A Lexical Analyzer developed for Problem Based Learning of Programming Language Processors discipline.
- Clone the main branch
- Create input ("/input") and output ("/output") folders on root
- Create a input file (Ex.: "input1.txt") on input folder and write your code
- Run python3 main.py to analyze your code
- Check the output folder
| Description | Composition |
|---|---|
| Reserved words | var const typeDef struct extends procedure function start return if else then while read print int real boolean string true false global local |
| Identifiers (ID) | letter(letter | digit | _ )* |
| Numbers | Digit+( . Digit+)? |
| Digits | [0-9] |
| Letters | [a-z] | [A-Z] |
| Arithmetic operators | + - * / ++ -- |
| Relational operators | == != > >= < <= = |
| Logical operators | && || ! |
| Comments delimeters | // This is a line comment /* This is a block comment */ |
| Delimiters | ; , () [] {} . |
| String | "(letter | digit | symbol | \")* " |
| Symbol | ASCII 32 to 126 (except ASCII 34) |
| Type | Token |
|---|---|
| Reserved word | PRE |
| Identifier | IDE |
| Number | NRO |
| Delimiter | DEL |
| Relational operator | REL |
| Logical operator | LOG |
| Arithmetic operator | ART |
| String | CAD |
| Invalid symbol | SIB |
| Malformed string | CMF |
| Malformed number | NMF |
| Malformed comment | CoMF |
| Malformed operator | OpMF |