org.dbmaintain.script.parser.parsingstate.impl
Class BaseNormalParsingState

java.lang.Object
  org.dbmaintain.script.parser.parsingstate.impl.BaseNormalParsingState

All Implemented Interfaces:

ParsingState

Direct Known Subclasses:

PlSqlBlockNormalParsingState, SqlStatementNormalParsingState

public abstract class BaseNormalParsingState
extends Object
implements ParsingState

The default initial parsing state that is able to recognize the beginning of line comments, block comments, single and double quote literals and the ending of a statement.

Author:

Tim Ducheyne, Filip Neven

Field Summary

protected static Character	ASTERIX
protected static Character	BACKSLASH
protected boolean	backSlashEscapingEnabled
protected boolean	curlyBraceBlockCommentSupported
protected static Character	DASH
protected static Character	DOUBLE_QUOTE
protected HandleNextCharacterResult	endOfStatementResult
protected static Character	OPEN_CURLY_BRACE
protected PlSqlBlockMatcher	plSqlBlockMatcher
protected static Character	SEMICOLON
protected static Character	SINGLE_QUOTE
protected static Character	SLASH
protected HandleNextCharacterResult	stayInNormalExecutableResult
protected HandleNextCharacterResult	stayInNormalNotExecutableResult
protected HandleNextCharacterResult	toCurlyBraceBlockCommentResult
protected HandleNextCharacterResult	toEscapingParsingStateResult
protected HandleNextCharacterResult	toInBlockCommentResult
protected HandleNextCharacterResult	toInDoubleQuotesStateResult
protected HandleNextCharacterResult	toInLineCommentResult
protected HandleNextCharacterResult	toInPlSqlBlockStateResult
protected HandleNextCharacterResult	toInSingleQuotesStateResult

Constructor Summary

protected

BaseNormalParsingState(boolean backSlashEscapingEnabled, boolean curlyBraceBlockCommentSupported, PlSqlBlockMatcher plSqlBlockMatcher)

Method Summary

HandleNextCharacterResult	getNextParsingState(Character previousChar, Character currentChar, Character nextChar, StatementBuilder statementBuilder) Determines the next state.
protected abstract boolean	isEndOfStatement(Character previousChar, Character currentChar, StatementBuilder statementBuilder)
protected abstract boolean	isStatementSeparator(Character currentChar)
protected boolean	isWhitespace(Character character)
void	linkParsingStates(ParsingState inLineCommentParsingState, ParsingState inBlockCommentParsingState, ParsingState inCurlyBraceBlockCommentParsingState, ParsingState inSingleQuotesParsingState, ParsingState inDoubleQuotesParsingState, ParsingState escapingParsingState, ParsingState plSqlBlockNormalParsingState) Initializes the state with the given parsing states.

Methods inherited from class java.lang.Object

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

Field Detail

BACKSLASH

protected static final Character BACKSLASH

DASH

protected static final Character DASH

SLASH

protected static final Character SLASH

ASTERIX

protected static final Character ASTERIX

SINGLE_QUOTE

protected static final Character SINGLE_QUOTE

DOUBLE_QUOTE

protected static final Character DOUBLE_QUOTE

SEMICOLON

protected static final Character SEMICOLON

OPEN_CURLY_BRACE

protected static final Character OPEN_CURLY_BRACE

backSlashEscapingEnabled

protected boolean backSlashEscapingEnabled

curlyBraceBlockCommentSupported

protected boolean curlyBraceBlockCommentSupported

plSqlBlockMatcher

protected PlSqlBlockMatcher plSqlBlockMatcher

endOfStatementResult

protected HandleNextCharacterResult endOfStatementResult

stayInNormalNotExecutableResult

protected HandleNextCharacterResult stayInNormalNotExecutableResult

stayInNormalExecutableResult

protected HandleNextCharacterResult stayInNormalExecutableResult

toEscapingParsingStateResult

protected HandleNextCharacterResult toEscapingParsingStateResult

toInLineCommentResult

protected HandleNextCharacterResult toInLineCommentResult

toInBlockCommentResult

protected HandleNextCharacterResult toInBlockCommentResult

toCurlyBraceBlockCommentResult

protected HandleNextCharacterResult toCurlyBraceBlockCommentResult

toInSingleQuotesStateResult

protected HandleNextCharacterResult toInSingleQuotesStateResult

toInDoubleQuotesStateResult

protected HandleNextCharacterResult toInDoubleQuotesStateResult

toInPlSqlBlockStateResult

protected HandleNextCharacterResult toInPlSqlBlockStateResult

Constructor Detail

BaseNormalParsingState

protected BaseNormalParsingState(boolean backSlashEscapingEnabled,
                                 boolean curlyBraceBlockCommentSupported,
                                 PlSqlBlockMatcher plSqlBlockMatcher)

Method Detail

linkParsingStates

public void linkParsingStates(ParsingState inLineCommentParsingState,
                              ParsingState inBlockCommentParsingState,
                              ParsingState inCurlyBraceBlockCommentParsingState,
                              ParsingState inSingleQuotesParsingState,
                              ParsingState inDoubleQuotesParsingState,
                              ParsingState escapingParsingState,
                              ParsingState plSqlBlockNormalParsingState)

Initializes the state with the given parsing states.

Parameters:

inLineCommentParsingState - the inline comment state, not null

inBlockCommentParsingState - the block comment state, not null

inCurlyBraceBlockCommentParsingState - the curly brace block comment state, not null

inSingleQuotesParsingState - the single quote literal state, not null

inDoubleQuotesParsingState - the double quote literal state, not null

escapingParsingState - the escaping parsing state, not null

plSqlBlockNormalParsingState - the pl-sql block parsing state, not null

getNextParsingState

public HandleNextCharacterResult getNextParsingState(Character previousChar,
                                                     Character currentChar,
                                                     Character nextChar,
                                                     StatementBuilder statementBuilder)

Determines the next state. This will look for the beginning of a line comment, a block comment, a single quote literal and a double quote literal. A semi-colon indicates the end of the statement.

Specified by:

getNextParsingState in interface ParsingState

Parameters:

previousChar - The previous char, null if none

currentChar - The current char

nextChar - The next char, null if none

statementBuilder - The statement builder, not null

Returns:

The next parsing state, null if the end of the statement is reached

isStatementSeparator

protected abstract boolean isStatementSeparator(Character currentChar)

isEndOfStatement

protected abstract boolean isEndOfStatement(Character previousChar,
                                            Character currentChar,
                                            StatementBuilder statementBuilder)

isWhitespace

protected boolean isWhitespace(Character character)