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Bug 539535 - Refactor CPPSemantics.findOverloadedOperator() so that if something goes wrong during one of the member or non-member lookups, the other is still performed

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Change-Id: I34c1321a0aa943ee82d1e6c45cf33d97e2f5b5ca
This commit is contained in:
Nathan Ridge 2018-09-28 01:45:23 -04:00
parent dcc09f1975
commit 956ce6b2dc
1 changed files with 40 additions and 23 deletions
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59
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
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@ -3851,21 +3851,9 @@ public class CPPSemantics {
static enum LookupMode {NO_GLOBALS, GLOBALS_IF_NO_MEMBERS, LIMITED_GLOBALS, ALL_GLOBALS} static enum LookupMode {NO_GLOBALS, GLOBALS_IF_NO_MEMBERS, LIMITED_GLOBALS, ALL_GLOBALS}
static ICPPFunction findOverloadedOperator(IScope pointOfDefinition, ICPPEvaluation[] args,
IType methodLookupType, OverloadableOperator operator, LookupMode mode) {
IASTNode pointOfInstantiation = CPPSemantics.getCurrentLookupPoint();
while (pointOfInstantiation instanceof IASTName) {
pointOfInstantiation= pointOfInstantiation.getParent();
}
ICPPClassType callToObjectOfClassType= null; static LookupData findOverloadedMemberOperator(IType methodLookupType, OverloadableOperator operator,
IType type2= null; ICPPEvaluation[] args, IASTNode pointOfInstantiation) {
if (args.length >= 2) {
type2 = args[1].getType();
type2= getNestedType(type2, TDEF | REF | CVTYPE);
}
// Find a method
LookupData methodData = null; LookupData methodData = null;
if (methodLookupType instanceof ISemanticProblem) if (methodLookupType instanceof ISemanticProblem)
return null; return null;
@ -3881,15 +3869,16 @@ public class CPPSemantics {
return null; return null;
lookup(methodData, scope); lookup(methodData, scope);
if (operator == OverloadableOperator.PAREN) {
callToObjectOfClassType= classType;
}
} catch (DOMException e) { } catch (DOMException e) {
return null; return null;
} }
} }
return methodData;
}
// Find a function static LookupData findOverloadedNonmemberOperator(IType methodLookupType, OverloadableOperator operator,
ICPPEvaluation[] args, IASTNode pointOfInstantiation, IScope pointOfDefinition,
LookupData methodData, LookupMode mode, IType type2, ICPPClassType callToObjectOfClassType) {
LookupData funcData = new LookupData(operator.toCharArray(), null, pointOfInstantiation); LookupData funcData = new LookupData(operator.toCharArray(), null, pointOfInstantiation);
// Global new and delete operators do not take an argument for the this pointer. // Global new and delete operators do not take an argument for the this pointer.
@ -3909,7 +3898,7 @@ public class CPPSemantics {
try { try {
IScope scope = CPPVisitor.getContainingScope(pointOfInstantiation); IScope scope = CPPVisitor.getContainingScope(pointOfInstantiation);
if (scope == null) if (scope == null)
return null; return funcData;
lookup(funcData, scope); lookup(funcData, scope);
try { try {
doArgumentDependentLookup(funcData); doArgumentDependentLookup(funcData);
@ -3947,7 +3936,7 @@ public class CPPSemantics {
} }
} }
} catch (DOMException e) { } catch (DOMException e) {
return null; return funcData;
} }
if (operator == OverloadableOperator.NEW || operator == OverloadableOperator.DELETE if (operator == OverloadableOperator.NEW || operator == OverloadableOperator.DELETE
@ -4021,7 +4010,7 @@ public class CPPSemantics {
} }
} }
} catch (DOMException e) { } catch (DOMException e) {
return null; return funcData;
} }
} }
@ -4030,6 +4019,34 @@ public class CPPSemantics {
mergeResults(funcData, builtins, false); mergeResults(funcData, builtins, false);
} }
return funcData;
}
static ICPPFunction findOverloadedOperator(IScope pointOfDefinition, ICPPEvaluation[] args,
IType methodLookupType, OverloadableOperator operator, LookupMode mode) {
IASTNode pointOfInstantiation = CPPSemantics.getCurrentLookupPoint();
while (pointOfInstantiation instanceof IASTName) {
pointOfInstantiation= pointOfInstantiation.getParent();
}
ICPPClassType callToObjectOfClassType= null;
IType type2= null;
if (args.length >= 2) {
type2 = args[1].getType();
type2= getNestedType(type2, TDEF | REF | CVTYPE);
}
// Find a method
LookupData methodData = findOverloadedMemberOperator(methodLookupType, operator, args,
pointOfInstantiation);
if (methodData != null && operator == OverloadableOperator.PAREN) {
callToObjectOfClassType = (ICPPClassType) methodLookupType;
}
// Find a function
LookupData funcData = findOverloadedNonmemberOperator(methodLookupType, operator, args,
pointOfInstantiation, pointOfDefinition, methodData, mode, type2, callToObjectOfClassType);
try { try {
IBinding binding = null; IBinding binding = null;
if (methodData != null && funcData.hasResults()) { if (methodData != null && funcData.hasResults()) {