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Cosmetics.

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Sergey Prigogin 2015-03-07 23:42:15 -08:00
parent acbd1e14f8
commit 7020c95a8b
1 changed files with 25 additions and 30 deletions
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55
codan/org.eclipse.cdt.codan.core.cxx/src/org/eclipse/cdt/codan/core/cxx/CxxAstUtils.java
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@ -59,7 +59,7 @@ import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.CoreException;
/** /**
* Useful functions for doing code analysis on c/c++ AST * Useful functions for doing code analysis on C/C++ AST.
*/ */
public final class CxxAstUtils { public final class CxxAstUtils {
public static class NameFinderVisitor extends ASTVisitor { public static class NameFinderVisitor extends ASTVisitor {
@ -102,11 +102,12 @@ public final class CxxAstUtils {
try { try {
while (typeName instanceof ITypedef) { while (typeName instanceof ITypedef) {
IType t = ((ITypedef) typeName).getType(); IType t = ((ITypedef) typeName).getType();
if (t instanceof IBinding) if (t instanceof IBinding) {
typeName = (IBinding) t; typeName = (IBinding) t;
else } else {
return t; return t;
} }
}
} catch (Exception e) { // in CDT 6.0 getType throws DOMException } catch (Exception e) { // in CDT 6.0 getType throws DOMException
Activator.log(e); Activator.log(e);
} }
@ -145,33 +146,32 @@ public final class CxxAstUtils {
} }
/** /**
* @param astName * @param astName the name for the declaration
* a name for the declaration * @param factory the factory
* @param factory * @param index the index
* the factory * @return the created declaration
* @param index
* @return
*/ */
public static IASTDeclaration createDeclaration(IASTName astName, INodeFactory factory, IIndex index) { public static IASTDeclaration createDeclaration(IASTName astName, INodeFactory factory, IIndex index) {
// Depending on context, either a type or a declaration is easier to // Depending on context, either a type or a declaration is easier to infer.
// infer
IType inferredType = null; IType inferredType = null;
IASTSimpleDeclaration declaration = null; IASTSimpleDeclaration declaration = null;
inferredType = tryInferTypeFromBinaryExpr(astName); inferredType = tryInferTypeFromBinaryExpr(astName);
if (inferredType == null) if (inferredType == null)
declaration = tryInferTypeFromFunctionCall(astName, factory, index); declaration = tryInferTypeFromFunctionCall(astName, factory, index);
// After the inference, create the statement is needed // After the inference, create the statement is needed.
if (declaration != null) { // A declaration was generated if (declaration != null) {
// A declaration was generated.
return declaration; return declaration;
} else if (inferredType != null) { // A type was inferred, create the } else if (inferredType != null) {
// declaration and return it // A type was inferred, create the declaration and return it.
DeclarationGenerator generator = DeclarationGenerator.create(factory); DeclarationGenerator generator = DeclarationGenerator.create(factory);
IASTDeclarator declarator = generator.createDeclaratorFromType(inferredType, astName.toCharArray()); IASTDeclarator declarator = generator.createDeclaratorFromType(inferredType, astName.toCharArray());
IASTDeclSpecifier declspec = generator.createDeclSpecFromType(inferredType); IASTDeclSpecifier declspec = generator.createDeclSpecFromType(inferredType);
IASTSimpleDeclaration simpleDeclaration = factory.newSimpleDeclaration(declspec); IASTSimpleDeclaration simpleDeclaration = factory.newSimpleDeclaration(declspec);
simpleDeclaration.addDeclarator(declarator); simpleDeclaration.addDeclarator(declarator);
return simpleDeclaration; return simpleDeclaration;
} else { // Fallback - return a `void` declaration } else {
// Fallback - return a `void` declaration.
IASTDeclarator declarator = factory.newDeclarator(astName.copy(CopyStyle.withLocations)); IASTDeclarator declarator = factory.newDeclarator(astName.copy(CopyStyle.withLocations));
IASTSimpleDeclSpecifier declspec = factory.newSimpleDeclSpecifier(); IASTSimpleDeclSpecifier declspec = factory.newSimpleDeclSpecifier();
declspec.setType(Kind.eInt); declspec.setType(Kind.eInt);
@ -192,7 +192,7 @@ public final class CxxAstUtils {
IASTNode binaryExpr = astName.getParent().getParent(); IASTNode binaryExpr = astName.getParent().getParent();
for (IASTNode node : binaryExpr.getChildren()) { for (IASTNode node : binaryExpr.getChildren()) {
if (node != astName.getParent()) { if (node != astName.getParent()) {
// use this expression as type source // Use this expression as type source.
return ((IASTExpression) node).getExpressionType(); return ((IASTExpression) node).getExpressionType();
} }
} }
@ -239,7 +239,7 @@ public final class CxxAstUtils {
} }
try { try {
index.acquireReadLock(); index.acquireReadLock();
Set<IIndexName> declSet = new HashSet<IIndexName>(); Set<IIndexName> declSet = new HashSet<>();
// fill declSet with proper declarations // fill declSet with proper declarations
for (IBinding b : bindings) { for (IBinding b : bindings) {
if (b instanceof IFunction) { if (b instanceof IFunction) {
@ -251,7 +251,7 @@ public final class CxxAstUtils {
} }
} }
} }
HashMap<ITranslationUnit, IASTTranslationUnit> astCache = new HashMap<ITranslationUnit, IASTTranslationUnit>(); HashMap<ITranslationUnit, IASTTranslationUnit> astCache = new HashMap<>();
for (IIndexName decl : declSet) { for (IIndexName decl : declSet) {
// for now, just use the first overload found // for now, just use the first overload found
ITranslationUnit tu = getTranslationUnitFromIndexName(decl); ITranslationUnit tu = getTranslationUnitFromIndexName(decl);
@ -260,7 +260,7 @@ public final class CxxAstUtils {
} }
IASTTranslationUnit ast = null; IASTTranslationUnit ast = null;
if(astCache.containsKey(tu)) { if (astCache.containsKey(tu)) {
ast = astCache.get(tu); ast = astCache.get(tu);
} else { } else {
ast = tu.getAST(index, ITranslationUnit.AST_SKIP_INDEXED_HEADERS); ast = tu.getAST(index, ITranslationUnit.AST_SKIP_INDEXED_HEADERS);
@ -328,9 +328,9 @@ public final class CxxAstUtils {
* @return Either a type specifier or null * @return Either a type specifier or null
*/ */
public static IASTCompositeTypeSpecifier getCompositeTypeFromFunction(final IASTFunctionDefinition function, final IIndex index) { public static IASTCompositeTypeSpecifier getCompositeTypeFromFunction(final IASTFunctionDefinition function, final IIndex index) {
// return value to be set via visitor // Return value to be set via visitor.
final IASTCompositeTypeSpecifier returnSpecifier[] = { null }; final IASTCompositeTypeSpecifier returnSpecifier[] = { null };
final HashMap<ITranslationUnit, IASTTranslationUnit> astCache = new HashMap<ITranslationUnit, IASTTranslationUnit>(); final HashMap<ITranslationUnit, IASTTranslationUnit> astCache = new HashMap<>();
function.accept(new ASTVisitor() { function.accept(new ASTVisitor() {
{ {
shouldVisitDeclarators = true; shouldVisitDeclarators = true;
@ -342,8 +342,7 @@ public final class CxxAstUtils {
if (!(name instanceof ICPPASTQualifiedName && name.getParent().getParent() == function)) if (!(name instanceof ICPPASTQualifiedName && name.getParent().getParent() == function))
return PROCESS_CONTINUE; return PROCESS_CONTINUE;
ICPPASTQualifiedName qname = (ICPPASTQualifiedName) name; ICPPASTQualifiedName qname = (ICPPASTQualifiedName) name;
// A qualified name may have 1 name, but in our case needs to // A qualified name may have 1 name, but in our case needs to have 2.
// have 2.
// The pre-last name is either a namespace or a class. // The pre-last name is either a namespace or a class.
if (qname.getChildren().length < 2) { if (qname.getChildren().length < 2) {
return PROCESS_CONTINUE; return PROCESS_CONTINUE;
@ -388,10 +387,6 @@ public final class CxxAstUtils {
return returnSpecifier[0]; return returnSpecifier[0];
} }
/**
* @param body
* @return
*/
public static boolean isThrowStatement(IASTNode body) { public static boolean isThrowStatement(IASTNode body) {
if (!(body instanceof IASTExpressionStatement)) if (!(body instanceof IASTExpressionStatement))
return false; return false;
@ -409,10 +404,10 @@ public final class CxxAstUtils {
return false; return false;
IASTExpression functionNameExpression = ((IASTFunctionCallExpression) expression).getFunctionNameExpression(); IASTExpression functionNameExpression = ((IASTFunctionCallExpression) expression).getFunctionNameExpression();
if (functionNameExpression instanceof IASTIdExpression) { if (functionNameExpression instanceof IASTIdExpression) {
IASTName name = ((IASTIdExpression)functionNameExpression).getName(); IASTName name = ((IASTIdExpression) functionNameExpression).getName();
IBinding binding = name.resolveBinding(); IBinding binding = name.resolveBinding();
if (binding!=null && binding instanceof IFunction && ((IFunction)binding).isNoReturn()) { if (binding != null && binding instanceof IFunction && ((IFunction) binding).isNoReturn()) {
return true; return true;
} }
} }