Blaise

Work on potantiel next preprocessor evolution for PlantUML

Blaise must be compatible with actual PlantUML preprocessor. It should provide new capabilities.

Data type

The following basic type are supported:

• boolean
• integer (with no limit, like in Python)
• double precision floating point
• String (with full unicode support)
• JSON Data
• Tuples using < and > as delimiter
• Zero based indexing array
• Dictionnary

Boolean

A boolean can by either true or false.

!$my_var = true

Integer

You can use _ as separator for long number.

!$my_var = 3_000_000_000_000_000

Float

!$my_var = 3.14159

String

String separator could be simple quote or double quote.

!$my_var1 = 'with simple quote'
!$my_var2 = """
This is a very
long string on several
lines"""

JSON

!$my_var = {
  "firstName": "John",
  "lastName": "Smith",
  "isAlive": true,
  "age": 27,
  "address": {
    "streetAddress": "21 2nd Street",
    "city": "New York",
    "state": "NY",
    "postalCode": "10021-3100"
  },
  "phoneNumbers": [
    {
      "type": "home",
      "number": "212 555-1234"
    },
    {
      "type": "office",
      "number": "646 555-4567"
    }
  ],
  "children": [
    "Catherine",
    "Thomas",
    "Trevor"
  ],
  "spouse": null
}

Tuple

A tuple is immutable.

!$my_var = <42, "Some String", {
  "firstName": "John",
  "lastName": "Smith",
  "isAlive": true,
  "age": 27 } >

Array

Elements of the array don't have to be the same type. Arrays are mutable.

!$my_array = ["Some string", "another string", 42]

Dictionnary

In dictionnary, keys could be either String or Integer.

!$my_dict = ["key1": 3, "key2": 40, "key3": "foo"]