# tinyscript - A small, C-like scripting language
__tinyscript__ is considered to ba a superset of the scripting language
defined in [BehviorTree.CPP](https://www.behaviortree.dev/docs/guides/scripting).
## Data types
| Boolean | true/false |
| String | 'hello world' |
| Enum | RED, GREEN, BLUE |
| Numbers: | |
| Integer | 42 |
| Hexadecimal | 0x01 |
| Float | 3.14 |
Note: under the hood an Enum is always interpreted as its integer value.
### Boolean Values
Boolean values can be one of `true` or `false`.
Setting booleans:
```no-test
val_a = true
val_b := !false
```
The logical `!` works with boolean literals.
`!false` is the equivalent of `true`.
`val_a` and `val_b` above are equivalent.
### Strings
Strings are enclosed by '...'.
### Enums
Enums must be registered to the Runtime before they can be used.
### Numbers
#### Negative numbers
| ~ | Negate |
## Statements
Examples:
```no-test
print 42
print 42;
42; print 42; variable:= 42; (13 + 12)
```
Multiple statements in a single script are separated by a __semicolon__.
The last statements may or may not end with a semicolon.
## Assignment operators
Examples:
```no-test
var_a := 42
var_b = 3.14
message = 'hello world'
```
- The first line assigns the number 42 to the variable __var_a__.
- The second line assigns the number 3.14 to the variable __var_b__.
- The third line assigns the string "hello world" to the variable __message__.
## Arithmetic operators and parenthesis
Examples:
```no-test
var_a := 7
var_b := 5
var_b *= 2
var_c := (var_a * 3) + var_b
```
The resulting values of `var_a` is 10 and `var_c` is 31.
The following operators are supported:
| + | += | Add |
| - | -= | Subtract |
| * | *= | Multiply |
| / | /= | Divide |
These operators can be used only on Number data types, only the addition acan also be used on Strings.
# Bitwise operators
These operators work only on integer and hexadecimal numbers.
Using them with a string or float number will cause an error.
Examples:
```no-test
value:= 0x7F
val_a:= value & 0x0F
val_b:= value | 0xF0
```
The value of `val_a` is 0x0F (or 15); `val_b` is 0xFF (or 255).
| \| | Bitwise or |
| & | Bitwise and |
| ^ | Bitwise xor |
## Logic and comparison operators
Operators which return a boolean.
Example:
```no-test
val_a := true
val_b := 5 > 3
val_c := (val_a == val_b)
val_d := (val_a && val_b) || !val_c
```
| && | Logic and |
| \|\| | Logic or |
| ! | Negation |
| == | Equality |
| != | Inequality |
| < | Less |
| <= | Less equal |
| > | Greater |
| >= | Greater equal |
## Ternary operator **if-then-else**
Example:
```no-test
val_b = (val_a > 1) ? 42 : 24
```