@glas/kype v0.0.2

kype

Type Inference Library

TODO

x Infer type of an expression based upon other assertions x Figure out how to type multiplied values (@ >= 5) * (@ >= 10) Infer Type for Member Expression

Type comparison

{ 0 .. 10 } < { 20 .. 30 }  ->  true
{ 0 .. 10 } < { 0 .. 30 }   ->  null

Types of Runtime Errors

• divide by zero
• modulo by zero
• integer overflow
• integer underflow
• infinite loop
• infinite recursion
• out of memory
• null pointer

Indented Syntax

var x = 12 type Foo = 10 .. 20

// only meta class for now. @Meta() class Vector x: Number y: Number translate(x: Number, y: Number) => Vector(this.x + x, this.y + y)

function foo(a: Type, b: Type) => if a is Bar return 12 else for i in 0 .. 20 return 20

// struct or some shiz? @Meta() @Bar() function fooWithMeta( @Meta(12) a: Type @Meta() b: Type ) => callOutline() 12 20 30

Compiler

Folders are always lower case Files are always upper case

namespace/
    Foo.ion
        # var foo       namespace:Foo.foo
        # class Foo     namespace:Foo
        # type Bar      namespace:Foo.Bar

Phases

• Parse
• Separate each declaration
• Resolve Externals
• Compile Dependencies
• Compile Self
• Store Compiled External Details

Recompile

• Reparse changed file
• Separate each declaration
• Compare to previously cached values and skip unchanged
• Resolve externals
• Compile Dependencies
• Compile Self
• Compile Dependents
• Update Compiled External Details