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@airtasker/form-schema-compiler
Advanced tools
Readme
Helps your create a security (sandbox) custom form.
npm install --save @airtasker/form-schema-compiler
This assumes that you’re using npm package manager with a module bundler like Webpack or Browserify to consume CommonJS modules.
If you don’t yet use npm or a modern module bundler, and would rather prefer a single-file UMD build that makes FormSchemaCompiler
available as a global object.
Compile an airtasker form schema to an AST (abstract structure tree).
schema
: Airtaker form schemaoptions
: { typeCompilers
}
typeCompilers
: { [TYPE
]: createCompiler()
:{[before(schema)
], [after(AST)
]}}: you can add custom components compiler. it have high priority than default components compiler.Apply an AST.
ast
: an compiled AST
options
: { variableGetter(name)
, applyComponents
}
variableGetter(name)
(function): if there is a identifier type, will use this function to get variable valueapplyComponents(componentASTs)
(function): components type handler.a const file
export const TYPES = {
Numeric: 'Numeric',
String: 'String',
Boolean: 'Boolean',
Null: 'Null',
RegExp: 'RegExp',
Identifier: 'Identifier',
BinaryExpression: 'BinaryExpression',
UnaryExpression: 'UnaryExpression',
CallExpression: 'CallExpression',
Components: 'Components',
Operator: 'Operator',
Punctuation: 'Punctuation',
Raw: 'Raw',
};
export const PRIMITIVES = [
TYPES.Numeric,
TYPES.String,
TYPES.Boolean,
TYPES.Null,
];
export const OBJECTS = [TYPES.RegExp, TYPES.Identifier, TYPES.Component];
export const EXPRESSIONS = [
TYPES.BinaryExpression,
TYPES.CallExpression,
TYPES.UnaryExpression,
];
export const OPERATORS = {
Add: '+',
Subtract: '-',
Multiply: '*',
Remainder: '%',
Divide: '/',
GreaterThan: '>',
GreaterThanOrEqualTo: '>=',
LessThan: '<',
LessThanOrEqualTo: '<=',
EqualTo: 'is',
NotEqualTo: 'isnt',
And: 'and',
Or: 'or',
Match: 'match',
Not: 'not',
};
export const ANNOTATION_TYPES = {
Expression: 'Expression',
Template: 'Template',
Component: 'Component',
Action: 'Action',
DataBinding: 'DataBinding',
};
export const ANNOTATIONS = {
[ANNOTATION_TYPES.Expression]: ['{', '}'],
[ANNOTATION_TYPES.Template]: ['#', '#'],
[ANNOTATION_TYPES.Component]: ['<', '>'],
[ANNOTATION_TYPES.Action]: ['(', ')'],
[ANNOTATION_TYPES.DataBinding]: ['[', ']'],
};
export const GLOBAL_FUNCTIONS = {
toString: 'toString'
};
Airtasker form schema using JSON schema.
key
: no annotation, compile as json
compile
{
key: "1",
key2: 1,
key3: null,
key4: true,
key5: []
}
to
{
key: {type: "String", value: "1"},
key2: {type: "Number", value: 1},
key3: {type: "Null", value: null},
key4: {type: "Boolean", value: true},
key5: {type: "Raw", value: []},
}
<key>
: component annoation
compile
{"<key>": {/*component schema*/}}
to
{"key": {/*component ast*/}}
[key]
: data binding
compile
{"[key]": "foo"}
to
{"key": { type: "identifier", name: "foo" }
#key#
: template
compile
{"#key#": "foo{"bar"}"}
to
{
"key": {
type: "BinaryExpression",
left: { type: "String", value: "foo" },
operator: "+",
right: {
type: "callExpression",
callee: { type: "identifier", name: "toString" },
arguments: [{ type: "identifier", name: "bar" }]
}
}
}
{key}
: expression
compile
{"{key}": "1 + 2"}
to
{
"key": {
type: "BinaryExpression",
left: { type: "Numeric", value: "1" },
operator: "+",
right: { type: "Numeric", value: "2" },
}
}
(key)
: action, eventValue is a special identifier that's reference the action callback value
compile
{"(click)": "doAction(eventValue)"}
to
{
"onClick": {
type: "callExpression",
callee: { type: "identifier", name: "doAction" },
arguments: [{ type: "identifier", name: "eventValue" }]
}
}
MIT
FAQs
a form schema compiler
We found that @airtasker/form-schema-compiler demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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