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%{
/*
csound_sco.lex:
Copyright (C) 2013 March
John ffitch
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "csoundCore.h"
#include "score_param.h"
#include "csound_scoparse.h"
#define YYSTYPE MYFLT
#define YYLTYPE SCOTOKEN
#define YY_DECL int yylex (YYLTYPE *lvalp, CSOUND *csound, yyscan_t yyscanner)
#include "corfile.h"
YYLTYPE *yylval_param;
YYLTYPE *yylloc_param;
static SCOTOKEN *make_string(CSOUND *, char *);
static SCOTOKEN *make_int(CSOUND *, int);
static SCOTOKEN *make_num(CSOUND *, double);
extern void *fopen_path(CSOUND *, FILE **, char *, char *, char *, int);
#define YY_EXTRA_TYPE SCORE_PARM *
#define PARM yyget_extra(yyscanner)
#define YY_USER_INIT
struct yyguts_t;
static SCOTOKEN *do_at(CSOUND *, int, struct yyguts_t*);
%}
%option reentrant
%option bison-bridge
%option bison-locations
%option prefix="csound_sco"
%option outfile="Engine/csound_scolex.c"
%option stdout
STRCONST \"(\\.|[^\"])*\"
STRCONSTe \"(\\.|[^\"])*$
INTGR -?[0-9]+
NUMBER -?[0-9]+\.?[0-9]*([eE][-+]?[0-9]+)?|\.[0-9]+([eE][-+]?[0-9]+)?|0[xX][0-9a-fA-F]+
WHITE [ \t]+
OPTWHITE [ \t]*
CONT \\[ \t]*(;.*)?\n
LINE "#line"
FILE "#source"
EXIT "#exit"
FNAME [a-zA-Z0-9/:.+-_]+
NPX "np^"${INTGR}
PPX "pp^"${INTGR}
CNPX "NP^"${INTGR}
CPPX "PP^"${INTGR}
%x line
%x src
%%
"\r" { } /* EATUP THIS PART OF WINDOWS NEWLINE */
{CONT} { csound_scoset_lineno(1+csound_scoget_lineno(yyscanner),
yyscanner);
}
"\n" { int n = csound_scoget_lineno(yyscanner)+1;
csound_scoset_lineno(n, yyscanner);
return NEWLINE; }
${NPX} { return T_NP; }
${PPX} { return T_PP; }
${CNPX} { return T_CNP; }
${CPPX} { return T_CPP; }
"a" { return yytext[0];}
"b" { return yytext[0];}
"e" { return yytext[0];}
"f" { return yytext[0];}
"i" { return yytext[0];}
"m" { return yytext[0];}
"n" { return yytext[0];}
"q" { return yytext[0];}
"r" { return yytext[0];}
"s" { return yytext[0];}
"t" { return yytext[0];}
"v" { return yytext[0];}
"w" { return yytext[0];}
"x" { return yytext[0];}
"y" { return yytext[0];}
"z" { return yytext[0];}
"(" { return '('; }
")" { return ')'; }
"[" { return '['; }
"]" { return ']'; }
"{" { return '}'; }
"}" { return '}'; }
"+" { return '+'; }
"-" { return '-'; }
"*" { return '*'; }
"/" { return '/'; }
"%" { return '%'; }
"\^" { return '^'; }
"!" { return '!'; }
">" { return '>'; }
"<" { return '<'; }
"|" { return '|'; }
"&" { return '&'; }
"#" { return '#'; }
"~" { return '~'; }
"." { return '.'; }
"@@"{OPTWHITE}{INTGR} { lvalp = do_at(csound, 1, yyg);
return INTEGER_TOKEN; }
"@"{OPTWHITE}{INTGR} { lvalp = do_at(csound, 0, yyg);
return INTEGER_TOKEN; }
{STRCONST} { lvalp = make_string(csound, yytext);
return (STRING_TOKEN); }
{STRCONSTe} { lvalp = make_string(csound, yytext);
csound->Message(csound,
Str("unterminated string found on line %d >>%s<<\n"),
csound_scoget_lineno(yyscanner),
yytext);
return (STRING_TOKEN); }
{INTGR} {
lvalp = make_int(csound, atoi(yytext)); return (INTEGER_TOKEN);
}
{NUMBER} { lvalp = make_num(csound, atof(yytext)); return (NUMBER_TOKEN); }
{WHITE} { }
{LINE} { BEGIN(line); }
<line>[ \t]* /* eat the whitespace */
<line>{INTGR} { csound_scoset_lineno(atoi(yytext), yyscanner);
printf("set line to %d (%s)\n", csound_scoget_lineno(yyscanner), yytext); }
<line>"\n" {BEGIN(INITIAL);}
{FILE} { BEGIN(src); }
<src>[ \t]* /* eat the whitespace */
<src>{FNAME} { PARM->locn = atoi(yytext); }
<src>"\n" { BEGIN(INITIAL); }
{EXIT} { yyterminate(); }
<<EOF>> {
yyterminate();
}
. { fprintf(stderr, "unknown character %c(%.2x)\n",
yytext[0], yytext[0]);
}
%%
static SCOTOKEN *make_string(CSOUND *csound, char *s)
{
SCOTOKEN *ans = (SCOTOKEN*)mcalloc(csound, sizeof(SCOTOKEN));
ans->type = STRING_TOKEN;
ans->strbuff = strdup(s);
return ans;
}
static SCOTOKEN *make_int(CSOUND *csound, int i)
{
SCOTOKEN *ans = (SCOTOKEN*)mcalloc(csound, sizeof(SCOTOKEN));
ans->type = INTEGER_TOKEN;
ans->ival = i;
return ans;
}
static SCOTOKEN *make_num(CSOUND *csound, double f)
{
SCOTOKEN *ans = (SCOTOKEN*)mcalloc(csound, sizeof(SCOTOKEN));
ans->type = NUMBER_TOKEN;
ans->fval = (MYFLT)f;
return ans;
}
static SCOTOKEN *do_at(CSOUND *csound, int k, struct yyguts_t *yyg)
{
SCOTOKEN *ans = (SCOTOKEN*)mcalloc(csound, sizeof(SCOTOKEN));
int n, i = 1;
char *s = yytext;
while (*s=='@') s++;
n = atoi(s);
while (i<=n-k && i< 0x4000000) i <<= 1;
ans->type = INTEGER_TOKEN;
ans->ival = i;
return ans;
}
char *csound_scoget_current_pointer(void *yyscanner)
{
struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
return yyg->yy_c_buf_p;
}
int csound_scoget_locn(void *yyscanner)
{
// struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
return PARM->locn;
}
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