84 lines
2.7 KiB
Text
84 lines
2.7 KiB
Text
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/*
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* Copyright 2023-2024 FalsePattern
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.falsepattern.zigbrains.zon.lexer;
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import com.intellij.lexer.FlexLexer;
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import com.intellij.psi.tree.IElementType;
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import static com.intellij.psi.TokenType.WHITE_SPACE;
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import static com.intellij.psi.TokenType.BAD_CHARACTER;
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import static com.falsepattern.zigbrains.zon.psi.ZonTypes.*;
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%%
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%class ZonFlexLexer
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%implements FlexLexer
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%function advance
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%type IElementType
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%unicode
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CRLF=\R
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WHITE_SPACE=[\s]+
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LINE_COMMENT="//" [^\n]* | "////" [^\n]*
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COMMENT="///".*
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ID=[A-Za-z_][A-Za-z0-9_]*
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hex=[0-9a-fA-F]
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char_escape
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= "\\x" {hex} {hex}
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| "\\u{" {hex}+ "}"
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| "\\" [nr\\t'\"]
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string_char
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= {char_escape}
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| [^\\\"\n]
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LINE_STRING=("\\\\" [^\n]* [ \n]*)+
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%state STRING_LITERAL
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%state ID_STRING
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%state UNCLOSED_STRING
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%%
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<YYINITIAL> {WHITE_SPACE} { return WHITE_SPACE; }
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<YYINITIAL> "." { return DOT; }
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<YYINITIAL> "IntellijIdeaRulezzz" { return INTELLIJ_COMPLETION_DUMMY; }
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<YYINITIAL> "{" { return LBRACE; }
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<YYINITIAL> "}" { return RBRACE; }
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<YYINITIAL> "=" { return EQ; }
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<YYINITIAL> "," { return COMMA; }
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<YYINITIAL> "true" { return BOOL_TRUE; }
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<YYINITIAL> "false" { return BOOL_FALSE; }
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<YYINITIAL> {COMMENT} { return COMMENT; }
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<YYINITIAL> {LINE_COMMENT} { return COMMENT; }
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<YYINITIAL> {ID} { return ID; }
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<YYINITIAL> "@\"" { yybegin(ID_STRING); }
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<ID_STRING> {string_char}*"\"" { yybegin(YYINITIAL); return ID; }
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<ID_STRING> [^] { yypushback(1); yybegin(UNCLOSED_STRING); }
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<YYINITIAL> "\"" { yybegin(STRING_LITERAL); }
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<STRING_LITERAL> {string_char}*"\"" { yybegin(YYINITIAL); return STRING_LITERAL_SINGLE; }
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<STRING_LITERAL> [^] { yypushback(1); yybegin(UNCLOSED_STRING); }
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<UNCLOSED_STRING>[^\n]*{CRLF} { yybegin(YYINITIAL); return BAD_STRING; }
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<YYINITIAL> {LINE_STRING} { return LINE_STRING; }
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[^] { return BAD_CHARACTER; }
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