Initial commit

1 files changed, 624 insertions, 0 deletions

diff --git a/pkg/utilities/nttools/tunits/parseunits.x b/pkg/utilities/nttools/tunits/parseunits.x
new file mode 100644
index 00000000..1a420785
--- /dev/null
+++ b/pkg/utilities/nttools/tunits/parseunits.x
@@ -0,0 +1,624 @@
+include	<ctype.h>
+
+#* B.Simon	??		original
+#  Phil Hodge	12-Jul-2005	add 'bool yydebug' and 'int get_token()' to
+#				parse_units
+
+define	YYMAXDEPTH	32
+define	YYOPLEN		1
+define	yyparse		unit_parse
+
+define	SZ_SHORTSTR	31
+
+define	Y_WRONG		257
+define	Y_DONE		258
+define	Y_LPAR		259
+define	Y_RPAR		260
+define	Y_CU		261
+define	Y_SQ		262
+define	Y_ID		263
+define	Y_NUM		264
+define	Y_DIV		265
+define	Y_MUL		266
+define	Y_POW		267
+define	yyclearin	yychar = -1
+define	yyerrok		yyerrflag = 0
+define	YYMOVE		call amovi (Memi[$1], Memi[$2], YYOPLEN)
+define	YYERRCODE	256
+
+# line 159 "parseunits.y"
+
+
+# PARSE_UNITS -- Parse a units string into the internal format
+
+pointer procedure parse_units (ab, units)
+
+pointer	ab		# i: abbreviation hash table
+char	units[ARB]	# i: expression to be parsed
+#--
+include "parseunits.com"
+
+int	len, fd
+pointer	sp
+
+string	syntax	"Syntax error in units"
+
+bool	yydebug
+int	strlen(), stropen(), yyparse()
+int	get_token()
+extern	get_token
+
+begin
+	len = strlen (units) + 1
+	fd = stropen (units, len, READ_ONLY)
+
+	call smark (sp)
+	call salloc (tokbuf, SZ_FNAME, TY_CHAR)
+
+	debug = NO
+	yydebug = (debug == YES)
+	nxttok = 0
+	abrev = ab
+	tun = NULL	
+
+	if (yyparse (fd, yydebug, get_token) == ERR)
+	    call tuniterr (syntax, units)
+
+	call close (fd)
+	call sfree (sp)
+	return (tun)
+end
+
+# GET_TOKEN -- Retrieve next token from units string
+
+int procedure get_token (fd, value)
+
+int	fd		# i: File containing expression to be lexed
+pointer	value		# o: Address on parse stack to store token
+#--
+include	"parseunits.com"
+
+char	ch
+int	type, index, powers[4]
+pointer	sp, typename, token
+
+string	pownames  "sq,square,cu,cubic"
+data	powers    / Y_SQ, Y_SQ, Y_CU, Y_CU /
+
+bool	streq()
+int	getc(), word_match()
+
+begin
+	call smark (sp)
+	call salloc (typename, SZ_FNAME, TY_CHAR)
+
+	token = tokbuf + nxttok
+	Memi[value] = token
+
+	repeat {
+	    ch = getc (fd, ch)
+	} until (ch != ' ' && ch != '\t')
+
+	if (ch == EOF) {
+	    type = Y_DONE
+	    call strcpy ("END", Memc[typename], SZ_FNAME)
+
+	} else if (IS_ALPHA (ch)) {
+	    type = Y_ID
+	    call strcpy ("IDENT", Memc[typename], SZ_FNAME)
+
+	    while (IS_ALPHA (ch)) {
+		Memc[tokbuf+nxttok] = ch
+		nxttok = nxttok + 1
+		ch = getc (fd, ch)
+	    }
+	    call ungetc (fd, ch)
+
+	    Memc[tokbuf+nxttok] = EOS
+	    index = word_match (Memc[token], pownames)
+
+	    if (index > 0) {
+		type = powers[index]
+		call strcpy ("POWER", Memc[typename], SZ_FNAME)
+
+	    } else if (streq (Memc[token], "per")) {
+		type = Y_DIV
+		call strcpy ("DIV", Memc[typename], SZ_FNAME)
+	    }
+
+	} else if (ch == '-' || IS_DIGIT (ch)) {
+	    type = Y_NUM
+	    call strcpy ("NUMBER", Memc[typename], SZ_FNAME)
+
+	    Memc[tokbuf+nxttok] = ch
+	    nxttok = nxttok + 1
+	    ch = getc (fd, ch)
+
+	    while (IS_DIGIT (ch)) {
+		Memc[tokbuf+nxttok] = ch
+		nxttok = nxttok + 1
+		ch = getc (fd, ch)
+	    }
+	    call ungetc (fd, ch)
+
+	} else {
+	    Memc[tokbuf+nxttok] = ch
+	    nxttok = nxttok + 1
+
+	    switch (ch) {
+	    case '*':
+		ch = getc (fd, ch)
+		if (ch == '*') {
+		    type = Y_POW
+		    call strcpy ("EXPON", Memc[typename], SZ_FNAME)
+
+		    Memc[tokbuf+nxttok] = ch
+		    nxttok = nxttok + 1
+		} else {
+		    type = Y_MUL
+		    call strcpy ("MUL", Memc[typename], SZ_FNAME)
+
+		    call ungetc (fd, ch)
+		}
+
+	    case '/':
+		type = Y_DIV
+		call strcpy ("DIV", Memc[typename], SZ_FNAME)
+
+	    case '^':
+		type = Y_POW
+		call strcpy ("EXPON", Memc[typename], SZ_FNAME)
+
+	    default:
+		type = Y_WRONG
+		call strcpy ("ERROR", Memc[typename], SZ_FNAME)
+	    }
+	}
+
+	Memc[tokbuf+nxttok] = EOS
+	nxttok = nxttok + 1
+
+	if (debug == YES) {
+	    call eprintf ("Token is %s [%s]\n")
+	    if (Memc[token] == EOS)  {
+		call pargstr ("EOS")
+	    } else {
+		call pargstr (Memc[token])
+	    }
+	    call pargstr (Memc[typename])
+	}
+
+	call sfree (sp)
+	return (type)
+end
+define	YYNPROD		15
+define	YYLAST		43
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# Parser for yacc output, translated to the IRAF SPP language.  The contents
+# of this file form the bulk of the source of the parser produced by Yacc.
+# Yacc recognizes several macros in the yaccpar input source and replaces
+# them as follows:
+#	A	user suppled "global" definitions and declarations
+# 	B	parser tables
+# 	C	user supplied actions (reductions)
+# The remainder of the yaccpar code is not changed.
+
+define	yystack_	10		# statement labels for gotos
+define	yynewstate_	20
+define	yydefault_	30
+define	yyerrlab_	40
+define	yyabort_	50
+
+define	YYFLAG		(-1000)		# defs used in user actions
+define	YYERROR		goto yyerrlab_
+define	YYACCEPT	return (OK)
+define	YYABORT		return (ERR)
+
+
+# YYPARSE -- Parse the input stream, returning OK if the source is
+# syntactically acceptable (i.e., if compilation is successful),
+# otherwise ERR.  The parameters YYMAXDEPTH and YYOPLEN must be
+# supplied by the caller in the %{ ... %} section of the Yacc source.
+# The token value stack is a dynamically allocated array of operand
+# structures, with the length and makeup of the operand structure being
+# application dependent.
+
+int procedure yyparse (fd, yydebug, yylex)
+
+int	fd			# stream to be parsed
+bool	yydebug			# print debugging information?
+int	yylex()			# user-supplied lexical input function
+extern	yylex()
+
+short	yys[YYMAXDEPTH]		# parser stack -- stacks tokens
+pointer	yyv			# pointer to token value stack
+pointer	yyval			# value returned by action
+pointer	yylval			# value of token
+int	yyps			# token stack pointer
+pointer	yypv			# value stack pointer
+int	yychar			# current input token number
+int	yyerrflag		# error recovery flag
+int	yynerrs			# number of errors
+
+short	yyj, yym		# internal variables
+pointer	yysp, yypvt
+short	yystate, yyn
+int	yyxi, i
+errchk	salloc, yylex
+
+
+include	"parseunits.com"
+
+char		units[SZ_FNAME]
+
+int		num_unstr()
+pointer		mul_unstr(), div_unstr(), pow_unstr(), set_unstr()
+
+short	yyexca[6]
+data	(yyexca(i),i=  1,  6)	/  -1,   1,   0,  -1,  -2,   0/
+short	yyact[43]
+data	(yyact(i),i=  1,  8)	/  23,  10,  11,  13,  13,  12,  11,  13/
+data	(yyact(i),i=  9, 16)	/  12,  11,  13,  17,   3,  24,  16,   4/
+data	(yyact(i),i= 17, 24)	/  22,   8,   9,   7,   4,  19,   8,   9/
+data	(yyact(i),i= 25, 32)	/   7,   8,   9,   7,  18,   2,   6,   5/
+data	(yyact(i),i= 33, 40)	/   1,   0,  14,   0,  15,   0,   0,   0/
+data	(yyact(i),i= 41, 43)	/   0,  20,  21/
+short	yypact[25]
+data	(yypact(i),i=  1,  8)	/-244,-1000,-257,-1000,-239,-236,-1000,-253/
+data	(yypact(i),i=  9, 16)	/-235,-242,-1000,-239,-239,-248,-260,-1000/
+data	(yypact(i),i= 17, 24)	/-251,-1000,-1000,-1000,-263,-264,-1000,-1000/
+data	(yypact(i),i= 25, 25)	/-1000/
+short	yypgo[5]
+data	(yypgo(i),i=  1,  5)	/   0,  32,  29,  31,  30/
+short	yyr1[15]
+data	(yyr1(i),i=  1,  8)	/   0,   1,   1,   2,   2,   2,   2,   2/
+data	(yyr1(i),i=  9, 15)	/   3,   3,   4,   4,   4,   4,   4/
+short	yyr2[15]
+data	(yyr2(i),i=  1,  8)	/   0,   2,   1,   3,   3,   3,   3,   1/
+data	(yyr2(i),i=  9, 15)	/   2,   1,   3,   2,   2,   2,   1/
+short	yychk[25]
+data	(yychk(i),i=  1,  8)	/-1000,  -1,  -2, 256, 259,  -3,  -4, 263/
+data	(yychk(i),i=  9, 16)	/ 261, 262, 258, 266, 265, 267,  -2,  -4/
+data	(yychk(i),i= 17, 24)	/ 267, 264, 263, 263,  -2,  -2, 264, 260/
+data	(yychk(i),i= 25, 25)	/ 264/
+short	yydef[25]
+data	(yydef(i),i=  1,  8)	/   0,  -2,   0,   2,   0,   7,   9,  14/
+data	(yydef(i),i=  9, 16)	/   0,   0,   1,   0,   0,   0,   0,   8/
+data	(yydef(i),i= 17, 24)	/   0,  11,  12,  13,   4,   5,   6,   3/
+data	(yydef(i),i= 25, 25)	/  10/
+
+begin
+	call smark (yysp)
+	call salloc (yyv, (YYMAXDEPTH+2) * YYOPLEN, TY_STRUCT)
+
+	# Initialization.  The first element of the dynamically allocated
+	# token value stack (yyv) is used for yyval, the second for yylval,
+	# and the actual stack starts with the third element.
+
+	yystate = 0
+	yychar = -1
+	yynerrs = 0
+	yyerrflag = 0
+	yyps = 0
+	yyval = yyv
+	yylval = yyv + YYOPLEN
+	yypv = yylval
+
+yystack_
+	# SHIFT -- Put a state and value onto the stack.  The token and
+	# value stacks are logically the same stack, implemented as two
+	# separate arrays.
+
+	if (yydebug) {
+	    call printf ("state %d, char 0%o\n")
+		call pargs (yystate)
+		call pargi (yychar)
+	}
+	yyps = yyps + 1
+	yypv = yypv + YYOPLEN
+	if (yyps > YYMAXDEPTH) {
+	    call sfree (yysp)
+	    call eprintf ("yacc stack overflow\n")
+	    return (ERR)
+	}
+	yys[yyps] = yystate
+	YYMOVE (yyval, yypv)
+
+yynewstate_
+	# Process the new state.
+	yyn = yypact[yystate+1]
+
+	if (yyn <= YYFLAG)
+	    goto yydefault_			# simple state
+
+	# The variable "yychar" is the lookahead token.
+	if (yychar < 0) {
+	    yychar = yylex (fd, yylval)
+	    if (yychar < 0)
+		yychar = 0
+	}
+	yyn = yyn + yychar
+	if (yyn < 0 || yyn >= YYLAST)
+	    goto yydefault_
+
+	yyn = yyact[yyn+1]
+	if (yychk[yyn+1] == yychar) {		# valid shift
+	    yychar = -1
+	    YYMOVE (yylval, yyval)
+	    yystate = yyn
+	    if (yyerrflag > 0)
+		yyerrflag = yyerrflag - 1
+	    goto yystack_
+	}
+
+yydefault_
+	# Default state action.
+
+	yyn = yydef[yystate+1]
+	if (yyn == -2) {
+	    if (yychar < 0) {
+		yychar = yylex (fd, yylval)
+		if (yychar < 0)
+		    yychar = 0
+	    }
+
+	    # Look through exception table.
+	    yyxi = 1
+	    while ((yyexca[yyxi] != (-1)) || (yyexca[yyxi+1] != yystate))
+		yyxi = yyxi + 2
+	    for (yyxi=yyxi+2;  yyexca[yyxi] >= 0;  yyxi=yyxi+2) {
+		if (yyexca[yyxi] == yychar)
+		    break
+	    }
+
+	    yyn = yyexca[yyxi+1]
+	    if (yyn < 0) {
+		call sfree (yysp)
+		return (OK)			# ACCEPT -- all done
+	    }
+	}
+
+
+	# SYNTAX ERROR -- resume parsing if possible.
+
+	if (yyn == 0) {
+	    switch (yyerrflag) {
+	    case 0, 1, 2:
+		if (yyerrflag == 0) {		# brand new error
+		    call eprintf ("syntax error\n")
+yyerrlab_
+		    yynerrs = yynerrs + 1
+		    # fall through...
+		}
+
+	    # case 1:
+	    # case 2: incompletely recovered error ... try again
+		yyerrflag = 3
+
+		# Find a state where "error" is a legal shift action.
+		while (yyps >= 1) {
+		    yyn = yypact[yys[yyps]+1] + YYERRCODE
+		    if ((yyn >= 0) && (yyn < YYLAST) &&
+			(yychk[yyact[yyn+1]+1] == YYERRCODE)) {
+			    # Simulate a shift of "error".
+			    yystate = yyact[yyn+1]
+			    goto yystack_
+		    }
+		    yyn = yypact[yys[yyps]+1]
+
+		    # The current yyps has no shift on "error", pop stack.
+		    if (yydebug) {
+			call printf ("error recovery pops state %d, ")
+			    call pargs (yys[yyps])
+			call printf ("uncovers %d\n")
+			    call pargs (yys[yyps-1])
+		    }
+		    yyps = yyps - 1
+		    yypv = yypv - YYOPLEN
+		}
+
+		# ABORT -- There is no state on the stack with an error shift.
+yyabort_
+		call sfree (yysp)
+		return (ERR)
+
+
+	    case 3: # No shift yet; clobber input char.
+
+		if (yydebug) {
+		    call printf ("error recovery discards char %d\n")
+			call pargi (yychar)
+		}
+
+		if (yychar == 0)
+		    goto yyabort_		# don't discard EOF, quit
+		yychar = -1
+		goto yynewstate_		# try again in the same state
+	    }
+	}
+
+
+	# REDUCE -- Reduction by production yyn.
+
+	if (yydebug) {
+	    call printf ("reduce %d\n")
+		call pargs (yyn)
+	}
+	yyps  = yyps - yyr2[yyn+1]
+	yypvt = yypv
+	yypv  = yypv - yyr2[yyn+1] * YYOPLEN
+	YYMOVE (yypv + YYOPLEN, yyval)
+	yym   = yyn
+
+	# Consult goto table to find next state.
+	yyn = yyr1[yyn+1]
+	yyj = yypgo[yyn+1] + yys[yyps] + 1
+	if (yyj >= YYLAST)
+	    yystate = yyact[yypgo[yyn+1]+1]
+	else {
+	    yystate = yyact[yyj+1]
+	    if (yychk[yystate+1] != -yyn)
+		yystate = yyact[yypgo[yyn+1]+1]
+	}
+
+	# Perform action associated with the grammar rule, if any.
+	switch (yym) {
+	    
+case 1:
+# line 28 "parseunits.y"
+{
+		    # Normal exit. Return pointer to units structure
+		    if (debug == YES)
+			call eprintf ("\n")
+
+		    tun = Memi[yypvt-YYOPLEN]
+		    return (OK)
+		}
+case 2:
+# line 36 "parseunits.y"
+{
+		    # Syntax error
+		    if (debug == YES)
+			call eprintf ("\n")
+
+		    return (ERR)
+		}
+case 3:
+# line 45 "parseunits.y"
+{
+		    # Parenthesized expression
+		    Memi[yyval] = Memi[yypvt-2*YYOPLEN]
+		}
+case 4:
+# line 49 "parseunits.y"
+{
+		    # Multiply two units expressions
+		    Memi[yyval] = mul_unstr (Memi[yypvt-2*YYOPLEN], Memi[yypvt])
+		    call free_unstr (Memi[yypvt-2*YYOPLEN])
+		    call free_unstr (Memi[yypvt])
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 5:
+# line 61 "parseunits.y"
+{
+		    # Divide two units expressions
+		    Memi[yyval] = div_unstr (Memi[yypvt-2*YYOPLEN], Memi[yypvt])
+		    call free_unstr (Memi[yypvt-2*YYOPLEN])
+		    call free_unstr (Memi[yypvt])
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 6:
+# line 73 "parseunits.y"
+{
+		    # Raise expression to a power
+		    Memi[yyval] = pow_unstr (Memi[yypvt-2*YYOPLEN], num_unstr (Memc[Memi[yypvt]]))
+		    call free_unstr (Memi[yypvt-2*YYOPLEN])
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 7:
+# line 84 "parseunits.y"
+{
+		    # List of terms
+		    Memi[yyval] = Memi[yypvt]
+		}
+case 8:
+# line 89 "parseunits.y"
+{
+		    # Implicit multiplication
+		    Memi[yyval] = mul_unstr (Memi[yypvt-YYOPLEN], Memi[yypvt])
+		    call free_unstr (Memi[yypvt-YYOPLEN])
+		    call free_unstr (Memi[yypvt])
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 9:
+# line 101 "parseunits.y"
+{
+		    # Simple term
+		    Memi[yyval] = Memi[yypvt]
+		}
+case 10:
+# line 106 "parseunits.y"
+{
+		    # Raise units to a power
+		    Memi[yyval] = set_unstr (abrev, Memc[Memi[yypvt-2*YYOPLEN]], 
+				    	num_unstr (Memc[Memi[yypvt]]))
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 11:
+# line 117 "parseunits.y"
+{
+		    # Implicitly raise to a power
+		    Memi[yyval] = set_unstr (abrev, Memc[Memi[yypvt-YYOPLEN]], 
+				    num_unstr (Memc[Memi[yypvt]]))
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 12:
+# line 128 "parseunits.y"
+{
+		    # Cubic prefix
+		    Memi[yyval] = set_unstr (abrev, Memc[Memi[yypvt]], 3)
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 13:
+# line 138 "parseunits.y"
+{
+		    # Square prefix
+		    Memi[yyval] = set_unstr (abrev, Memc[Memi[yypvt]], 2)
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}
+case 14:
+# line 148 "parseunits.y"
+{
+		    # Simple name
+		    Memi[yyval] = set_unstr (abrev, Memc[Memi[yypvt]], 1)
+
+		    if (debug == YES) {
+			call str_unstr (Memi[yyval], units, SZ_FNAME)
+			call eprintf ("Units are %s\n")
+			call pargstr (units)
+		    }
+		}	}
+
+	goto yystack_				# stack new state and value
+end