{
  "version": 3,
  "sources": ["../../src/quill-delta/OpIterator.ts"],
  "sourcesContent": ["/**\n * Internal dependencies\n */\nimport Op from './Op';\n\nexport default class Iterator {\n\tops: Op[];\n\tindex: number;\n\toffset: number;\n\n\tconstructor( ops: Op[] ) {\n\t\tthis.ops = ops;\n\t\tthis.index = 0;\n\t\tthis.offset = 0;\n\t}\n\n\thasNext(): boolean {\n\t\treturn this.peekLength() < Infinity;\n\t}\n\n\tnext( length?: number ): Op {\n\t\tif ( ! length ) {\n\t\t\tlength = Infinity;\n\t\t}\n\t\tconst nextOp = this.ops[ this.index ];\n\t\tif ( nextOp ) {\n\t\t\tconst offset = this.offset;\n\t\t\tconst opLength = Op.length( nextOp );\n\t\t\tif ( length >= opLength - offset ) {\n\t\t\t\tlength = opLength - offset;\n\t\t\t\tthis.index += 1;\n\t\t\t\tthis.offset = 0;\n\t\t\t} else {\n\t\t\t\tthis.offset += length;\n\t\t\t}\n\t\t\tif ( typeof nextOp.delete === 'number' ) {\n\t\t\t\treturn { delete: length };\n\t\t\t}\n\t\t\tconst retOp: Op = {};\n\t\t\tif ( nextOp.attributes ) {\n\t\t\t\tretOp.attributes = nextOp.attributes;\n\t\t\t}\n\t\t\tif ( typeof nextOp.retain === 'number' ) {\n\t\t\t\tretOp.retain = length;\n\t\t\t} else if (\n\t\t\t\ttypeof nextOp.retain === 'object' &&\n\t\t\t\tnextOp.retain !== null\n\t\t\t) {\n\t\t\t\t// offset should === 0, length should === 1\n\t\t\t\tretOp.retain = nextOp.retain;\n\t\t\t} else if ( typeof nextOp.insert === 'string' ) {\n\t\t\t\tretOp.insert = nextOp.insert.substr( offset, length );\n\t\t\t} else {\n\t\t\t\t// offset should === 0, length should === 1\n\t\t\t\tretOp.insert = nextOp.insert;\n\t\t\t}\n\t\t\treturn retOp;\n\t\t}\n\t\treturn { retain: Infinity };\n\t}\n\n\tpeek(): Op {\n\t\treturn this.ops[ this.index ];\n\t}\n\n\tpeekLength(): number {\n\t\tif ( this.ops[ this.index ] ) {\n\t\t\t// Should never return 0 if our index is being managed correctly\n\t\t\treturn Op.length( this.ops[ this.index ] ) - this.offset;\n\t\t}\n\t\treturn Infinity;\n\t}\n\n\tpeekType(): string {\n\t\tconst op = this.ops[ this.index ];\n\t\tif ( op ) {\n\t\t\tif ( typeof op.delete === 'number' ) {\n\t\t\t\treturn 'delete';\n\t\t\t} else if (\n\t\t\t\ttypeof op.retain === 'number' ||\n\t\t\t\t( typeof op.retain === 'object' && op.retain !== null )\n\t\t\t) {\n\t\t\t\treturn 'retain';\n\t\t\t}\n\t\t\treturn 'insert';\n\t\t}\n\t\treturn 'retain';\n\t}\n\n\trest(): Op[] {\n\t\tif ( ! this.hasNext() ) {\n\t\t\treturn [];\n\t\t} else if ( this.offset === 0 ) {\n\t\t\treturn this.ops.slice( this.index );\n\t\t}\n\t\tconst offset = this.offset;\n\t\tconst index = this.index;\n\t\tconst next = this.next();\n\t\tconst rest = this.ops.slice( this.index );\n\t\tthis.offset = offset;\n\t\tthis.index = index;\n\t\treturn [ next ].concat( rest );\n\t}\n}\n"],
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