FormatCompiler.ts
61 lines
| 1.7 KiB
| video/mp2t
|
TypeScriptLexer
cin
|
r79 | import { FormatScanner, TokeType } from "./FormatScanner"; | ||
| export class FormatCompiler { | ||||
| visitText(scanner: FormatScanner) { | ||||
| while (scanner.next()) { | ||||
| if (scanner.getTokenType() === TokeType.CurlOpen) | ||||
| this.visitCurlOpen(scanner); | ||||
| } | ||||
| } | ||||
| visitCurlOpen(scanner: FormatScanner) { | ||||
| if (scanner.next()) { | ||||
| if (scanner.getTokenType() === TokeType.CurlOpen) | ||||
| this.pushText("{"); | ||||
| else | ||||
| this.visitTemplateSubst(scanner); | ||||
| } | ||||
| } | ||||
| visitTemplateSubst(scanner: FormatScanner) { | ||||
| if (scanner.getTokenType() !== TokeType.Text) | ||||
| this.dieUnexpectedToken(scanner); | ||||
| const fieldName = scanner.getTokenValue(); | ||||
| let filedFormat: string; | ||||
| if (this.readColon(scanner)) { | ||||
| filedFormat = this.readFieldFormat(scanner); | ||||
| } else { | ||||
| if (scanner.getTokenType() !== TokeType.CurlClose) | ||||
| this.dieUnexpectedToken(scanner); | ||||
| } | ||||
| this.pushSubst(fieldName, filedFormat); | ||||
| } | ||||
| pushSubst(fieldName: string, filedFormat: string) { | ||||
| throw new Error("Method not implemented."); | ||||
| } | ||||
| readFieldFormat(scanner: FormatScanner): string { | ||||
| throw new Error("Method not implemented."); | ||||
| } | ||||
| readColon(scanner: FormatScanner) { | ||||
| if (!scanner.next()) | ||||
| this.dieUnexpectedEnd(); | ||||
| if (scanner.getTokenType() !== TokeType.Colon) | ||||
| return false; | ||||
| } | ||||
| pushText(text: string) { | ||||
| } | ||||
| dieUnexpectedToken(scanner: FormatScanner) { | ||||
| throw new Error(`Unexpected token ${scanner.getTokenValue()}`); | ||||
| } | ||||
| dieUnexpectedEnd() { | ||||
| throw new Error("Unexpected end of string"); | ||||
| } | ||||
| } | ||||