1.2.2 Applications Generation

Question 1

Lexical Analysis

Answer 1

1. Comments and white space removed
2. Remaining code turned into a series of tokens
3. Symbol table is created to keep track of variables and subroutines

Question 2

What does a translator do?

Answer 2

Converts source code into machine code

Question 3

What is a Assembler?

Answer 3

A translator that converts assembly code into machine code

Question 4

What is a Interpreter?

Answer 4

A translator that converts high level source code into machine code line by line

-Good during coding and debugging

Question 5

What is a Complier?

Answer 5

• A translator that converts high level source code into machine code all in one go
• Can take a long time
• The final file can be run without source code or a translator

Question 6

Syntax analysis

Answer 6

1. Will produce an abstract syntax tree that will represent the program
2. Check that the code that has been written uses a valid syntax

Question 7

Code Generation and Optimisation

Answer 7

1.Code generation is when the compiler converts the output of syntax analysis into object code

2. Compilers can be tweaked to optimise either speed or memory
   - As it is often difficult to optimise both at the same time