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<!DOCTYPE html>
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>highlight.g4</title>
<meta name="generator" content="KF5::SyntaxHighlighting - Definition (ANTLR) - Theme (Breeze Light)"/>
</head><body style="background-color:#ffffff;color:#1f1c1b"><pre>
<span style="color:#898887">/* This test file tests Kate's ANTLR highlighting </span>
<span style="color:#898887"> compilable bt ANTLR although not directly:</span>
<span style="color:#898887"> grammar can be alone file for both parser and lexer</span>
<span style="color:#898887"> or two files</span>
<span style="color:#898887"> This file is merged TestParser.g4 and TestLexer.g4</span>
<span style="color:#898887"> this lines also tests regions of multiline comment</span>
<span style="color:#898887">*/</span>
<span style="color:#898887">//file TestParser.g4</span>
<span style="font-weight:bold">parser</span> <span style="font-weight:bold">grammar</span> TestParser<span style="color:#ca60ca">;</span>
<span style="color:#0057ae">options</span> <span style="color:#ca60ca">{</span> tokenVocab <span style="color:#ca60ca">=</span> TestLexer<span style="color:#ca60ca">;</span> <span style="color:#ca60ca">}</span>
<span style="color:#898887">// The main entry point for parsing a grammar.</span>
startRule
<span style="color:#ca60ca">:</span> <span style="color:#ca60ca">(</span>expression <span style="color:#ca60ca">|</span> STRING<span style="color:#ca60ca">)+</span> EOF
<span style="color:#ca60ca">;</span>
expression
<span style="color:#ca60ca">:</span> expression PLUS mulExpr
<span style="color:#ca60ca">|</span> expression MINUS mulExpr
<span style="color:#ca60ca">|</span> mulExpr
<span style="color:#ca60ca">;</span>
mulExpr
<span style="color:#ca60ca">:</span> mulExpr MUL unaryExpr
<span style="color:#ca60ca">|</span> mulExpr DIV unaryExpr
<span style="color:#ca60ca">|</span> unaryExpr
<span style="color:#ca60ca">;</span>
unaryExpr
<span style="color:#ca60ca">:</span> atom
<span style="color:#ca60ca">|</span> LPAR expression RPAR
<span style="color:#ca60ca">;</span>
atom
<span style="color:#ca60ca">:</span> IDENT
<span style="color:#ca60ca">|</span> number
<span style="color:#ca60ca">;</span>
number
<span style="color:#ca60ca">:</span> INT
<span style="color:#ca60ca">|</span> FLOAT
<span style="color:#ca60ca">;</span>
<span style="color:#898887">//================================</span>
<span style="color:#898887">//file TestLexer.g4</span>
<span style="font-weight:bold">lexer</span> <span style="font-weight:bold">grammar</span> TestLexer<span style="color:#ca60ca">;</span>
<span style="color:#898887">/*'channels' and '{' must be in one line</span>
<span style="color:#898887"> to correct highlighting, highlighter can't</span>
<span style="color:#898887"> recognize regular expression "(options|tokens|channels)(?=([\s]*{))"</span>
<span style="color:#898887"> where apart from \s whitrspaces are end of lines</span>
<span style="color:#898887"> */</span>
<span style="color:#0057ae">channels</span> <span style="color:#ca60ca">{</span> OFF_CHANNEL <span style="color:#ca60ca">,</span> COMMENT <span style="color:#ca60ca">}</span>
PLUS
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'+'</span>
<span style="color:#ca60ca">;</span>
MINUS
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'-'</span>
<span style="color:#ca60ca">;</span>
MUL
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'*'</span>
<span style="color:#ca60ca">;</span>
DIV
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'/'</span>
<span style="color:#ca60ca">;</span>
LPAR
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'('</span>
<span style="color:#ca60ca">;</span>
RPAR
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">')'</span>
<span style="color:#ca60ca">;</span>
IDENT
<span style="color:#ca60ca">:</span> Nondigit
<span style="color:#ca60ca">(</span> Nondigit
<span style="color:#ca60ca">|</span> Digit
<span style="color:#ca60ca">)*</span>
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
Digit
<span style="color:#ca60ca">:</span> <span style="color:#924c9d">[0-9]</span>
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
NonzeroDigit
<span style="color:#ca60ca">:</span> <span style="color:#924c9d">[1-9]</span>
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
Nondigit
<span style="color:#ca60ca">:</span> <span style="color:#924c9d">[a-zA-Z_]</span>
<span style="color:#ca60ca">;</span>
Sign
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'+'</span> <span style="color:#ca60ca">|</span> <span style="color:#bf0303">'-'</span>
<span style="color:#ca60ca">;</span>
INT
<span style="color:#ca60ca">:</span> Sign<span style="color:#ca60ca">?</span> <span style="color:#ca60ca">(</span>NonzeroDigit Digit<span style="color:#ca60ca">*</span> <span style="color:#ca60ca">|</span> <span style="color:#bf0303">'0'</span><span style="color:#ca60ca">)</span>
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
DigitSequence
<span style="color:#ca60ca">:</span> Digit<span style="color:#ca60ca">+</span>
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
ExponentPart
<span style="color:#ca60ca">:</span> <span style="color:#924c9d">[eE]</span> Sign<span style="color:#ca60ca">?</span> DigitSequence
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
FractionalConstant
<span style="color:#ca60ca">:</span> DigitSequence<span style="color:#ca60ca">?</span> <span style="color:#bf0303">'.'</span> DigitSequence
<span style="color:#ca60ca">|</span> DigitSequence <span style="color:#bf0303">'.'</span>
<span style="color:#ca60ca">;</span>
FLOAT
<span style="color:#ca60ca">:</span> <span style="color:#ca60ca">(</span>FractionalConstant ExponentPart<span style="color:#ca60ca">?</span> <span style="color:#ca60ca">|</span> DigitSequence ExponentPart<span style="color:#ca60ca">)</span>
<span style="color:#ca60ca">;</span>
<span style="font-weight:bold">fragment</span>
EscapeSequence
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'\\'</span> <span style="color:#924c9d">['"?abfnrtvhe\\]</span>
<span style="color:#ca60ca">;</span>
<span style="color:#898887">//between [] is charset , test escape \</span>
<span style="color:#898887">fragment</span>
SChar
<span style="color:#ca60ca">:</span> <span style="color:#ca60ca">~</span><span style="color:#924c9d">["\\\r\n]</span>
<span style="color:#ca60ca">|</span> EscapeSequence
<span style="color:#ca60ca">;</span>
STRING
<span style="color:#ca60ca">:</span> <span style="color:#bf0303">'"'</span> SChar<span style="color:#ca60ca">*</span> <span style="color:#bf0303">'"'</span>
<span style="color:#ca60ca">;</span>
</pre></body></html>
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