Beginner question

[Cr0a3]

Hello dear pest team,
I am currently developing a parser with your libary.
I have this grammar.pest file:

patterns = { SOI ~ (pattern)* ~ EOI }

pattern = { "def Pat<" ~ mnemonic ~ inputs ~ optional_output ~ ">" ~ block }
mnemonic = @{ ASCII_ALPHANUMERIC+ }

inputs = { (","? ~ input )* }
optional_output = { "->" ~ input }
input = @{ "gr" | "imm" | "mem" }

block = { "{" ~ (!"}" ~ asm_instruction | rust_instruction)* ~ "}" }

asm_instruction = { "asm" ~ "->" ~ (ASCII_ALPHANUMERIC+ | node_var | "," | "[" | "+" | "]")* ~ NEWLINE }
rust_instruction = { ANY+ ~ NEWLINE }
node_var = @{ "$" ~ ("out" | "1" | "2") }

WHITESPACE = _{ " " | "\t" | "\n" | "\t" | "\r" }

which should be able to parse my dsl:

def Pat<Add gr, gr -> gr> {
    if $out == $2 {
        asm -> add $out, $1
    else if $out == $1 {
        asm -> add $out, $2 end
    } else {
        asm -> lea $out, [$1 + $2]
    }
}

def Pat<Add gr, imm -> gr> {
    asm -> mov $out, $2
    asm -> add $out, $1
}

The entire rust code etc. is working and set up.
The parser is supposed to parse my code like this:

• def Pat< indicates the start

• then comes the node name

• inputs and outputs

• > {
  This works really well but
  Now comes the error part:

• Look if line starts with asm -> parse a-zA-z0-9$[+] till the new line and use asm_instruction for that

• Else parse every character till the new line and use rust_instruction for that.
  But this system does not work

Any help is appreciated
Best
Cr0a3