/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import * as chars from './chars';
import { stringify } from './util';
export class ParseLocation {
    constructor(file, offset, line, col) {
        this.file = file;
        this.offset = offset;
        this.line = line;
        this.col = col;
    }
    toString() {
        return this.offset != null ? `${this.file.url}@${this.line}:${this.col}` : this.file.url;
    }
    moveBy(delta) {
        const source = this.file.content;
        const len = source.length;
        let offset = this.offset;
        let line = this.line;
        let col = this.col;
        while (offset > 0 && delta < 0) {
            offset--;
            delta++;
            const ch = source.charCodeAt(offset);
            if (ch == chars.$LF) {
                line--;
                const priorLine = source.substring(0, offset - 1).lastIndexOf(String.fromCharCode(chars.$LF));
                col = priorLine > 0 ? offset - priorLine : offset;
            }
            else {
                col--;
            }
        }
        while (offset < len && delta > 0) {
            const ch = source.charCodeAt(offset);
            offset++;
            delta--;
            if (ch == chars.$LF) {
                line++;
                col = 0;
            }
            else {
                col++;
            }
        }
        return new ParseLocation(this.file, offset, line, col);
    }
    // Return the source around the location
    // Up to `maxChars` or `maxLines` on each side of the location
    getContext(maxChars, maxLines) {
        const content = this.file.content;
        let startOffset = this.offset;
        if (startOffset != null) {
            if (startOffset > content.length - 1) {
                startOffset = content.length - 1;
            }
            let endOffset = startOffset;
            let ctxChars = 0;
            let ctxLines = 0;
            while (ctxChars < maxChars && startOffset > 0) {
                startOffset--;
                ctxChars++;
                if (content[startOffset] == '\n') {
                    if (++ctxLines == maxLines) {
                        break;
                    }
                }
            }
            ctxChars = 0;
            ctxLines = 0;
            while (ctxChars < maxChars && endOffset < content.length - 1) {
                endOffset++;
                ctxChars++;
                if (content[endOffset] == '\n') {
                    if (++ctxLines == maxLines) {
                        break;
                    }
                }
            }
            return {
                before: content.substring(startOffset, this.offset),
                after: content.substring(this.offset, endOffset + 1),
            };
        }
        return null;
    }
}
export class ParseSourceFile {
    constructor(content, url) {
        this.content = content;
        this.url = url;
    }
}
export class ParseSourceSpan {
    /**
     * Create an object that holds information about spans of tokens/nodes captured during
     * lexing/parsing of text.
     *
     * @param start
     * The location of the start of the span (having skipped leading trivia).
     * Skipping leading trivia makes source-spans more "user friendly", since things like HTML
     * elements will appear to begin at the start of the opening tag, rather than at the start of any
     * leading trivia, which could include newlines.
     *
     * @param end
     * The location of the end of the span.
     *
     * @param fullStart
     * The start of the token without skipping the leading trivia.
     * This is used by tooling that splits tokens further, such as extracting Angular interpolations
     * from text tokens. Such tooling creates new source-spans relative to the original token's
     * source-span. If leading trivia characters have been skipped then the new source-spans may be
     * incorrectly offset.
     *
     * @param details
     * Additional information (such as identifier names) that should be associated with the span.
     */
    constructor(start, end, fullStart = start, details = null) {
        this.start = start;
        this.end = end;
        this.fullStart = fullStart;
        this.details = details;
    }
    toString() {
        return this.start.file.content.substring(this.start.offset, this.end.offset);
    }
}
export var ParseErrorLevel;
(function (ParseErrorLevel) {
    ParseErrorLevel[ParseErrorLevel["WARNING"] = 0] = "WARNING";
    ParseErrorLevel[ParseErrorLevel["ERROR"] = 1] = "ERROR";
})(ParseErrorLevel || (ParseErrorLevel = {}));
export class ParseError {
    constructor(span, msg, level = ParseErrorLevel.ERROR) {
        this.span = span;
        this.msg = msg;
        this.level = level;
    }
    contextualMessage() {
        const ctx = this.span.start.getContext(100, 3);
        return ctx ? `${this.msg} ("${ctx.before}[${ParseErrorLevel[this.level]} ->]${ctx.after}")` :
            this.msg;
    }
    toString() {
        const details = this.span.details ? `, ${this.span.details}` : '';
        return `${this.contextualMessage()}: ${this.span.start}${details}`;
    }
}
/**
 * Generates Source Span object for a given R3 Type for JIT mode.
 *
 * @param kind Component or Directive.
 * @param typeName name of the Component or Directive.
 * @param sourceUrl reference to Component or Directive source.
 * @returns instance of ParseSourceSpan that represent a given Component or Directive.
 */
export function r3JitTypeSourceSpan(kind, typeName, sourceUrl) {
    const sourceFileName = `in ${kind} ${typeName} in ${sourceUrl}`;
    const sourceFile = new ParseSourceFile('', sourceFileName);
    return new ParseSourceSpan(new ParseLocation(sourceFile, -1, -1, -1), new ParseLocation(sourceFile, -1, -1, -1));
}
let _anonymousTypeIndex = 0;
export function identifierName(compileIdentifier) {
    if (!compileIdentifier || !compileIdentifier.reference) {
        return null;
    }
    const ref = compileIdentifier.reference;
    if (ref['__anonymousType']) {
        return ref['__anonymousType'];
    }
    if (ref['__forward_ref__']) {
        // We do not want to try to stringify a `forwardRef()` function because that would cause the
        // inner function to be evaluated too early, defeating the whole point of the `forwardRef`.
        return '__forward_ref__';
    }
    let identifier = stringify(ref);
    if (identifier.indexOf('(') >= 0) {
        // case: anonymous functions!
        identifier = `anonymous_${_anonymousTypeIndex++}`;
        ref['__anonymousType'] = identifier;
    }
    else {
        identifier = sanitizeIdentifier(identifier);
    }
    return identifier;
}
export function sanitizeIdentifier(name) {
    return name.replace(/\W/g, '_');
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport * as chars from './chars';\nimport {stringify} from './util';\n\nexport class ParseLocation {\n  constructor(\n      public file: ParseSourceFile, public offset: number, public line: number,\n      public col: number) {}\n\n  toString(): string {\n    return this.offset != null ? `${this.file.url}@${this.line}:${this.col}` : this.file.url;\n  }\n\n  moveBy(delta: number): ParseLocation {\n    const source = this.file.content;\n    const len = source.length;\n    let offset = this.offset;\n    let line = this.line;\n    let col = this.col;\n    while (offset > 0 && delta < 0) {\n      offset--;\n      delta++;\n      const ch = source.charCodeAt(offset);\n      if (ch == chars.$LF) {\n        line--;\n        const priorLine =\n            source.substring(0, offset - 1).lastIndexOf(String.fromCharCode(chars.$LF));\n        col = priorLine > 0 ? offset - priorLine : offset;\n      } else {\n        col--;\n      }\n    }\n    while (offset < len && delta > 0) {\n      const ch = source.charCodeAt(offset);\n      offset++;\n      delta--;\n      if (ch == chars.$LF) {\n        line++;\n        col = 0;\n      } else {\n        col++;\n      }\n    }\n    return new ParseLocation(this.file, offset, line, col);\n  }\n\n  // Return the source around the location\n  // Up to `maxChars` or `maxLines` on each side of the location\n  getContext(maxChars: number, maxLines: number): {before: string, after: string}|null {\n    const content = this.file.content;\n    let startOffset = this.offset;\n\n    if (startOffset != null) {\n      if (startOffset > content.length - 1) {\n        startOffset = content.length - 1;\n      }\n      let endOffset = startOffset;\n      let ctxChars = 0;\n      let ctxLines = 0;\n\n      while (ctxChars < maxChars && startOffset > 0) {\n        startOffset--;\n        ctxChars++;\n        if (content[startOffset] == '\\n') {\n          if (++ctxLines == maxLines) {\n            break;\n          }\n        }\n      }\n\n      ctxChars = 0;\n      ctxLines = 0;\n      while (ctxChars < maxChars && endOffset < content.length - 1) {\n        endOffset++;\n        ctxChars++;\n        if (content[endOffset] == '\\n') {\n          if (++ctxLines == maxLines) {\n            break;\n          }\n        }\n      }\n\n      return {\n        before: content.substring(startOffset, this.offset),\n        after: content.substring(this.offset, endOffset + 1),\n      };\n    }\n\n    return null;\n  }\n}\n\nexport class ParseSourceFile {\n  constructor(public content: string, public url: string) {}\n}\n\nexport class ParseSourceSpan {\n  /**\n   * Create an object that holds information about spans of tokens/nodes captured during\n   * lexing/parsing of text.\n   *\n   * @param start\n   * The location of the start of the span (having skipped leading trivia).\n   * Skipping leading trivia makes source-spans more \"user friendly\", since things like HTML\n   * elements will appear to begin at the start of the opening tag, rather than at the start of any\n   * leading trivia, which could include newlines.\n   *\n   * @param end\n   * The location of the end of the span.\n   *\n   * @param fullStart\n   * The start of the token without skipping the leading trivia.\n   * This is used by tooling that splits tokens further, such as extracting Angular interpolations\n   * from text tokens. Such tooling creates new source-spans relative to the original token's\n   * source-span. If leading trivia characters have been skipped then the new source-spans may be\n   * incorrectly offset.\n   *\n   * @param details\n   * Additional information (such as identifier names) that should be associated with the span.\n   */\n  constructor(\n      public start: ParseLocation, public end: ParseLocation,\n      public fullStart: ParseLocation = start, public details: string|null = null) {}\n\n  toString(): string {\n    return this.start.file.content.substring(this.start.offset, this.end.offset);\n  }\n}\n\nexport enum ParseErrorLevel {\n  WARNING,\n  ERROR,\n}\n\nexport class ParseError {\n  constructor(\n      public span: ParseSourceSpan, public msg: string,\n      public level: ParseErrorLevel = ParseErrorLevel.ERROR) {}\n\n  contextualMessage(): string {\n    const ctx = this.span.start.getContext(100, 3);\n    return ctx ? `${this.msg} (\"${ctx.before}[${ParseErrorLevel[this.level]} ->]${ctx.after}\")` :\n                 this.msg;\n  }\n\n  toString(): string {\n    const details = this.span.details ? `, ${this.span.details}` : '';\n    return `${this.contextualMessage()}: ${this.span.start}${details}`;\n  }\n}\n\n/**\n * Generates Source Span object for a given R3 Type for JIT mode.\n *\n * @param kind Component or Directive.\n * @param typeName name of the Component or Directive.\n * @param sourceUrl reference to Component or Directive source.\n * @returns instance of ParseSourceSpan that represent a given Component or Directive.\n */\nexport function r3JitTypeSourceSpan(\n    kind: string, typeName: string, sourceUrl: string): ParseSourceSpan {\n  const sourceFileName = `in ${kind} ${typeName} in ${sourceUrl}`;\n  const sourceFile = new ParseSourceFile('', sourceFileName);\n  return new ParseSourceSpan(\n      new ParseLocation(sourceFile, -1, -1, -1), new ParseLocation(sourceFile, -1, -1, -1));\n}\n\nlet _anonymousTypeIndex = 0;\n\nexport function identifierName(compileIdentifier: CompileIdentifierMetadata|null|undefined): string|\n    null {\n  if (!compileIdentifier || !compileIdentifier.reference) {\n    return null;\n  }\n  const ref = compileIdentifier.reference;\n  if (ref['__anonymousType']) {\n    return ref['__anonymousType'];\n  }\n  if (ref['__forward_ref__']) {\n    // We do not want to try to stringify a `forwardRef()` function because that would cause the\n    // inner function to be evaluated too early, defeating the whole point of the `forwardRef`.\n    return '__forward_ref__';\n  }\n  let identifier = stringify(ref);\n  if (identifier.indexOf('(') >= 0) {\n    // case: anonymous functions!\n    identifier = `anonymous_${_anonymousTypeIndex++}`;\n    ref['__anonymousType'] = identifier;\n  } else {\n    identifier = sanitizeIdentifier(identifier);\n  }\n  return identifier;\n}\n\nexport interface CompileIdentifierMetadata {\n  reference: any;\n}\n\nexport function sanitizeIdentifier(name: string): string {\n  return name.replace(/\\W/g, '_');\n}\n"]}