A lexical analyzer for Java source code written in Python
from jlex.lexer import lex_source_file
from jlex.type import Type
tokens = lex_source_file('Example.java')
for token in tokens:
if token.type not in [Type.SPACE, Type.NEW_LINE]:
print(token)public class Example {
public static void main(String[] args) {
System.out.println("Hello world!");
}
}| Type | Value |
|---|---|
| PUBLIC | public |
| CLASS | class |
| IDENTIFIER | Example |
| OPEN_CURLY_BRACE | { |
| PUBLIC | public |
| STATIC | static |
| VOID | void |
| IDENTIFIER | main |
| OPEN_PAREN | ( |
| STRING | String |
| OPEN_BRACE | [ |
| CLOSE_BRACE | ] |
| IDENTIFIER | args |
| CLOSE_PAREN | ) |
| OPEN_CURLY_BRACE | { |
| IDENTIFIER | System |
| POINT | . |
| IDENTIFIER | out |
| POINT | . |
| IDENTIFIER | println |
| OPEN_PAREN | ( |
| STRING_LITERAL | "Hello world!" |
| CLOSE_PAREN | ) |
| SEMICOLON | ; |
| CLOSE_CURLY_BRACE | } |
| CLOSE_CURLY_BRACE | } |
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