44 lines
811 B
Text
44 lines
811 B
Text
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<program> := <method>+
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<method> := method <type_method> <ident>(<param>* ) <block>
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<type> := int | double | string
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<type_method> := <type> | void
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<ident> := <char> <ident_rest>*
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<ident_rest> := <char> | <digit>
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<digit> := 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
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<int> := <digit>+
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<double> := <int>.<int>
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<string> := " <char>? "
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<param> := <type> <ident>
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<block> := <call>;
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| <ident> = <expr>;
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| <type> <ident>;
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| <type> <ident> = <expr>;
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| if <condit> <block>
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| if <condit> <block> else <block>
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| while <condit> <block>
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| do <block> until <condit>;
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<condit> := <int> <cond_op> <int>
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<cond_op> := < | > | == | <= | >=
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<expr> := <int>
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| <double>
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| <string>
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| <int> <arith_op> <int>
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| <double> <arith_op> <double>
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| <ident>
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| <call>
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<arith_op> := + | - | * | /
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