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declare.js
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declare.js
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const $ = require('programmatic')
exports.serialize = function (field) {
const variables = { packet: true, step: true }, accumulators = {}, parameters = {}
let depth = 0
function declare (field) {
depth++
switch (field.type) {
case 'inline': {
const buffered = field.before.filter(inline => {
return inline.properties.filter(property => {
return /^(?:\$buffer|\$start|\$end)$/.test(property)
}).length
}).length
if (buffered != 0) {
variables.starts = true
}
if (field.before.length - buffered != 0) {
variables.stack = true
}
field.fields.map(declare)
}
break
case 'accumulator': {
for (const accumulator of field.accumulators) {
if (depth == 1) {
variables.parameters = true
accumulators[accumulator.name] = accumulator.name
if (accumulator.type == 'function') {
parameters[accumulator.name] = $(`
(`, accumulator.source, `)()
`)
} else {
parameters[accumulator.name] = accumulator.source
}
} else {
accumulators[accumulator.name] = accumulator.source
}
}
variables.accumulator = true
field.fields.map(declare)
}
break
case 'structure': {
field.fields.map(declare)
}
break
case 'lengthEncoding': {
field.body.encoding.map(declare)
}
break
case 'lengthEncoded': {
if (field.encoding) {
field.encoding.map(declare)
}
if (field.fields[0].type != 'buffer') {
variables.i = true
}
if (field.fields[0].type == 'buffer' && ! field.fields[0].concat) {
variables.I = true
}
field.fields.map(declare)
}
break
case 'terminated': {
variables.i = true
}
break
case 'switch': {
field.cases.forEach(when => {
when.fields.map(declare)
})
}
break
case 'calculation': {
variables.I = true
}
break
case 'fixed': {
variables.i = true
if (field.calculated) {
variables.I = true
}
field.fields.map(declare)
}
break
case 'conditional': {
field.serialize.conditions.forEach(condition => {
condition.fields.map(declare)
})
}
break
case 'literal': {
if (field.before.repeat > 1 || field.after.repeat > 1) {
variables.i = true
}
field.fields.map(declare)
}
break
case 'bigint':
case 'integer': {
if (field.fields != null || field.lookup != null) {
variables.register = true
}
if (field.fields) {
field.fields.map(declare)
}
}
break
case 'absent':
case 'buffer':
case 'checkpoint':
case 'terminator':
break
default: throw new Error(field.type)
}
depth--
}
declare(field)
return { variables, accumulators, parameters }
}
exports.parse = function (field) {
const variables = { packet: true, step: true }, accumulators = {}, parameters = {}
let depth = 0
function declare (field, packed) {
depth++
switch (field.type) {
case 'inline': {
const buffered = field.before.filter(inline => {
return inline.properties.filter(property => {
return /^(?:\$buffer|\$start|\$end)$/.test(property)
}).length
}).length
if (buffered != 0) {
variables.starts = true
}
if (field.before.length - buffered != 0) {
variables.stack = true
}
field.fields.map(field => declare(field, packed))
}
break
case 'accumulator': {
for (const accumulator of field.accumulators) {
if (depth == 1) {
variables.parameters = true
if (accumulators.type == 'function') {
} else {
}
accumulators[accumulator.name] = accumulator.name
if (accumulator.type == 'function') {
parameters[accumulator.name] = $(`
(`, accumulator.source, `)()
`)
} else {
parameters[accumulator.name] = accumulator.source
}
} else {
accumulators[accumulator.name] = accumulator.source
}
}
variables.accumulator = true
field.fields.map(field => declare(field, packed))
}
break
case 'structure': {
field.fields.map(field => declare(field, packed))
}
break
case 'lengthEncoded': {
variables.I = true
if (field.fields[0].type != 'buffer') {
variables.i = true
}
field.fields.map(field => declare(field, packed))
field.encoding.map(field => declare(field, packed))
}
break
case 'terminated': {
variables.i = true
if (field.fields[0].type == 'terminator') {
const element = field.fields.slice().pop().fields.slice().pop()
if (element.type == 'buffer') {
variables.register = true
} else {
field.fields.map(field => declare(field, packed))
}
} else {
field.fields.map(field => declare(field, packed))
}
}
break
case 'repeated': {
field.fields.map(field => declare(field, packed))
}
break
case 'switch': {
field.cases.forEach(when => {
when.fields.map(field => declare(field, packed))
})
}
break
case 'conditional': {
if (field.parse.sip != null) {
variables.sip = true
}
field.serialize.conditions.forEach(condition => {
condition.fields.map(field => declare(field, packed))
})
}
break
case 'calculation': {
variables.I = true
}
break
case 'fixed': {
variables.i = true
if (field.calculated) {
variables.I = true
}
field.fields.map(field => declare(field, packed))
}
break
case 'bigint':
case 'integer': {
if (field.fields != null || field.lookup != null) {
variables.register = true
}
if (packed && field.compliment) {
variables.compliment = true
}
if (field.fields != null) {
field.fields.map(field => declare(field, true))
}
}
break
case 'absent':
case 'buffer':
case 'lengthEncoding':
case 'literal':
case 'checkpoint':
case 'terminator':
break
default: throw new Error(field.type)
}
depth--
}
declare(field, false)
return { variables, accumulators, parameters }
}