gudusoft.gsqlparser.pp2.layout.rules

Class CaseRules

Object

gudusoft.gsqlparser.pp2.layout.rules.CaseRules

All Implemented Interfaces:

LayoutRule

public final class CaseRules
extends Object
implements LayoutRule

Lays out CASE expressions vertically: a linebreak before each WHEN, ELSE, and the closing END, keeping THEN on its WHEN line.

 CASE
 WHEN x = 1 THEN 'a'
 WHEN x = 2 THEN 'b'
 ELSE 'c'
 END
 

Operates over the IslandKind.CASE islands recognised in S22 (so a BEGIN ... END block's END is never mistaken for a CASE end). Incomplete CASE islands (no END, IncompleteReason.MISSING_END) are still laid out — their WHEN/ELSE break, and no END is fabricated. Nested CASE expressions are handled because each is its own island.

Priority LayoutPriorities.CASE_ANDOR. Needs the S22 islands on the context. Iterative (no recursion); read-only.

Plan reference: §7.3/S27, §7.4/S27.

Constructor Summary

Constructors

Constructor and Description
CaseRules()

Method Summary

Modifier and Type	Method and Description
void	apply(LayoutContext context) Apply the rule, requesting layout decisions on the context.
String	name() Short, stable identifier for logging/diagnostics.
int	priority() The rule's precedence.

Methods inherited from class Object

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

Constructor Detail

CaseRules

public CaseRules()

Method Detail

priority

public int priority()

Description copied from interface: LayoutRule

The rule's precedence. Higher-priority rules win conflicts over lower-priority ones regardless of registration order.

Specified by:

priority in interface LayoutRule

name

public String name()

Description copied from interface: LayoutRule

Short, stable identifier for logging/diagnostics.

Specified by:

name in interface LayoutRule

apply

public void apply(LayoutContext context)

Description copied from interface: LayoutRule

Apply the rule, requesting layout decisions on the context.

Specified by:

apply in interface LayoutRule