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Compilers and Compiler Generators Introduction with C++

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The book starts with a fairly simple overview of the translation process, of the constituent parts of a
compiler, and of the concepts of porting and bootstrapping compilers. This is followed by a chapter
on machine architecture and machine emulation, as later case studies make extensive use of code
generation for emulated machines, a very common strategy in introductory courses. The next
chapter introduces the student to the notions of regular expressions, grammars, BNF and EBNF,
and the value of being able to specify languages concisely and accurately.
Two chapters follow that discuss simple features of assembler language, accompanied by the
development of an assembler/interpreter system which allows not only for very simple assembly,
but also for conditional assembly, macro-assembly, error detection, and so on. Complete code for
such an assembler is presented in a highly modularized form, but with deliberate scope left for
extensions, ranging from the trivial to the extensive.
Three chapters follow on formal syntax theory, parsing, and the manual construction of scanners
and parsers. The usual classifications of grammars and restrictions on practical grammars are
discussed in some detail. The material on parsing is kept to a fairly simple level, but with a
thorough discussion of the necessary conditions for LL(1) parsing. The parsing method treated in
most detail is the method of recursive descent, as is found in many Pascal compilers; LR parsing is
only briefly discussed.

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