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| 1 | +package com.cedricziel.idea.fluid.lang.lexer; |
| 2 | + |
| 3 | +import com.intellij.lexer.FlexLexer; |
| 4 | + |
| 5 | +import com.intellij.psi.TokenType; |
| 6 | +import com.intellij.psi.tree.IElementType; |
| 7 | + |
| 8 | +import com.cedricziel.idea.fluid.lang.psi.FluidTypes; |
| 9 | + |
| 10 | +%% |
| 11 | + |
| 12 | +%{ |
| 13 | + public _FluidLexer() { |
| 14 | + this((java.io.Reader) null); |
| 15 | + } |
| 16 | +%} |
| 17 | + |
| 18 | +%class _FluidLexer |
| 19 | +%implements FlexLexer |
| 20 | +%function advance |
| 21 | +%type IElementType |
| 22 | +%unicode |
| 23 | + |
| 24 | +WS = \s |
| 25 | + |
| 26 | +INTEGER_NUMBER = 0|[1-9]\d* |
| 27 | +FLOAT_NUMBER = [0-9]*\.[0-9]+([eE][-+]?[0-9]+)?|[0-9]+[eE][-+]?[0-9]+ |
| 28 | +IDENTIFIER = [\p{Alpha}_][\p{Alnum}_:]* |
| 29 | + |
| 30 | +%state EXPRESSION |
| 31 | +%state SINGLE_QUOTED_STRING |
| 32 | +%state DOUBLE_QUOTED_STRING |
| 33 | +%state TERNARY_BRANCHES_OP |
| 34 | +%state COMMENT |
| 35 | + |
| 36 | +%% |
| 37 | + |
| 38 | +<YYINITIAL> { |
| 39 | + "{" { yybegin(EXPRESSION); return FluidTypes.EXPR_START; } |
| 40 | + "<!--/*" { yybegin(COMMENT); return FluidTypes.COMMENT_START; } |
| 41 | + "}" { yybegin(YYINITIAL); return FluidTypes.EXPR_END; } |
| 42 | + |
| 43 | + "true" { return FluidTypes.BOOLEAN_LITERAL; } |
| 44 | + "false" { return FluidTypes.BOOLEAN_LITERAL; } |
| 45 | + "TRUE" { return FluidTypes.BOOLEAN_LITERAL; } |
| 46 | + "FALSE" { return FluidTypes.BOOLEAN_LITERAL; } |
| 47 | + |
| 48 | + "'" { yybegin(SINGLE_QUOTED_STRING); return FluidTypes.SINGLE_QUOTE; } |
| 49 | + \" { yybegin(DOUBLE_QUOTED_STRING); return FluidTypes.DOUBLE_QUOTE; } |
| 50 | + {INTEGER_NUMBER} { return FluidTypes.INTEGER_NUMBER; } |
| 51 | + {FLOAT_NUMBER} { return FluidTypes.FLOAT_NUMBER; } |
| 52 | + {IDENTIFIER} { return FluidTypes.IDENTIFIER; } |
| 53 | + |
| 54 | + "(" { return FluidTypes.LEFT_PARENTH; } |
| 55 | + ")" { return FluidTypes.RIGHT_PARENTH; } |
| 56 | + "." { return FluidTypes.DOT; } |
| 57 | + "," { return FluidTypes.COMMA; } |
| 58 | + "!" { return FluidTypes.NOT; } |
| 59 | + "&&" { return FluidTypes.AND; } |
| 60 | + "||" { return FluidTypes.OR; } |
| 61 | + |
| 62 | + "=" { return FluidTypes.ASSIGN; } |
| 63 | + "==" { return FluidTypes.EQ; } |
| 64 | + "!=" { return FluidTypes.NEQ; } |
| 65 | + "<" { return FluidTypes.LT; } |
| 66 | + ">" { return FluidTypes.GT; } |
| 67 | + "<=" { return FluidTypes.LEQ; } |
| 68 | + ">=" { return FluidTypes.GEQ; } |
| 69 | + "?" { return FluidTypes.TERNARY_QUESTION_OP; } |
| 70 | + |
| 71 | + {WS}+ { return TokenType.WHITE_SPACE; } |
| 72 | + |
| 73 | + [^] { yybegin(YYINITIAL); return TokenType.BAD_CHARACTER; } |
| 74 | +} |
| 75 | + |
| 76 | +<COMMENT> { |
| 77 | + "*/-->" { yybegin(YYINITIAL); return FluidTypes.COMMENT_END; } |
| 78 | + [^] { return FluidTypes.COMMENT_CONTENT; } |
| 79 | +} |
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