Package org.mvel2.util

Class ParseTools

  • public class ParseTools
extends java.lang.Object

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static java.util.Map<java.lang.Class,​java.lang.ref.WeakReference<java.lang.reflect.Constructor[]>> CLASS_CONSTRUCTOR_CACHE  
      private static java.util.Map<java.lang.ClassLoader,​java.util.Map<java.lang.String,​java.lang.ref.WeakReference<java.lang.Class>>> CLASS_RESOLVER_CACHE  
      private static java.util.Map<java.lang.reflect.Constructor,​java.lang.ref.WeakReference<java.lang.Class[]>> CONSTRUCTOR_PARMS_CACHE  
      static java.lang.Class[] EMPTY_CLS_ARR  
      static java.lang.Object[] EMPTY_OBJ_ARR  
      private static java.util.Map<java.lang.Class,​java.lang.Integer> typeCodes  
      private static java.util.HashMap<java.lang.Class,​java.lang.Integer> typeResolveMap  

    • Constructor Summary

      Constructors 
      Constructor Description
      ParseTools()  

    • Field Detail

      • EMPTY_OBJ_ARR

        public static final java.lang.Object[] EMPTY_OBJ_ARR

      • EMPTY_CLS_ARR

        public static final java.lang.Class[] EMPTY_CLS_ARR

      • CONSTRUCTOR_PARMS_CACHE

        private static final java.util.Map<java.lang.reflect.Constructor,​java.lang.ref.WeakReference<java.lang.Class[]>> CONSTRUCTOR_PARMS_CACHE

      • CLASS_RESOLVER_CACHE

        private static final java.util.Map<java.lang.ClassLoader,​java.util.Map<java.lang.String,​java.lang.ref.WeakReference<java.lang.Class>>> CLASS_RESOLVER_CACHE

      • CLASS_CONSTRUCTOR_CACHE

        private static final java.util.Map<java.lang.Class,​java.lang.ref.WeakReference<java.lang.reflect.Constructor[]>> CLASS_CONSTRUCTOR_CACHE

      • typeResolveMap

        private static final java.util.HashMap<java.lang.Class,​java.lang.Integer> typeResolveMap

      • typeCodes

        private static final java.util.Map<java.lang.Class,​java.lang.Integer> typeCodes

    • Constructor Detail

      • ParseTools

        public ParseTools()

    • Method Detail

      • parseMethodOrConstructor

        public static java.util.List<char[]> parseMethodOrConstructor​(char[] parm)

      • parseParameterDefList

        public static java.lang.String[] parseParameterDefList​(char[] parm,
                                                       int offset,
                                                       int length)

      • parseParameterList

        public static java.util.List<char[]> parseParameterList​(char[] parm,
                                                        int offset,
                                                        int length)

      • getBestCandidate

        public static java.lang.reflect.Method getBestCandidate​(java.lang.Object[] arguments,
                                                        java.lang.String method,
                                                        java.lang.Class decl,
                                                        java.lang.reflect.Method[] methods,
                                                        boolean requireExact)

      • getBestCandidate

        public static java.lang.reflect.Method getBestCandidate​(java.lang.Class[] arguments,
                                                        java.lang.String method,
                                                        java.lang.Class decl,
                                                        java.lang.reflect.Method[] methods,
                                                        boolean requireExact)

      • getBestCandidate

        public static java.lang.reflect.Method getBestCandidate​(java.lang.Class[] arguments,
                                                        java.lang.String method,
                                                        java.lang.Class decl,
                                                        java.lang.reflect.Method[] methods,
                                                        boolean requireExact,
                                                        boolean classTarget)

      • isArgsNumberNotCompatible

        private static boolean isArgsNumberNotCompatible​(java.lang.Class[] arguments,
                                                 java.lang.Class<?>[] parmTypes,
                                                 boolean isVarArgs)

      • isMoreSpecialized

        private static boolean isMoreSpecialized​(java.lang.reflect.Method newCandidate,
                                         java.lang.reflect.Method oldCandidate)

      • isMorePreciseForBigDecimal

        private static boolean isMorePreciseForBigDecimal​(java.lang.reflect.Executable newCandidate,
                                                  java.lang.reflect.Executable oldCandidate,
                                                  java.lang.Class[] arguments)

      • comparePrecision

        private static int comparePrecision​(java.lang.Class<?> numeric1,
                                    java.lang.Class<?> numeric2)

      • getMethodScore

        private static int getMethodScore​(java.lang.Class[] arguments,
                                  boolean requireExact,
                                  java.lang.Class<?>[] parmTypes,
                                  boolean varArgs)

      • scoreInterface

        public static int scoreInterface​(java.lang.Class<?> parm,
                                 java.lang.Class<?> arg)

      • getExactMatch

        public static java.lang.reflect.Method getExactMatch​(java.lang.String name,
                                                     java.lang.Class[] args,
                                                     java.lang.Class returnType,
                                                     java.lang.Class cls)

      • getWidenedTarget

        public static java.lang.reflect.Method getWidenedTarget​(java.lang.reflect.Method method)

      • getWidenedTarget

        public static java.lang.reflect.Method getWidenedTarget​(java.lang.Class cls,
                                                        java.lang.reflect.Method method)

      • getConstructors

        private static java.lang.Class[] getConstructors​(java.lang.reflect.Constructor cns)

      • getBestConstructorCandidate

        public static java.lang.reflect.Constructor getBestConstructorCandidate​(java.lang.Object[] args,
                                                                        java.lang.Class cls,
                                                                        boolean requireExact)

      • getBestConstructorCandidate

        public static java.lang.reflect.Constructor getBestConstructorCandidate​(java.lang.Class[] arguments,
                                                                        java.lang.Class cls,
                                                                        boolean requireExact)

      • createClass

        public static java.lang.Class createClass​(java.lang.String className,
                                          ParserContext pCtx)
                                   throws java.lang.ClassNotFoundException
        Throws:
        java.lang.ClassNotFoundException

      • getConstructors

        public static java.lang.reflect.Constructor[] getConstructors​(java.lang.Class cls)

      • captureContructorAndResidual

        public static java.lang.String[] captureContructorAndResidual​(char[] cs,
                                                              int start,
                                                              int offset)

      • boxPrimitive

        public static java.lang.Class<?> boxPrimitive​(java.lang.Class cls)

      • unboxPrimitive

        public static java.lang.Class unboxPrimitive​(java.lang.Class cls)

      • containsCheck

        public static boolean containsCheck​(java.lang.Object compareTo,
                                    java.lang.Object compareTest)

      • containsCheckOnPrimitveArray

        private static boolean containsCheckOnPrimitveArray​(java.lang.Object primitiveArray,
                                                    java.lang.Object compareTest)

      • containsCheckOnBooleanArray

        private static boolean containsCheckOnBooleanArray​(boolean[] array,
                                                   java.lang.Boolean compareTest)

      • containsCheckOnIntArray

        private static boolean containsCheckOnIntArray​(int[] array,
                                               java.lang.Integer compareTest)

      • containsCheckOnLongArray

        private static boolean containsCheckOnLongArray​(long[] array,
                                                java.lang.Long compareTest)

      • containsCheckOnDoubleArray

        private static boolean containsCheckOnDoubleArray​(double[] array,
                                                  java.lang.Double compareTest)

      • containsCheckOnFloatArray

        private static boolean containsCheckOnFloatArray​(float[] array,
                                                 java.lang.Float compareTest)

      • containsCheckOnCharArray

        private static boolean containsCheckOnCharArray​(char[] array,
                                                java.lang.Character compareTest)

      • containsCheckOnShortArray

        private static boolean containsCheckOnShortArray​(short[] array,
                                                 java.lang.Short compareTest)

      • containsCheckOnByteArray

        private static boolean containsCheckOnByteArray​(byte[] array,
                                                java.lang.Byte compareTest)

      • handleEscapeSequence

        public static int handleEscapeSequence​(char[] escapeStr,
                                       int pos)
        Replace escape sequences and return trim required.
        Parameters:
        escapeStr - -
        pos - -
        Returns:
        -

      • createShortFormOperativeAssignment

        public static char[] createShortFormOperativeAssignment​(java.lang.String name,
                                                        char[] statement,
                                                        int start,
                                                        int offset,
                                                        int operation)

      • findClass

        public static java.lang.Class findClass​(VariableResolverFactory factory,
                                        java.lang.String name,
                                        ParserContext pCtx)
                                 throws java.lang.ClassNotFoundException
        Throws:
        java.lang.ClassNotFoundException

      • subsetTrimmed

        public static char[] subsetTrimmed​(char[] array,
                                   int start,
                                   int length)

      • subset

        public static char[] subset​(char[] array,
                            int start,
                            int length)

      • subset

        public static char[] subset​(char[] array,
                            int start)

      • resolveType

        public static int resolveType​(java.lang.Object o)

      • __resolveType

        public static int __resolveType​(java.lang.Class cls)

      • isPrimitiveSubtype

        private static boolean isPrimitiveSubtype​(java.lang.Class argument,
                                          java.lang.Class<?> actualParamType)

      • isNumericallyCoercible

        public static boolean isNumericallyCoercible​(java.lang.Class target,
                                             java.lang.Class parm)

      • narrowType

        public static java.lang.Object narrowType​(java.math.BigDecimal result,
                                          int returnTarget)

      • determineActualTargetMethod

        public static java.lang.reflect.Method determineActualTargetMethod​(java.lang.reflect.Method method)

      • determineActualTargetMethod

        private static java.lang.reflect.Method determineActualTargetMethod​(java.lang.Class clazz,
                                                                    java.lang.reflect.Method method)

      • captureToNextTokenJunction

        public static int captureToNextTokenJunction​(char[] expr,
                                             int cursor,
                                             int end,
                                             ParserContext pCtx)

      • nextNonBlank

        public static int nextNonBlank​(char[] expr,
                               int cursor)

      • skipWhitespace

        public static int skipWhitespace​(char[] expr,
                                 int cursor)

      • isStatementNotManuallyTerminated

        public static boolean isStatementNotManuallyTerminated​(char[] expr,
                                                       int cursor)

      • captureToEOS

        public static int captureToEOS​(char[] expr,
                               int cursor,
                               int end,
                               ParserContext pCtx)

      • trimLeft

        public static int trimLeft​(char[] expr,
                           int start,
                           int pos)
        From the specified cursor position, trim out any whitespace between the current position and the end of the last non-whitespace character.
        Parameters:
        expr - -
        start - -
        pos - - current position
        Returns:
        new position.

      • trimRight

        public static int trimRight​(char[] expr,
                            int pos)
        From the specified cursor position, trim out any whitespace between the current position and beginning of the first non-whitespace character.
        Parameters:
        expr - -
        pos - -
        Returns:
        -

      • subArray

        public static char[] subArray​(char[] expr,
                              int start,
                              int end)

      • balancedCapture

        public static int balancedCapture​(char[] chars,
                                  int start,
                                  char type)
        This is an important aspect of the core parser tools. This method is used throughout the core parser and sub-lexical parsers to capture a balanced capture between opening and terminating tokens such as: ( [ { ' "

        For example: ((foo + bar + (bar - foo)) * 20;

        If a balanced capture is performed from position 2, we get "(foo + bar + (bar - foo))" back.
        If a balanced capture is performed from position 15, we get "(bar - foo)" back.
        Etc.
        Parameters:
        chars - -
        start - -
        type - -
        Returns:
        -

      • balancedCapture

        public static int balancedCapture​(char[] chars,
                                  int start,
                                  int end,
                                  char type)

      • balancedCaptureWithLineAccounting

        public static int balancedCaptureWithLineAccounting​(char[] chars,
                                                    int start,
                                                    int end,
                                                    char type,
                                                    ParserContext pCtx)

      • handleStringEscapes

        public static java.lang.String handleStringEscapes​(char[] input)

      • captureStringLiteral

        public static int captureStringLiteral​(char type,
                                       char[] expr,
                                       int cursor,
                                       int end)

      • parseWithExpressions

        public static void parseWithExpressions​(java.lang.String nestParm,
                                        char[] block,
                                        int start,
                                        int offset,
                                        java.lang.Object ctx,
                                        VariableResolverFactory factory)

      • handleNumericConversion

        public static java.lang.Object handleNumericConversion​(char[] val,
                                                       int start,
                                                       int offset)

      • isNumeric

        public static boolean isNumeric​(java.lang.Object val)

      • numericTest

        public static int numericTest​(char[] val,
                              int start,
                              int offset)

      • isNumber

        public static boolean isNumber​(java.lang.Object val)

      • isNumber

        public static boolean isNumber​(java.lang.String val)

      • isNumber

        public static boolean isNumber​(char[] val,
                               int start,
                               int offset)

      • find

        public static int find​(char[] c,
                       int start,
                       int offset,
                       char find)

      • findLast

        public static int findLast​(char[] c,
                           int start,
                           int offset,
                           char find)

      • createStringTrimmed

        public static java.lang.String createStringTrimmed​(char[] s)

      • createStringTrimmed

        public static java.lang.String createStringTrimmed​(char[] s,
                                                   int start,
                                                   int length)

      • endsWith

        public static boolean endsWith​(char[] c,
                               int start,
                               int offset,
                               char[] test)

      • isIdentifierPart

        public static boolean isIdentifierPart​(int c)

      • isDigit

        public static boolean isDigit​(int c)

      • similarity

        public static float similarity​(java.lang.String s1,
                               java.lang.String s2)

      • findAbsoluteLast

        public static int findAbsoluteLast​(char[] array)

      • getBaseComponentType

        public static java.lang.Class getBaseComponentType​(java.lang.Class cls)

      • getSubComponentType

        public static java.lang.Class getSubComponentType​(java.lang.Class cls)

      • isJunct

        public static boolean isJunct​(char c)

      • opLookup

        public static int opLookup​(char c)

      • isReservedWord

        public static boolean isReservedWord​(java.lang.String name)
        Check if the specified string is a reserved word in the parser.
        Parameters:
        name - -
        Returns:
        -

      • isNotValidNameorLabel

        public static boolean isNotValidNameorLabel​(java.lang.String name)
        Check if the specfied string represents a valid name of label.
        Parameters:
        name - -
        Returns:
        -

      • isPropertyOnly

        public static boolean isPropertyOnly​(char[] array,
                                     int start,
                                     int end)

      • isArrayType

        public static boolean isArrayType​(char[] array,
                                  int start,
                                  int end)

      • checkNameSafety

        public static void checkNameSafety​(java.lang.String name)

      • getDebugFileWriter

        public static java.io.FileWriter getDebugFileWriter()
                                             throws java.io.IOException
        Throws:
        java.io.IOException

      • isPrimitiveWrapper

        public static boolean isPrimitiveWrapper​(java.lang.Class clazz)

      • subCompileExpression

        public static java.io.Serializable subCompileExpression​(char[] expression)

      • subCompileExpression

        public static java.io.Serializable subCompileExpression​(char[] expression,
                                                        ParserContext ctx)

      • subCompileExpression

        public static java.io.Serializable subCompileExpression​(char[] expression,
                                                        int start,
                                                        int offset,
                                                        ParserContext ctx)

      • subCompileExpression

        public static java.io.Serializable subCompileExpression​(java.lang.String expression,
                                                        ParserContext ctx)

      • optimizeTree

        public static java.io.Serializable optimizeTree​(CompiledExpression compiled)

      • _optimizeTree

        private static java.io.Serializable _optimizeTree​(CompiledExpression compiled)

      • isWhitespace

        public static boolean isWhitespace​(char c)

      • repeatChar

        public static java.lang.String repeatChar​(char c,
                                          int times)

      • loadFromFile

        public static char[] loadFromFile​(java.io.File file)
                           throws java.io.IOException
        Throws:
        java.io.IOException

      • loadFromFile

        public static char[] loadFromFile​(java.io.File file,
                                  java.lang.String encoding)
                           throws java.io.IOException
        Throws:
        java.io.IOException

      • readIn

        public static char[] readIn​(java.io.InputStream inStream,
                            java.lang.String encoding)
                     throws java.io.IOException
        Throws:
        java.io.IOException

      • forNameWithInner

        public static java.lang.Class forNameWithInner​(java.lang.String className,
                                               java.lang.ClassLoader classLoader)
                                        throws java.lang.ClassNotFoundException
        Throws:
        java.lang.ClassNotFoundException

      • findInnerClass

        public static java.lang.Class findInnerClass​(java.lang.String className,
                                             java.lang.ClassLoader classLoader,
                                             java.lang.ClassNotFoundException cnfe)
                                      throws java.lang.ClassNotFoundException
        Throws:
        java.lang.ClassNotFoundException

      • skipStringEscape

        private static int skipStringEscape​(int cur)