Compiler Construction. Syntax Analysis Top-down parsing. Syntax Analysis, continued. Syntax analysis. Last week we covered The goal of syntax analysis Context-free grammars Top-down parsing (a simple but weak parsing method) Today, we will Wrap up top-down parsing, including LL(1)
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Corresponding transition diagrams:
Initial stack is $E
Initial input is id + id * id $
1 symbol of lookahead
Left-to-right scan of the input
This is the same as saying the
predictive parser always
knows what to do!
In reverse, the
out a rightmost