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- #include <stdio.h>
- #include "y2.h"
-
- cpyact(offset)
- {
- /* copy C action to the next ; or closing } */
- int brac, c, match, j, s, tok;
-
- fprintf( faction, "\n# line %d\n", lineno );
-
- brac = 0;
-
- loop:
- c = unix_getc(finput);
- swt:
- switch( c )
- {
-
- case ';':
- if( brac == 0 )
- {
- putc( c , faction );
- return;
- }
- goto lcopy;
-
- case '{':
- brac++;
- goto lcopy;
-
- case '$':
- s = 1;
- tok = -1;
- c = unix_getc(finput);
- if( c == '<' )
- {
- /* type description */
- ungetc( c, finput );
- if( gettok() != TYPENAME ) error( "bad syntax on $<ident> clause" );
- tok = numbval;
- c = unix_getc(finput);
- }
- if( c == '$' )
- {
- fprintf( faction, "yyval");
- if( ntypes )
- {
- /* put out the proper tag... */
- if( tok < 0 ) tok = fdtype( *prdptr[nprod] );
- fprintf( faction, ".%s", typeset[tok] );
- }
- goto loop;
- }
- if( c == '-' )
- {
- s = -s;
- c = unix_getc(finput);
- }
- if( isdigit(c) )
- {
- j=0;
- while( isdigit(c) )
- {
- j= j*10+c-'0';
- c = unix_getc(finput);
- }
-
- j = j*s - offset;
- if( j > 0 )
- {
- error( "Illegal use of $%d", j+offset );
- }
-
- fprintf( faction, "yypvt[-%d]", -j );
- if( ntypes )
- {
- /* put out the proper tag */
- if( j+offset <= 0 && tok < 0 ) error( "must specify type of $%d", j+offset );
- if( tok < 0 ) tok = fdtype( prdptr[nprod][j+offset] );
- fprintf( faction, ".%s", typeset[tok] );
- }
- goto swt;
- }
- putc( '$' , faction );
- if( s<0 ) putc('-', faction );
- goto swt;
-
- case '}':
- if( --brac ) goto lcopy;
- putc( c, faction );
- return;
-
-
- case '/': /* look for comments */
- putc( c , faction );
- c = unix_getc(finput);
- if( c != '*' ) goto swt;
-
- /* it really is a comment */
-
- putc( c , faction );
- c = unix_getc(finput);
- while( c != EOF )
- {
- while( c=='*' )
- {
- putc( c , faction );
- if( (c=unix_getc(finput)) == '/' ) goto lcopy;
- }
- putc( c , faction );
- if( c == '\n' )++lineno;
- c = unix_getc(finput);
- }
- error( "EOF inside comment" );
-
- case '\'': /* character constant */
- match = '\'';
- goto string;
-
- case '"': /* character string */
- match = '"';
-
- string:
-
- putc( c , faction );
- while( c=unix_getc(finput) )
- {
-
- if( c=='\\' )
- {
- putc( c , faction );
- c=unix_getc(finput);
- if( c == '\n' ) ++lineno;
- }
- else if( c==match ) goto lcopy;
- else if( c=='\n' ) error( "newline in string or char. const." );
- putc( c , faction );
- }
- error( "EOF in string or character constant" );
-
- case -1: /* EOF */
- error("action does not terminate" );
-
- case '\n':
- ++lineno;
- goto lcopy;
-
- }
-
- lcopy:
- putc( c , faction );
- goto loop;
- }
-