395 lines
7.1 KiB
PHP
395 lines
7.1 KiB
PHP
macro test_err
|
|
{ local ..not_error
|
|
cmp [error_n], 0
|
|
je ..not_error
|
|
ret
|
|
..not_error:
|
|
}
|
|
|
|
macro set_err err
|
|
{
|
|
mov [error_n], err
|
|
ret
|
|
}
|
|
|
|
; ---------------------------
|
|
|
|
proc parse
|
|
mov [exp_pos], 0
|
|
stdcall skip_spaces
|
|
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 0
|
|
je .null_exp
|
|
|
|
mov [exp_lvl], 0
|
|
mov [error_n], 0
|
|
stdcall parse_lvl0
|
|
ret
|
|
|
|
.null_exp:
|
|
mov eax, 0
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc parse_lvl0 uses ebx ecx
|
|
test_err
|
|
stdcall parse_lvl1
|
|
test_err
|
|
@@:
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 0
|
|
je .end
|
|
cmp [ebx], byte ")"
|
|
je .brk_end
|
|
inc [exp_pos]
|
|
cmp [ebx], byte "+"
|
|
jne .not_add
|
|
mov ecx, eax
|
|
stdcall parse_lvl1
|
|
test_err
|
|
add eax, ecx
|
|
jmp @b
|
|
.not_add:
|
|
cmp [ebx], byte "-"
|
|
jne .unexp_char
|
|
mov ecx, eax
|
|
stdcall parse_lvl1
|
|
test_err
|
|
sub ecx, eax
|
|
mov eax, ecx
|
|
jmp @b
|
|
.brk_end:
|
|
cmp [exp_lvl], 0
|
|
jne @f
|
|
set_err 3
|
|
@@:
|
|
dec [exp_lvl]
|
|
.end:
|
|
ret
|
|
.unexp_char:
|
|
set_err 4
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc parse_lvl1 uses ebx ecx edx
|
|
test_err
|
|
stdcall parse_lvl2
|
|
test_err
|
|
@@:
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 0
|
|
je .end
|
|
cmp [ebx], byte "*"
|
|
jne .not_mul
|
|
inc [exp_pos]
|
|
mov ecx, eax
|
|
stdcall parse_lvl2
|
|
test_err
|
|
imul ecx, eax
|
|
mov eax, ecx
|
|
jmp @b
|
|
.not_mul:
|
|
cmp [ebx], byte "/"
|
|
je .div_or_mod
|
|
cmp [ebx], byte "%"
|
|
je .div_or_mod
|
|
jmp .end
|
|
.div_or_mod:
|
|
inc [exp_pos]
|
|
mov ecx, eax
|
|
stdcall parse_lvl2
|
|
test_err
|
|
cmp eax, 0
|
|
jne .not_null
|
|
set_err 1
|
|
.not_null:
|
|
xchg ecx, eax
|
|
cdq
|
|
div ecx
|
|
cmp [ebx], byte "%"
|
|
je .mod
|
|
jmp @b
|
|
.mod:
|
|
mov eax, edx
|
|
jmp @b
|
|
.end:
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc parse_lvl2 uses ebx ecx edx
|
|
test_err
|
|
stdcall parse_lvl3
|
|
test_err
|
|
@@:
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 0
|
|
je .end
|
|
cmp [ebx], byte "^"
|
|
jne .end
|
|
inc [exp_pos]
|
|
mov ecx, eax
|
|
stdcall parse_lvl2
|
|
test_err
|
|
stdcall c_power
|
|
jmp @b
|
|
.end:
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc parse_lvl3 uses ebx ecx edx
|
|
test_err
|
|
stdcall skip_spaces
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 48
|
|
jl @f
|
|
cmp [ebx], byte 57
|
|
jg @f
|
|
stdcall parse_lvl4
|
|
jmp .end
|
|
@@:
|
|
cmp [ebx], byte 97
|
|
jl @f
|
|
cmp [ebx], byte 122
|
|
jg @f
|
|
jmp .parse_func
|
|
@@:
|
|
inc [exp_pos]
|
|
cmp [ebx], byte "("
|
|
jne @f
|
|
inc [exp_lvl]
|
|
stdcall parse_lvl0
|
|
test_err
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte ")"
|
|
je .brk_ok
|
|
set_err 2
|
|
.brk_ok:
|
|
inc [exp_pos]
|
|
jmp .end
|
|
@@:
|
|
cmp [ebx], byte "+"
|
|
jne @f
|
|
stdcall parse_lvl3
|
|
test_err
|
|
jmp .end
|
|
@@:
|
|
cmp [ebx], byte "-"
|
|
jne .unexp_char
|
|
stdcall parse_lvl3
|
|
test_err
|
|
neg eax
|
|
.end:
|
|
stdcall skip_spaces
|
|
ret
|
|
.unexp_char:
|
|
set_err 4
|
|
.parse_func:
|
|
mov ecx, 0
|
|
mov dl, 0
|
|
@@:
|
|
cmp [ebx], byte 97
|
|
jl @f
|
|
cmp [ebx], byte 122
|
|
jg @f
|
|
cmp dl, 4
|
|
je .unexp_char
|
|
shl ecx, 8
|
|
mov cl, [ebx]
|
|
inc dl
|
|
inc ebx
|
|
inc [exp_pos]
|
|
jmp @b
|
|
@@:
|
|
cmp ecx, "cni"
|
|
je @f
|
|
cmp ecx, "ced"
|
|
je @f
|
|
cmp ecx, "sba"
|
|
je @f
|
|
cmp ecx, "rqs"
|
|
je @f
|
|
jmp .unexp_char
|
|
@@:
|
|
stdcall skip_spaces
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte "("
|
|
jne .unexp_char
|
|
inc [exp_lvl]
|
|
inc [exp_pos]
|
|
stdcall parse_lvl0
|
|
test_err
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte ")"
|
|
je @f
|
|
set_err 2
|
|
@@:
|
|
inc [exp_pos]
|
|
stdcall skip_spaces
|
|
cmp ecx, "cni"
|
|
jne @f
|
|
inc eax
|
|
jmp .f_end
|
|
@@:
|
|
cmp ecx, "ced"
|
|
jne @f
|
|
dec eax
|
|
jmp .f_end
|
|
@@:
|
|
cmp ecx, "sba"
|
|
jne @f
|
|
mov ecx, eax
|
|
shr ecx, 31
|
|
cmp cl, 1
|
|
jne .f_end
|
|
not eax
|
|
inc eax
|
|
jmp .f_end
|
|
@@:
|
|
cmp ecx, "rqs"
|
|
jne @f
|
|
imul eax, eax
|
|
jmp .f_end
|
|
@@:
|
|
jmp .unexp_char
|
|
.f_end:
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc parse_lvl4 uses ebx ecx
|
|
stdcall skip_spaces
|
|
stdcall parse_lvl5
|
|
stdcall skip_spaces
|
|
@@:
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 0
|
|
je .end
|
|
cmp [ebx], byte "^"
|
|
jne .end
|
|
inc [exp_pos]
|
|
stdcall skip_spaces
|
|
mov ecx, eax
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
cmp [ebx], byte 48
|
|
jl .unexp_char
|
|
cmp [ebx], byte 57
|
|
jg .unexp_char
|
|
stdcall parse_lvl4
|
|
stdcall c_power
|
|
jmp @b
|
|
.end:
|
|
ret
|
|
.unexp_char:
|
|
set_err 4
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc parse_lvl5 uses ebx ecx
|
|
sub eax, eax
|
|
sub ecx, ecx
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
@@:
|
|
cmp [ebx], byte 0
|
|
je @f
|
|
cmp [ebx], byte 48
|
|
jl @f
|
|
cmp [ebx], byte 57
|
|
jg @f
|
|
imul eax, 10
|
|
mov cl, [ebx]
|
|
add eax, ecx
|
|
sub eax, 48
|
|
inc ebx
|
|
inc [exp_pos]
|
|
jmp @b
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc skip_spaces uses ebx
|
|
mov ebx, exp
|
|
add ebx, [exp_pos]
|
|
@@:
|
|
cmp [ebx], byte " "
|
|
jne @f
|
|
inc ebx
|
|
inc [exp_pos]
|
|
jmp @b
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc c_power uses ebx
|
|
mov ebx, eax
|
|
mov eax, 1
|
|
@@:
|
|
cmp ebx, 0
|
|
je @f
|
|
imul eax, ecx
|
|
dec ebx
|
|
jmp @b
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
; ---------------------------
|
|
|
|
proc convert_to_str uses ebx ecx edx esi edi, _num, _str
|
|
mov eax, [_num]
|
|
mov esi, [_str]
|
|
mov edi, 0
|
|
mov ecx, eax
|
|
and ecx, 1 shl 31
|
|
cmp ecx, 0
|
|
je @f
|
|
mov [esi], byte "-"
|
|
inc esi
|
|
inc edi
|
|
not eax
|
|
inc eax
|
|
@@:
|
|
mov ebx, 10
|
|
xor ecx, ecx
|
|
@@:
|
|
xor edx, edx
|
|
div ebx
|
|
push edx
|
|
inc ecx
|
|
inc edi
|
|
cmp eax, 0
|
|
jne @b
|
|
@@:
|
|
pop eax
|
|
add al, "0"
|
|
mov [esi], al
|
|
inc esi
|
|
loop @b
|
|
mov [esi], byte 0
|
|
mov eax, edi
|
|
ret
|
|
endp |