me.jaimegarza.syntax.language

Class BaseLanguageSupport

java.lang.Object

me.jaimegarza.syntax.language.BaseLanguageSupport

All Implemented Interfaces:

LanguageSupport

Direct Known Subclasses:

C, Java, Javascript, Pascal

public abstract class BaseLanguageSupport
extends Object
implements LanguageSupport

Class that contains routines common to all language drivers

Author:

jaimegarza@gmail.com

Field Summary

Fields

Modifier and Type	Field and Description
protected Environment	environment
protected RuntimeData	runtime

Constructor Summary

Constructors

Constructor and Description
BaseLanguageSupport()

Method Summary

Modifier and Type	Method and Description
protected String	computeModeName(String lexerMode)
void	emitLine(int lineNumber) emit #line in C
void	emitLine(int lineNumber, String filename) emit #line in C
protected String	escapeDoubleQuotes(String error)
boolean	generateLexerCode(FormattingPrintStream output, String lexerMode, Lexer lexer, Terminal token, int additionalIndent) Emit the code for the lexical part of the grammar
boolean	generateRuleCode(Lexer lexer, EmbeddedCodeProcessor processor, int elementCount, String nonTerminalId, int sourceColumn) Parsing logic Scan the input stream until a rule set of actions end.
boolean	getDefaultIncludeFlag() tells me the default value for include file generation
int	getDefaultIndent() the deault indentation is language dependent
Environment	getEnvironment()
protected String	getErrorMessage(State I)
protected int	getLexerCodeOffsetIndent() %lexer needs to be indented as per given language.
int	getNumberOfSpacesPerIndent() number of spaces per indent
RuntimeData	getRuntime()
protected String	getShortSymbolName(Symbol t)
String	indent(FormattingPrintStream out, int n) Indents a number of separators, based on the number of spaces per indent.
String	indent(int n) Indents a number of separators, returning the string
protected boolean	lexerComment(FormattingPrintStream output, Lexer lexer, char characterToFind)
protected boolean	lexerDollar(FormattingPrintStream output, String lexerMode, Lexer lexer, Terminal token)
protected boolean	lexerString(FormattingPrintStream output, Lexer lexer, char characterToFind)
protected int	manageDollar(Lexer lexer, EmbeddedCodeProcessor processor, int elementCount, String nonTerminalId)
void	setEnvironment(Environment environment)
void	setRuntime(RuntimeData runtime)

Methods inherited from class java.lang.Object

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

Methods inherited from interface me.jaimegarza.syntax.language.LanguageSupport

generateCaseEnd, generateCaseStart, generateCodeGeneratorFooter, generateCodeGeneratorHeader, generateEdgeHeader, generateErrorToken, generateIntArrayComment, generateIntArrayFooter, generateIntArrayRow, generateLexerFooter, generateLexerHeader, generateLexerModeCase, generateLexerModeDefinition, generateLexerModeFooter, generateLexerModeHeader, generateRecoveryTableHeader, generateRegexEnd, generateRegexMatch, generateRegexReturn, generateStructure, generateToken, generateTokenDefinitions, generateTokensHeader, generateVertexHeader, generateVoidCodeGenerator, getExtensionSuffix, getId, getIncludeExtensionSuffix, getLanguageCode, getLexerModeRoutine, printAction, printActionHeader, printCodeHeader, printErrorEntry, printErrorFooter, printErrorTableHeader, printGoTo, printGoToTableHeader, printGrammarTable, printMissingSkeleton, printPackedState, printParserErrors, printParsingTableHeader, printTableRow

Field Detail

environment

protected Environment environment

runtime

protected RuntimeData runtime

Constructor Detail

BaseLanguageSupport

public BaseLanguageSupport()

Method Detail

getDefaultIncludeFlag

public boolean getDefaultIncludeFlag()

Description copied from interface: LanguageSupport

tells me the default value for include file generation

Specified by:

getDefaultIncludeFlag in interface LanguageSupport

Returns:

the default setting

getDefaultIndent

public int getDefaultIndent()

Description copied from interface: LanguageSupport

the deault indentation is language dependent

Specified by:

getDefaultIndent in interface LanguageSupport

emitLine

public void emitLine(int lineNumber)

Description copied from interface: LanguageSupport

emit #line in C

Specified by:

emitLine in interface LanguageSupport

Parameters:

lineNumber - is the line number

emitLine

public void emitLine(int lineNumber,
                     String filename)

Description copied from interface: LanguageSupport

emit #line in C

Specified by:

emitLine in interface LanguageSupport

Parameters:

lineNumber - is the line number

filename - is the filename

getNumberOfSpacesPerIndent

public int getNumberOfSpacesPerIndent()

Description copied from interface: LanguageSupport

number of spaces per indent

Specified by:

getNumberOfSpacesPerIndent in interface LanguageSupport

Returns:

the number of spaces per indent

getLexerCodeOffsetIndent

protected int getLexerCodeOffsetIndent()

%lexer needs to be indented as per given language. This will be overriden in each language as needed

indent

public String indent(FormattingPrintStream out,
                     int n)

Description copied from interface: LanguageSupport

Indents a number of separators, based on the number of spaces per indent.

Specified by:

indent in interface LanguageSupport

Parameters:

out - is the output stream. it can be null

n - is the number of indentations

Returns:

the string with all the indents

indent

public String indent(int n)

Description copied from interface: LanguageSupport

Indents a number of separators, returning the string

Specified by:

indent in interface LanguageSupport

Parameters:

n - is the number of indentations

Returns:

the string with all the indents

getEnvironment

public Environment getEnvironment()

Returns:

the environment

setEnvironment

public void setEnvironment(Environment environment)

Parameters:

environment - the environment to set

getRuntime

public RuntimeData getRuntime()

Returns:

the runtime

setRuntime

public void setRuntime(RuntimeData runtime)

Parameters:

runtime - the runtime to set

generateRuleCode

public boolean generateRuleCode(Lexer lexer,
                                EmbeddedCodeProcessor processor,
                                int elementCount,
                                String nonTerminalId,
                                int sourceColumn)

Description copied from interface: LanguageSupport

Parsing logic Scan the input stream until a rule set of actions end. The format for ending rules is language dependent

Specified by:

generateRuleCode in interface LanguageSupport

Parameters:

lexer - the element that will give me the lexical logic

processor - is the processor for rules

elementCount - the number of elements in the rule

nonTerminalId - the non terminal id for the rule

sourceColumn - is the column number

Returns:

true if OK

manageDollar

protected int manageDollar(Lexer lexer,
                           EmbeddedCodeProcessor processor,
                           int elementCount,
                           String nonTerminalId)

lexerDollar

protected boolean lexerDollar(FormattingPrintStream output,
                              String lexerMode,
                              Lexer lexer,
                              Terminal token)

lexerComment

protected boolean lexerComment(FormattingPrintStream output,
                               Lexer lexer,
                               char characterToFind)

lexerString

protected boolean lexerString(FormattingPrintStream output,
                              Lexer lexer,
                              char characterToFind)

computeModeName

protected String computeModeName(String lexerMode)

generateLexerCode

public boolean generateLexerCode(FormattingPrintStream output,
                                 String lexerMode,
                                 Lexer lexer,
                                 Terminal token,
                                 int additionalIndent)

Description copied from interface: LanguageSupport

Emit the code for the lexical part of the grammar

Specified by:

generateLexerCode in interface LanguageSupport

Parameters:

output - is the stream to write to

lexerMode - is the string representing the desired mode

lexer - is the lexer to obtain more characters

token - is the current token for which generation is attempted

additionalIndent - is the wanted indentation delta

Returns:

true if OK

getErrorMessage

protected String getErrorMessage(State I)

escapeDoubleQuotes

protected String escapeDoubleQuotes(String error)

getShortSymbolName

protected String getShortSymbolName(Symbol t)