Package software.amazon.smithy.model.loader

Class ParserUtils

java.lang.Object
software.amazon.smithy.model.loader.ParserUtils
public final class ParserUtils extends Object
Utility methods that act on a SimpleParser and parse Smithy grammar productions.

  • Method Details

    • parseNumber

      public static String parseNumber(SimpleParser parser)
      Parses a Smithy number production into a string. 
      -?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?
      Parameters:
      parser - Parser to consume tokens from.
      Returns:
      Returns the parsed number lexeme.

    • parseIdentifier

      public static String parseIdentifier(SimpleParser parser)
      Expects and returns a parsed Smithy identifier production.
      Parameters:
      parser - Parser to consume tokens from.
      Returns:
      Returns the parsed identifier.

    • parseRootShapeId

      public static String parseRootShapeId(SimpleParser parser)
      Expects and returns a parsed absolute Smithy Shape ID that does not include a member.
      Parameters:
      parser - Parser to consume tokens from.
      Returns:
      Returns the parsed Shape ID as a string.

    • parseShapeId

      public static String parseShapeId(SimpleParser parser)
      Expects and returns a parsed relative or absolute Smithy Shape ID.
      Parameters:
      parser - Parser to consume tokens from.
      Returns:
      Returns the parsed Shape ID as a string.

    • consumeNamespace

      public static void consumeNamespace(SimpleParser parser)
      Expects and consumes a valid Smithy shape ID namespace.
      Parameters:
      parser - Parser to consume tokens from.

    • consumeIdentifier

      public static void consumeIdentifier(SimpleParser parser)
      Expects and skips over a Smithy identifier production. 
           identifier       = identifier_start *identifier_chars
     identifier_start = *"_" ALPHA
     identifier_chars = ALPHA / DIGIT / "_"
      Parameters:
      parser - Parser to consume tokens from.

    • isValidIdentifierCharacter

      public static boolean isValidIdentifierCharacter(char c)
      Returns true if the given character is allowed in an identifier.
      Parameters:
      c - Character to check.
      Returns:
      Returns true if the character is allowed in an identifier.

    • isIdentifierStart

      public static boolean isIdentifierStart(char c)
      Returns true if the given character is allowed to start an identifier.
      Parameters:
      c - Character to check.
      Returns:
      Returns true if the character can start an identifier.

    • isDigit

      public static boolean isDigit(char c)
      Returns true if the given value is a digit 0-9.
      Parameters:
      c - Character to check.
      Returns:
      Returns true if the character is a digit.

    • isAlphabetic

      public static boolean isAlphabetic(char c)
      Returns true if the given character is an alphabetic character A-Z, a-z. This is a stricter version of Character.isAlphabetic(int).
      Parameters:
      c - Character to check.
      Returns:
      Returns true if the character is an alphabetic character.