Package org.daiitech.naftah.parser

Class SyntaxHighlighter

java.lang.Object

org.daiitech.naftah.utils.repl.BaseHighlighter

org.daiitech.naftah.parser.SyntaxHighlighter

All Implemented Interfaces:

org.jline.reader.Highlighter

public class SyntaxHighlighter
extends BaseHighlighter

A syntax highlighter class specifically tailored for highlighting Naftah language source code in a terminal environment.

It tokenizes the input buffer using a lexer and applies color styling to various language constructs based on token types.

Right-to-left (RTL) shaping and terminal wrapping support are also handled.

Author:

Chakib Daii

Field Summary

Fields inherited from class org.daiitech.naftah.utils.repl.BaseHighlighter

originalHighlighter

Constructor Summary

Constructors

Constructor	Description
SyntaxHighlighter(org.jline.reader.Highlighter originalHighlighter)	Constructs a SyntaxHighlighter that wraps another highlighter.

Method Summary

Modifier and Type	Method	Description
private org.jline.utils.AttributedStyle	getStyleForTokenType(int tokenType)	Maps token types to specific styles (e.g., colors, bold, italic).
org.jline.utils.AttributedString	highlight(org.jline.reader.LineReader reader, String buffer)	Highlights the input line with token-based styles and formatting.

Methods inherited from class org.daiitech.naftah.utils.repl.BaseHighlighter

merge, setErrorIndex, setErrorPattern

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jline.reader.Highlighter

refresh

Constructor Details

SyntaxHighlighter

public SyntaxHighlighter(org.jline.reader.Highlighter originalHighlighter)

Constructs a SyntaxHighlighter that wraps another highlighter.

Parameters:

originalHighlighter - the base highlighter to delegate to

Method Details

highlight

public org.jline.utils.AttributedString highlight(org.jline.reader.LineReader reader,
 String buffer)

Highlights the input line with token-based styles and formatting. It performs RTL shaping and wraps lines based on terminal width.

Specified by:

highlight in interface org.jline.reader.Highlighter

Overrides:

highlight in class BaseHighlighter

Parameters:

reader - the line reader

buffer - the input string buffer

Returns:

an AttributedString containing styled output

Throws:

org.jline.reader.EOFError - if the buffer contains escape sequences indicating multiline

getStyleForTokenType

private org.jline.utils.AttributedStyle getStyleForTokenType(int tokenType)

Maps token types to specific styles (e.g., colors, bold, italic).

Parameters:

tokenType - the integer type of the token from the lexer

Returns:

the corresponding AttributedStyle for the token