Compiler Construction, a modern text written by two leaders in the in the field, demonstrates how a compiler is built. Describing the necessary tools and how to create and use them, the authors compose the task into modules, placing equal emphasis on the action and data aspects of compilation. Attribute grammars are used extensively to provide a uniform treatment of semantic analysis, competent code generation and assembly. The authors also explain how intermediate representations can be chosen automatically on the basis of attribute dependence. Thus, all aspects of the subject are presented in terms of a uniform model subject to automation. This approach imparts a vivid understanding of the compilation and the decisions that must be made when designing a compiler.