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Author
l4m2

Joined: 15 Jan 2015
Posts: 674
l4m2 06 Aug 2016, 15:25
Code:
```macro xxx [x] {
common
match a =\{ b, x \{
err
\}
}
xxx 3 { nop }     ```
I want to split 3 { nop } into 3 and {nop} but it says Illegal instruction at {.
06 Aug 2016, 15:25
Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8344
Location: Kraków, Poland
Tomasz Grysztar 06 Aug 2016, 16:21
When evaluating outer macro, the "match" line becomes:
Code:
`match a ={ b, 2 { nop } {    `
and then the "{ nop }" becomes interpreted as the content of the "match" block, with additional "{" after the block.
You can get around this problem by defining a temporary symbolic variable to hold matched value:
Code:
```macro xxx [x] {
common local y
y equ x
match a =\{ b, y \{
err
\}
}
xxx 3 { nop }    ```

On a side note, you don't have to use "=" to match "{". And instead of using repeatable argument and "common" block, you can used the new syntax with "&":
Code:
```macro xxx x& {
local y
y equ x
match a \{ b, y \{
err
\}
}
xxx 3 { nop }    ```
06 Aug 2016, 16:21
l4m2

Joined: 15 Jan 2015
Posts: 674
l4m2 06 Aug 2016, 16:56
Code:
```macro xxx x& {
local y
y equ x
match a \{ b, y \{
match a, test 1
b
\}
}
xxx =test any { nop
nop
}     ```
makes an unexpected characters
06 Aug 2016, 16:56
l4m2

Joined: 15 Jan 2015
Posts: 674
l4m2 06 Aug 2016, 17:24
Code:
```macro xxx x& {
local y, q, t
y equ x
match =q a \{ b, q y \{
q equ
s equ a
t equ b
\}
match =q a \{  , q y \{
q equ
s equ a
t equ
\}
match s, test 1 \{
t
}
;This works fine
xxx =test any  {
rept 3 i:48 \{display i\}}
;But not this
xxx =test any  {rept 3 i:48 \{display i\}}    ```
06 Aug 2016, 17:24
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