{
  "version": 3,
  "sources": ["../../../src/diagrams/railroad/parser/ebnfParser.ts", "../../../src/diagrams/railroad/ebnfDiagram.ts"],
  "sourcesContent": ["import {\n  MermaidParseError,\n  createRailroadEbnfServices,\n  type RailroadEbnf,\n  type EbnfChoice,\n  type EbnfExceptionPostfix,\n  type EbnfGroup,\n  type EbnfNonTerminal,\n  type EbnfOptional,\n  type EbnfPostfix,\n  type EbnfPrimary,\n  type EbnfRepetition,\n  type EbnfRule as LangiumEbnfRule,\n  type EbnfSequence,\n  type EbnfSpecial,\n  type EbnfTerm,\n  type EbnfTerminal,\n} from '@mermaid-js/parser';\n\nimport type { ParserDefinition } from '../../../diagram-api/types.js';\nimport { log } from '../../../logger.js';\nimport { populateCommonDb } from '../../common/populateCommonDb.js';\nimport { db } from '../railroadDb.js';\nimport type { ASTNode, RailroadRule } from '../railroadTypes.js';\n\nconst langiumParser = createRailroadEbnfServices().RailroadEbnf.parser.LangiumParser;\n\nconst transformChoice = (choice: EbnfChoice): ASTNode => {\n  const alternatives = choice.alternatives.map(transformSequence);\n\n  if (alternatives.length === 1) {\n    return alternatives[0];\n  }\n\n  return {\n    type: 'choice',\n    alternatives,\n  };\n};\n\nconst transformSequence = (sequence: EbnfSequence): ASTNode => {\n  const elements = sequence.elements.map(transformTerm);\n\n  if (elements.length === 1) {\n    return elements[0];\n  }\n\n  return {\n    type: 'sequence',\n    elements,\n  };\n};\n\nconst transformPrimary = (primary: EbnfPrimary): ASTNode => {\n  switch (primary.$type) {\n    case 'EbnfTerminal':\n      return {\n        type: 'terminal',\n        value: (primary as EbnfTerminal).value,\n      };\n    case 'EbnfNonTerminal':\n      return {\n        type: 'nonterminal',\n        name: (primary as EbnfNonTerminal).name,\n      };\n    case 'EbnfSpecial':\n      return {\n        type: 'special',\n        text: (primary as EbnfSpecial).text,\n      };\n    case 'EbnfGroup':\n      return transformChoice((primary as EbnfGroup).element);\n    case 'EbnfOptional':\n      return {\n        type: 'optional',\n        element: transformChoice((primary as EbnfOptional).element),\n      };\n    case 'EbnfRepetition':\n      return {\n        type: 'repetition',\n        element: transformChoice((primary as EbnfRepetition).element),\n        min: 0,\n        max: Infinity,\n      };\n    default:\n      throw new Error(`Unsupported EBNF primary node: ${primary.$type}`);\n  }\n};\n\nconst transformPostfix = (node: ASTNode, postfix: EbnfPostfix): ASTNode => {\n  switch (postfix.$type) {\n    case 'EbnfOptionalPostfix':\n      return {\n        type: 'optional',\n        element: node,\n      };\n    case 'EbnfZeroOrMorePostfix':\n      return {\n        type: 'repetition',\n        element: node,\n        min: 0,\n        max: Infinity,\n      };\n    case 'EbnfOneOrMorePostfix':\n      return {\n        type: 'repetition',\n        element: node,\n        min: 1,\n        max: Infinity,\n      };\n    case 'EbnfExceptionPostfix':\n      return {\n        type: 'sequence',\n        elements: [\n          node,\n          { type: 'terminal', value: '-' },\n          transformPrimary((postfix as EbnfExceptionPostfix).except),\n        ],\n      };\n    default:\n      throw new Error(`Unsupported EBNF postfix node: ${postfix.$type}`);\n  }\n};\n\nconst transformTerm = (term: EbnfTerm): ASTNode => {\n  return term.postfixes.reduce((currentNode, postfix) => {\n    return transformPostfix(currentNode, postfix);\n  }, transformPrimary(term.base));\n};\n\nconst transformRule = (rule: LangiumEbnfRule): RailroadRule => {\n  return {\n    name: rule.name,\n    definition: transformChoice(rule.definition),\n  };\n};\n\nconst populateDb = (ast: RailroadEbnf): void => {\n  populateCommonDb(ast, db);\n\n  if (ast.title) {\n    db.setTitle(ast.title);\n  }\n\n  ast.rules.map((rule) => db.addRule(transformRule(rule)));\n};\n\nexport const parser: ParserDefinition = {\n  parse: (input: string): void => {\n    db.clear();\n    log.debug('[EBNF Parser] Starting Langium parse');\n\n    const result = langiumParser.parse<RailroadEbnf>(input);\n    if (result.lexerErrors.length > 0 || result.parserErrors.length > 0) {\n      throw new MermaidParseError(result);\n    }\n\n    const ast = result.value;\n    log.debug('[EBNF Parser] Parsed rules:', ast.rules.length);\n\n    populateDb(ast);\n    log.debug('[EBNF Parser] Parse complete');\n  },\n  parser: {\n    yy: db,\n  },\n};\n\nexport default parser;\n", "import type { DiagramDefinition } from '../../diagram-api/types.js';\nimport { parser } from './parser/ebnfParser.js';\nimport { db } from './railroadDb.js';\nimport { renderer } from './railroadRenderer.js';\nimport { getStyles } from './styles.js';\n\nexport const diagram: DiagramDefinition = {\n  parser,\n  db,\n  renderer,\n  styles: getStyles,\n};\n"],
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