Pretty Print

Pretty printer for HorseIR programs

Pretty printer.

Principles

We propose a couple of pretty printing modes as follows.

• Print all elements (real numbers, complex numbers and symbols)
• Print abbreviations for advanced types (nested lists, dictionary, enumeration, tables and keyed tables)
• Print customized sizes (e.g. 20 rows and 5 columns max)
• Print within current window (Optional)

Basic types

Bool

(0,1):bool

Short

(10,20):i16

Int

(1234567,2):i32

Long

(123456789012345,123):i64
(123456789012345,123)

Float

(12.3,2.5):f32

Double

(12.3,2.5)
(12.3,2.5):f64

Char

'abcd'
'abcd':char

Complex numbers

(1+2i,2,3i)
(1+2i,2,3i):complex

Symbols

(`apple,`"my name"):sym
(`apple,`"my name")

Compound types

List

Input literal:

[(1,2,3):i32, (2,0.5):f32]

Output:

[(1,2,3):i32, (2,0.5):f32]

Dictionary

Input literal:

{`key1 -> (1,2,3):i32, `key2 -> (2,0.5):f32}

Output:

{
    `key1 -> (1,2,3):i32,
    `key2 -> (2,0.5):f32
}

Enumeration

Input literal:

<`u, (`a,`b,`c):sym>

Output:

<`u, (`a,`b,`c)>

Table

Input literal:

{`col1 -> (`a,`b,`c), `col2 -> (1,2,3):i32}

Output:

col1 col2
---------
a    1   
b    2   
c    3   

Keyed table

Input literal:

{[`col1 -> (`a,`b,`c)], `col2 -> (1,2,3):i32}

Output:

col1 | col2
-----------
a    | 1   
b    | 2   
c    | 3