115 lines
4.5 KiB
TypeScript
115 lines
4.5 KiB
TypeScript
interface DiagnosticDetails {
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category: string;
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code: number;
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reportsUnnecessary?: {};
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isEarly?: boolean;
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}
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type InputDiagnosticMessageTable = ts.Map<DiagnosticDetails>;
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function main(): void {
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const sys = ts.sys;
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if (sys.args.length < 1) {
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sys.write("Usage:" + sys.newLine);
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sys.write("\tnode processDiagnosticMessages.js <diagnostic-json-input-file>" + sys.newLine);
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return;
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}
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function writeFile(fileName: string, contents: string) {
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const inputDirectory = ts.getDirectoryPath(inputFilePath);
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const fileOutputPath = ts.combinePaths(inputDirectory, fileName);
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sys.writeFile(fileOutputPath, contents);
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}
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const inputFilePath = sys.args[0].replace(/\\/g, "/");
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const inputStr = sys.readFile(inputFilePath);
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const diagnosticMessagesJson: { [key: string]: DiagnosticDetails } = JSON.parse(inputStr);
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const diagnosticMessages: InputDiagnosticMessageTable = ts.createMapFromTemplate(diagnosticMessagesJson);
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const outputFilesDir = ts.getDirectoryPath(inputFilePath);
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const thisFilePathRel = ts.getRelativePathToDirectoryOrUrl(outputFilesDir, sys.getExecutingFilePath(),
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sys.getCurrentDirectory(), ts.createGetCanonicalFileName(sys.useCaseSensitiveFileNames), /* isAbsolutePathAnUrl */ false);
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const infoFileOutput = buildInfoFileOutput(diagnosticMessages, "./diagnosticInformationMap.generated.ts", thisFilePathRel);
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checkForUniqueCodes(diagnosticMessages);
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writeFile("diagnosticInformationMap.generated.ts", infoFileOutput);
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const messageOutput = buildDiagnosticMessageOutput(diagnosticMessages);
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writeFile("diagnosticMessages.generated.json", messageOutput);
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}
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function checkForUniqueCodes(diagnosticTable: InputDiagnosticMessageTable) {
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const allCodes: { [key: number]: true | undefined } = [];
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diagnosticTable.forEach(({ code }) => {
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if (allCodes[code]) {
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throw new Error(`Diagnostic code ${code} appears more than once.`);
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}
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allCodes[code] = true;
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});
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}
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function buildInfoFileOutput(messageTable: InputDiagnosticMessageTable, inputFilePathRel: string, thisFilePathRel: string): string {
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let result =
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"// <auto-generated />\r\n" +
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"// generated from '" + inputFilePathRel + "' by '" + thisFilePathRel + "'\r\n" +
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"/* @internal */\r\n" +
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"namespace ts {\r\n" +
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" function diag(code: number, category: DiagnosticCategory, key: string, message: string, reportsUnnecessary?: {}): DiagnosticMessage {\r\n" +
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" return { code, category, key, message, reportsUnnecessary };\r\n" +
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" }\r\n" +
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" // tslint:disable-next-line variable-name\r\n" +
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" export const Diagnostics = {\r\n";
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messageTable.forEach(({ code, category, reportsUnnecessary }, name) => {
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const propName = convertPropertyName(name);
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const argReportsUnnecessary = reportsUnnecessary ? `, /*reportsUnnecessary*/ ${reportsUnnecessary}` : "";
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result += ` ${propName}: diag(${code}, DiagnosticCategory.${category}, "${createKey(propName, code)}", ${JSON.stringify(name)}${argReportsUnnecessary}),\r\n`;
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});
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result += " };\r\n}";
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return result;
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}
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function buildDiagnosticMessageOutput(messageTable: InputDiagnosticMessageTable): string {
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let result = "{";
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messageTable.forEach(({ code }, name) => {
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const propName = convertPropertyName(name);
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result += `\r\n "${createKey(propName, code)}" : "${name.replace(/[\"]/g, '\\"')}",`;
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});
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// Shave trailing comma, then add newline and ending brace
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result = result.slice(0, result.length - 1) + "\r\n}";
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// Assert that we generated valid JSON
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JSON.parse(result);
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return result;
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}
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function createKey(name: string, code: number): string {
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return name.slice(0, 100) + "_" + code;
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}
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function convertPropertyName(origName: string): string {
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let result = origName.split("").map(char => {
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if (char === "*") { return "_Asterisk"; }
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if (char === "/") { return "_Slash"; }
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if (char === ":") { return "_Colon"; }
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return /\w/.test(char) ? char : "_";
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}).join("");
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// get rid of all multi-underscores
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result = result.replace(/_+/g, "_");
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// remove any leading underscore, unless it is followed by a number.
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result = result.replace(/^_([^\d])/, "$1");
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// get rid of all trailing underscores.
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result = result.replace(/_$/, "");
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return result;
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}
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main(); |