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hyung-hwan 2006-04-05 15:56:20 +00:00
parent 2aadae710a
commit abc5ea4502
4 changed files with 97 additions and 27 deletions
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7
ase/awk/awk.h
View File

@ -1,5 +1,5 @@
/*
* $Id: awk.h,v 1.41 2006-04-04 16:03:14 bacon Exp $
* $Id: awk.h,v 1.42 2006-04-05 15:56:20 bacon Exp $
*/
#ifndef _XP_AWK_AWK_H_
@ -63,7 +63,10 @@ enum
XP_AWK_EDUPVAR, /* duplicate variable name */
XP_AWK_EDUPNAME, /* duplicate name - function, variable, etc */
XP_AWK_EUNDEF, /* undefined identifier */
XP_AWK_ELVALUE /* l-value required */
XP_AWK_ELVALUE, /* l-value required */
/* run time error */
XP_AWK_EDIVBYZERO /* divide by zero */
};
#ifdef __cplusplus

6
ase/awk/err.c
View File

@ -1,5 +1,5 @@
/*
* $Id: err.c,v 1.3 2006-04-02 12:41:14 bacon Exp $
* $Id: err.c,v 1.4 2006-04-05 15:56:20 bacon Exp $
*/
#include <xp/awk/awk_i.h>
@ -38,7 +38,9 @@ const xp_char_t* xp_awk_geterrstr (xp_awk_t* awk)
XP_TEXT("duplicate variable name"),
XP_TEXT("duplicate name"),
XP_TEXT("undefined identifier"),
XP_TEXT("l-value required")
XP_TEXT("l-value required"),
XP_TEXT("divide by zero")
};
if (awk->errnum >= 0 && awk->errnum < xp_countof(__errstr)) {

46
ase/awk/parse.c
View File

@ -1,5 +1,5 @@
/*
* $Id: parse.c,v 1.71 2006-04-04 16:22:01 bacon Exp $
* $Id: parse.c,v 1.72 2006-04-05 15:56:20 bacon Exp $
*/
#include <xp/awk/awk_i.h>
@ -738,7 +738,7 @@ static xp_awk_nde_t* __parse_block (xp_awk_t* awk, xp_bool_t is_top)
block->next = XP_NULL;
block->body = head;
/* TODO: not only local variables but also etsted blocks,
/* TODO: not only local variables but also nested blocks,
unless it is part of other constructs such as if, can be promoted
and merged to top-level block */
@ -840,7 +840,8 @@ static xp_awk_t* __collect_locals (xp_awk_t* awk, xp_size_t nlocals)
/* check if it conflicts with other local variable names */
if (xp_awk_tab_find(&awk->parse.locals, local,
((awk->opt.parse & XP_AWK_SHADING)? nlocals: 0)) != (xp_size_t)-1) {
((awk->opt.parse & XP_AWK_SHADING)? nlocals: 0)) != (xp_size_t)-1)
{
PANIC (awk, XP_AWK_EDUPVAR);
}
@ -1103,24 +1104,34 @@ static xp_awk_nde_t* __parse_binary_expr (
if (opcode == XP_AWK_BINOP_PLUS) l += r;
else if (opcode == XP_AWK_BINOP_MINUS) l -= r;
else if (opcode == XP_AWK_BINOP_MUL) l *= r;
else if (opcode == XP_AWK_BINOP_DIV) l /= r;
else if (opcode == XP_AWK_BINOP_MOD) l %= r;
else if (opcode == XP_AWK_BINOP_DIV && r != 0) l /= r;
else if (opcode == XP_AWK_BINOP_MOD && r != 0) l %= r;
else goto skip_constant_folding;
xp_awk_clrpt (right);
((xp_awk_nde_int_t*)left)->val = l;
continue;
}
/* TODO:
else if (left->type == XP_AWK_NDE_REAL &&
right->type == XP_AWK_NDE_REAL)
{
xp_real_t l, r;
l = ((xp_awk_nde_real_t*)left)->val;
r = ((xp_awk_nde_real_t*)right)->val;
/* TODO: more operators */
if (opcode == XP_AWK_BINOP_PLUS) l += r;
else if (opcode == XP_AWK_BINOP_MINUS) l -= r;
else if (opcode == XP_AWK_BINOP_MUL) l *= r;
else if (opcode == XP_AWK_BINOP_DIV) l /= r;
else goto skip_constant_folding;
xp_awk_clrpt (right);
((xp_awk_nde_real_t*)left)->val = l;
continue;
}
else if (left->type == XP_AWK_NDE_STR &&
right->type == XP_AWK_NDE_STR)
{
// TODO: string concatenation operator....
} */
// TODO: enhance constant folding more...
skip_constant_folding:
nde = (xp_awk_nde_exp_t*)xp_malloc(xp_sizeof(xp_awk_nde_exp_t));
@ -1362,7 +1373,8 @@ static xp_awk_nde_t* __parse_increment (xp_awk_t* awk)
static xp_awk_nde_t* __parse_primary (xp_awk_t* awk)
{
if (MATCH(awk,TOKEN_IDENT)) {
if (MATCH(awk,TOKEN_IDENT))
{
xp_char_t* name_dup;
name_dup = (xp_char_t*)xp_strdup(XP_STR_BUF(&awk->token.name));
@ -1480,7 +1492,8 @@ static xp_awk_nde_t* __parse_primary (xp_awk_t* awk)
return (xp_awk_nde_t*)nde;
}
else if (MATCH(awk,TOKEN_REAL)) {
else if (MATCH(awk,TOKEN_REAL))
{
xp_awk_nde_real_t* nde;
nde = (xp_awk_nde_real_t*)
@ -1503,7 +1516,8 @@ static xp_awk_nde_t* __parse_primary (xp_awk_t* awk)
return (xp_awk_nde_t*)nde;
}
else if (MATCH(awk,TOKEN_STRING)) {
else if (MATCH(awk,TOKEN_STRING))
{
xp_awk_nde_str_t* nde;
nde = (xp_awk_nde_str_t*)xp_malloc(xp_sizeof(xp_awk_nde_str_t));
@ -2476,11 +2490,11 @@ static int __get_number (xp_awk_t* awk)
else if (c != '.')
{
/* octal number */
do
while (c >= XP_CHAR('0') && c <= XP_CHAR('7'))
{
ADD_TOKEN_CHAR (awk, c);
GET_CHAR_TO (awk, c);
} while (c >= XP_CHAR('0') && c <= XP_CHAR('7'));
}
return 0;
}

65
ase/awk/run.c
View File

@ -1,5 +1,5 @@
/*
* $Id: run.c,v 1.34 2006-04-04 06:26:56 bacon Exp $
* $Id: run.c,v 1.35 2006-04-05 15:56:20 bacon Exp $
*/
#include <xp/awk/awk_i.h>
@ -26,6 +26,9 @@
#define EXIT_FUNCTION 3
#define EXIT_GLOBAL 4
#define PANIC(awk,code) \
do { (awk)->errnum = (code); return XP_NULL; } while (0)
static int __run_block (xp_awk_t* awk, xp_awk_nde_blk_t* nde);
static int __run_statement (xp_awk_t* awk, xp_awk_nde_t* nde);
static int __run_if_statement (xp_awk_t* awk, xp_awk_nde_if_t* nde);
@ -1067,12 +1070,50 @@ static xp_awk_val_t* __eval_binop_div (
if (left->type == XP_AWK_VAL_INT &&
right->type == XP_AWK_VAL_INT)
{
xp_long_t r =
((xp_awk_val_int_t*)left)->val /
((xp_awk_val_int_t*)right)->val;
xp_long_t r;
if (((xp_awk_val_int_t*)right)->val == 0)
{
PANIC (awk, XP_AWK_EDIVBYZERO);
}
r = ((xp_awk_val_int_t*)left)->val /
((xp_awk_val_int_t*)right)->val;
res = xp_awk_makeintval (awk, r);
// TOOD: error handling
}
else if (left->type == XP_AWK_VAL_REAL &&
right->type == XP_AWK_VAL_REAL)
{
xp_real_t r;
r = ((xp_awk_val_real_t*)left)->val /
((xp_awk_val_real_t*)right)->val;
res = xp_awk_makerealval (awk, r);
// TOOD: error handling
}
else if (left->type == XP_AWK_VAL_INT &&
right->type == XP_AWK_VAL_REAL)
{
xp_real_t r;
r = ((xp_awk_val_int_t*)left)->val /
((xp_awk_val_real_t*)right)->val;
res = xp_awk_makerealval (awk, r);
}
else if (left->type == XP_AWK_VAL_REAL &&
right->type == XP_AWK_VAL_INT)
{
xp_real_t r;
r = ((xp_awk_val_real_t*)left)->val /
((xp_awk_val_int_t*)right)->val;
res = xp_awk_makerealval (awk, r);
}
else
{
// TODO: invalid operands for div
}
return res;
}
@ -1085,12 +1126,22 @@ static xp_awk_val_t* __eval_binop_mod (
if (left->type == XP_AWK_VAL_INT &&
right->type == XP_AWK_VAL_INT)
{
xp_long_t r =
((xp_awk_val_int_t*)left)->val %
((xp_awk_val_int_t*)right)->val;
xp_long_t r;
if (((xp_awk_val_int_t*)right)->val == 0)
{
PANIC (awk, XP_AWK_EDIVBYZERO);
}
r = ((xp_awk_val_int_t*)left)->val %
((xp_awk_val_int_t*)right)->val;
res = xp_awk_makeintval (awk, r);
// TOOD: error handling
}
else
{
// TODO: mod is only for integers
}
return res;
}