Class Terminals.Builder

java.lang.Object

org.jparsec.Terminals.Builder

Enclosing class:

Terminals

public final class Terminals.Builder
extends Object

Builds Terminals instance by defining the words and keywords recognized. The following example implements a calculator with logical operators:

  Terminals terms = Terminals
      .operators("<", ">", "=", ">=", "<=")
      .words(Scanners.IDENTIFIER)
      .caseInsensitiveKeywords("and", "or")
      .build();
  Parser<String> var = Terminals.identifier();
  Parser<Integer> integer = Terminals.IntegerLiteral.PARSER.map(...);
  Parser<?> and = terms.token("and");
  Parser<?> lessThan = terms.token("<");
  ...
  Parser<?> parser = grammar.from(
      terms.tokenizer().or(IntegerLiteral.TOKENIZER), Scanners.WHITSPACES.optional());

Since:

2.2

Field Summary

Fields

Modifier and Type	Field	Description
private Collection<String>	keywords
private StringCase	stringCase
private final Parser<String>	wordScanner
private Function<String,?>	wordTokenMap

Constructor Summary

Constructors

Constructor	Description
Builder(Parser<String> wordScanner)

Method Summary

Modifier and Type	Method	Description
Terminals	build()	Builds a new Terminals instance that recognizes words defined in this builder.
Terminals.Builder	caseInsensitiveKeywords(String... keywords)	Defines case insensitive keywords.
Terminals.Builder	caseInsensitiveKeywords(Collection<String> keywords)	Defines case insensitive keywords.
Terminals.Builder	keywords(String... keywords)	Defines keywords.
Terminals.Builder	keywords(Collection<String> keywords)	Defines keywords.
Terminals.Builder	tokenizeWordsWith(Function<String,?> wordMap)	Configures alternative tokenization strategy for words (except keywords).

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

wordScanner

private final Parser<String> wordScanner

keywords

private Collection<String> keywords

stringCase

private StringCase stringCase

wordTokenMap

private Function<String,?> wordTokenMap

Constructor Details

Builder

Builder(Parser<String> wordScanner)

Method Details

keywords

public Terminals.Builder keywords(String... keywords)

Defines keywords. Keywords are special words with their own grammar rules. To get the parser for a keyword, call token(keyword).

Note that if you call keywords or caseInsensitiveKeywords(String...) multiple times on the same Terminals.Builder instance, the last call overwrites previous calls.

keywords

public Terminals.Builder keywords(Collection<String> keywords)

Defines keywords. Keywords are special words with their own grammar rules. To get the parser for a keyword, call token(keyword).

Note that if you call keywords or caseInsensitiveKeywords(String...) multiple times on the same Terminals.Builder instance, the last call overwrites previous calls.

caseInsensitiveKeywords

public Terminals.Builder caseInsensitiveKeywords(String... keywords)

Defines case insensitive keywords. Keywords are special words with their own grammar rules. To get the parser for a keyword, call token(keyword).

Note that if you call keywords or caseInsensitiveKeywords(String...) multiple times on the same Terminals.Builder instance, the last call overwrites previous calls.

caseInsensitiveKeywords

public Terminals.Builder caseInsensitiveKeywords(Collection<String> keywords)

Defines case insensitive keywords. Keywords are special words with their own grammar rules. To get the parser for a keyword, call token(keyword).

Note that if you call keywords or caseInsensitiveKeywords(String...) multiple times on the same Terminals.Builder instance, the last call overwrites previous calls.

tokenizeWordsWith

public Terminals.Builder tokenizeWordsWith(Function<String,?> wordMap)

Configures alternative tokenization strategy for words (except keywords).

build

public Terminals build()

Builds a new Terminals instance that recognizes words defined in this builder.