When compiling it says "unexpected characters"

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l4m2

Joined: 15 Jan 2015
Posts: 670

l4m2 15 Apr 2016, 04:08

Code:

macro whil {
  macro whil z& \{
    whil
    local a, b, f
    a equ z
    b equ
    match x\\{y, z \\{
      a equ x
      b equ \\\{y
    \\}
    match x\\{, z \\{
      a equ x
      b equ \\\{
    \\}
    if a
      f
      whil a \\{ f \\}
    end if
    macro f b
  \}
}
whil
a equ 1
a equ 2
whil defined a
{
  display a+48
  restore a
}

When compiling it says "out of stack space".

Code:

a equ 1
while defined a
  display a+48
  restore a
end while

causes an infinite loop.
So how to deal with it?(Of course

Code:

a equ 1
rept 100 {
  if defined a
    display a+48
    restore a
  end if
}

is okay but the number is hard to decide

Last edited by l4m2 on 15 Apr 2016, 05:23; edited 2 times in total

15 Apr 2016, 04:08

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20759
Location: In your JS exploiting you and your system

revolution 15 Apr 2016, 05:03

You have too many backslashes. Use only one backslash per level of macro block.

15 Apr 2016, 05:03

l4m2

Joined: 15 Jan 2015
Posts: 670

l4m2 15 Apr 2016, 05:13

revolution wrote:

You have too many backslashes. Use only one backslash per level of macro block.

I did the modification but still out of stack space

15 Apr 2016, 05:13

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20759
Location: In your JS exploiting you and your system

revolution 15 Apr 2016, 05:17

You are also mixing preprocessor and assembly constructs.

EQU/RESTORE are consumed by the preprocessor, so the assembler WHILE/DEFINED never sees them.

15 Apr 2016, 05:17

l4m2

Joined: 15 Jan 2015
Posts: 670

l4m2 15 Apr 2016, 05:21

revolution wrote:

You are also mixing preprocessor and assembly constructs.

EQU/RESTORE are consumed by the preprocessor, so the assembler WHILE/DEFINED never sees them.

So how to do that?
p.s. What's worse, even if a is not even defined, still an stack overflow got

15 Apr 2016, 05:21

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20759
Location: In your JS exploiting you and your system

revolution 15 Apr 2016, 06:43

Read up about IRPV, which can loop through all past definitions of a symbol.

15 Apr 2016, 06:43

l4m2

Joined: 15 Jan 2015
Posts: 670

l4m2 15 Apr 2016, 07:08

revolution wrote:

Read up about IRPV, which can loop through all past definitions of a symbol.

But what if it is also possible not to go through the definitions but some other thing?

15 Apr 2016, 07:08

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20759
Location: In your JS exploiting you and your system

revolution 15 Apr 2016, 07:15

What other thing would you like to do?

What are you actually trying to do?

15 Apr 2016, 07:15

l4m2

Joined: 15 Jan 2015
Posts: 670

l4m2 15 Apr 2016, 07:18

revolution wrote:

What other thing would you like to do?

What are you actually trying to do?

So you think whil is useless, right?

15 Apr 2016, 07:18

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20759
Location: In your JS exploiting you and your system

revolution 15 Apr 2016, 08:20

I don't even know what it is expected to do. Perhaps you would like to explain what you want?

15 Apr 2016, 08:20

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