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package org.eclipse.cdt.core.parser.tests;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.List;
import junit.framework.TestCase;
import org.eclipse.cdt.internal.core.dom.BaseSpecifier;
import org.eclipse.cdt.internal.core.dom.ClassSpecifier;
import org.eclipse.cdt.internal.core.dom.DOMBuilder;
import org.eclipse.cdt.internal.core.dom.Declarator;
import org.eclipse.cdt.internal.core.dom.ParameterDeclaration;
import org.eclipse.cdt.internal.core.dom.ParameterDeclarationClause;
import org.eclipse.cdt.internal.core.dom.SimpleDeclaration;
import org.eclipse.cdt.internal.core.dom.TranslationUnit;
import org.eclipse.cdt.internal.core.parser.Parser;
import org.eclipse.cdt.internal.core.parser.ParserException;
import org.eclipse.cdt.internal.core.parser.util.DeclarationSpecifier;
import org.eclipse.cdt.internal.core.parser.util.Name;
/**
* Tests the construction of DOMs for snippets of code
*/
public class DOMTests extends TestCase {
public TranslationUnit parse(String code) throws Exception {
DOMBuilder domBuilder = new DOMBuilder();
Parser parser = new Parser(code, domBuilder);
if( ! parser.parse() ) throw new ParserException( "Parse failure" );
return domBuilder.getTranslationUnit();
}
/**
* Test code: int x;
* Purpose: to test the simple decaration in it's simplest form.
*/
public void testIntGlobal() throws Exception {
// Parse and get the translation Unit
TranslationUnit translationUnit = parse("int x;");
// Get the simple declaration
List declarations = translationUnit.getDeclarations();
assertEquals(1, declarations.size());
SimpleDeclaration declaration = (SimpleDeclaration)declarations.get(0);
// Make sure it is only an int
assertEquals(DeclarationSpecifier.t_int, declaration.getDeclSpecifier().getDeclSpecifierSeq());
// Get the declarator and check its name
List declarators = declaration.getDeclarators();
assertEquals(1, declarators.size());
Declarator declarator = (Declarator)declarators.get(0);
Name name = declarator.getName();
assertEquals("x", name.toString());
}
/**
* Test code: class A { } a;
* Purpose: tests the use of a classSpecifier in
*/
public void testEmptyClass() throws Exception {
// Parse and get the translation unit
Writer code = new StringWriter();
code.write("class A { } a;");
TranslationUnit translationUnit = parse(code.toString());
// Get the simple declaration
List declarations = translationUnit.getDeclarations();
assertEquals(1, declarations.size());
SimpleDeclaration declaration = (SimpleDeclaration)declarations.get(0);
// Make sure it is a type specifier
assertEquals(0, declaration.getDeclSpecifier().getDeclSpecifierSeq());
// Get the class specifier and check its name
ClassSpecifier classSpecifier = (ClassSpecifier)declaration.getTypeSpecifier();
Name className = classSpecifier.getName();
assertEquals("A", className.toString());
// Get the declarator and check it's name
List declarators = declaration.getDeclarators();
assertEquals(1, declarators.size());
Declarator declarator = (Declarator)declarators.get(0);
Name name = declarator.getName();
assertEquals("a", name.toString());
}
/**
* Test code: class A { public: int x; };
* Purpose: tests a declaration in a class scope.
*/
public void testSimpleClassMember() throws Exception {
// Parse and get the translaton unit
Writer code = new StringWriter();
code.write("class A { public: int x; };");
TranslationUnit translationUnit = parse(code.toString());
// Get the declaration
List declarations = translationUnit.getDeclarations();
assertEquals(1, declarations.size());
SimpleDeclaration declaration = (SimpleDeclaration)declarations.get(0);
// Make sure there is no declarator
assertEquals(0, declaration.getDeclarators().size());
// Make sure it's a type specifier
assertEquals(0, declaration.getDeclSpecifier().getDeclSpecifierSeq());
// Get the class specifier and check its name
ClassSpecifier classSpecifier = (ClassSpecifier)declaration.getTypeSpecifier();
Name className = classSpecifier.getName();
assertEquals("A", className.toString());
// Get the member declaration
declarations = classSpecifier.getDeclarations();
assertEquals(1, declarations.size());
declaration = (SimpleDeclaration)declarations.get(0);
// Make sure it's an int
assertEquals(DeclarationSpecifier.t_int, declaration.getDeclSpecifier().getDeclSpecifierSeq());
// Get the declarator and check it's name
List declarators = declaration.getDeclarators();
assertEquals(1, declarators.size());
Declarator declarator = (Declarator)declarators.get(0);
Name name = declarator.getName();
assertEquals("x", name.toString());
}
/**
* Test code: class A : public B, private C, virtual protected D { public: int x, y; float a,b,c; }
* Purpose: tests a declaration in a class scope.
*/
public void testSimpleClassMembers() throws Exception {
// Parse and get the translaton unit
Writer code = new StringWriter();
code.write("class A : public B, private C, virtual protected D { public: int x, y; float a,b,c; };");
TranslationUnit translationUnit = parse(code.toString());
// Get the declaration
List declarations = translationUnit.getDeclarations();
assertEquals(1, declarations.size());
SimpleDeclaration declaration = (SimpleDeclaration)declarations.get(0);
// Make sure there is no declarator
assertEquals(0, declaration.getDeclarators().size());
// Make sure it's a type specifier
assertEquals(0, declaration.getDeclSpecifier().getDeclSpecifierSeq());
// Get the class specifier and check its name
ClassSpecifier classSpecifier = (ClassSpecifier)declaration.getTypeSpecifier();
Name className = classSpecifier.getName();
assertEquals("A", className.toString());
List baseClasses = classSpecifier.getBaseSpecifiers();
assertEquals( 3, baseClasses.size() );
BaseSpecifier bs = (BaseSpecifier)baseClasses.get( 0 );
assertEquals( bs.getAccess(), BaseSpecifier.t_public );
assertEquals( bs.isVirtual(), false );
assertEquals( bs.getName(), "B" );
bs = (BaseSpecifier)baseClasses.get( 1 );
assertEquals( bs.getAccess(), BaseSpecifier.t_private );
assertEquals( bs.isVirtual(), false );
assertEquals( bs.getName(), "C" );
bs = (BaseSpecifier)baseClasses.get( 2 );
assertEquals( bs.getAccess(), BaseSpecifier.t_protected );
assertEquals( bs.isVirtual(), true );
assertEquals( bs.getName(), "D" );
// Get the member declaration
declarations = classSpecifier.getDeclarations();
assertEquals(2, declarations.size());
declaration = (SimpleDeclaration)declarations.get(0);
// Make sure it's an int
assertEquals(DeclarationSpecifier.t_int, declaration.getDeclSpecifier().getDeclSpecifierSeq());
// Get the declarator and check it's name
List declarators = declaration.getDeclarators();
assertEquals(2, declarators.size());
Declarator declarator = (Declarator)declarators.get(0);
Name name = declarator.getName();
assertEquals("x", name.toString());
declarator = (Declarator)declarators.get(1);
name = declarator.getName();
assertEquals("y", name.toString());
declaration = (SimpleDeclaration)declarations.get(1);
// Make sure it's an float
assertEquals(DeclarationSpecifier.t_float, declaration.getDeclSpecifier().getDeclSpecifierSeq());
declarators = declaration.getDeclarators();
assertEquals( 3, declarators.size() );
name = ((Declarator)declarators.get(0)).getName();
assertEquals( "a", name.toString() );
name = ((Declarator)declarators.get(1)).getName();
assertEquals( "b", name.toString() );
name = ((Declarator)declarators.get(2)).getName();
assertEquals( "c", name.toString() );
}
/**
* Test code: int myFunction( void );
*/
public void testSimpleFunctionDeclaration() throws Exception
{
// Parse and get the translaton unit
Writer code = new StringWriter();
code.write("void myFunction( void );");
TranslationUnit translationUnit = parse(code.toString());
// Get the declaration
List declarations = translationUnit.getDeclarations();
assertEquals(1, declarations.size());
SimpleDeclaration simpleDeclaration = (SimpleDeclaration)declarations.get(0);
assertEquals( simpleDeclaration.getDeclSpecifier().getType(), DeclarationSpecifier.t_void );
List declarators = simpleDeclaration.getDeclarators();
assertEquals( 1, declarators.size() );
Declarator functionDeclarator = (Declarator)declarators.get( 0 );
assertEquals( functionDeclarator.getName().toString(), "myFunction" );
ParameterDeclarationClause pdc = functionDeclarator.getParms();
assertNotNull( pdc );
List parameterDecls = pdc.getDeclarations();
assertEquals( 1, parameterDecls.size() );
ParameterDeclaration parm1 = (ParameterDeclaration)parameterDecls.get( 0 );
assertEquals( DeclarationSpecifier.t_void, parm1.getDeclSpecifier().getType() );
List parm1Decls = parm1.getDeclarators();
assertEquals( 1, parm1Decls.size() );
Declarator parm1Declarator = (Declarator) parm1Decls.get(0);
assertNull( parm1Declarator.getName() );
}
/**
* Test code: "class A { int floor( double input ), someInt; };"
*/
public void testMultipleDeclarators() throws Exception
{
// Parse and get the translaton unit
Writer code = new StringWriter();
code.write("class A { int floor( double input ), someInt; };");
TranslationUnit translationUnit = parse(code.toString());
List tudeclarations = translationUnit.getDeclarations();
assertEquals( 1, tudeclarations.size() );
SimpleDeclaration classDecl = (SimpleDeclaration)tudeclarations.get(0);
assertEquals( 0, classDecl.getDeclarators().size() );
ClassSpecifier classSpec = (ClassSpecifier)classDecl.getTypeSpecifier();
List classDeclarations = classSpec.getDeclarations();
assertEquals( classDeclarations.size(), 1 );
SimpleDeclaration simpleDeclaration = (SimpleDeclaration)classDeclarations.get(0);
assertEquals( simpleDeclaration.getDeclSpecifier().getType(), DeclarationSpecifier.t_int );
List simpleDeclarators = simpleDeclaration.getDeclarators();
assertEquals( simpleDeclarators.size(), 2 );
Declarator methodDeclarator = (Declarator)simpleDeclarators.get(0);
assertEquals( methodDeclarator.getName().toString(), "floor" );
ParameterDeclarationClause pdc = methodDeclarator.getParms();
assertNotNull( pdc );
List parameterDeclarations = pdc.getDeclarations();
assertEquals( 1, parameterDeclarations.size() );
ParameterDeclaration parm1Declaration = (ParameterDeclaration)parameterDeclarations.get(0);
assertEquals( DeclarationSpecifier.t_double, parm1Declaration.getDeclSpecifier().getType() );
List parm1Declarators = parm1Declaration.getDeclarators();
assertEquals( parm1Declarators.size(), 1 );
Declarator parm1Declarator = (Declarator)parm1Declarators.get(0);
assertEquals( parm1Declarator.getName().toString(), "input" );
Declarator integerDeclarator = (Declarator)simpleDeclarators.get(1);
assertEquals( integerDeclarator.getName().toString(), "someInt" );
assertNull( integerDeclarator.getParms() );
}
// public void testErrors()
// {
// validateWeEncounterAnError( "void myFunc( int hey, flo );");
// }
public void validateWeEncounterAnError( String codeText )
{
try
{
// Parse and get the translaton unit
Writer code = new StringWriter();
code.write(codeText);
try
{
TranslationUnit translationUnit = parse(code.toString());
fail( "We should not reach this line. Failure.");
} catch( ParserException pe )
{
}
catch( Exception e )
{
fail( "Unknown exception " + e.getMessage() );
}
}catch( IOException io )
{
fail( "IOException thrown");
}
}
}
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