Parser

Turns a stream of tokens into an abstract syntax tree.

To create a parser, use the companion object’s forLexer, forFile, or forString methods.

The parser is the second main component in the language implementation. It reads a stream of tokens from the lexer. It produces an abstract syntax tree which is further processed by the other components (see overview).

The parser has one method parseN for each nonterminal symbol N in the grammar´:

parseProgram
parseStatement
parseExpression
parseName
parseInteger

Additional parseN methods are necessary for helper nonterminal symbols to implement operator precedence:

parseSummand
parseFactor

Linear Supertypes

AnyRef, Any

Instance Constructors

new Parser(lexer: Lexer)

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
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final def ##(): Int

Definition Classes
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final def ==(arg0: Any): Boolean

Definition Classes
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final def asInstanceOf[T0]: T0

Definition Classes
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def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
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Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
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def equals(arg0: Any): Boolean

Definition Classes
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def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
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Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
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def hashCode(): Int

Definition Classes
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final def isInstanceOf[T0]: Boolean

Definition Classes
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final def ne(arg0: AnyRef): Boolean

Definition Classes
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final def notify(): Unit

Definition Classes
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final def notifyAll(): Unit

Definition Classes
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def parseBody: Seq[Statement]

Parses sequence of statements in braces.
def parseExpression: Expression

Parses expressions.
def parseFactor: Expression

Parses expression that can be the argument of a “*” operator.
def parseInteger: Int

Parses literal integers.
def parseName: String

Parses names.
def parseProgram: Program

Parses programs.
def parseStatement: Statement

Parses statements.
def parseSummand: Expression

Parses expression that can be the argument of a “+” or “-” operator.
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
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def toString(): String

Definition Classes
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final def wait(): Unit

Definition Classes
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Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
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Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
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Annotations
@throws( ... )

Related Docs: object Parser | package pli

class Parser extends AnyRef

Instance Constructors

new Parser(lexer: Lexer)

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def parseBody: Seq[Statement]

def parseExpression: Expression

def parseFactor: Expression

def parseInteger: Int

def parseName: String

def parseProgram: Program

def parseStatement: Statement

def parseSummand: Expression

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped