25 lines
487 B
Plaintext
25 lines
487 B
Plaintext
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<program> := <statements> EOF
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<statements> := <statement>
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| <statement> SEP <statements>
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<statement> := let <id> = <expr>
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| <expr>
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<expr> := if <expr> then <statements> end
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| if <expr> then <statements> else <statements> end
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| while <expr> SEP <statements> end
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| ( <expr> )
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| <binop>
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<binop> := <simple_expr>
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| <simple_expr> <id> <binop>
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<simple_expr> := <id>
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| <number>
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| <string>
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