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GenC.cs
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GenC.cs
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// GenC.cs - C code generator
//
// Copyright (C) 2011-2014 Piotr Fusik
//
// This file is part of CiTo, see http://cito.sourceforge.net
//
// CiTo is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// CiTo is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with CiTo. If not, see http://www.gnu.org/licenses/
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
namespace Foxoft.Ci
{
public class GenC : SourceGenerator
{
CiMethod CurrentMethod;
void Write(CiEnum enu)
{
WriteLine();
Write(enu.Documentation);
Write("typedef enum ");
OpenBlock();
bool first = true;
foreach (CiEnumValue value in enu.Values) {
if (first)
first = false;
else
WriteLine(",");
Write(value.Documentation);
Write(enu.Name);
Write('_');
WriteUppercaseWithUnderscores(value.Name);
}
WriteLine();
CloseBlock();
Write(enu.Name);
WriteLine(";");
}
static void InsertPtr(StringBuilder sb, PtrWritability wr)
{
sb.Insert(0, '*');
if (wr != PtrWritability.ReadWrite)
sb.Insert(0, "const ");
}
protected virtual string ToString(CiType type)
{
return type.Name;
}
string ToString(CiType type, string s)
{
StringBuilder sb = new StringBuilder(s);
bool needParens = false;
while (type is CiArrayType) {
CiArrayStorageType stg = type as CiArrayStorageType;
if (stg != null) {
if (needParens) {
sb.Insert(0, '(');
sb.Append(')');
needParens = false;
}
sb.Append('[');
sb.Append(stg.Length);
sb.Append(']');
}
else {
InsertPtr(sb, ((CiArrayPtrType) type).Writability);
needParens = true;
}
type = ((CiArrayType) type).ElementType;
}
if (type is CiByteType)
sb.Insert(0, "unsigned char ");
else if (type is CiStringPtrType)
sb.Insert(0, "const char *");
else if (type is CiStringStorageType) {
if (needParens) {
sb.Insert(0, '(');
sb.Append(')');
}
sb.Insert(0, "char ");
sb.Append('[');
sb.Append(((CiStringStorageType) type).Length + 1);
sb.Append(']');
}
else {
if (type is CiClassPtrType)
InsertPtr(sb, ((CiClassPtrType) type).Writability);
sb.Insert(0, ' ');
sb.Insert(0, ToString(type));
}
return sb.ToString();
}
protected void Write(CiType type, string name)
{
Write(ToString(type, name));
}
void Write(CiField field)
{
Write(field.Documentation);
Write(field.Type, ToCamelCase(field.Name));
WriteLine(";");
}
void Write(CiClass klass, CiConst konst)
{
WriteLine();
Write(konst.Documentation);
if (konst.Type is CiArrayStorageType) {
CiArrayStorageType stg = (CiArrayStorageType) konst.Type;
Write("extern const ");
Write(konst.Type, klass.Name + "_" + konst.Name);
WriteLine(";");
Write("#define ");
Write(klass.Name);
Write('_');
Write(konst.Name);
Write("_LENGTH ");
Write(stg.Length);
}
else {
Write("#define ");
Write(klass.Name);
Write('_');
WriteUppercaseWithUnderscores(konst.Name);
Write(" ");
WriteConst(konst.Value);
}
WriteLine();
}
protected override CiPriority GetPriority(CiExpr expr)
{
if (expr is CiPropertyAccess) {
CiProperty prop = ((CiPropertyAccess) expr).Property;
if (prop == CiLibrary.SByteProperty || prop == CiLibrary.LowByteProperty)
return CiPriority.Prefix;
}
else if (expr is CiCoercion) {
CiCoercion c = (CiCoercion) expr;
if (c.ResultType is CiClassType)
return c.ResultType is CiClassPtrType ? CiPriority.Prefix : CiPriority.Postfix;
}
return base.GetPriority(expr);
}
protected override void WriteConst(object value)
{
if (value is CiEnumValue) {
CiEnumValue ev = (CiEnumValue) value;
Write(ev.Type.Name);
Write('_');
WriteUppercaseWithUnderscores(ev.Name);
}
else if (value == null)
Write("NULL");
else
base.WriteConst(value);
}
protected override void WriteName(CiConst konst)
{
if (konst.Class != null) {
Write(konst.Class.Name);
Write('_');
Write(konst.Name);
}
else
Write(konst.Name);
}
protected override void Write(CiVarAccess expr)
{
if (expr.Var == this.CurrentMethod.This)
Write("self");
else
base.Write(expr);
}
void StartFieldAccess(CiExpr expr)
{
WriteChild(CiPriority.Postfix, expr);
if (expr.Type is CiClassPtrType)
Write("->");
else
Write('.');
}
protected override void Write(CiFieldAccess expr)
{
StartFieldAccess(expr.Obj);
WriteCamelCase(expr.Field.Name);
}
protected override void Write(CiPropertyAccess expr)
{
if (expr.Property == CiLibrary.SByteProperty) {
Write("(signed char) ");
WriteChild(expr, expr.Obj);
}
else if (expr.Property == CiLibrary.LowByteProperty) {
Write("(unsigned char) ");
WriteChild(expr, expr.Obj);
}
else if (expr.Property == CiLibrary.StringLengthProperty) {
Write("(int) strlen(");
WriteChild(expr, expr.Obj);
Write(')');
}
else
throw new ArgumentException(expr.Property.Name);
}
protected void WriteClearArray(CiExpr expr)
{
Write("memset(");
Write(expr);
Write(", 0, sizeof(");
Write(expr);
Write("))");
}
protected override void Write(CiMethodCall expr)
{
if (expr.Method == CiLibrary.MulDivMethod) {
Write("(int) ((long long int) ");
WriteMulDiv(CiPriority.Prefix, expr);
}
else if (expr.Method == CiLibrary.CharAtMethod) {
Write(expr.Obj);
Write('[');
Write(expr.Arguments[0]);
Write(']');
}
else if (expr.Method == CiLibrary.SubstringMethod) {
// TODO
throw new ArgumentException("Substring");
}
else if (expr.Method == CiLibrary.ArrayCopyToMethod) {
Write("memcpy(");
WriteSum(expr.Arguments[1], expr.Arguments[2]);
Write(", ");
WriteSum(expr.Obj, expr.Arguments[0]);
Write(", ");
Write(expr.Arguments[3]);
Write(')');
}
else if (expr.Method == CiLibrary.ArrayToStringMethod) {
// TODO
throw new ArgumentException("Array.ToString");
}
else if (expr.Method == CiLibrary.ArrayStorageClearMethod) {
WriteClearArray(expr.Obj);
}
else {
bool first = true;
if (expr.Method != null) {
switch (expr.Method.CallType) {
case CiCallType.Static:
Write(expr.Method.Class.Name);
Write('_');
Write(expr.Method.Name);
Write('(');
break;
case CiCallType.Normal:
Write(expr.Method.Class.Name);
Write('_');
Write(expr.Method.Name);
Write('(');
Write(expr.Obj);
first = false;
break;
case CiCallType.Abstract:
case CiCallType.Virtual:
case CiCallType.Override:
CiClass objClass = ((CiClassType) expr.Obj.Type).Class;
CiClass ptrClass = GetVtblPtrClass(expr.Method.Class);
CiClass defClass;
for (defClass = expr.Method.Class; !AddsVirtualMethod(defClass, expr.Method.Name); defClass = defClass.BaseClass)
;
if (defClass != ptrClass) {
Write("((const ");
Write(defClass.Name);
Write("Vtbl *) ");
}
StartFieldAccess(expr.Obj);
for (CiClass baseClass = objClass; baseClass != ptrClass; baseClass = baseClass.BaseClass)
Write("base.");
Write("vtbl");
if (defClass != ptrClass)
Write(')');
Write("->");
WriteCamelCase(expr.Method.Name);
Write('(');
if (objClass == defClass)
Write(expr.Obj);
else {
Write('&');
StartFieldAccess(expr.Obj);
Write("base");
for (CiClass baseClass = objClass.BaseClass; baseClass != defClass; baseClass = baseClass.BaseClass)
Write(".base");
}
first = false;
break;
}
}
else {
// delegate
Write(expr.Obj);
Write(".func(");
Write(expr.Obj);
Write(".obj");
first = false;
}
foreach (CiExpr arg in expr.Arguments)
{
if (first)
first = false;
else
Write(", ");
Write(arg);
}
Write(')');
// if (expr.Method.Throws) Write(" /* throws */");
}
}
void WriteChildWithSuggestedParentheses(CiBinaryExpr parent, CiExpr child, CiPriority suggestedParentPriority, bool assoc)
{
if (assoc && GetPriority(parent) == GetPriority(child))
Write(child);
else
WriteChild(suggestedParentPriority, child);
}
protected override void Write(CiBinaryExpr expr)
{
switch (expr.Op) {
case CiToken.Equal:
case CiToken.NotEqual:
case CiToken.Greater:
if (expr.Left.Type is CiStringType && !expr.Left.IsConst(null) && !expr.Right.IsConst(null)) {
Write("strcmp(");
Write(expr.Left);
Write(", ");
Write(expr.Right);
Write(')');
WriteOp(expr);
Write('0');
break;
}
// optimize str.Length == 0, str.Length != 0, str.Length > 0
CiPropertyAccess pa = expr.Left as CiPropertyAccess;
if (pa != null && pa.Property == CiLibrary.StringLengthProperty) {
CiConstExpr ce = expr.Right as CiConstExpr;
if (ce != null && 0.Equals(ce.Value)) {
WriteChild(CiPriority.Postfix, pa.Obj);
Write(expr.Op == CiToken.Equal ? "[0] == '\\0'" : "[0] != '\\0'");
break;
}
}
base.Write(expr);
break;
case CiToken.ShiftLeft:
case CiToken.ShiftRight:
WriteChildWithSuggestedParentheses(expr, expr.Left, CiPriority.Multiplicative, true);
WriteOp(expr);
WriteChildWithSuggestedParentheses(expr, expr.Right, CiPriority.Multiplicative, false);
break;
case CiToken.And:
case CiToken.Or:
case CiToken.Xor:
WriteChildWithSuggestedParentheses(expr, expr.Left, CiPriority.Multiplicative, true);
WriteOp(expr);
WriteChildWithSuggestedParentheses(expr, expr.Right, CiPriority.Multiplicative, true);
break;
case CiToken.CondOr:
WriteChildWithSuggestedParentheses(expr, expr.Left, CiPriority.Or, true);
Write(" || ");
WriteChildWithSuggestedParentheses(expr, expr.Right, CiPriority.Or, true);
break;
default:
base.Write(expr);
break;
}
}
protected override void WriteNew(CiType type)
{
CiClassStorageType classType = type as CiClassStorageType;
if (classType != null) {
Write(classType.Class.Name);
Write("_New()");
}
else {
CiArrayStorageType arrayType = (CiArrayStorageType) type;
Write('(');
Write(arrayType.ElementType, "*");
Write(") malloc(");
WriteChild(CiPriority.Multiplicative, arrayType.LengthExpr);
Write(" * sizeof(");
Write(arrayType.ElementType, string.Empty);
Write("))");
}
}
protected override void Write(CiCoercion expr)
{
if (expr.ResultType is CiClassType) {
if (expr.ResultType is CiClassPtrType)
Write('&');
WriteChild(expr, (CiExpr) expr.Inner); // TODO: Assign
CiClass klass = ((CiClassType) expr.Inner.Type).Class;
if (expr.Inner.Type is CiClassPtrType) {
Write("->base");
klass = klass.BaseClass;
}
CiClass resultClass = ((CiClassType) expr.ResultType).Class;
for (; klass != resultClass; klass = klass.BaseClass)
Write(".base");
}
else
base.Write(expr);
}
bool TryWriteCallAndReturn(ICiStatement[] statements, int lastCallIndex, CiExpr returnValue)
{
CiMethodCall call = statements[lastCallIndex] as CiMethodCall;
if (call == null || !call.Method.Throws)
return false;
Write(statements, lastCallIndex);
Write("return ");
Write(call);
object errorReturnValue = call.Method.ErrorReturnValue;
if (!false.Equals(errorReturnValue)) {
Write(" != ");
WriteConst(errorReturnValue);
}
if (returnValue != null) {
Write(" ? ");
Write(returnValue);
Write(" : ");
WriteConst(this.CurrentMethod.ErrorReturnValue);
}
WriteLine(";");
return true;
}
protected override void Write(ICiStatement[] statements)
{
int i = statements.Length - 2;
if (i >= 0) {
CiReturn ret = statements[i + 1] as CiReturn;
if (ret != null && TryWriteCallAndReturn(statements, i, ret.Value))
return;
}
base.Write(statements);
}
protected virtual void StartBlock(ICiStatement[] statements)
{
}
void WriteChild(CiMaybeAssign expr)
{
if (expr is CiMethodCall)
Write((CiMethodCall) expr);
else {
Write('(');
base.Visit((CiAssign) expr);
Write(')');
}
}
void CheckAndThrow(CiMaybeAssign expr, object errorReturnValue)
{
Write("if (");
if (false.Equals(errorReturnValue)) {
Write('!');
WriteChild(expr);
}
else {
WriteChild(expr);
Write(" == ");
WriteConst(errorReturnValue);
}
WriteLine(")");
this.Indent++;
Write("return ");
WriteConst(this.CurrentMethod.ErrorReturnValue);
this.Indent--;
}
static bool Throws(CiExpr expr)
{
CiMethodCall call = expr as CiMethodCall;
return call != null && call.Method != null && call.Method.Throws;
}
public override void Visit(CiExpr expr)
{
CiMethodCall call = expr as CiMethodCall;
if (call != null && call.Method != null && call.Method.Throws)
CheckAndThrow(call, call.Method.ErrorReturnValue);
else
base.Visit(expr);
}
protected static bool IsInlineVar(CiVar def)
{
if (def.Type is CiClassStorageType) {
CiClass klass = ((CiClassStorageType) def.Type).Class;
return !klass.Constructs;
}
if (def.InitialValue == null)
return true;
if (def.Type is CiArrayStorageType)
return false;
if (def.Type is CiStringStorageType)
return def.InitialValue is CiConstExpr;
if (Throws(def.InitialValue))
return false;
return true;
}
protected void WriteConstruct(CiClass klass, CiVar stmt)
{
Write(klass.Name);
Write("_Construct(&");
WriteCamelCase(stmt.Name);
if (HasVirtualMethods(klass))
Write(", NULL");
Write(')');
}
public override void Visit(CiVar stmt)
{
Write(stmt.Type, stmt.Name);
if (stmt.Type is CiClassStorageType) {
CiClass klass = ((CiClassStorageType) stmt.Type).Class;
if (klass.Constructs) {
WriteLine(";");
WriteConstruct(klass, stmt);
}
}
else if (stmt.InitialValue != null) {
if (stmt.Type is CiArrayStorageType) {
WriteLine(";");
WriteClearArray(new CiVarAccess { Var = stmt });
}
else if (IsInlineVar(stmt)) {
Write(" = ");
Write(stmt.InitialValue);
}
else {
WriteLine(";");
Visit(new CiAssign {
Target = new CiVarAccess { Var = stmt },
Op = CiToken.Assign,
Source = stmt.InitialValue
});
}
}
}
public override void Visit(CiAssign assign)
{
if (assign.Target.Type is CiStringStorageType) {
if (assign.Op == CiToken.Assign) {
if (assign.Source is CiMethodCall) {
CiMethodCall mc = (CiMethodCall) assign.Source;
if (mc.Method == CiLibrary.SubstringMethod
|| mc.Method == CiLibrary.ArrayToStringMethod) {
// TODO: make sure no side effects in mc.Arguments[1]
Write("((char *) memcpy(");
Write(assign.Target);
Write(", ");
WriteSum(mc.Obj, mc.Arguments[0]);
Write(", ");
Write(mc.Arguments[1]);
Write("))[");
Write(mc.Arguments[1]);
Write("] = '\\0'");
return;
}
}
if (assign.Source is CiConstExpr) {
string s = ((CiConstExpr) assign.Source).Value as string;
if (s != null && s.Length == 0) {
Write(assign.Target);
Write("[0] = '\\0'");
return;
}
}
Write("strcpy(");
Write(assign.Target);
Write(", ");
// TODO: not an assignment
Write((CiExpr) assign.Source);
Write(')');
return;
}
if (assign.Op == CiToken.AddAssign) {
Write("strcat(");
Write(assign.Target);
Write(", ");
// TODO: not an assignment
Write((CiExpr) assign.Source);
Write(')');
return;
}
}
CiMethodCall call = assign.Source as CiMethodCall;
if (call != null && call.Method != null && call.Method.Throws)
CheckAndThrow(assign, call.Method.ErrorReturnValue);
else
base.Visit(assign);
}
public override void Visit(CiDelete stmt)
{
Write("free(");
Write(stmt.Expr);
WriteLine(");");
}
public override void Visit(CiConst stmt)
{
if (stmt.Type is CiArrayType) {
Write("static const ");
Write(stmt.Type, stmt.Name);
Write(" = ");
WriteConst(stmt.Value);
WriteLine(";");
}
}
protected override void WriteIfOnTrue(CiIf stmt)
{
if (stmt.OnFalse != null) {
// avoid:
// if (c)
// stmtThatThrows; // -> if (method() == ERROR_VALUE) return ERROR_VALUE;
// else // mismatched if
// stmt;
CiMethodCall call;
CiAssign assign = stmt.OnTrue as CiAssign;
if (assign != null)
call = assign.Source as CiMethodCall;
else
call = stmt.OnTrue as CiMethodCall;
if (call != null && call.Method != null && call.Method.Throws) {
Write(' ');
OpenBlock();
base.WriteIfOnTrue(stmt);
CloseBlock();
return;
}
}
base.WriteIfOnTrue(stmt);
}
void WriteReturnTrue()
{
Write("return ");
WriteConst(true);
WriteLine(";");
}
public override void Visit(CiReturn stmt)
{
if (false.Equals(this.CurrentMethod.ErrorReturnValue))
WriteReturnTrue();
else
base.Visit(stmt);
}
protected override void StartCase(ICiStatement stmt)
{
// prevent "error: a label can only be part of a statement and a declaration is not a statement"
if (stmt is CiVar)
WriteLine(";");
}
public override void Visit(CiThrow stmt)
{
Write("return ");
WriteConst(this.CurrentMethod.ErrorReturnValue);
WriteLine(";");
}
void WriteSignature(CiMethod method)
{
if (method.Visibility != CiVisibility.Public)
Write("static ");
var paramz = method.Signature.Params.Select(param => ToString(param.Type, param.Name));
if (method.CallType != CiCallType.Static)
paramz = new string[1] { ToString(method.This.Type, "self") }.Concat(paramz);
string s = paramz.Any() ? string.Join(", ", paramz.ToArray()) : "void";
s = method.Class.Name + "_" + method.Name + "(" + s + ")";
CiType type = method.Signature.ReturnType;
if (method.Throws && type == CiType.Void)
type = CiBoolType.Value;
Write(type, s);
}
void Write(CiMethod method)
{
if (method.Visibility == CiVisibility.Dead || method.CallType == CiCallType.Abstract)
return;
WriteLine();
this.CurrentMethod = method;
WriteSignature(method);
WriteLine();
OpenBlock();
ICiStatement[] statements = method.Body.Statements;
StartBlock(statements);
if (method.Throws && method.Signature.ReturnType == CiType.Void && method.Body.CompletesNormally) {
if (!TryWriteCallAndReturn(statements, statements.Length - 1, null)) {
Write(statements);
WriteReturnTrue();
}
}
else
Write(statements);
CloseBlock();
this.CurrentMethod = null;
}
void WriteConstructorSignature(CiClass klass)
{
Write("static void ");
Write(klass.Name);
Write("_Construct(");
Write(klass.Name);
Write(" *self");
if (HasVirtualMethods(klass)) {
Write(", const ");
Write(GetVtblPtrClass(klass).Name);
Write("Vtbl *vtbl");
}
Write(')');
}
void WriteNewSignature(CiClass klass)
{
Write(klass.Name);
Write(" *");
Write(klass.Name);
Write("_New(void)");
}
void WriteDeleteSignature(CiClass klass)
{
Write("void ");
Write(klass.Name);
Write("_Delete(");
Write(klass.Name);
Write(" *self)");
}
static void ForEachStorageField(CiClass klass, Action<CiField, CiClass> action)
{
foreach (CiSymbol member in klass.Members) {
CiField field = member as CiField;
if (field != null) {
CiClass storageClass = field.Type.StorageClass;
if (storageClass != null)
action(field, storageClass);
}
}
}
static bool HasCStruct(CiClass klass)
{
return klass.BaseClass != null || klass.HasFields || AddsVirtualMethods(klass);
}
void WriteNew(CiClass klass)
{
WriteNewSignature(klass);
WriteLine();
OpenBlock();
Write(klass.Name);
Write(" *self = (");
Write(klass.Name);
Write(" *) malloc(sizeof(");
Write(klass.Name);
WriteLine("));");
if (klass.Constructs) {
WriteLine("if (self != NULL)");
this.Indent++;
Write(klass.Name);
Write("_Construct(self");
if (HasVirtualMethods(klass))
Write(", NULL");
WriteLine(");");
this.Indent--;
}
WriteLine("return self;");
CloseBlock();
}
void WriteConstructorNewDelete(CiClass klass)
{
if (klass.Constructs) {
WriteLine();
this.CurrentMethod = klass.Constructor;
WriteConstructorSignature(klass);
WriteLine();
OpenBlock();
if (klass.Constructor != null)
StartBlock(klass.Constructor.Body.Statements);
CiClass ptrClass = GetVtblPtrClass(klass);
if (HasVtblValue(klass)) {
WriteLine("if (vtbl == NULL)");
this.Indent++;
Write("vtbl = ");
CiClass structClass = GetVtblStructClass(klass);
if (structClass != ptrClass) {
Write("(const ");
Write(ptrClass.Name);
Write("Vtbl *) ");
}
Write("&CiVtbl_");
Write(klass.Name);
WriteLine(";");
this.Indent--;
}
if (ptrClass == klass)
WriteLine("self->vtbl = vtbl;");
if (klass.BaseClass != null && klass.BaseClass.Constructs) {
Write(klass.BaseClass.Name);
Write("_Construct(&self->base");
if (HasVirtualMethods(klass.BaseClass))
Write(", vtbl");
WriteLine(");");
}
ForEachStorageField(klass, (field, fieldClass) => {
if (fieldClass.Constructs) {
Write(fieldClass.Name);
Write("_Construct(&self->");
WriteCamelCase(field.Name);
if (HasVirtualMethods(fieldClass))
Write(", NULL");
WriteLine(");");
}
});
if (klass.Constructor != null)
Write(klass.Constructor.Body.Statements);
CloseBlock();
this.CurrentMethod = null;
}
if (!klass.IsAbstract && HasCStruct(klass)) {
if (klass.Visibility == CiVisibility.Public) {
WriteLine();
WriteNew(klass);
WriteLine();
WriteDeleteSignature(klass);
WriteLine();
OpenBlock();
WriteLine("free(self);");
CloseBlock();
}
else if (klass.IsAllocated) {
WriteLine();
Write("static ");
WriteNew(klass);
}
}
}
void WriteTypedef(CiClass klass)
{
klass.WriteStatus = CiWriteStatus.NotYet;
klass.HasFields = klass.Members.Any(member => member is CiField);
bool klassHasInstanceMethods = klass.Members.Any(member => member is CiMethod && ((CiMethod) member).CallType != CiCallType.Static);
if (klass.BaseClass != null || klass.HasFields || klassHasInstanceMethods) {
Write("typedef struct ");
Write(klass.Name);
Write(' ');
Write(klass.Name);
WriteLine(";");
}
}
void Write(CiDelegate del)
{
if (del.WriteStatus == CiWriteStatus.Done)
return;
if (del.WriteStatus == CiWriteStatus.InProgress)
throw new ResolveException("Circular dependency for delegate {0}", del.Name);
del.WriteStatus = CiWriteStatus.InProgress;
foreach (CiParam param in del.Params) {
CiDelegate paramDel = param.Type as CiDelegate;
if (paramDel != null)
Write(paramDel);
}
del.WriteStatus = CiWriteStatus.Done;
WriteLine();
Write(del.Documentation);
WriteLine("typedef struct ");
OpenBlock();
WriteLine("void *obj;");
string[] paramz = del.Params.Select(param => ", " + ToString(param.Type, param.Name)).ToArray();
string s = "(*func)(void *obj" + string.Concat(paramz) + ")";
Write(del.ReturnType, s);
WriteLine(";");
CloseBlock();
Write(del.Name);
WriteLine(";");
}
void WriteTypedefs(CiProgram prog, CiVisibility visibility)
{
foreach (CiSymbol symbol in prog.Globals) {
if (symbol.Visibility == visibility) {
if (symbol is CiEnum)
Write((CiEnum) symbol);
else if (symbol is CiClass)
WriteTypedef((CiClass) symbol);
else if (symbol is CiDelegate)
((CiDelegate) symbol).WriteStatus = CiWriteStatus.NotYet;
}
}
foreach (CiSymbol symbol in prog.Globals)
if (symbol.Visibility == visibility && symbol is CiDelegate)
Write((CiDelegate) symbol);
}
static bool AddsVirtualMethods(CiClass klass)
{
return klass.Members.OfType<CiMethod>().Any(
method => method.CallType == CiCallType.Abstract || method.CallType == CiCallType.Virtual);
}
static CiClass GetVtblStructClass(CiClass klass)
{
while (!AddsVirtualMethods(klass))
klass = klass.BaseClass;
return klass;
}
static CiClass GetVtblPtrClass(CiClass klass)
{
CiClass result = null;
do {
if (AddsVirtualMethods(klass))
result = klass;
klass = klass.BaseClass;
} while (klass != null);
return result;
}
static bool HasVirtualMethods(CiClass klass)
{
// == return EnumVirtualMethods(klass).Any();
while (!AddsVirtualMethods(klass)) {
klass = klass.BaseClass;
if (klass == null)
return false;
}
return true;
}
static IEnumerable<CiMethod> EnumVirtualMethods(CiClass klass)
{
IEnumerable<CiMethod> myMethods = klass.Members.OfType<CiMethod>().Where(
method => method.CallType == CiCallType.Abstract || method.CallType == CiCallType.Virtual);
if (klass.BaseClass != null)
return EnumVirtualMethods(klass.BaseClass).Concat(myMethods);
else
return myMethods;
}
static bool AddsVirtualMethod(CiClass klass, string methodName)