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  1. Introduction to Compilers and Language Design Second Edition Prof. Douglas Thain University of Notre Dame

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  2. 1. a programming language construct that captures a programming design pattern the linguistic abstraction saved a lot of programming effort he introduced a linguistic abstraction for page navigation in web programming 2. the process of introducing linguistic abstractions

  3. Compiler Assembler Linker/Loader Source Program Modified Source Program Target Assembly Program Relocatable Machine Code Library files Target Machine Code Relocatable object files A source code typically have many modules written in different files. Collect source program from different files, expand macros, etc. Assembly code is easier to ...

  4. You have used several compilers What qualities are important in a compiler? 1. Correct code 2. Output runs fast 3. Compiler runs fast 4. Compile time proportional to program size 5. Support for separate compilation 6. Good diagnostics for syntax errors 7. Works well with the debugger 8. Good diagnostics for flow anomalies 9. Cross language ...

  5. CONTENTS ix 7.8 Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 7.9 Further Reading . . . . . . . . . . . . . . . . . . . . . . . . . . 116

  6. occurs in the program. Unfortunately modern programming languages often have context-sensitive features that make parsing more complicated. An example is a here document, which is terminated by a special string specified at the beginning. (It is context-sensitive because the terminator depends on a string specified earlier in the program.)

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  8. Compiler Source Target Program Program The front end focuses on understanding the source-language program. The back end focuses on mapping programs to the target machine. This sep-aration of concerns has several important implications for the design and implementation of compilers. The front end must encode its knowledge of the source program ...