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4.7 More Powerful LR ParsersIn this section, we shall extend the previous LR parsing techniques to use one symbol of lookahead on the input. There are... 阅读全文
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4.6.5 Viable PrefixesWhy can LR(0) automata be used to make shift-reduce decisions? The LR(0) automaton for a grammar characterizes the strings of gra... 阅读全文
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4.6.4 Constructing SLR-Parsing TablesThe SLR method for constructing parsing tables is a good starting point for studying LR parsing. We shall refer t... 阅读全文
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4.6.3 The LR-Parsing AlgorithmA schematic of an LR parser is shown in Fig. 4.35. It consists of an input, an output, a stack, a driver program, and a ... 阅读全文
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4.6 Introduction to LR Parsing: Simple LRThe most prevalent type of bottom-up parser today is based on a concept called LR(k) parsing; the "L" is for ... 阅读全文
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4.5 Bottom-Up ParsingA bottom-up parse corresponds to the construction of a parse tree for an input string beginning at the leaves (the bottom) and wo... 阅读全文