Package eu.bandm.tools.d2d2.base

Class StackPrinter.ExpressionPrinter

java.lang.Object

eu.bandm.tools.d2d2.model.MATCH_ONLY_00

eu.bandm.tools.d2d2.model.SinglePhase

eu.bandm.tools.d2d2.base.StackPrinter.ExpressionPrinter

Enclosing class:

StackPrinter

protected static class StackPrinter.ExpressionPrinter
extends SinglePhase

Simply prints expressions, inserting parentheses by priority. The derived class (local to StackPrinter) does additional highlighting for all contained references.

Field Summary

Fields

Modifier and Type	Field	Description
protected int	precedence	Reigster for the current precedence, for inserting parentheses.
protected PrintWriter	pw	The target for printing

Fields inherited from class eu.bandm.tools.d2d2.model.MATCH_ONLY_00

_visitor_debug_stream, partial

Constructor Summary

Constructors

Constructor	Description
ExpressionPrinter(PrintWriter pw)	Only constructor.

Method Summary

Modifier and Type	Method	Description
void	action(Alt x)	Print an alternative expression.
void	action(CharCut x)	Print a character cut expression.
void	action(CharJoin x)	Print a character join expression.
void	action(CharMinus x)	Print a character minus expression.
void	action(CharRange x)	Print a character range expression.
void	action(CharSetConst x)	Print a character set constant.
void	action(Insertion x)	Print an insertion expression.
void	action(Opt x)	Prints the sub-expression, followed by a question mark.
void	action(ParseParticle x)	Print a parse particle sub-expression of a character expression.
void	action(Pcdata x)	Print the symbolic tag for pcdata contents.
void	action(Perm x)	Print a permutation expression.
void	action(Plus x)	Prints the sub-expression, followed by a plus, possibly preceded by a tilde.
void	action(Reference x)	Print the source text of a reference.
void	action(Seq x)	Print a sequence expression.
void	action(Star x)	Prints the sub-expression, followed by a star, possibly preceded by a tilde.
void	action(StringConst x)	Print a string constant.
void	action(Subst x)	Raise error because all substitutions must be resolved when a parsing state is constructed.
(package private) void	printCharBin(CharBinary x, String sep, int predec)	Print a binary character operator.
protected void	printMult(Collection<Expression> subs, String sep, int prec)	Prints the argument sequence of Seq/Alt/Perm and puts parentheses iff the precedence decreases.
protected void	printPar(Expression x)	Prints the contents of a modifier Opt/Star/Plus.

Methods inherited from class eu.bandm.tools.d2d2.model.SinglePhase

action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, follow_definitions, follow_defInstances, follow_docu, follow_firsts, follow_globalSubsts, follow_imports, follow_itemDocu, follow_localdefs, follow_localSubsts, follow_modules, follow_namespaces, follow_obligates, follow_on, follow_rawModules, follow_text, follow_weakfirsts, follow_xattributes

Methods inherited from class eu.bandm.tools.d2d2.model.MATCH_ONLY_00

_visitor_trace, action, action, action, action, compile, followAll_definitions, followAll_defInstances, followAll_docu, followAll_firsts, followAll_globalSubsts, followAll_imports, followAll_itemDocu, followAll_localdefs, followAll_localSubsts, followAll_modules, followAll_namespaces, followAll_obligates, followAll_on, followAll_rawModules, followAll_text, followAll_weakfirsts, followAll_xattributes, foreignObject, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, nomatch

Methods inherited from class java.lang.Object

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

Field Details

pw

protected PrintWriter pw

The target for printing

precedence

protected int precedence

Reigster for the current precedence, for inserting parentheses.

Constructor Details

ExpressionPrinter

public ExpressionPrinter(PrintWriter pw)

Only constructor.

Method Details

action

public void action(Reference x)

Print the source text of a reference.

Overrides:

action in class SinglePhase

action

public void action(Pcdata x)

Print the symbolic tag for pcdata contents.

Overrides:

action in class SinglePhase

printPar

protected void printPar(Expression x)

Prints the contents of a modifier Opt/Star/Plus. Alt, Perm and Seq are enclosed in brackets, with reset precedence, others not.

action

public void action(Opt x)

Prints the sub-expression, followed by a question mark.

Overrides:

action in class SinglePhase

action

public void action(Star x)

Prints the sub-expression, followed by a star, possibly preceded by a tilde.

Overrides:

action in class SinglePhase

action

public void action(Plus x)

Prints the sub-expression, followed by a plus, possibly preceded by a tilde.

Overrides:

action in class SinglePhase

printMult

protected void printMult(Collection<Expression> subs,
 String sep,
 int prec)

Prints the argument sequence of Seq/Alt/Perm and puts parentheses iff the precedence decreases.

action

public void action(Alt x)

Print an alternative expression.

Overrides:

action in class SinglePhase

action

public void action(Seq x)

Print a sequence expression.

Overrides:

action in class SinglePhase

action

public void action(Perm x)

Print a permutation expression.

Overrides:

action in class SinglePhase

action

public void action(Insertion x)

Print an insertion expression. Most insertions have been eliminated in ResolvedModule, but some (containing only one reference) are inserted to close cycles.

Overrides:

action in class SinglePhase

printCharBin

void printCharBin(CharBinary x,
 String sep,
 int predec)

Print a binary character operator.

action

public void action(CharJoin x)

Print a character join expression.

Overrides:

action in class SinglePhase

action

public void action(CharCut x)

Print a character cut expression.

Overrides:

action in class SinglePhase

action

public void action(CharMinus x)

Print a character minus expression.

Overrides:

action in class SinglePhase

action

public void action(CharRange x)

Print a character range expression.

Overrides:

action in class SinglePhase

action

public void action(ParseParticle x)

Print a parse particle sub-expression of a character expression.

Overrides:

action in class SinglePhase

action

public void action(CharSetConst x)

Print a character set constant.

Overrides:

action in class SinglePhase

action

public void action(StringConst x)

Print a string constant.

Overrides:

action in class SinglePhase

action

public void action(Subst x)

Raise error because all substitutions must be resolved when a parsing state is constructed.

Overrides:

action in class SinglePhase