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support negative numbers

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This commit is contained in:
Jan Tvrdik 2017-11-17 10:12:33 +01:00
parent 523d45b7ef
commit d973733eee
2 changed files with 7 additions and 7 deletions
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10
doc/grammars/const-expr.peg
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@ -9,15 +9,15 @@ ConstantExpr
/ ConstantFetch
ConstantFloat
= [0-9]+ '.' [0-9]* ConstantFloatExp?
/ [0-9]* '.' [0-9]+ ConstantFloatExp?
/ [0-9]+ ConstantFloatExp
= '-'? [0-9]+ '.' [0-9]* ConstantFloatExp?
/ '-'? [0-9]* '.' [0-9]+ ConstantFloatExp?
/ '-'? [0-9]+ ConstantFloatExp
ConstantFloatExp
= [eE] [0-9]+
= [eE] '-'? [0-9]+
ConstantInt
= [0-9]+
= '-'? [0-9]+
ConstantTrue
= [tT][rR][uU][eE]

4
src/Lexer/Lexer.php
View File

@ -131,8 +131,8 @@ class Lexer
self::TOKEN_CLOSE_PHPDOC => '\\*/',
self::TOKEN_PHPDOC_TAG => '@[a-z-]++',
self::TOKEN_FLOAT => '(?:[0-9]++\\.[0-9]*+(?:e[0-9]++)?)|(?:[0-9]*+\\.[0-9]++(?:e[0-9]++)?)|(?:[0-9]++e[0-9]++)',
self::TOKEN_INTEGER => '[0-9]++',
self::TOKEN_FLOAT => '(?:-?[0-9]++\\.[0-9]*+(?:e-?[0-9]++)?)|(?:-?[0-9]*+\\.[0-9]++(?:e-?[0-9]++)?)|(?:-?[0-9]++e-?[0-9]++)',
self::TOKEN_INTEGER => '-?[0-9]++',
self::TOKEN_SINGLE_QUOTED_STRING => '\'(?:\\\\.|[^\'])*+\'',
self::TOKEN_DOUBLE_QUOTED_STRING => '"(?:\\\\.|[^"])*+"',