add: unit and integration testing
This commit is contained in:
odweta
+467
@@ -0,0 +1,467 @@
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// src/vlq.ts
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var comma = ",".charCodeAt(0);
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var semicolon = ";".charCodeAt(0);
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var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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var intToChar = new Uint8Array(64);
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var charToInt = new Uint8Array(128);
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for (let i = 0; i < chars.length; i++) {
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const c = chars.charCodeAt(i);
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intToChar[i] = c;
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charToInt[c] = i;
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}
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function decodeInteger(reader) {
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let value = 0;
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let shift = 0;
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let integer = 0;
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do {
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const c = reader.next();
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integer = charToInt[c];
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value |= (integer & 31) << shift;
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shift += 5;
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} while (integer & 32);
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return value;
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}
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function decodeSign(num) {
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return num & 1 ? -2147483648 | -(num >>> 1) : num >>> 1;
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}
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function encodeInteger(builder, num) {
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do {
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let clamped = num & 31;
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num >>>= 5;
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if (num > 0) clamped |= 32;
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builder.write(intToChar[clamped]);
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} while (num > 0);
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}
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function encodeSign(num) {
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return num < 0 ? -num << 1 | 1 : num << 1;
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}
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function hasMoreVlq(reader, max) {
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if (reader.pos >= max) return false;
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return reader.peek() !== comma;
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}
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// src/strings.ts
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var bufLength = 1024 * 16;
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var td = typeof TextDecoder !== "undefined" ? /* @__PURE__ */ new TextDecoder() : typeof Buffer !== "undefined" ? {
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decode(buf) {
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const out = Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength);
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return out.toString();
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}
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} : {
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decode(buf) {
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let out = "";
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for (let i = 0; i < buf.length; i++) {
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out += String.fromCharCode(buf[i]);
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}
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return out;
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}
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};
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var StringWriter = class {
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constructor() {
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this.pos = 0;
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this.out = "";
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this.buffer = new Uint8Array(bufLength);
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}
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write(v) {
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const { buffer } = this;
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buffer[this.pos++] = v;
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if (this.pos === bufLength) {
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this.out += td.decode(buffer);
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this.pos = 0;
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}
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}
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flush() {
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const { buffer, out, pos } = this;
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return pos > 0 ? out + td.decode(buffer.subarray(0, pos)) : out;
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}
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};
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var StringReader = class {
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constructor(buffer) {
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this.pos = 0;
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this.buffer = buffer;
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}
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next() {
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return this.buffer.charCodeAt(this.pos++);
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}
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peek() {
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return this.buffer.charCodeAt(this.pos);
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}
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indexOf(char) {
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const { buffer, pos } = this;
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const idx = buffer.indexOf(char, pos);
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return idx === -1 ? buffer.length : idx;
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}
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};
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// src/scopes.ts
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var EMPTY = [];
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function decodeOriginalScopes(input) {
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const { length } = input;
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const reader = new StringReader(input);
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const scopes = [];
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const stack = [];
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let line = 0;
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for (; reader.pos < length; reader.pos++) {
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line += decodeSign(decodeInteger(reader));
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const column = decodeSign(decodeInteger(reader));
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if (!hasMoreVlq(reader, length)) {
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const last = stack.pop();
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last[2] = line;
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last[3] = column;
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continue;
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}
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const kind = decodeSign(decodeInteger(reader));
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const fields = decodeSign(decodeInteger(reader));
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const hasName = fields & 1;
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const scope = hasName ? [line, column, 0, 0, kind, decodeSign(decodeInteger(reader))] : [line, column, 0, 0, kind];
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let vars = EMPTY;
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if (hasMoreVlq(reader, length)) {
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vars = [];
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do {
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const varsIndex = decodeSign(decodeInteger(reader));
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vars.push(varsIndex);
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} while (hasMoreVlq(reader, length));
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}
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scope.vars = vars;
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scopes.push(scope);
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stack.push(scope);
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}
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return scopes;
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}
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function encodeOriginalScopes(scopes) {
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const writer = new StringWriter();
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for (let i = 0; i < scopes.length; ) {
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i = _encodeOriginalScopes(scopes, i, writer, [0]);
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}
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return writer.flush();
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}
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function _encodeOriginalScopes(scopes, index, writer, state) {
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const scope = scopes[index];
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const { 0: startLine, 1: startColumn, 2: endLine, 3: endColumn, 4: kind, vars } = scope;
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if (index > 0) writer.write(comma);
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encodeInteger(writer, encodeSign(startLine - state[0]));
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state[0] = startLine;
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encodeInteger(writer, encodeSign(startColumn));
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encodeInteger(writer, encodeSign(kind));
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const fields = scope.length === 6 ? 1 : 0;
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encodeInteger(writer, encodeSign(fields));
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if (scope.length === 6) encodeInteger(writer, encodeSign(scope[5]));
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for (const v of vars) {
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encodeInteger(writer, encodeSign(v));
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}
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for (index++; index < scopes.length; ) {
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const next = scopes[index];
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const { 0: l, 1: c } = next;
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if (l > endLine || l === endLine && c >= endColumn) {
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break;
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}
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index = _encodeOriginalScopes(scopes, index, writer, state);
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}
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writer.write(comma);
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encodeInteger(writer, encodeSign(endLine - state[0]));
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state[0] = endLine;
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encodeInteger(writer, encodeSign(endColumn));
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return index;
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}
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function decodeGeneratedRanges(input) {
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const { length } = input;
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const reader = new StringReader(input);
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const ranges = [];
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const stack = [];
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let genLine = 0;
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let definitionSourcesIndex = 0;
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let definitionScopeIndex = 0;
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let callsiteSourcesIndex = 0;
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let callsiteLine = 0;
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let callsiteColumn = 0;
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let bindingLine = 0;
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let bindingColumn = 0;
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do {
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const semi = reader.indexOf(";");
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let genColumn = 0;
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for (; reader.pos < semi; reader.pos++) {
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genColumn += decodeSign(decodeInteger(reader));
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if (!hasMoreVlq(reader, semi)) {
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const last = stack.pop();
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last[2] = genLine;
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last[3] = genColumn;
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continue;
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}
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const fields = decodeSign(decodeInteger(reader));
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const hasDefinition = fields & 1;
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const hasCallsite = fields & 2;
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const hasScope = fields & 4;
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let callsite = null;
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let bindings = EMPTY;
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let range;
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if (hasDefinition) {
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const defSourcesIndex = definitionSourcesIndex + decodeSign(decodeInteger(reader));
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definitionScopeIndex = decodeSign(decodeInteger(reader)) + (definitionSourcesIndex === defSourcesIndex ? definitionScopeIndex : 0);
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definitionSourcesIndex = defSourcesIndex;
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range = [genLine, genColumn, 0, 0, defSourcesIndex, definitionScopeIndex];
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} else {
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range = [genLine, genColumn, 0, 0];
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}
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range.isScope = !!hasScope;
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if (hasCallsite) {
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const prevCsi = callsiteSourcesIndex;
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const prevLine = callsiteLine;
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callsiteSourcesIndex += decodeSign(decodeInteger(reader));
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const sameSource = prevCsi === callsiteSourcesIndex;
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callsiteLine = (sameSource ? callsiteLine : 0) + decodeSign(decodeInteger(reader));
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callsiteColumn = (sameSource && prevLine === callsiteLine ? callsiteColumn : 0) + decodeSign(decodeInteger(reader));
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callsite = [callsiteSourcesIndex, callsiteLine, callsiteColumn];
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}
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range.callsite = callsite;
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if (hasMoreVlq(reader, semi)) {
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bindings = [];
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do {
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bindingLine = genLine;
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bindingColumn = genColumn;
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const expressionsCount = decodeSign(decodeInteger(reader));
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let expressionRanges;
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if (expressionsCount < -1) {
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expressionRanges = [[decodeSign(decodeInteger(reader))]];
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for (let i = -1; i > expressionsCount; i--) {
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const prevBl = bindingLine;
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bindingLine += decodeSign(decodeInteger(reader));
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bindingColumn = (bindingLine === prevBl ? bindingColumn : 0) + decodeSign(decodeInteger(reader));
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const expression = decodeSign(decodeInteger(reader));
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expressionRanges.push([expression, bindingLine, bindingColumn]);
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}
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} else {
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expressionRanges = [[expressionsCount]];
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}
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bindings.push(expressionRanges);
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} while (hasMoreVlq(reader, semi));
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}
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range.bindings = bindings;
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ranges.push(range);
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stack.push(range);
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}
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genLine++;
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reader.pos = semi + 1;
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} while (reader.pos < length);
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return ranges;
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}
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function encodeGeneratedRanges(ranges) {
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if (ranges.length === 0) return "";
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const writer = new StringWriter();
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for (let i = 0; i < ranges.length; ) {
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i = _encodeGeneratedRanges(ranges, i, writer, [0, 0, 0, 0, 0, 0, 0]);
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}
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return writer.flush();
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}
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function _encodeGeneratedRanges(ranges, index, writer, state) {
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const range = ranges[index];
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const {
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0: startLine,
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1: startColumn,
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2: endLine,
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3: endColumn,
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isScope,
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callsite,
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bindings
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} = range;
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if (state[0] < startLine) {
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catchupLine(writer, state[0], startLine);
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state[0] = startLine;
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state[1] = 0;
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} else if (index > 0) {
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writer.write(comma);
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}
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encodeInteger(writer, encodeSign(range[1] - state[1]));
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state[1] = range[1];
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const fields = (range.length === 6 ? 1 : 0) | (callsite ? 2 : 0) | (isScope ? 4 : 0);
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encodeInteger(writer, encodeSign(fields));
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if (range.length === 6) {
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const { 4: sourcesIndex, 5: scopesIndex } = range;
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if (sourcesIndex !== state[2]) {
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state[3] = 0;
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}
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encodeInteger(writer, encodeSign(sourcesIndex - state[2]));
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state[2] = sourcesIndex;
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encodeInteger(writer, encodeSign(scopesIndex - state[3]));
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state[3] = scopesIndex;
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}
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if (callsite) {
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const { 0: sourcesIndex, 1: callLine, 2: callColumn } = range.callsite;
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if (sourcesIndex !== state[4]) {
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state[5] = 0;
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state[6] = 0;
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} else if (callLine !== state[5]) {
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state[6] = 0;
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}
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encodeInteger(writer, encodeSign(sourcesIndex - state[4]));
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state[4] = sourcesIndex;
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encodeInteger(writer, encodeSign(callLine - state[5]));
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state[5] = callLine;
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encodeInteger(writer, encodeSign(callColumn - state[6]));
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state[6] = callColumn;
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}
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if (bindings) {
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for (const binding of bindings) {
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if (binding.length > 1) encodeInteger(writer, encodeSign(-binding.length));
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const expression = binding[0][0];
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encodeInteger(writer, encodeSign(expression));
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let bindingStartLine = startLine;
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let bindingStartColumn = startColumn;
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for (let i = 1; i < binding.length; i++) {
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const expRange = binding[i];
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encodeInteger(writer, encodeSign(expRange[1] - bindingStartLine));
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bindingStartLine = expRange[1];
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encodeInteger(writer, encodeSign(expRange[2] - bindingStartColumn));
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bindingStartColumn = expRange[2];
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encodeInteger(writer, encodeSign(expRange[0]));
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}
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}
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}
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for (index++; index < ranges.length; ) {
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const next = ranges[index];
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const { 0: l, 1: c } = next;
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if (l > endLine || l === endLine && c >= endColumn) {
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break;
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}
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index = _encodeGeneratedRanges(ranges, index, writer, state);
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}
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if (state[0] < endLine) {
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catchupLine(writer, state[0], endLine);
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state[0] = endLine;
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state[1] = 0;
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} else {
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writer.write(comma);
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}
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encodeInteger(writer, encodeSign(endColumn - state[1]));
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state[1] = endColumn;
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return index;
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}
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function catchupLine(writer, lastLine, line) {
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do {
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writer.write(semicolon);
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} while (++lastLine < line);
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}
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// src/range-mappings.ts
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function decodeRangeMappings(input) {
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const { length } = input;
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const reader = new StringReader(input);
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const rangeMappings = [];
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do {
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const semi = reader.indexOf(";");
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const indices = [];
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let index = 0;
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while (reader.pos < semi) {
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index += decodeInteger(reader);
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indices.push(index);
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}
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rangeMappings.push(indices);
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reader.pos = semi + 1;
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} while (reader.pos <= length);
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return rangeMappings;
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}
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function encodeRangeMappings(decoded) {
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if (decoded.length === 0) return "";
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const writer = new StringWriter();
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for (let i = 0; i < decoded.length; i++) {
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const indices = decoded[i];
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if (i > 0) writer.write(semicolon);
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let index = 0;
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for (let j = 0; j < indices.length; j++) {
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const offset = indices[j];
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encodeInteger(writer, offset - index);
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index = offset;
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}
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}
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return writer.flush();
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}
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// src/sourcemap-codec.ts
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function decode(mappings) {
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const { length } = mappings;
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const reader = new StringReader(mappings);
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const decoded = [];
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let genColumn = 0;
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let sourcesIndex = 0;
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let sourceLine = 0;
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let sourceColumn = 0;
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let namesIndex = 0;
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do {
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const semi = reader.indexOf(";");
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const line = [];
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let sorted = true;
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let lastCol = 0;
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genColumn = 0;
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while (reader.pos < semi) {
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let seg;
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genColumn += decodeSign(decodeInteger(reader));
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if (genColumn < lastCol) sorted = false;
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lastCol = genColumn;
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if (hasMoreVlq(reader, semi)) {
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sourcesIndex += decodeSign(decodeInteger(reader));
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sourceLine += decodeSign(decodeInteger(reader));
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sourceColumn += decodeSign(decodeInteger(reader));
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if (hasMoreVlq(reader, semi)) {
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namesIndex += decodeSign(decodeInteger(reader));
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seg = [genColumn, sourcesIndex, sourceLine, sourceColumn, namesIndex];
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} else {
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seg = [genColumn, sourcesIndex, sourceLine, sourceColumn];
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}
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} else {
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seg = [genColumn];
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}
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line.push(seg);
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reader.pos++;
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}
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if (!sorted) sort(line);
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decoded.push(line);
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reader.pos = semi + 1;
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} while (reader.pos <= length);
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return decoded;
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}
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function sort(line) {
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line.sort(sortComparator);
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}
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function sortComparator(a, b) {
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return a[0] - b[0];
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}
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function encode(decoded) {
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const writer = new StringWriter();
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let sourcesIndex = 0;
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let sourceLine = 0;
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let sourceColumn = 0;
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let namesIndex = 0;
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for (let i = 0; i < decoded.length; i++) {
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const line = decoded[i];
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if (i > 0) writer.write(semicolon);
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if (line.length === 0) continue;
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let genColumn = 0;
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for (let j = 0; j < line.length; j++) {
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const segment = line[j];
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if (j > 0) writer.write(comma);
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encodeInteger(writer, encodeSign(segment[0] - genColumn));
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genColumn = segment[0];
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if (segment.length === 1) continue;
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encodeInteger(writer, encodeSign(segment[1] - sourcesIndex));
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encodeInteger(writer, encodeSign(segment[2] - sourceLine));
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encodeInteger(writer, encodeSign(segment[3] - sourceColumn));
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sourcesIndex = segment[1];
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sourceLine = segment[2];
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sourceColumn = segment[3];
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if (segment.length === 4) continue;
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encodeInteger(writer, encodeSign(segment[4] - namesIndex));
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namesIndex = segment[4];
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}
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}
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return writer.flush();
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}
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export {
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decode,
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decodeGeneratedRanges,
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decodeOriginalScopes,
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decodeRangeMappings,
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encode,
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encodeGeneratedRanges,
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encodeOriginalScopes,
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encodeRangeMappings
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};
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//# sourceMappingURL=sourcemap-codec.mjs.map
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