159 lines
3.4 KiB
C
159 lines
3.4 KiB
C
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// Copyright (c) 1993-1999 Microsoft Corporation
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#include <stdio.h>
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#include <ctype.h>
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#include "y2.h"
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void
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cpyact( SSIZE_T offset)
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{
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/* copy C action to the next ; or closing } */
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int brac, c, match, s;
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SSIZE_T j, tok;
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writeline(faction);
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brac = 0;
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loop:
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c = unix_getc(finput);
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swt:
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switch( c )
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{
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case ';':
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if( brac == 0 )
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{
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putc( c , faction );
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return;
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}
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goto lcopy;
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case '{':
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brac++;
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goto lcopy;
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case '$':
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s = 1;
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tok = -1;
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c = unix_getc(finput);
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if( c == '<' )
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{
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/* type description */
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yungetc( c, finput );
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if( gettok() != TYPENAME ) error( "bad syntax on $<ident> clause" );
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tok = numbval;
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c = unix_getc(finput);
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}
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if( c == '$' )
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{
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fprintf( faction, "yyval");
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if( ntypes )
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{
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/* put out the proper tag... */
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if( tok < 0 ) tok = fdtype( *prdptr[nprod] );
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fprintf( faction, ".%s", typeset[tok] );
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}
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goto loop;
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}
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if( c == '-' )
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{
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s = -s;
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c = unix_getc(finput);
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}
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if( isdigit(c) )
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{
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j=0;
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while( isdigit(c) )
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{
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j= j*10+c-'0';
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c = unix_getc(finput);
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}
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j = j*s - offset;
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if( j > 0 )
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{
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error( "Illegal use of $%d", j+offset );
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}
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fprintf( faction, "yypvt[-%d]", -j );
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if( ntypes )
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{
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/* put out the proper tag */
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if( j+offset <= 0 && tok < 0 ) error( "must specify type of $%d", j+offset );
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if( tok < 0 ) tok = fdtype( prdptr[nprod][j+offset] );
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fprintf( faction, ".%s", typeset[tok] );
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}
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goto swt;
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}
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putc( '$' , faction );
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if( s<0 ) putc('-', faction );
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goto swt;
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case '}':
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if( --brac ) goto lcopy;
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putc( c, faction );
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return;
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case '/': /* look for comments */
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putc( c , faction );
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c = unix_getc(finput);
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if( c != '*' ) goto swt;
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/* it really is a comment */
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putc( c , faction );
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c = unix_getc(finput);
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while( c != EOF )
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{
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while( c=='*' )
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{
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putc( c , faction );
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if( (c=unix_getc(finput)) == '/' ) goto lcopy;
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}
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putc( c , faction );
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if( c == '\n' )++lineno;
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c = unix_getc(finput);
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}
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error( "EOF inside comment" );
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case '\'': /* character constant */
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match = '\'';
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goto string;
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case '"': /* character string */
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match = '"';
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string:
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putc( c , faction );
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while( c=unix_getc(finput) )
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{
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if( c=='\\' )
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{
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putc( c , faction );
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c=unix_getc(finput);
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if( c == '\n' ) ++lineno;
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}
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else if( c==match ) goto lcopy;
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else if( c=='\n' ) error( "newline in string or char. const." );
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putc( c , faction );
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}
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error( "EOF in string or character constant" );
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case -1: /* EOF */
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error("action does not terminate" );
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case '\n':
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++lineno;
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goto lcopy;
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}
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lcopy:
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putc( c , faction );
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goto loop;
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}
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