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- const test = require('tape')
- const helpers = require('./helpers')
-
- const AST = require('../src/ast/index')
- const tt = require('../src/tokenTypes')
-
- test('parses token stream into a tree', t => {
- t.plan(1)
- const tree = helpers.parse(`
- (div :class "foobar"
- (p :class (cond #t "primary" "secondary")))
- `)
-
- t.deepEqual(tree, [
- new AST.Application({
- function: new AST.Identifier({ name: 'div' }),
- args: [
- new AST.Attribute({
- name: 'class',
- value: new AST.String({ value: 'foobar' }),
- }),
- new AST.Application({
- function: new AST.Identifier({ name: 'p' }),
- args: [
- new AST.Attribute({
- name: 'class',
- value: new AST.Application({
- function: new AST.Identifier({ name: 'cond' }),
- args: [
- new AST.Boolean({ value: true }),
- new AST.String({ value: 'primary' }),
- new AST.String({ value: 'secondary' }),
- ],
- }),
- }),
- ],
- }),
- ],
- }),
- ])
- })
-
- test('allow empty strings', t => {
- t.plan(1)
- const tree = helpers.parse('(p "")')
-
- t.deepEqual(tree, [
- new AST.Application({
- function: new AST.Identifier({ name: 'p' }),
- args: [new AST.String({ value: '' })],
- }),
- ])
- })
-
- test('parse lambdas and expressions in function position', t => {
- t.plan(1)
- const tree = helpers.parse('((lambda (n) (+ n 1)) 5)')
-
- t.deepEqual(tree, [
- new AST.Application({
- function: new AST.Lambda({
- parameters: [new AST.Identifier({ name: 'n' })],
- body: new AST.Application({
- function: new AST.Identifier({ name: '+' }),
- args: [
- new AST.Identifier({ name: 'n' }),
- new AST.Number({ value: 1 }),
- ],
- }),
- }),
- args: [new AST.Number({ value: 5 })],
- }),
- ])
- })
-
- test('parse conditionals', t => {
- t.plan(1)
- const tree = helpers.parse('(if #t (do this) (do that))')
-
- t.deepEqual(tree, [
- new AST.Conditional({
- condition: new AST.Boolean({ value: true }),
- ifCase: new AST.Application({
- function: new AST.Identifier({ name: 'do' }),
- args: [
- new AST.Identifier({ name: 'this' })
- ]
- }),
- elseCase: new AST.Application({
- function: new AST.Identifier({ name: 'do' }),
- args: [
- new AST.Identifier({ name: 'that' })
- ]
- }),
- })
- ])
- })
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