me.jaimegarza.syntax.generator

Class SyntaxCodeParser

java.lang.Object

me.jaimegarza.syntax.generator.AbstractPhase

me.jaimegarza.syntax.generator.AbstractCodeParser

me.jaimegarza.syntax.generator.SyntaxCodeParser

All Implemented Interfaces:

EmbeddedCodeProcessor, Lexer

public class SyntaxCodeParser
extends AbstractCodeParser

Parser for a grammar.

Phases:

1. Code Parser (This Phase)
2. Structural Analysis
3. Table Generation
4. Writing Code

Author:

jaimegarza@gmail.com

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SyntaxCodeParser.StackElement

Field Summary

Fields inherited from class me.jaimegarza.syntax.generator.AbstractCodeParser

actLine, bActionDone, currentChar, currentNonTerminalName, currentRuleIndex, currentType, DISTINGUISHED_SYMBOL_NAME, finalActions, inputChars, isCurlyBrace, isEqual, isError, isErrorToken, isFirstToken, isRegexSlash, markers, mustClose, numberOfErrorTokens, recognized, ruleAssociativity, rulePrecedence, tokenActionCount, tokenNumber

Fields inherited from class me.jaimegarza.syntax.generator.AbstractPhase

environment, runtimeData

Constructor Summary

Constructors

Constructor and Description
SyntaxCodeParser(Environment env)

Method Summary

Modifier and Type	Method and Description
void	dumpTokens() Perform a round of tokenization and dump the results
void	execute() Execute this phase
int	getCharacterClassSymbol() Get a symbol while in a character class
char	getNextChar(boolean init) Get the next character
int	getNormalSymbol() Standard tokens.
int	getRegexSymbol()
SyntaxCodeParser.StackElement	getResult()
int	getTokenIndex(int token)
String	getTokenName(int token)
boolean	isVerbose()
int	parse() Main parser routine, uses Shift, Reduce and Recover
protected int	parserElement(boolean init) Get next token
protected int	parserError(int state, int sym, int stackTop, String errorMessage) report an error
void	setVerbose(boolean verbose) Change the verbose flag

Methods inherited from class me.jaimegarza.syntax.generator.AbstractCodeParser

computeAssociativityAndPrecedence, computeRootSymbol, declareOneItem, declareOneNonTerminal, declareOneTerminal, declareOneType, declareStart, decodeControlChar, decodeEscape, decodeHex, decodeOctal, finalizeRules, finalizeSymbols, generateCaseEnd, generateCaseStatement, generateCodeGeneratorFooter, generateCodeGeneratorHeader, generateConstant, generateDeclaration, generateDefaultRegexCode, generateDollarDollar, generateDollarLetter, generateDollarNumber, generateLexerCode, generateLexerFooter, generateRegexCode, generateStructure, generateTokenDefinitions, generateTopRecoveryTable, getCurrentCharacter, getDollarTextIndexFromStream, getNextCharacter, getSymbolWithName, getTypeFromStream, groupTokens, lineNumber, locateRuleWithId, nameOneNonTerminal, newEmptyRule, newItem, newRootRule, newRule, reviewDeclarations, ruleAction, setLeftHandOfLastRule, skipAndOutputCompositeComment, ungetChar

Methods inherited from class me.jaimegarza.syntax.generator.AbstractPhase

indent, left, right, span, span

Methods inherited from class java.lang.Object

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

Constructor Detail

SyntaxCodeParser

public SyntaxCodeParser(Environment env)

Method Detail

setVerbose

public void setVerbose(boolean verbose)

Change the verbose flag

Parameters:

verbose - if verbose is desired

isVerbose

public boolean isVerbose()

Returns:

the verbose flag

parse

public int parse()

Main parser routine, uses Shift, Reduce and Recover

Returns:

1 if OK

getResult

public SyntaxCodeParser.StackElement getResult()

Returns:

the current lexical value

getTokenName

public String getTokenName(int token)

Parameters:

token - is the number of the token

Returns:

the name of a token, given the token number

getTokenIndex

public int getTokenIndex(int token)

Parameters:

token - is the number of the token

Returns:

the name of a token, given the token number

dumpTokens

public void dumpTokens()

Perform a round of tokenization and dump the results

Specified by:

dumpTokens in class AbstractCodeParser

parserElement

protected int parserElement(boolean init)

Get next token

Parameters:

init - is set to true in the first call

Returns:

the next token, changing mode as needed

parserError

protected int parserError(int state,
                          int sym,
                          int stackTop,
                          String errorMessage)

report an error

Parameters:

state - the state of the error

sym - causing token

stackTop - the position in the stack when the error happened

errorMessage - is the suggested message

Returns:

always zero

getCharacterClassSymbol

public int getCharacterClassSymbol()

Get a symbol while in a character class

Returns:

the next token

getNextChar

public char getNextChar(boolean init)

Get the next character

Parameters:

init - indicates if this is the first call

Returns:

the next character in the stream

getRegexSymbol

public int getRegexSymbol()

getNormalSymbol

public int getNormalSymbol()

Description copied from interface: Lexer

Standard tokens. This routine deals with the parser type of symbols

Returns:

next token

execute

public void execute()
             throws ParsingException

Execute this phase

Specified by:

execute in class AbstractCodeParser

Throws:

ParsingException - on error. Check cause and message.