Scala Positional类代码示例

//设置package包名称以及导入依赖的类
package com.phasmid.concordance

import scala.util.parsing.combinator._
import scala.util.parsing.input.Positional
import scala.io.Source
import scala.collection.immutable.Map


class ConcordanceParser extends RegexParsers {
  val rWord = """[\w’]+[,;\.\-\?\!\—]?""".r
  def word: Parser[PositionalString] = positioned(regex(rWord) ^^ {w => PositionalString(w)})
  def sentence: Parser[Seq[PositionalString]] = rep(word)
}

case class PositionalString(s: String) extends Positional

object ConcordanceParser {
 
  def main(args: Array[String]): Unit = {
    val docs = for (f <- args) yield Source.fromFile(f).mkString
    val concordance = for (i <- 0 to docs.length-1) yield (args(i),parseDoc(docs(i)))
    println(concordance)
    // an alternative way of looking at the data (gives doc, page, line and char numbers with each string)
    val q = for {(d,xxxx) <- concordance; (p,xxx) <- xxxx; (l,xx) <- xxx; (_,c,x) <- xx} yield (d, p,l,c,x)
    println(q)
    // yet another way to look at the data
    val concordanceMap = concordance.toMap
    println(concordanceMap)
  }
  
  def parseDoc(content: String) = {
    val pages = for (p <- content.split("/p")) yield p
    for (i <- 0 to pages.length-1) yield (i+1,parsePage(pages(i)))
  }

  def parsePage(content: String) = {
    val lines = for (l <- content.split("\n")) yield l
    for (i <- 0 to lines.length-1) yield (i+1,parseLine(lines(i)))
  }

  def parseLine(line: String): Seq[(Int,Int,String)] = {
    def tidy(s: String) = s.replaceAll("""[,;\.\-\?\!\—]""", "")
    val p = new ConcordanceParser
    val r = p.parseAll(p.sentence,line) match {
      case p.Success(ws,_) => ws
      case p.Failure(e,_) => println(e); List()
      case _ => println("PositionalParser: logic error"); List()
    }
    r map {case p @ PositionalString(s) => (p.pos.line,p.pos.column,tidy(s).toLowerCase)}
  }
} 

//设置package包名称以及导入依赖的类
package inox
package parsing

import scala.util.parsing.input.Positional

 
trait IR {

  type Identifier  // Identifier of the language.
  type Type        // Types.
  type Operator    // Primitive operators.
  type Value       // Literal values.
  type Field       // Fields.
  type Quantifier  // Quantifiers.

  abstract class Expression(pre: String) extends Positional with Product {
    override def productPrefix = pos + "@" + pre
  }
  case class Variable(identifier: Identifier) extends Expression("Variable")
  case class Application(callee: Expression, args: Seq[Expression]) extends Expression("Application")
  case class Abstraction(quantifier: Quantifier, bindings: Seq[(Identifier, Option[Type])], body: Expression) extends Expression("Abstraction")
  case class Operation(operator: Operator, args: Seq[Expression]) extends Expression("Operation")
  case class Selection(structure: Expression, field: Field) extends Expression("Selection")
  case class Literal(value: Value) extends Expression("Literal")
  case class TypeApplication(callee: Expression, args: Seq[Type]) extends Expression("TypeApplication")
  case class Let(bindings: Seq[(Identifier, Option[Type], Expression)], body: Expression) extends Expression("Let")
} 

//设置package包名称以及导入依赖的类
package co.language.parser

import scala.util.parsing.input.Positional

sealed trait WorkflowAST extends Positional
case class AndThen(step1: WorkflowAST, step2: WorkflowAST) extends WorkflowAST
case class ReadInput(inputs: Seq[String]) extends WorkflowAST
case class CallService(serviceName: String) extends WorkflowAST
case class Choice(alternatives: Seq[ConditionThen]) extends WorkflowAST
case object Exit extends WorkflowAST

sealed trait ConditionThen extends Positional { def thenBlock: WorkflowAST }
case class IfThen(predicate: Condition, thenBlock: WorkflowAST) extends ConditionThen
case class OtherwiseThen(thenBlock: WorkflowAST) extends ConditionThen

sealed trait Condition extends Positional
case class Equals(factName: String, factValue: String) extends Condition

// BEGIN LANGUAGE DEFINITION
// case class Declarations(variables: Seq[WorkflowAST]) extends WorkflowAST

sealed trait Attribute extends Positional
case class AttributeToValue(attrName: String, attrValue: Value) extends Attribute
case class AttributeToList(attrName: String, attrValue: Seq[Value]) extends Attribute

case class Enum(enumType: String, value: String) extends WorkflowAST

sealed trait Declaration extends WorkflowAST
case class Variable(key: String, value: Value) extends Declaration

sealed trait Value extends Positional
case class StringValue(value: String) extends Value
case class EnumValue(value: Enum) extends Value
case class ConstructorValue(value: Constructor) extends Value
case class VariableValue(key: String) extends Value

// LANGUAGE KEYWORDS (CONSTRUCTORS)
sealed trait Constructor extends WorkflowAST
case class App(attributes: Seq[Attribute]) extends Constructor
case class Page(attributes: Seq[Attribute]) extends Constructor
case class Template(attributes: Seq[Attribute]) extends Constructor
case class Component(attributes: Seq[Attribute]) extends Constructor
case class Event(attributes: Seq[Attribute]) extends Constructor
case class Listener(attributes: Seq[Attribute]) extends Constructor
case class Filter(attributes: Seq[Attribute]) extends Constructor
case class Connective(attributes: Seq[Attribute]) extends Constructor
case class Expression(attributes: Seq[Attribute]) extends Constructor
case class Arg(attributes: Seq[Attribute]) extends Constructor
case class ReferenceArg(attributes: Seq[Attribute]) extends Constructor
case class PrimitiveArg(attributes: Seq[Attribute]) extends Constructor
case class Entity(attributes: Seq[Attribute]) extends Constructor
case class Property(attributes: Seq[Attribute]) extends Constructor 

//设置package包名称以及导入依赖的类
package de.dfki.cps.specific.sysml

import scala.util.parsing.input.Positional

sealed trait TypedElementProperty extends Positional
sealed trait OperationProperty extends TypedElementProperty
sealed trait AttributeProperty extends TypedElementProperty
sealed trait ReferenceProperty extends TypedElementProperty

object TypedElementProperty {
  case class Ordered(value: Boolean) extends TypedElementProperty with AttributeProperty with OperationProperty with ReferenceProperty
  case class Unique(value: Boolean) extends TypedElementProperty with AttributeProperty with OperationProperty with ReferenceProperty
}

object OperationProperty {
  case class Query(value: Boolean) extends OperationProperty
}

object ReferenceProperty {
  case class Subsets(ref: UnprocessedConstraint) extends ReferenceProperty
}

object AttributeProperty {
  case class ReadOnly(value: Boolean) extends AttributeProperty
} 

//设置package包名称以及导入依赖的类
package de.dfki.cps.specific.sysml

import scala.util.parsing.input.Positional
import org.eclipse.uml2.uml.{ Element => UMLElement }

trait FilePositional extends Positional {
  var file: String = "nosource://"
}

trait Element extends FilePositional {
  private [sysml] var uml = Option.empty[UMLElement]

  def at(position: FilePositional): this.type = {
    this.setPos(position.pos)
    this.file = position.file
    this
  }
}

trait NamedElement extends Element {
  def name: String
} 

//设置package包名称以及导入依赖的类
package specific.sysml.parser

import de.dfki.cps.specific.ocl.parser.OclTokens

import scala.collection.SortedSet
import scala.util.parsing.combinator.token.Tokens
import scala.util.parsing.input.Positional


object SysMLTokens {
  type Token = OclTokens.Token
  type Delimiter = OclTokens.Delimiter

  case class SysmlComment(chars: String) extends Token with Positional

  sealed trait Indentation extends Token { val n: Int; val chars = "" }

  object Indentation {
    case object None extends Indentation { val n = 0 }
    case class Tabs(n: Int) extends Indentation {
      override def toString = s"$n tabs"
    }
    case class Spaces(n: Int) extends Indentation {
      override def toString = s"$n spaces"
    }
  }

  sealed trait IndentationToken extends Token { val chars = "" }
  case object SEPARATOR extends IndentationToken {
    override def toString = "end of line"
  }
  case object INDENT extends IndentationToken {
    override def toString = "start of indented block"
  }
  case object DEDENT extends IndentationToken {
    override def toString = "end of indented block"
  }
  case class UNMATCHED_DEDENT(indentation: Indentation) extends IndentationToken {
    override def toString = s"unmatched dedentation (no previous line was indented with $indentation)"
  }
  case class INCONSISTENT_INDENTATION(before: Indentation, now: Indentation) extends IndentationToken {
    override def toString = s"inconsistent indentation (started with $before and continued with $now)"
  }
  case class MIXED_INDENTATION(start: Indentation) extends IndentationToken {
    override def toString = start match {
      case Indentation.Spaces(n) => s"mixed indentation characters in one line (tab afer $n spaces)"
      case Indentation.Tabs(n) => s"mixed indentation characters in one line (space afer $n tabs)"
      case Indentation.None => sys.error("invalid indentation state")
    }
  }

  val delimiters = OclTokens.delimiters ++ SortedSet[Delimiter](
    ELIPSIS, HASH, LEFT_ARROW, TILDE
  ) (Ordering.by[Delimiter,(Int,String)](k => (k.chars.length, k.chars)).reverse)

  case object ELIPSIS extends Delimiter("..")
  case object HASH extends Delimiter("#")
  case object LEFT_ARROW extends Delimiter("<-")
  case object TILDE extends Delimiter("~")
} 

//设置package包名称以及导入依赖的类
package de.dfki.cps.specific.sysml

import scala.util.parsing.input.Positional

sealed trait Name extends Positional {
  val parts: Seq[String]
  def at(pos: Positional): this.type = {
    this.pos = pos.pos
    this
  }
}

case class SimpleName(name: String) extends Name {
  override def toString = s"?$name"
  val parts = Seq(name)
}

case class PathName(parts: Seq[String]) extends Name {
  override def toString = "?" + parts.mkString("::")
}

case class ResolvedName[T <: NamedElement](element: T) extends Name {
  val parts = Seq(element.name)
} 

//设置package包名称以及导入依赖的类
package mur

import scala.collection.mutable
import scala.util.parsing.input.{Position, Positional}

sealed trait Stmt extends Positional
case class Print(str: String) extends Stmt
case class Out(expr: Expr) extends Stmt
case class VarDef(identifier: String, expr: Expr) extends Stmt

case class Program(stmts: Seq[Stmt])

object Program {
  def positions(prog: Program, set: mutable.Set[Position]): Unit = {
    prog.stmts foreach {stmt =>
      set.add(stmt.pos)
      stmt match {
        case _: Print => ()
        case Out(expr) =>
          Expr.positions(expr, set)
        case VarDef(_, expr) =>
          Expr.positions(expr, set)
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package co.enear.parsercombinators.lexer

import scala.util.parsing.input.Positional

sealed trait WorkflowToken extends Positional

case class IDENTIFIER(str: String) extends WorkflowToken
case class LITERAL(str: String) extends WorkflowToken
case class INDENTATION(spaces: Int) extends WorkflowToken
case class EXIT() extends WorkflowToken
case class READINPUT() extends WorkflowToken
case class CALLSERVICE() extends WorkflowToken
case class SWITCH() extends WorkflowToken
case class OTHERWISE() extends WorkflowToken
case class COLON() extends WorkflowToken
case class ARROW() extends WorkflowToken
case class EQUALS() extends WorkflowToken
case class COMMA() extends WorkflowToken
case class INDENT() extends WorkflowToken
case class DEDENT() extends WorkflowToken 

//设置package包名称以及导入依赖的类
package co.enear.parsercombinators.parser

import scala.util.parsing.input.Positional

sealed trait WorkflowAST extends Positional
case class AndThen(step1: WorkflowAST, step2: WorkflowAST) extends WorkflowAST
case class ReadInput(inputs: Seq[String]) extends WorkflowAST
case class CallService(serviceName: String) extends WorkflowAST
case class Choice(alternatives: Seq[ConditionThen]) extends WorkflowAST
case object Exit extends WorkflowAST

sealed trait ConditionThen extends Positional { def thenBlock: WorkflowAST }
case class IfThen(predicate: Condition, thenBlock: WorkflowAST) extends ConditionThen
case class OtherwiseThen(thenBlock: WorkflowAST) extends ConditionThen

sealed trait Condition extends Positional
case class Equals(factName: String, factValue: String) extends Condition 

//设置package包名称以及导入依赖的类
package xyz.hyperreal.rdb

import scala.util.parsing.input.{Positional, Position}

import xyz.hyperreal.lia.FunctionMap


trait AST

trait StatementAST extends AST
case class AssignRelationStatement( variable: Ident, relation: RelationExpression ) extends StatementAST
case class CreateBaseRelationStatement( base: Ident, columns: List[ColumnDef] ) extends StatementAST
case class DropTableStatement( base: Ident ) extends StatementAST
case class InsertRelationStatement( base: Ident, relation: RelationExpression ) extends StatementAST
case class InsertTupleseqStatement( base: Ident, tupleseq: TupleseqExpression ) extends StatementAST
case class InsertTupleStatement( base: Ident, tupl: TupleExpression ) extends StatementAST
case class DeleteStatement( base: Ident, condition: LogicalExpression ) extends StatementAST
case class UpdateStatement( base: Ident, condition: LogicalExpression, updates: List[(Ident, ValueExpression)] ) extends StatementAST

trait ValueExpression extends AST with Positional
case class FloatLit( n: String ) extends ValueExpression
case class IntegerLit( n: String ) extends ValueExpression
case class StringLit( s: String ) extends ValueExpression
case class MarkLit( m: Mark ) extends ValueExpression
case class ValueVariableExpression( name: Ident ) extends ValueExpression
case class ValueColumnExpression( table: Ident, column: Ident ) extends ValueExpression
case class TupleExpression( t: List[ValueExpression] ) extends ValueExpression
case class BinaryValueExpression( left: ValueExpression, oppos: Position, operation: String, func: FunctionMap, right: ValueExpression ) extends ValueExpression
case class ApplicativeValueExpression( func: ValueExpression, args: List[ValueExpression] ) extends ValueExpression
case class UnaryValueExpression( oppos: Position, operation: String, func: FunctionMap, expr: ValueExpression ) extends ValueExpression
case class LogicalValueExpression( logical: LogicalExpression ) extends ValueExpression
case class AliasValueExpression( expr: ValueExpression, alias: Ident ) extends ValueExpression

trait TupleCollectionExpression extends StatementAST
trait RelationExpression extends TupleCollectionExpression with Positional
case class RelationVariableExpression( name: Ident ) extends RelationExpression
case class ListRelationExpression( columns: List[ColumnSpec], data: List[TupleExpression] ) extends RelationExpression
case class ProjectionRelationExpression( relation: RelationExpression, columns: List[ValueExpression] ) extends RelationExpression
case class SelectionRelationExpression( relation: RelationExpression, condition: LogicalExpression ) extends RelationExpression
case class InnerJoinRelationExpression( left: RelationExpression, condition: LogicalExpression, right: RelationExpression ) extends RelationExpression
case class GroupingRelationExpression( relation: RelationExpression, discriminator: List[ValueExpression], filter: Option[LogicalExpression], cpos: Position, columns: List[ValueExpression] ) extends RelationExpression

trait TupleseqExpression extends TupleCollectionExpression  with Positional
case class TupleseqLit( data: List[TupleExpression] ) extends TupleseqExpression
case class SortedTupleseqExpression( relation: RelationExpression, names: List[Ident], ascending: Boolean ) extends TupleseqExpression

trait LogicalExpression extends Positional
case class LiteralLogicalExpression( l: Logical ) extends LogicalExpression
case class ComparisonLogicalExpression( left: ValueExpression, comp: List[(String, FunctionMap, ValueExpression)] ) extends LogicalExpression
case class AndLogicalExpression( left: LogicalExpression, right: LogicalExpression ) extends LogicalExpression
case class OrLogicalExpression( left: LogicalExpression, right: LogicalExpression ) extends LogicalExpression
case class ExistsLogicalExpression( tuples: TupleCollectionExpression ) extends LogicalExpression

case class Ident( pos: Position, name: String )

case class ColumnSpec( name: Ident, typepos: Position, typ: Option[String] )
case class ColumnDef( name: Ident, typepos: Position, typ: Type, pkpos: Position, fkr: Ident, fkc: Ident, unmarkable: Boolean, auto: Boolean ) 

//设置package包名称以及导入依赖的类
package compiler.lexer

import scala.util.parsing.input.Positional

trait Token extends Positional

case class IDENTIFIER(name: String) extends Token
case class NUMBER(value: Int) extends Token
case class BOOLEAN_CONST(value: Boolean) extends Token
case class STRING_LITERAL(value: String) extends Token

case class SEMICOLON() extends Token
case class LEFT_PARENTHESIS() extends Token
case class RIGHT_PARENTHESIS() extends Token
case class DOT() extends Token
case class ASSIGN() extends Token
case class COMMA() extends Token
case class COLON() extends Token
case class EQUALS() extends Token
case class PLUS() extends Token
case class MINUS() extends Token
case class TIMES() extends Token
case class DIVISION() extends Token
case class MODULO() extends Token
case class LESS() extends Token
case class LESS_EQUALS() extends Token
case class GREATER() extends Token
case class GREATER_EQUALS() extends Token
case class NOT_EQUALS() extends Token
case class AND() extends Token
case class OR() extends Token 

//设置package包名称以及导入依赖的类
package compiler

import scala.util.parsing.input.Positional


case class ArrayClose() extends Positional
case class ArrayKeyword() extends Positional
case class ArrayOpen() extends Positional
case class CloseBrace() extends Positional
case class Equals() extends Positional
case class Identifier(id: String) extends Positional
case class IntegerLiteral(value: Int) extends Positional
case class JSONKey() extends Positional
case class LineEnd() extends Positional
case class OpenBrace() extends Positional
case class StringType() extends Positional