wrapBeforeConstExpr

default: "always"

Control whether to insert line break before constant expression.

Available option values:

• "never"
• "overflow"
• "multi-only"
• "always"

All the examples below assume the print width is 60.

"never"

Line wrap will never be happened before constant expression.

Though possible, using "never" is not recommended.

(module
  (global i32 i32.const 0)
  (global i32 (i32.add (i32.const 0) (i32.const 0)))
  (global i32 i32.const 0 i32.const 0 i32.add)
  (global (ref null func) ref.func $long-long-long-long-func-name))

↓

(module
  (global i32 i32.const 0)
  (global i32 (i32.add
      (i32.const 0)
      (i32.const 0)))
  (global i32 i32.const 0
    i32.const 0
    i32.add)
  (global (ref null func) ref.func $long-long-long-long-func-name))

"overflow"

Line wrap will be happened before constant expression only when previous code exceeds the print width.

(module
  (global i32 i32.const 0)
  (global i32 (i32.add (i32.const 0) (i32.const 0)))
  (global i32 i32.const 0 i32.const 0 i32.add)
  (global (ref null func) ref.func $long-long-long-long-func-name))

↓

(module
  (global i32 i32.const 0)
  (global i32 (i32.add
      (i32.const 0)
      (i32.const 0)))
  (global i32 i32.const 0
    i32.const 0
    i32.add)
  (global (ref null func)
    ref.func $long-long-long-long-func-name))

"multi-only"

Line wrap will be happened before constant expression only when there are more than one instruction. Folded instruction with children instructions is considered as multiple instructions.

(module
  (global i32 i32.const 0)
  (global i32 (i32.add (i32.const 0) (i32.const 0)))
  (global i32 i32.const 0 i32.const 0 i32.add)
  (global (ref null func) ref.func $long-long-long-long-func-name))

↓

(module
  (global i32 i32.const 0)
  (global i32
    (i32.add
      (i32.const 0)
      (i32.const 0)))
  (global i32
    i32.const 0
    i32.const 0
    i32.add)
  (global (ref null func) ref.func $long-long-long-long-func-name))

"always"

Line wrap will always be happened before constant expression.

(module
  (global i32 i32.const 0)
  (global i32 (i32.add (i32.const 0) (i32.const 0)))
  (global i32 i32.const 0 i32.const 0 i32.add)
  (global (ref null func) ref.func $long-long-long-long-func-name))

↓

(module
  (global i32
    i32.const 0)
  (global i32
    (i32.add
      (i32.const 0)
      (i32.const 0)))
  (global i32
    i32.const 0
    i32.const 0
    i32.add)
  (global (ref null func)
    ref.func $long-long-long-long-func-name))