import net.sourceforge.phpdt.internal.compiler.flow.LabelFlowContext;
import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
-
public class LabeledStatement extends Statement {
-
+
public Statement statement;
+
public char[] label;
+
public Label targetLabel;
// for local variables table attributes
int mergedInitStateIndex = -1;
-
+
/**
* LabeledStatement constructor comment.
*/
public LabeledStatement(char[] l, Statement st, int s, int e) {
-
+
this.statement = st;
this.label = l;
this.sourceStart = s;
this.sourceEnd = e;
}
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- // need to stack a context to store explicit label, answer inits in case of normal completion merged
- // with those relative to the exit path from break statement occurring inside the labeled statement.
+
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo) {
+
+ // need to stack a context to store explicit label, answer inits in case
+ // of normal completion merged
+ // with those relative to the exit path from break statement occurring
+ // inside the labeled statement.
if (statement == null) {
return flowInfo;
} else {
LabelFlowContext labelContext;
- FlowInfo mergedInfo =
- statement
- .analyseCode(
- currentScope,
- (labelContext =
- new LabelFlowContext(
- flowContext,
- this,
- label,
- (targetLabel = new Label()),
- currentScope)),
- flowInfo)
- .mergedWith(labelContext.initsOnBreak);
- mergedInitStateIndex =
- currentScope.methodScope().recordInitializationStates(mergedInfo);
+ FlowInfo mergedInfo = statement.analyseCode(
+ currentScope,
+ (labelContext = new LabelFlowContext(flowContext, this,
+ label, (targetLabel = new Label()), currentScope)),
+ flowInfo).mergedWith(labelContext.initsOnBreak);
+ mergedInitStateIndex = currentScope.methodScope()
+ .recordInitializationStates(mergedInfo);
return mergedInfo;
}
}
-
+
public ASTNode concreteStatement() {
-
- // return statement.concreteStatement(); // for supporting nested labels: a:b:c: someStatement (see 21912)
+
+ // return statement.concreteStatement(); // for supporting nested
+ // labels: a:b:c: someStatement (see 21912)
return statement;
}
-
+
/**
* Code generation for labeled statement
- *
+ *
* may not need actual source positions recording
- *
- * @param currentScope net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
- * @param codeStream net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
+ *
+ * @param currentScope
+ * net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
+ * @param codeStream
+ * net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
*/
-// public void generateCode(BlockScope currentScope, CodeStream codeStream) {
-//
-// int pc = codeStream.position;
-// if (targetLabel != null) {
-// targetLabel.codeStream = codeStream;
-// if (statement != null) {
-// statement.generateCode(currentScope, codeStream);
-// }
-// targetLabel.place();
-// }
-// // May loose some local variable initializations : affecting the local variable attributes
-// if (mergedInitStateIndex != -1) {
-// codeStream.removeNotDefinitelyAssignedVariables(
-// currentScope,
-// mergedInitStateIndex);
-// }
-// codeStream.recordPositionsFrom(pc, this.sourceStart);
-// }
+ // public void generateCode(BlockScope currentScope, CodeStream codeStream)
+ // {
+ //
+ // int pc = codeStream.position;
+ // if (targetLabel != null) {
+ // targetLabel.codeStream = codeStream;
+ // if (statement != null) {
+ // statement.generateCode(currentScope, codeStream);
+ // }
+ // targetLabel.place();
+ // }
+ // // May loose some local variable initializations : affecting the local
+ // variable attributes
+ // if (mergedInitStateIndex != -1) {
+ // codeStream.removeNotDefinitelyAssignedVariables(
+ // currentScope,
+ // mergedInitStateIndex);
+ // }
+ // codeStream.recordPositionsFrom(pc, this.sourceStart);
+ // }
public StringBuffer printStatement(int tab, StringBuffer output) {
printIndent(tab, output).append(label).append(": "); //$NON-NLS-1$
- if (this.statement == null)
+ if (this.statement == null)
output.append(';');
- else
- this.statement.printStatement(0, output);
+ else
+ this.statement.printStatement(0, output);
return output;
}
+
public void resolve(BlockScope scope) {
-
+
statement.resolve(scope);
}
-
+
public String toString(int tab) {
String s = tabString(tab);
return s;
}
- public void traverse(
- ASTVisitor visitor,
- BlockScope blockScope) {
+ public void traverse(ASTVisitor visitor, BlockScope blockScope) {
if (visitor.visit(this, blockScope)) {
statement.traverse(visitor, blockScope);
}
public void resetStateForCodeGeneration() {
- if (this.targetLabel != null) {
+ if (this.targetLabel != null) {
this.targetLabel.resetStateForCodeGeneration();
}
}