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Diffstat (limited to 'src/mem/slicc/parser/lexer.ll')
| -rw-r--r-- | src/mem/slicc/parser/lexer.ll | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/mem/slicc/parser/lexer.ll b/src/mem/slicc/parser/lexer.ll new file mode 100644 index 000000000..7903b0ee7 --- /dev/null +++ b/src/mem/slicc/parser/lexer.ll @@ -0,0 +1,118 @@ +/* + * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +%{ + +#include <assert.h> +#include "ASTs.hh" +#include "parser.h" +#include <string> + +extern "C" int yylex(); +extern "C" void yyerror(); +extern "C" int yywrap() +{ + return 1; +} + +%} +%x CMNT +%x IMBEDED +%% + +[\t ]+ /* Ignore whitespace */ +[\n] { g_line_number++; } +"//".*[\n] { g_line_number++; } /* C++ style comments */ + +"/*" BEGIN CMNT; +<CMNT>. ; +<CMNT>\n { g_line_number++; } +<CMNT>"*/" { BEGIN INITIAL; } + +true { yylval.str_ptr = new string(yytext); return LIT_BOOL; } +false { yylval.str_ptr = new string(yytext); return LIT_BOOL; } +global { return GLOBAL_DECL; } +machine { return MACHINE_DECL; } +in_port { return IN_PORT_DECL; } +out_port { return OUT_PORT_DECL; } +action { return ACTION_DECL; } +transition { return TRANSITION_DECL; } +structure { return STRUCT_DECL; } +external_type { return EXTERN_TYPE_DECL; } +enumeration { return ENUM_DECL; } +peek { return PEEK; } +enqueue { return ENQUEUE; } +copy_head { return COPY_HEAD; } +check_allocate { return CHECK_ALLOCATE; } +check_stop_slots { return CHECK_STOP_SLOTS; } +if { return IF; } +else { return ELSE; } +return { return RETURN; } +THIS { return THIS; } +CHIP { return CHIP; } +void { yylval.str_ptr = new string(yytext); return VOID; } + +== { yylval.str_ptr = new string(yytext); return EQ; } +!= { yylval.str_ptr = new string(yytext); return NE; } +[<] { yylval.str_ptr = new string(yytext); return '<'; } +[>] { yylval.str_ptr = new string(yytext); return '>'; } +[<][<] { yylval.str_ptr = new string(yytext); return LEFTSHIFT; } +[>][>] { yylval.str_ptr = new string(yytext); return RIGHTSHIFT; } +[<][=] { yylval.str_ptr = new string(yytext); return LE; } +[>][=] { yylval.str_ptr = new string(yytext); return GE; } +[!] { yylval.str_ptr = new string(yytext); return NOT; } +[&][&] { yylval.str_ptr = new string(yytext); return AND; } +[|][|] { yylval.str_ptr = new string(yytext); return OR; } +[+] { yylval.str_ptr = new string(yytext); return PLUS; } +[-] { yylval.str_ptr = new string(yytext); return DASH; } +[*] { yylval.str_ptr = new string(yytext); return STAR; } +[/] { yylval.str_ptr = new string(yytext); return SLASH; } +:: { return DOUBLE_COLON; } +[:] { return ':'; } +[;] { return SEMICOLON; } +[[] { return '['; } +[]] { return ']'; } +[{] { return '{'; } +[}] { return '}'; } +[(] { return '('; } +[)] { return ')'; } +[,] { return ','; } +[=] { return '='; } +:= { return ASSIGN; } +[.] { return DOT; } + +[0-9]*[.][0-9]* { yylval.str_ptr = new string(yytext); return FLOATNUMBER; } +[0-9]* { yylval.str_ptr = new string(yytext); return NUMBER; } +[a-zA-Z_][a-zA-Z_0-9]{0,50} { yylval.str_ptr = new string(yytext); return IDENT; } +\"[^"\n]*\" { yytext[strlen(yytext)-1] = '\0'; yylval.str_ptr = new string(yytext+1); return STRING; } +\'[^'\n]*\' { yytext[strlen(yytext)-1] = '\0'; yylval.str_ptr = new string(yytext+1); return STRING; } + +. { return OTHER; } /* Need so that we handle all characters */ + +%% + |