Titlebook: Compiler Construction; An Advanced Course F. L. Bauer,F. L. Remer,W. M. Waite,F. L. Bauer,J. Book 19741st edition Springer-Verlag Berlin He

pericardium

代替

antedate

商業(yè)上

N. E. Naftchi,A. T. Viau,E. W. Lowmaned by starting with a string consisting of one particular “start symbol” and successively rewriting the string according to a finite set of rewriting rules or “productions”. Grammars of interest here impose a structure, called a “derivation tree”, on the string generated. Formally, grammars are defined as follows.

玉米