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/*******************************************************************************
* Copyright (c) 2010 protos software gmbh (http://www.protos.de).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* CONTRIBUTORS:
* Thomas Schuetz and Henrik Rentz-Reichert (initial contribution)
* Thomas Schuetz (changed for C code generator)
*
*******************************************************************************/
/*
collection of convenience functions for code generation
*/
package org.eclipse.etrice.generator.c.gen
import com.google.inject.Inject
import com.google.inject.Singleton
import org.eclipse.etrice.core.room.Message
import org.eclipse.etrice.core.room.PrimitiveType
import org.eclipse.etrice.core.room.RoomClass
import org.eclipse.etrice.core.room.LiteralType
import org.eclipse.etrice.generator.generic.ILanguageExtension
import java.util.List
import org.eclipse.xtext.util.Pair
import org.eclipse.etrice.core.room.DataType
import org.eclipse.etrice.core.room.ExternalType
import org.eclipse.etrice.core.genmodel.etricegen.IDiagnostician
import org.eclipse.etrice.core.room.DataClass
import org.eclipse.etrice.core.room.VarDecl
import org.eclipse.etrice.core.room.Attribute
import org.eclipse.etrice.generator.generic.RoomExtensions
import org.eclipse.etrice.core.etphys.eTPhys.NodeRef
import org.eclipse.etrice.core.genmodel.etricegen.SubSystemInstance
@Singleton
class CExtensions implements ILanguageExtension {
@Inject IDiagnostician diagnostician
@Inject extension RoomExtensions
override String getTypedDataDefinition(Message m) {
generateArglistAndTypedData(m.data).get(1)
}
// in C no access levels can be defined
override String accessLevelPrivate(){"static "}
override String accessLevelProtected(){"static "}
override String accessLevelPublic(){""}
override String memberAccess(){"self->"}
override String selfPointer(String classname, boolean hasArgs){
classname+
if (hasArgs)
"* self, "
else
"* self"
}
override String selfPointer(boolean hasArgs) { if (hasArgs) "self, " else "self" }
override String operationScope(String classname, boolean isDeclaration){classname+"_"}
override String memberInDeclaration(String namespace, String member) {
return namespace+"_"+member
}
override String memberInUse(String namespace, String member) {
return namespace+"_"+member
}
//**** C-Specific
/* TODO: move specific code elsewhere */
// used
def String getCHeaderFileName(RoomClass rc) {
return rc.name+".h";
}
// used
def String getCSourceFileName(RoomClass rc) {
return rc.name+".c";
}
def String getInstSourceFileName(RoomClass rc) {
return rc.name+"_Inst.h";
}
def String getDispSourceFileName(RoomClass rc) {
return rc.name+"_Disp.h";
}
// used
def String getCHeaderFileName(NodeRef nr, SubSystemInstance ssi) {
return nr.name+"_"+ssi.name+".h";
}
def String getCSourceFileName(NodeRef nr, SubSystemInstance ssi) {
return nr.name+"_"+ssi.name+".c";
}
def String getInstSourceFileName(NodeRef nr, SubSystemInstance ssi) {
return nr.name+"_"+ssi.name+"_Inst.h";
}
def String getDispSourceFileName(NodeRef nr, SubSystemInstance ssi) {
return nr.name+"_"+ssi.name+"_Disp.h";
}
def getIncludeGuardString(String filename){
'''_«filename.toUpperCase»_H_'''
}
def generateIncludeGuardBegin(String filename){'''
#ifndef «filename.getIncludeGuardString»
#define «filename.getIncludeGuardString»
'''
}
def generateIncludeGuardEnd(String filename){'''
#endif /* «filename.getIncludeGuardString» */
'''
}
override boolean usesInheritance() {
return false
}
override boolean usesPointers() {
return true
}
override String genEnumeration(String name, List<Pair<String, String>> entries) {
if (entries.empty)
return "/* empty enum not generated */"
'''
enum «name» {
«FOR entry: entries SEPARATOR ","»
«entry.first» = «entry.second»
«ENDFOR»
};
'''.toString
}
override String booleanConstant(boolean b) {
if (b) "TRUE" else "FALSE"
}
override String pointerLiteral() { "*" }
override String nullPointer() { "NULL" }
override String voidPointer() { "void*" }
override String arrayDeclaration(String type, int size, String name, boolean isRef) {
if (isRef){
type+"* "+name+"["+size+"]";
}else {
type+" "+name+"["+size+"]";
}
}
override String constructorName(String cls) {
"ctor"
}
override String destructorName(String cls) {
"dtor"
}
override String constructorReturnType() {
"void"
}
override String destructorReturnType() {
"void"
}
override String superCall(String baseClassName, String method, String args) {
""
}
override String toValueLiteral(PrimitiveType type, String value){
switch(type.targetName){
// TODO JH: char* with length 1
case type.targetName.equals("char") && value.length == 1:
"'"+value+"'"
case type.type == LiteralType::CHAR:
"\""+value+"\""
case value.contains(','): {
var singleValues = value.replace('{', '').replace('}', '').trim.split(',')
'''{ «FOR v: singleValues SEPARATOR ', '»«toValueLiteral(type, v.trim)»«ENDFOR» }'''.toString
}
case "boolean":
value.toUpperCase
default:
value
}
}
override String defaultValue(DataType dt) {
switch dt{
PrimitiveType:
toValueLiteral(dt, dt.defaultValueLiteral)
ExternalType:{
if (dt.defaultValueLiteral != null )
return dt.getDefaultValueLiteral
diagnostician.error("cannot initialize external type "+dt.name, dt.eContainer, dt.eContainingFeature)
"cannot instantiate external data type "+dt.name
}
DataClass:
'''
{
«FOR att : dt.allAttributes SEPARATOR ","»
«att.initializationWithDefaultValues»
«ENDFOR»
}
'''
}
}
override initializationWithDefaultValues(DataType dt, int size) {
val dv = dt.defaultValue
dv.initializer(size)
}
def private initializer(String dv, int size) {
if (size>1) {
var res = "{"
var i = 0
while (i<size) {
res = res + dv
i = i+1
if (i<size)
res = res + ","
}
res+"}"
}
else
dv
}
def initializationWithDefaultValues(Attribute att) {
val dv = att.defaultValueLiteral
if (dv!=null) {
if (dv.startsWith("{"))
dv
else
dv.initializer(att.size)
}
else if (att.refType.ref) {
"NULL".initializer(att.size)
}
else
att.refType.type.initializationWithDefaultValues(att.size)
}
override generateArglistAndTypedData(VarDecl data) {
if (data==null)
return newArrayList("", "", "")
var typeName = if (data.getRefType().getType() instanceof PrimitiveType)
(data.getRefType().getType() as PrimitiveType).getTargetName()
else
data.getRefType().getType().getName()
var castTypeName = if (data.getRefType().getType() instanceof PrimitiveType) {
val ct = (data.getRefType().getType() as PrimitiveType).getCastName()
if (ct!=null && !ct.isEmpty())
ct
else
typeName
}
else
typeName
castTypeName = castTypeName+"*"
var deRef = "*"
val isRef = data.getRefType().isRef()
val isPrim = (data.getRefType().getType() instanceof PrimitiveType)
if (isRef) {
typeName = typeName+"*"
castTypeName = castTypeName+"*"
}
else {
if (!isPrim) {
typeName = typeName+"*"
deRef = ""
}
}
val typedData = typeName+" "+data.getName() + " = "+deRef+"(("+castTypeName+") generic_data);\n"
val dataArg = ", "+data.getName()
val typedArgList = ", "+typeName+" "+data.getName()
return newArrayList(dataArg, typedData, typedArgList);
}
}
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