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1 | import { FormatScanner, TokeType } from "./FormatScanner"; | |
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2 | ||
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3 | export class FormatCompiler { | |
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4 | ||
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5 | visitText(scanner: FormatScanner) { | |
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6 | while (scanner.next()) { | |
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7 | if (scanner.getTokenType() === TokeType.CurlOpen) | |
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8 | this.visitCurlOpen(scanner); | |
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9 | } | |
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10 | } | |
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11 | ||
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12 | visitCurlOpen(scanner: FormatScanner) { | |
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13 | if (scanner.next()) { | |
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14 | if (scanner.getTokenType() === TokeType.CurlOpen) | |
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15 | this.pushText("{"); | |
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16 | else | |
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17 | this.visitTemplateSubst(scanner); | |
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18 | ||
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19 | } | |
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20 | } | |
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21 | ||
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22 | visitTemplateSubst(scanner: FormatScanner) { | |
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23 | if (scanner.getTokenType() !== TokeType.Text) | |
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24 | this.dieUnexpectedToken(scanner); | |
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25 | ||
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26 | const fieldName = scanner.getTokenValue(); | |
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27 | let filedFormat: string; | |
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28 | if (this.readColon(scanner)) { | |
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29 | filedFormat = this.readFieldFormat(scanner); | |
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30 | } else { | |
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31 | if (scanner.getTokenType() !== TokeType.CurlClose) | |
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32 | this.dieUnexpectedToken(scanner); | |
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33 | } | |
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34 | ||
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35 | this.pushSubst(fieldName, filedFormat); | |
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36 | } | |
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37 | pushSubst(fieldName: string, filedFormat: string) { | |
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38 | throw new Error("Method not implemented."); | |
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39 | } | |
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40 | readFieldFormat(scanner: FormatScanner): string { | |
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41 | throw new Error("Method not implemented."); | |
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42 | } | |
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43 | readColon(scanner: FormatScanner) { | |
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44 | if (!scanner.next()) | |
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45 | this.dieUnexpectedEnd(); | |
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46 | if (scanner.getTokenType() !== TokeType.Colon) | |
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47 | return false; | |
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48 | } | |
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49 | ||
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50 | pushText(text: string) { | |
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51 | ||
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52 | } | |
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53 | ||
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54 | dieUnexpectedToken(scanner: FormatScanner) { | |
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55 | throw new Error(`Unexpected token ${scanner.getTokenValue()}`); | |
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56 | } | |
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57 | ||
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58 | dieUnexpectedEnd() { | |
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59 | throw new Error("Unexpected end of string"); | |
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60 | } | |
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61 | } | |
| @@ -0,0 +1,48 | |||
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1 | import { argumentNotEmptyString } from "../safe"; | |
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2 | import { MapOf } from "../interfaces"; | |
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3 | ||
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4 | export const enum TokeType { | |
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5 | CurlOpen, | |
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6 | CurlClose, | |
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7 | Colon, | |
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8 | Text | |
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9 | } | |
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10 | ||
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11 | const typeMap = { | |
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12 | "{": TokeType.CurlOpen, | |
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13 | "}": TokeType.CurlClose, | |
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14 | ":": TokeType.Colon | |
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15 | } as MapOf<TokeType>; | |
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16 | ||
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17 | export class FormatScanner { | |
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18 | private _text: string; | |
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19 | private _pos: number; | |
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20 | private _tokenType: TokeType; | |
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21 | private _tokenValue: string; | |
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22 | private _rx = /[^{}:]+|(.)/g; | |
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23 | ||
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24 | constructor(text: string) { | |
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25 | argumentNotEmptyString(text, text); | |
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26 | this._text = text; | |
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27 | } | |
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28 | ||
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29 | next() { | |
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30 | if (this._rx.lastIndex >= this._text.length) | |
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31 | return false; | |
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32 | this._pos = this._rx.lastIndex; | |
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33 | ||
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34 | const match = this._rx.exec(this._text); | |
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35 | this._tokenType = typeMap[match[1]] || TokeType.Text; | |
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36 | this._tokenValue = match[0]; | |
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37 | ||
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38 | return true; | |
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39 | } | |
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40 | ||
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41 | getTokenValue() { | |
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42 | return this._tokenValue; | |
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43 | } | |
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44 | ||
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45 | getTokenType() { | |
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46 | return this._tokenType; | |
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47 | } | |
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48 | } | |
| @@ -0,0 +1,18 | |||
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1 | export class StringBuilder { | |
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2 | private _data: string[]; | |
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3 | private _newLine = "\n"; | |
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4 | ||
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5 | Write(obj: any); | |
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6 | Write(format: string, ...args: any[]) { | |
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7 | ||
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8 | } | |
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9 | ||
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10 | WriteLine(obj: any); | |
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11 | WriteLine(format: string, ...args: any[]) { | |
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12 | ||
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13 | } | |
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14 | ||
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15 | WriteValue(value: any, spec?: string) { | |
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16 | ||
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17 | } | |
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18 | } | |
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