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Code Issues Wiki Activity

Bug 468033 - Writing Variadic Templates with ASTWriter

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Change-Id: If724d328e99dfe3e1c0974025c4e517511cbfa25
Signed-off-by: Thomas Corbat <tcorbat@hsr.ch>
(cherry picked from commit 216f842984)
This commit is contained in:
Thomas Corbat 2015-05-22 16:29:03 +02:00
parent e51f7256e5
commit fdbe2a4543
4 changed files with 42 additions and 4 deletions
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15
core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterTemplateTestSource.awts
View file

@ -17,3 +17,18 @@ template<typename T> struct S
};
template<typename T> using Alias = S<T>;
Alias<int> sInt;
//!Variadic Function Template
//%CPP
template<typename T, typename... Args>
void f(T t, Args... args)
{
f(args...);
}
//!Variadic Class Template
//%CPP
template<typename... Args> struct S
{
static const int size = sizeof...(Args);
};

10
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/DeclaratorWriter.java
View file

@ -29,6 +29,7 @@ import org.eclipse.cdt.core.dom.ast.IASTPointer;
import org.eclipse.cdt.core.dom.ast.IASTPointerOperator;
import org.eclipse.cdt.core.dom.ast.IASTStandardFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTTypeId;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTDeclarator;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionDeclarator.RefQualifier;
@ -63,6 +64,8 @@ public class DeclaratorWriter extends NodeWriter {
writeFieldDeclarator((IASTFieldDeclarator) declarator);
} else if (declarator instanceof ICASTKnRFunctionDeclarator) {
writeCKnRFunctionDeclarator((ICASTKnRFunctionDeclarator) declarator);
} else if (declarator instanceof ICPPASTDeclarator) {
writeCPPDeclarator((ICPPASTDeclarator) declarator);
} else {
writeDefaultDeclarator(declarator);
}
@ -319,4 +322,11 @@ public class DeclaratorWriter extends NodeWriter {
protected void writeKnRParameterNames(ICASTKnRFunctionDeclarator knrFunct, IASTName[] parameterNames) {
writeNodeList(parameterNames);
}
protected void writeCPPDeclarator(ICPPASTDeclarator declarator) {
if (declarator.declaresParameterPack()) {
scribe.print(VAR_ARGS);
}
writeDefaultDeclarator(declarator);
}
}

12
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/ExpressionWriter.java
View file

@ -36,6 +36,7 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTDeleteExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFieldReference;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTLambdaExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTNewExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTPackExpansionExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTSimpleTypeConstructorExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTypeIdExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTUnaryExpression;
@ -69,7 +70,7 @@ public class ExpressionWriter extends NodeWriter{
private static final String TYPEID_OP = "typeid ("; //$NON-NLS-1$
private static final String OPEN_BRACKET_OP = "("; //$NON-NLS-1$
private static final String SIZEOF_OP = "sizeof "; //$NON-NLS-1$
private static final String SIZEOF_PARAMETER_PACK_OP = "sizeof... "; //$NON-NLS-1$
private static final String SIZEOF_PARAMETER_PACK_OP = "sizeof..."; //$NON-NLS-1$
private static final String NOT_OP = "!"; //$NON-NLS-1$
private static final String TILDE_OP = "~"; //$NON-NLS-1$
private static final String AMPERSAND_OP = "&"; //$NON-NLS-1$
@ -154,6 +155,8 @@ public class ExpressionWriter extends NodeWriter{
writeSimpleTypeConstructorExpression((ICPPASTSimpleTypeConstructorExpression) expression);
} else if (expression instanceof ICPPASTLambdaExpression) {
writeLambdaExpression((ICPPASTLambdaExpression) expression);
} else if (expression instanceof ICPPASTPackExpansionExpression) {
writePackExpansionExpression((ICPPASTPackExpansionExpression) expression);
}
}
@ -509,6 +512,8 @@ public class ExpressionWriter extends NodeWriter{
return ALIGNOF_OP + "("; //$NON-NLS-1$
case IASTTypeIdExpression.op_typeof:
return TYPEOF_OP;
case IASTTypeIdExpression.op_sizeofParameterPack:
return SIZEOF_PARAMETER_PACK_OP + "("; //$NON-NLS-1$
}
throw new IllegalArgumentException("Unknown TypeId Type"); //$NON-NLS-1$
}
@ -567,5 +572,10 @@ public class ExpressionWriter extends NodeWriter{
capture.getIdentifier().accept(visitor);
}
}
private void writePackExpansionExpression(ICPPASTPackExpansionExpression expression) {
visitNodeIfNotNull(expression.getPattern());
scribe.print(VAR_ARGS);
}
}

9
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/TemplateParameterWriter.java
View file

@ -70,13 +70,16 @@ public class TemplateParameterWriter extends NodeWriter {
private void writeSimpleTypeTemplateParameter(ICPPASTSimpleTypeTemplateParameter simple) {
switch (simple.getParameterType()) {
case ICPPASTSimpleTypeTemplateParameter.st_class:
scribe.printStringSpace(Keywords.CLASS);
scribe.print(Keywords.CLASS);
break;
case ICPPASTSimpleTypeTemplateParameter.st_typename:
scribe.printStringSpace(Keywords.TYPENAME);
scribe.print(Keywords.TYPENAME);
break;
}
if (simple.isParameterPack()) {
scribe.print(VAR_ARGS);
}
scribe.printSpace();
visitNodeIfNotNull(simple.getName());
if (simple.getDefaultType() != null){