300 '+'.
Left 300 '-'.
Left 400 '*'.
Left 400 '/'.
expression -> expression '+' expression : [ '$2', '$1', '$3' ].
expression -> expression '-' expression : [ '$2', '$1', '$3' ].
expression -> expression '/' expression : [ '$2', '$1', '$3' ].
expression -> expression '*' expression : [ '$2', '$1', '$3' ].
expression -> '(' expression ')' : '$2'.
expression -> number : '$1'.
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