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fridis avatar fridis commented on June 3, 2024

This requires a fundamental decision: The condition in an if is currently parsed as exprInLine, i.e., it ends at the end of the line or anything that cannot be parsed as part of the expression. (i=0) -1 can be parsed as an infix operation (i=0)-1, follwed by an empty then part.

The choice is to stick with this behavior or to switch to space-separation like actual arguments. With space separation, if (i=0) -1 else 1 would be parsed as expected, but

if a = b
  say "a equals b"

would no longer work and need to be written as either

if (a = b)
  say "a equals b"

or

if a=b
  say "a equals b"

from fuzion.

fridis avatar fridis commented on June 3, 2024

For now, the decision is to use space separation only for call arguments, not to separate the condition from the code block in an if. So to make this work as expected, you have to write

j := if (i=0) then -1 else 1
j := if (i=0) (-1) else 1
j := if (i=0) {-1} else 1
j := if i=0 then -1 else 1
j := if i=0 (-1) else 1
j := if i=0 {-1} else 1

from fuzion.

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