Package jflex

Class Emitter

  • public final class Emitter
extends java.lang.Object
    This class manages the actual code generation, putting the scanner together, filling in skeleton sections etc.

    Table compression, String packing etc. is also done here.

    Version:
    JFlex 1.7.0

    • Field Detail

      • JAVADOC_COMMENT_AND_MAYBE_ANNOTATIONS_PATTERN

        private static final java.util.regex.Pattern JAVADOC_COMMENT_AND_MAYBE_ANNOTATIONS_PATTERN

      • inputFile

        private java.io.File inputFile

      • out

        private java.io.PrintWriter out

      • dfa

        private DFA dfa

      • isTransition

        private boolean[] isTransition

      • numRows

        private int numRows

      • rowMap

        private int[] rowMap

      • rowKilled

        private boolean[] rowKilled

      • numCols

        private int numCols

      • colMap

        private int[] colMap

      • colKilled

        private boolean[] colKilled

      • actionTable

        private java.util.Map<Action,​java.lang.Integer> actionTable
        maps actions to their switch label

      • visibility

        private java.lang.String visibility

    • Constructor Detail

      • Emitter

        public Emitter​(java.io.File inputFile,
               LexParse parser,
               DFA dfa)
        throws java.io.IOException
        Emits the java code.
        Parameters:
        inputFile - input grammar.
        parser - a LexParse.
        dfa - a DFA.
        Throws:
        java.io.IOException - if any.

    • Method Detail

      • getBaseName

        public static java.lang.String getBaseName​(java.lang.String className)
        Computes base name of the class name. Needs to take into account generics.
        Parameters:
        className - Class name for which to construct the base name
        Returns:
        the
        See Also:
        LexScan.className

      • normalize

        public static java.io.File normalize​(java.lang.String name,
                                     java.io.File input)
        Constructs a file in Options.getDir() or in the same directory as another file. Makes a backup if the file already exists.
        Parameters:
        name - the name (without path) of the file
        input - fall back location if path = null (expected to be a file in the directory to write to)
        Returns:
        The constructed File

      • println

        private void println()

      • println

        private void println​(java.lang.String line)

      • println

        private void println​(int i)

      • print

        private void print​(java.lang.String line)

      • print

        private void print​(int i)

      • print

        private void print​(int i,
                   int tab)

      • hasGenLookAhead

        private boolean hasGenLookAhead()

      • emitLookBuffer

        private void emitLookBuffer()

      • emitScanError

        private void emitScanError()

      • emitMain

        private void emitMain()

      • emitNoMatch

        private void emitNoMatch()

      • emitNextInput

        private void emitNextInput()

      • emitHeader

        private void emitHeader()

      • emitUserCode

        private void emitUserCode()

      • emitClassName

        private void emitClassName()

      • endsWithJavadoc

        public static boolean endsWithJavadoc​(java.lang.StringBuilder usercode)
        Try to find out if user code ends with a javadoc comment, maybe followed by one or more annotations
        Parameters:
        usercode - the user code
        Returns:
        true if it ends with a javadoc comment and zero or more annotations

      • emitLexicalStates

        private void emitLexicalStates()

      • emitDynamicInit

        private void emitDynamicInit()

      • emitCharMapInitFunction

        private void emitCharMapInitFunction​(int packedCharMapPairs)

      • emitCharMapArrayUnPacked

        private void emitCharMapArrayUnPacked()

      • emitCharMapArray

        private int emitCharMapArray()
        Returns the number of elements in the packed char map array, or zero if the char map array will be not be packed.

        This will be more than intervals.length if the count for any of the values is more than 0xFFFF, since the number of char map array entries per value is ceil(count / 0xFFFF)

      • printUC

        private void printUC​(int c)
        Print number as octal/unicode escaped string character.
        Parameters:
        c - the value to print

      • emitRowMapArray

        private void emitRowMapArray()

      • emitAttributes

        private void emitAttributes()

      • emitClassCode

        private void emitClassCode()

      • emitConstructorDecl

        private void emitConstructorDecl()

      • emitConstructorDecl

        private void emitConstructorDecl​(boolean printCtorArgs)

      • emitCtorArgs

        private void emitCtorArgs()

      • emitDoEOF

        private void emitDoEOF()

      • emitLexFunctHeader

        private void emitLexFunctHeader()

      • emitGetRowMapNext

        private void emitGetRowMapNext()

      • escapify

        private java.lang.String escapify​(java.lang.String s)
        Escapes all " ' \ tabs and newlines
        Parameters:
        s - The string to escape
        Returns:
        The escaped string

      • emitActionTable

        public void emitActionTable()
        emitActionTable.

      • emitActions

        private void emitActions()

      • emitEOFVal

        private void emitEOFVal()

      • findActionStates

        private void findActionStates()

      • reduceColumns

        private void reduceColumns()

      • reduceRows

        private void reduceRows()

      • setupEOFCode

        private void setupEOFCode()
        Set up EOF code section according to scanner.eofcode

      • emit

        public void emit()
        Main Emitter method.