@buggyorg/typify
v0.1.12
Published
Applies a type scheme to a weakly typed buggy graph.
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Typify
Applies a type scheme to a weakly typed buggy graph. Typify offers six rules that can be applied selectively or all at once. Uses rewrite library to iteratively search for candidates and apply the rules.
Usage
To typify the graph completely, use
g1 = Typify.TypifyAll(g, maxIterations)
where maxIterations
is optional (default: Infinity)
To apply single rules, use
Graph.flow(
Typify.TypifyConstants(),
Typify.TypifyEdge(),
Typify.typifyLambdaOutput(),
Typify.typifyLambdaOutput()
// Typify.TypifyRecursion() // not yet implemented..
)(graph)
where
TypifyConstants
deduces the type of all constants and sets the port types accordingly.TypifyEdge
typifies a edge from mixed generic/nongeneric source/targettypifyLambdaOutput
Identifies the Lambda implementation with the lambda function typeTypifyRecursion
typifies a recursion node
Generic types or type names are indicated by a lower case first character
(i.e. 'generic' and 'a' are considered generic, 'Number' and 'A' aren't).
For arrays there is a rest parameter indicated by the ...
prefix.
All types are strings or should follow this format:
var type = {
name: 'Specific'
data: [
'genOutput' // list of data types
]
}
Functions have simply a special type name and structure
var fnType = {
name: 'Function'
data: [
{
name: 'arguments',
data: ['list', 'of' 'args']
},
{
name: 'returnValues',
data: ['list', 'of', 'outputs']
}
]
}
Rest parameters can be used like this:
import * as Unify from '@buggyorg/typify/lib/unify'
const t1 = {
name: 'T1'
data: ['first', '...rest']
}
const t2 = {
name: 'T2'
data: ['Number']
}
const t3 = {
name: 'T3'
data: ['String', 'Number', 'Boolean']
}
const assign1 = Unify.UnifyTypes(t1, t2)
/*
assign1 = {
first: 'Number',
rest: []
}
*/
const assign2 = Unify.UnifyTypes(t1, t3)
/*
assign2 = {
first: 'String',
rest: ['Number', 'Boolean']
}
*/