jspurefix
Version:
pure node js fix engine
123 lines • 6.18 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const contained_1 = require("../../dictionary/contained");
const segment_description_1 = require("../segment-description");
const structure_1 = require("../structure");
const msg_tag_1 = require("../../types/enum/msg_tag");
class AsciiSegmentParser {
constructor(definitions) {
this.definitions = definitions;
this.headerDefinition = definitions.component.get('header');
this.trailerDefinition = definitions.component.get('trailer');
}
parse(msgType, tags, last) {
const segments = [];
const tr = this.trailerDefinition;
const hd = this.headerDefinition;
const msgDefinition = this.definitions.message.get(msgType);
if (!msgDefinition) {
return null;
}
const structureStack = [];
let currentTagPosition = 0;
let peek;
function init() {
const firstTag = tags.tagPos[0].tag;
structureStack[structureStack.length] = new segment_description_1.SegmentDescription(tr.name, tags.tagPos[last].tag, tr, currentTagPosition, structureStack.length, segment_description_1.SegmentType.Component);
structureStack[structureStack.length] = new segment_description_1.SegmentDescription(msgDefinition.name, firstTag, msgDefinition, currentTagPosition, structureStack.length, segment_description_1.SegmentType.Msg);
structureStack[structureStack.length] = new segment_description_1.SegmentDescription(hd.name, firstTag, hd, currentTagPosition, structureStack.length, segment_description_1.SegmentType.Component);
}
function unwind(tag) {
while (structureStack.length > 1) {
const done = structureStack.pop();
done.end(segments.length, currentTagPosition - 1, tags.tagPos[currentTagPosition - 1].tag);
segments[segments.length] = done;
peek = structureStack[structureStack.length - 1];
if (peek.set.containedTag[tag]) {
break;
}
if (peek.type === segment_description_1.SegmentType.Msg && !tr.localTag[tag]) {
break;
}
}
}
function examine(tag) {
switch (peek.currentField.type) {
case contained_1.ContainedFieldType.Simple: {
const sf = peek.currentField;
if (sf.definition.tag === tag) {
currentTagPosition = currentTagPosition + 1;
}
break;
}
case contained_1.ContainedFieldType.Component: {
const cf = peek.currentField;
structureStack[structureStack.length] = new segment_description_1.SegmentDescription(cf.name, tag, cf.definition, currentTagPosition, structureStack.length - 1, segment_description_1.SegmentType.Component);
break;
}
case contained_1.ContainedFieldType.Group: {
const gf = peek.currentField;
const structure = new segment_description_1.SegmentDescription(gf.name, tag, gf.definition, currentTagPosition, structureStack.length - 1, segment_description_1.SegmentType.Group);
structureStack[structureStack.length] = structure;
currentTagPosition = currentTagPosition + 1;
structure.startGroup(tags.tagPos[currentTagPosition].tag);
break;
}
default:
throw new Error(`unknown tag type ${tag}`);
}
}
function groupDelimiter(tag) {
let delimiter = false;
if (tag === peek.delimiterTag) {
peek.addDelimiterPosition(currentTagPosition);
}
else if (structureStack.length > 1) {
delimiter = structureStack[structureStack.length - 2].groupAddDelimiter(tag, currentTagPosition);
}
return delimiter;
}
function gap(tag) {
const gap = new segment_description_1.SegmentDescription('.undefined', tag, peek.set, currentTagPosition, structureStack.length, segment_description_1.SegmentType.Gap);
gap.end(segments.length, currentTagPosition, tag);
segments[segments.length] = gap;
currentTagPosition++;
}
function discover() {
while (currentTagPosition <= last) {
const tag = tags.tagPos[currentTagPosition].tag;
peek = structureStack[structureStack.length - 1];
peek.setCurrentField(tag);
if (!peek.set.containedTag[tag] || groupDelimiter(tag)) {
const unknown = peek.type === segment_description_1.SegmentType.Msg && tag !== msg_tag_1.MsgTag.CheckSum;
if (unknown) {
gap(tag);
}
else if (structureStack.length > 1) {
unwind(tag);
}
continue;
}
examine(tag);
}
}
function clean() {
while (structureStack.length > 0) {
const done = structureStack.pop();
done.end(segments.length, currentTagPosition - 1, tags.tagPos[currentTagPosition - 1].tag);
segments[segments.length] = done;
}
const msg = segments[segments.length - 2];
const trl = segments[segments.length - 1];
msg.startTag = tags.tagPos[msg.startPosition].tag;
trl.startPosition = msg.endPosition + 1;
msg.endPosition = trl.endPosition;
}
init();
discover();
clean();
return new structure_1.Structure(tags, segments);
}
}
exports.AsciiSegmentParser = AsciiSegmentParser;
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