lib/intExp.c File Reference

#include "common.h"
#include "kxTok.h"

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Defines
#define	nextTok()   (tok = tok->next)
Functions
static double	expression ()
static double	number ()
static double	atom ()
static double	uMinus ()
static double	mulDiv ()
static double	addSub ()
double	doubleExp (char *text)
int	intExp (char *text)
Variables
static char const	rcsid [] = "$Id: intExp.c,v 1.6 2003/05/06 07:33:43 kate Exp $"
static struct kxTok *	tok

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Define Documentation

 

#define nextTok

(

)

(tok = tok->next)

Definition at line 14 of file intExp.c.

Referenced by addSub(), atom(), mulDiv(), number(), and uMinus().

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Function Documentation

static double addSub

(

)

[static]

Definition at line 111 of file intExp.c.

References kxtAdd, kxtSub, mulDiv(), nextTok, tok, and kxTok::type.

Referenced by expression().

{
double val;
val = mulDiv();
for (;;)
    {
    if (tok->type == kxtAdd)
        {
        nextTok();
        val += mulDiv();
        }
    else if (tok->type == kxtSub)
        {
        nextTok();
        val -= mulDiv();
        }
    else
        break;
    }
return val;
}

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static double atom

(

)

[static]

Definition at line 51 of file intExp.c.

References errAbort(), expression(), kxtCloseParen, kxtOpenParen, nextTok, number(), tok, and kxTok::type.

Referenced by uMinus().

{
double val;
if (tok->type == kxtOpenParen)
    {
    nextTok();
    val = expression();
    if (tok->type == kxtCloseParen)
        {
        nextTok();
        return val;
        }
    else
        {
        errAbort("Unmatched parenthesis");
        return 0;
        }
    }
else
    return number();
}

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double doubleExp

(

char *

text

)

Definition at line 140 of file intExp.c.

References expression(), FALSE, kxTokenize(), slFreeList(), and tok.

Referenced by intExp().

{
double val;
struct kxTok *tokList = tok = kxTokenize(text, FALSE);
val = expression();
slFreeList(&tokList);
return val;
}

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static double expression

(

)

[static]

Definition at line 134 of file intExp.c.

References addSub().

Referenced by atom(), and doubleExp().

{
return addSub();
}

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int intExp

(

char *

text

)

Definition at line 150 of file intExp.c.

References doubleExp(), and round.

Referenced by cgiIntExp().

{
return round(doubleExp(text));
}

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static double mulDiv

(

)

[static]

Definition at line 89 of file intExp.c.

References kxtDiv, kxtMul, nextTok, tok, kxTok::type, and uMinus().

Referenced by addSub().

{
double val = uMinus();
for (;;)
    {
    if (tok->type == kxtMul)
        {
        nextTok();
        val *= uMinus();
        }
    else if (tok->type == kxtDiv)
        {
        nextTok();
        val /= uMinus();
        }
    else
        break;
    }
return val;
}

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static double number

(

)

[static]

Definition at line 38 of file intExp.c.

References errAbort(), nextTok, kxTok::string, and tok.

Referenced by atom().

{
double val;
if (tok == NULL)
    errAbort("Parse error in numerical expression");
if (!isdigit(tok->string[0]))
    errAbort("Expecting number, got %s", tok->string);
val = atof(tok->string);
nextTok();
return val;
}

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static double uMinus

(

)

[static]

Definition at line 75 of file intExp.c.

References atom(), kxtSub, nextTok, tok, and kxTok::type.

Referenced by mulDiv().

{
double val;
if (tok->type == kxtSub)
    {
    nextTok();
    val = -atom();
    return val;
    }
else
    return atom();
}

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Variable Documentation

char const rcsid[] = "$Id: intExp.c,v 1.6 2003/05/06 07:33:43 kate Exp $" [static]

Definition at line 10 of file intExp.c.

struct kxTok* tok [static]

Definition at line 12 of file intExp.c.

Referenced by addSub(), atom(), doubleExp(), keyExpParse(), kxTokenizeFancy(), kxTokNew(), mulDiv(), number(), parseAndExp(), parseOrExp(), and uMinus().

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