shithub: pprolog

ref: daadb2b174846cda95e51e0c4c94bcb748da4a69
dir: /flags.c/

#include <u.h>
#include <libc.h>
#include <bio.h>

#include "dat.h"
#include "fns.h"

void setcharconversion(Term *);
void setdebug(Term *);
void setunknown(Term *);
void setdoublequotes(Term *);

static Rune *boundedvals[] = {
	[BoundedTrue] = L"true",
	[BoundedFalse] = L"false"
};

static Rune *integerroundvals[] = {
	[IntegerRoundDown] = L"down",
	[IntegerRoundTowardZero] = L"toward_zero"
};

static Rune *charconversionvals[] = {
	[CharConversionOn] = L"on",
	[CharConversionOff] = L"off"
};

static Rune *debugvals[] = {
	[DebugOff] = L"off",
	[DebugOn] = L"on"
};

static Rune *unknownvals[] = {
	[UnknownError] = L"error",
	[UnknownFail] = L"fail",
	[UnknownWarning] = L"warning"
};

static Rune *doublequotesvals[] = {
	[DoubleQuotesChars] = L"chars",
	[DoubleQuotesCodes] = L"codes",
	[DoubleQuotesAtom] = L"atom"
};

void
initflags(void)
{
	uvlong zero = 0;

	flagbounded = BoundedTrue;
	flagmaxinteger = (~zero)>>1;
	flagmininteger = flagmaxinteger+1;
	flagintegerroundingfunction = IntegerRoundDown;
	flagcharconversion = CharConversionOff;
	flagdebug = DebugOff;
	flagunknown = UnknownError;
	flagdoublequotes = DoubleQuotesChars;
}

void
setflag(Rune *flag, Term *value)
{
	if(runestrcmp(flag, L"char_conversion") == 0)
		setcharconversion(value);
	else if(runestrcmp(flag, L"debug") == 0)
		setdebug(value);
	else if(runestrcmp(flag, L"unknown") == 0)
		setunknown(value);
	else if(runestrcmp(flag, L"double_quotes") == 0)
		setdoublequotes(value);
}

Term *
getallflags(void)
{
	Term *boundedval = mkatom(boundedvals[flagbounded]);
	Term *maxintval = mkinteger(flagmaxinteger);
	Term *minintval = mkinteger(flagmininteger);
	Term *roundingval = mkatom(integerroundvals[flagintegerroundingfunction]);
	Term *charconvval = mkatom(charconversionvals[flagcharconversion]);
	Term *debugval = mkatom(debugvals[flagdebug]);
	Term *unknownval = mkatom(unknownvals[flagunknown]);
	Term *doublequotesval = mkatom(doublequotesvals[flagdoublequotes]);

	Term *boundedkey = mkatom(L"bounded");
	boundedkey->next = boundedval;
	Term *maxintkey = mkatom(L"max_integer");
	maxintkey->next = maxintval;
	Term *minintkey = mkatom(L"min_integer");
	minintkey->next = minintval;
	Term *roundingkey = mkatom(L"integer_rounding_function");
	roundingkey->next = roundingval;
	Term *charconvkey = mkatom(L"character_conversion");
	charconvkey->next = charconvval;
	Term *debugkey = mkatom(L"debug");
	debugkey->next = debugval;
	Term *unknownkey = mkatom(L"unknown");
	unknownkey->next = unknownval;
	Term *doublequoteskey = mkatom(L"double_quotes");
	doublequoteskey->next = doublequotesval;

	Term *boundedflag = mkcompound(L"flag", 2, boundedkey);
	Term *maxintflag = mkcompound(L"flag", 2, maxintkey);
	Term *minintflag = mkcompound(L"flag", 2, minintkey);
	Term *roundingflag = mkcompound(L"flag", 2, roundingkey);
	Term *charconvflag = mkcompound(L"flag", 2, charconvkey);
	Term *debugflag = mkcompound(L"flag", 2, debugkey);
	Term *unknownflag = mkcompound(L"flag", 2, unknownkey);
	Term *doublequotesflag = mkcompound(L"flag", 2, doublequoteskey);

	boundedflag->next = maxintflag;
	maxintflag->next = minintflag;
	minintflag->next = roundingflag;
	roundingflag->next = charconvflag;
	charconvflag->next = debugflag;
	debugflag->next = unknownflag;
	unknownflag->next = doublequotesflag;

	return boundedflag;
}

void
setcharconversion(Term *value)
{
	int max = 2;
	int i;
	for(i = 0; i < max; i++){
		if(runestrcmp(value->text, charconversionvals[i]) == 0)
			flagcharconversion = i;
	}
}

void
setdebug(Term *value)
{
	int max = 2;
	int i;
	for(i = 0; i < max; i++){
		if(runestrcmp(value->text, debugvals[i]) == 0)
			flagdebug = i;
	}
}

void
setunknown(Term *value)
{
	int max = 3;
	int i;
	for(i = 0; i < max; i++){
		if(runestrcmp(value->text, unknownvals[i]) == 0)
			flagunknown = i;
	}
}

void
setdoublequotes(Term *value)
{
	int max = 3;
	int i;
	for(i = 0; i < max; i++){
		if(runestrcmp(value->text, doublequotesvals[i]) == 0)
			flagdoublequotes = i;
	}
}