go-pkg/expr
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Added new special operators like &= and <<=.

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Also made a litle change to scanner function moveOn(): now it moves on
the last char passed and only if there are more than one chars.
This commit is contained in:
Celestino Amoroso
2024-12-29 19:26:02 +01:00
parent e43823740f
commit eccb0c4dc9
11 changed files with 346 additions and 278 deletions
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symbol.go
+70 -66
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@@ -7,72 +7,76 @@ package expr
type Symbol int16
const (
SymUnknown Symbol = iota - 1 // -1: Unknown symbol
SymNone // 0: Null value for variable of type symbol
SymError // 1: Error reading from stream
SymEos // 2: End of stream
SymMinus // 3: '-'
SymMinusEqual // 4: '-='
SymDoubleMinus // 5: '--'
SymPlus // 6: '+'
SymPlusEqual // 7: '+='
SymDoublePlus // 8: '++'
SymStar // 9: '*'
SymDoubleStar // 10: '**'
SymSlash // 11: '/'
SymBackSlash // 12: '\'
SymVertBar // 13: '|'
SymDoubleVertBar // 14: '||'
SymComma // 15: ','
SymColon // 16: ':'
SymSemiColon // 17: ';'
SymDot // 18: '.'
SymDotSlash // 19: './'
SymQuote // 20: '\''
SymDoubleQuote // 21: '"'
SymBackTick // 22: '`'
SymExclamation // 23: '!'
SymQuestion // 24: '?'
SymAmpersand // 25: '&'
SymDoubleAmpersand // 26: '&&'
SymPercent // 27: '%'
SymAt // 28: '@'
SymUndescore // 29: '_'
SymEqual // 30: '='
SymDoubleEqual // 31: '=='
SymLess // 32: '<'
SymLessOrEqual // 33: '<='
SymGreater // 34: '>'
SymGreaterOrEqual // 35: '>='
SymLessGreater // 36: '<>'
SymNotEqual // 37: '!='
SymDollar // 38: '$'
SymHash // 39: '#'
SymOpenRound // 40: '('
SymClosedRound // 41: ')'
SymOpenSquare // 42: '['
SymClosedSquare // 43: ']'
SymOpenBrace // 44: '{'
SymClosedBrace // 45: '}'
SymTilde // 46: '~'
SymDoubleQuestion // 47: '??'
SymQuestionEqual // 48: '?='
SymQuestionExclam // 49: '?!'
SymDoubleAt // 50: '@@'
SymDoubleColon // 51: '::'
SymDoubleGreater // 52: '>>'
SymDoubleLess // 53: '<<'
SymCaret // 54: '^'
SymDollarRound // 55: '$('
SymOpenClosedRound // 56: '()'
SymDoubleDollar // 57: '$$'
SymDoubleDot // 58: '..'
SymTripleDot // 59: '...'
SymStarEqual // 60: '*='
SymSlashEqual // 61: '/='
SymPercEqual // 62: '%='
SymPlusGreater // 63: '+>'
SymLessPlus // 64: '<+'
SymUnknown Symbol = iota - 1 // -1: Unknown symbol
SymNone // 0: Null value for variable of type symbol
SymError // 1: Error reading from stream
SymEos // 2: End of stream
SymMinus // 3: '-'
SymMinusEqual // 4: '-='
SymDoubleMinus // 5: '--'
SymPlus // 6: '+'
SymPlusEqual // 7: '+='
SymDoublePlus // 8: '++'
SymStar // 9: '*'
SymDoubleStar // 10: '**'
SymSlash // 11: '/'
SymBackSlash // 12: '\'
SymVertBar // 13: '|'
SymDoubleVertBar // 14: '||'
SymComma // 15: ','
SymColon // 16: ':'
SymSemiColon // 17: ';'
SymDot // 18: '.'
SymDotSlash // 19: './'
SymQuote // 20: '\''
SymDoubleQuote // 21: '"'
SymBackTick // 22: '`'
SymExclamation // 23: '!'
SymQuestion // 24: '?'
SymAmpersand // 25: '&'
SymDoubleAmpersand // 26: '&&'
SymPercent // 27: '%'
SymAt // 28: '@'
SymUndescore // 29: '_'
SymEqual // 30: '='
SymDoubleEqual // 31: '=='
SymLess // 32: '<'
SymLessOrEqual // 33: '<='
SymGreater // 34: '>'
SymGreaterOrEqual // 35: '>='
SymLessGreater // 36: '<>'
SymNotEqual // 37: '!='
SymDollar // 38: '$'
SymHash // 39: '#'
SymOpenRound // 40: '('
SymClosedRound // 41: ')'
SymOpenSquare // 42: '['
SymClosedSquare // 43: ']'
SymOpenBrace // 44: '{'
SymClosedBrace // 45: '}'
SymTilde // 46: '~'
SymDoubleQuestion // 47: '??'
SymQuestionEqual // 48: '?='
SymQuestionExclam // 49: '?!'
SymDoubleAt // 50: '@@'
SymDoubleColon // 51: '::'
SymDoubleGreater // 52: '>>'
SymDoubleLess // 53: '<<'
SymCaret // 54: '^'
SymDollarRound // 55: '$('
SymOpenClosedRound // 56: '()'
SymDoubleDollar // 57: '$$'
SymDoubleDot // 58: '..'
SymTripleDot // 59: '...'
SymStarEqual // 60: '*='
SymSlashEqual // 61: '/='
SymPercEqual // 62: '%='
SymDoubleLessEqual // 63: '<<='
SymDoubleGreaterEqual // 64: '>>='
SymAmpersandEqual // 65: '&='
SymVertBarEqual // 65: '|='
SymPlusGreater // 66: '+>'
SymLessPlus // 67: '<+'
SymChangeSign
SymUnchangeSign
SymIdentifier