98 lines
2.6 KiB
Plaintext
98 lines
2.6 KiB
Plaintext
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%{
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// Copyright 2019 The CC Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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%}
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%yyc c
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%yyn c = s.next()
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%yym s.mark = len(s.charBuf)
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%{
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package cc // import "modernc.org/cc/v3"
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func (s *scanner) scan() (r rune) {
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%}
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c-char [^'\n\x80\\]|{escape-sequence}
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c-char-sequence {c-char}+
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character-constant '{c-char-sequence}'
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comment "/*"([^*\x80]|\*+[^*/\x80])*\*+\/
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comment-not-terminated "/*"([^*\x80]|\*+[^*/\x80])*(\*+)?\n\x80
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digit [0-9]
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escape-sequence {simple-sequence}|{octal-escape-sequence}|{hexadecimal-escape-sequence}|{universal-character-name}
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hex-quad {hexadecimal-digit}{hexadecimal-digit}{hexadecimal-digit}{hexadecimal-digit}
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hexadecimal-digit [0-9a-fA-F]
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hexadecimal-escape-sequence \\x{hexadecimal-digit}+
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identifier {identifier-nondigit}({identifier-nondigit}|{digit}|"$")*
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identifier-nondigit {nondigit}|"$"|{universal-character-name}
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line-comment "//"[^\n\x80]*
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nondigit [_a-zA-Z\x81]
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octal-digit [0-7]
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octal-escape-sequence \\{octal-digit}{octal-digit}?{octal-digit}?
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pp-number ({digit}|\.{digit})({digit}|{identifier-nondigit}|[eEpP]{sign}|\.)*
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s-char [^\x22\n\x80\\]|{escape-sequence}
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s-char-sequence {s-char}+
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sign [-+]
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simple-sequence \\['\x22?\\abefnrtv]
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string-literal \x22{s-char-sequence}?\x22
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universal-character-name \\u{hex-quad}|\\U{hex-quad}{hex-quad}
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white-space [ \t\f\v]
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%%
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c := s.initScan()
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({white-space}|{comment})*{line-comment} |
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({white-space}|{comment})+{line-comment}?
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return ' '
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(({white-space}|{comment})*{comment-not-terminated})+
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return s.unterminatedComment()
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"!=" return NEQ
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"##" return PPPASTE
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"%:" return '#'
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"%:%:" return PPPASTE
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"%=" return MODASSIGN
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"%>" return '}'
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"&&" return ANDAND
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"&=" return ANDASSIGN
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"*=" return MULASSIGN
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"++" return INC
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"+=" return ADDASSIGN
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"--" return DEC
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"-=" return SUBASSIGN
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"->" return ARROW
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"..." return DDD
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"/=" return DIVASSIGN
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":>" return ']'
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"<%" return '{'
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"<:" return '['
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"<<" return LSH
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"<<=" return LSHASSIGN
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"<=" return LEQ
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"==" return EQ
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">=" return GEQ
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">>" return RSH
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">>=" return RSHASSIGN
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"^=" return XORASSIGN
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"|=" return ORASSIGN
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"||" return OROR
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L{string-literal} return LONGSTRINGLITERAL
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L{character-constant} return LONGCHARCONST
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{character-constant} return CHARCONST
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{identifier} return IDENTIFIER
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{pp-number} return PPNUMBER
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{string-literal} return STRINGLITERAL
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\r?\n return '\n'
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%%
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if c, ok := s.abort(); ok {
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return rune(c)
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}
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goto yyAction
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}
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