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PyrParseNode.cpp
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PyrParseNode.cpp
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/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "SCBase.h"
#include "PyrParseNode.h"
#include "PyrLexer.h"
#include "PyrKernel.h"
#include "PyrListPrim.h"
#include "PyrSymbolTable.h"
#include "Opcodes.h"
#include "PyrKernelProto.h"
#include "PyrObjectProto.h"
#include "GC.h"
#include <new>
#include <string>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include "InitAlloc.h"
#include "PredefinedSymbols.h"
#include "SimpleStack.h"
#include "PyrPrimitive.h"
#include "SC_Win32Utils.h"
AdvancingAllocPool gParseNodePool;
PyrSymbol *gSpecialUnarySelectors[opNumUnarySelectors];
PyrSymbol *gSpecialBinarySelectors[opNumBinarySelectors];
PyrSymbol *gSpecialSelectors[opmNumSpecialSelectors];
PyrSymbol* gSpecialClasses[op_NumSpecialClasses];
PyrSlot gSpecialValues[svNumSpecialValues];
PyrParseNode* gRootParseNode;
int gParserResult;
int conjureConstantIndex(PyrParseNode *node, PyrBlock* func, PyrSlot *slot);
void compilePushConstant(PyrParseNode* node, PyrSlot *slot);
PyrClass *gCurrentClass = NULL;
PyrClass *gCurrentMetaClass = NULL;
PyrClass *gCompilingClass = NULL;
PyrMethod *gCompilingMethod = NULL;
PyrBlock *gCompilingBlock = NULL;
PyrBlock *gPartiallyAppliedFunction = NULL;
bool gIsTailCodeBranch = false;
bool gTailIsMethodReturn = false;
int gFunctionHighestExternalRef = 1;
bool gFunctionCantBeClosed = true;
#if TAILCALLOPTIMIZE
bool gGenerateTailCallByteCodes = true;
#else
bool gGenerateTailCallByteCodes = false;
#endif
long gInliningLevel;
int compileErrors = 0;
int numOverwrites = 0;
std::string overwriteMsg;
extern bool compilingCmdLine;
extern int errLineOffset, errCharPosOffset;
bool gPostInlineWarnings = false;
const char* nodename[] = {
"ClassNode",
"ClassExtNode",
"MethodNode",
"BlockNode",
"SlotNode",
/* variable declarations */
"VarListNode",
"VarDefNode",
"DynDictNode",
"DynListNode",
"LitListNode",
"LitDictNode",
"StaticVarListNode",
"InstVarListNode",
"PoolVarListNode",
"ArgListNode",
"SlotDefNode",
/* selectors */
"LiteralNode",
/* code */
"PushLitNode",
"PushNameNode",
"PushKeyArgNode",
"CallNode",
"BinopCallNode",
"DropNode",
"AssignNode",
"MultiAssignNode",
"MultiAssignVarListNode",
"SetterNode",
"CurryArgNode",
"ReturnNode",
"BlockReturnNode"
};
void compileTail()
{
if (gGenerateTailCallByteCodes && gIsTailCodeBranch)
{
//if (gCompilingClass && gCompilingMethod) post("tail call %s:%s ismethod %d\n",
// slotRawSymbol(&gCompilingClass->name)->name, slotRawSymbol(&gCompilingMethod->name)->name, gTailIsMethodReturn);
if (gTailIsMethodReturn)
compileByte(255);
else
compileByte(176);
}
}
PyrGC* compileGC();
PyrGC* compileGC()
{
return gCompilingVMGlobals ? gCompilingVMGlobals->gc : 0;
}
void initParser()
{
compileErrors = 0;
numOverwrites = 0;
overwriteMsg.clear();
}
void finiParser()
{
}
void initParseNodes()
{
}
void initParserPool()
{
//postfl("initPool gParseNodePool pyr_pool_compile\n");
gParseNodePool.Init(pyr_pool_compile, 32000, 32000, 2000);
}
void freeParserPool()
{
//postfl("freePool gParseNodePool pyr_pool_compile\n");
gParseNodePool.FreeAll();
}
PyrParseNode::PyrParseNode(int inClassNo)
{
mClassno = inClassNo;
mNext = 0;
mTail = this;
mCharno = ::charno;
mLineno = ::lineno;
mParens = 0;
}
void compileNodeList(PyrParseNode *node, bool onTailBranch)
{
PyrSlot dummy;
//postfl("->compileNodeList\n");
for (; node; node = node->mNext) {
//postfl("-->compileNodeList %p\n", node);
COMPILENODE(node, &dummy, onTailBranch);
//postfl("<--compileNodeList %p\n", node);
}
//postfl("<-compileNodeList\n");
}
void nodePostErrorLine(PyrParseNode* node)
{
postErrorLine(node->mLineno, linestarts[node->mLineno], node->mCharno);
}
PyrPushNameNode* newPyrPushNameNode(PyrSlotNode *slotNode)
{
slotNode->mClassno = pn_PushNameNode;
return (PyrPushNameNode*)slotNode;
}
void compilePushVar(PyrParseNode *node, PyrSymbol *varName)
{
int level, index, vindex, varType;
PyrBlock *tempfunc;
PyrClass *classobj;
//postfl("compilePushVar\n");
classobj = gCompilingClass;
if (varName->name[0] >= 'A' && varName->name[0] <= 'Z') {
if (compilingCmdLine && varName->u.classobj == NULL) {
error("Class not defined.\n");
nodePostErrorLine(node);
compileErrors++;
} else {
if (findSpecialClassName(varName, &index)) {
compileOpcode(opExtended, opPushSpecialValue); // special op for pushing a class
compileByte(index);
} else {
PyrSlot slot;
SetSymbol(&slot, varName);
index = conjureLiteralSlotIndex(node, gCompilingBlock, &slot);
compileOpcode(opExtended, opExtended); // special op for pushing a class
compileByte(index);
}
}
} else if (varName == s_this || varName == s_super) {
gFunctionCantBeClosed = true;
compileOpcode(opPushSpecialValue, opsvSelf);
} else if (varName == s_true) {
compileOpcode(opPushSpecialValue, opsvTrue);
} else if (varName == s_false) {
compileOpcode(opPushSpecialValue, opsvFalse);
} else if (varName == s_nil) {
compileOpcode(opPushSpecialValue, opsvNil);
} else if (findVarName(gCompilingBlock, &classobj, varName,
&varType, &level, &index, &tempfunc)) {
switch (varType) {
case varInst :
compileOpcode(opPushInstVar, index);
break;
case varClass : {
index += slotRawInt(&classobj->classVarIndex);
if (index < 4096) {
compileByte((opPushClassVar<<4) | ((index >> 8) & 15));
compileByte(index & 255);
} else {
compileByte(opPushClassVar);
compileByte((index >> 8) & 255);
compileByte(index & 255);
}
} break;
case varConst : {
PyrSlot *slot = slotRawObject(&classobj->constValues)->slots + index;
compilePushConstant(node, slot);
} break;
case varTemp :
vindex = index;
if (level == 0) {
compileOpcode(opPushTempZeroVar, vindex);
} else if (level < 8) {
compileOpcode(opPushTempVar, level);
compileByte(vindex);
} else {
compileByte(opPushTempVar);
compileByte(level);
compileByte(vindex);
}
break;
case varPseudo :
compileOpcode(opExtended, opSpecialOpcode);
compileByte(index);
break;
}
} else {
error("Variable '%s' not defined.\n", varName->name);
nodePostErrorLine(node);
compileErrors++;
//Debugger();
}
}
PyrCurryArgNode* newPyrCurryArgNode()
{
PyrCurryArgNode* node = ALLOCNODE(PyrCurryArgNode);
return node;
}
void PyrCurryArgNode::compile(PyrSlot *result)
{
if (gPartiallyAppliedFunction) {
compileOpcode(opPushTempZeroVar, mArgNum);
} else {
error("found _ argument outside of a call.\n");
nodePostErrorLine((PyrParseNode*)this);
compileErrors++;
}
}
PyrSlotNode* newPyrSlotNode(PyrSlot *slot)
{
PyrSlotNode* node = ALLOCNODE(PyrSlotNode);
node->mSlot = *slot;
return node;
}
void PyrSlotNode::compile(PyrSlot *result)
{
if (mClassno == pn_LiteralNode)
compileLiteral(result);
else if (mClassno == pn_PushLitNode)
compilePushLit(result);
else if (mClassno == pn_PushNameNode)
compilePushVar((PyrParseNode*)this, slotRawSymbol(&mSlot));
else {
error("compilePyrSlotNode: shouldn't get here.\n");
dumpObjectSlot(&mSlot);
nodePostErrorLine((PyrParseNode*)this);
compileErrors++;
//Debugger();
}
}
PyrClassExtNode* newPyrClassExtNode(PyrSlotNode* className, PyrMethodNode* methods)
{
PyrClassExtNode* node = ALLOCNODE(PyrClassExtNode);
node->mClassName = className;
node->mMethods = methods;
return node;
}
void PyrClassExtNode::compile(PyrSlot *result)
{
PyrClass *classobj = slotRawSymbol(&mClassName->mSlot)->u.classobj;
if (!classobj) {
char extPath[1024];
asRelativePath(gCompilingFileSym->name, extPath);
error("Class extension for nonexistent class '%s'\n In file:'%s'\n",
slotRawSymbol(&mClassName->mSlot)->name,
extPath
);
return;
}
gCurrentClass = classobj;
gCurrentMetaClass = classobj->classptr;
compileExtNodeMethods(this);
}
void compileExtNodeMethods(PyrClassExtNode* node)
{
PyrMethodNode *method;
method = node->mMethods;
for (; method; method = (PyrMethodNode*)method->mNext) {
PyrSlot dummy;
//post("compile ext %s:%s\n",
method->mExtension = true;
compilePyrMethodNode(method, &dummy);
}
gCompilingMethod = NULL;
gCompilingBlock = NULL;
gPartiallyAppliedFunction = NULL;
gInliningLevel = 0;
}
PyrClassNode* newPyrClassNode(PyrSlotNode* className, PyrSlotNode* superClassName,
PyrVarListNode* varlists, PyrMethodNode* methods, PyrSlotNode* indexType)
{
PyrClassNode* node = ALLOCNODE(PyrClassNode);
node->mClassName = className;
node->mIndexType = indexType;
node->mSuperClassName = superClassName;
node->mVarlists = varlists;
node->mMethods = methods;
node->mVarTally[varInst] = 0;
node->mVarTally[varClass] = 0;
node->mVarTally[varTemp] = 0;
node->mVarTally[varConst] = 0;
//node->mVarTally[varPool] = 0;
return node;
}
bool compareVarDefs(PyrClassNode* node, PyrClass* classobj)
{
int numinstvars, numclassvars;
int i, xinst, xclass;
PyrVarListNode* varlist;
PyrVarDefNode *vardef;
PyrParseNode *errnode;
PyrSymbol **varNames;
bool isIntrinsic;
isIntrinsic = slotRawInt(&classobj->classFlags) & classIsIntrinsic;
numinstvars = numInstVars(classobj);
numclassvars = numClassVars(classobj);
if (numinstvars == node->mVarTally[varInst] + node->mNumSuperInstVars
&& numclassvars == node->mVarTally[varClass]) {
xclass = 0;
xinst = node->mNumSuperInstVars;
varlist = node->mVarlists;
for (; varlist; varlist = (PyrVarListNode*)varlist->mNext) {
int type = varlist->mFlags;
if (type == varInst) {
vardef = varlist->mVarDefs;
varNames = slotRawSymbolArray(&classobj->instVarNames)->symbols;
for (i=0; vardef; vardef = (PyrVarDefNode*)vardef->mNext, xinst++, ++i) {
if (slotRawSymbol(&vardef->mVarName->mSlot) != varNames[xinst]) {
errnode = (PyrParseNode*)vardef;
//post("A %s %d %d %d\n", vardef->mVarName->slotRawSymbol(&mSlot)->name,
// vardef->mVarName->slotRawSymbol(&mSlot), varNames[xinst].us, xinst);
//post("A %s %s %d\n", vardef->mVarName->slotRawSymbol(&mSlot)->name,
// varNames[xinst].us->name, xinst);
goto differExit;
}
}
} else if (type == varClass) {
vardef = varlist->mVarDefs;
varNames = slotRawSymbolArray(&classobj->classVarNames)->symbols;
for (i=0; vardef && xclass < numclassvars; vardef = (PyrVarDefNode*)vardef->mNext, xclass++, ++i) {
if (slotRawSymbol(&vardef->mVarName->mSlot) != varNames[xclass]) {
errnode = (PyrParseNode*)vardef;
//post("B %d %d %d\n", vardef->mVarName->slotRawSymbol(&mSlot), varNames[xclass].us, xclass);
goto differExit;
}
}
}
}
} else {
//post("C %d %d %d %d %d\n", numinstvars, node->mVarTally[varInst], node->mNumSuperInstVars,
// numclassvars, node->mVarTally[varClass]);
errnode = (node->mVarlists ? (PyrParseNode*)node->mVarlists : (PyrParseNode*)node->mClassName);
goto differExit;
}
return false;
differExit:
if (isIntrinsic) {
error("You may not change variable definitions of intrinsic classes.\n");
nodePostErrorLine(errnode);
compileErrors++;
}
return true;
}
void countClassVarDefs(PyrClassNode* node, int *numClassMethods, int *numInstMethods)
{
PyrVarListNode* varlist;
PyrVarDefNode *vardef;
//*numClassMethods = 0;
//*numInstMethods = 0;
node->mVarTally[varInst] = 0;
node->mVarTally[varClass] = 0;
node->mVarTally[varTemp] = 0;
node->mVarTally[varConst] = 0;
// count number of variables of each type
varlist = node->mVarlists;
for (; varlist; varlist = (PyrVarListNode*)varlist->mNext) {
int type = varlist->mFlags;
vardef = varlist->mVarDefs;
for (; vardef; vardef = (PyrVarDefNode*)vardef->mNext) {
node->mVarTally[type]++;
if (type == varClass) {
if (vardef->mFlags & rwReadOnly) {
*numClassMethods = *numClassMethods + 1;
}
if (vardef->mFlags & rwWriteOnly) {
*numClassMethods = *numClassMethods + 1;
}
} else if (type == varInst) {
if (vardef->mFlags & rwReadOnly) {
*numInstMethods = *numInstMethods + 1;
}
if (vardef->mFlags & rwWriteOnly) {
*numInstMethods = *numInstMethods + 1;
}
}
}
}
}
void countNodeMethods(PyrClassNode* node, int *numClassMethods, int *numInstMethods)
{
// count methods
PyrMethodNode *method;
//*numClassMethods = 0;
//*numInstMethods = 0;
method = node->mMethods;
for (; method; method = (PyrMethodNode*)method->mNext) {
if (method->mIsClassMethod) *numClassMethods = *numClassMethods + 1;
else *numInstMethods = *numInstMethods + 1;
}
}
void compileNodeMethods(PyrClassNode* node)
{
PyrMethodNode *method;
method = node->mMethods;
for (; method; method = (PyrMethodNode*)method->mNext) {
PyrSlot dummy;
method->mExtension = false;
compilePyrMethodNode(method, &dummy);
}
gCompilingMethod = NULL;
gCompilingBlock = NULL;
gPartiallyAppliedFunction = NULL;
gInliningLevel = 0;
}
PyrClass* getNodeSuperclass(PyrClassNode *node)
{
PyrClass *superclassobj = NULL;
// postfl("getNodeSuperclass node %d\n", node);
// postfl("getNodeSuperclass node->mSuperClassName %d\n", node->mSuperClassName);
// postfl("getNodeSuperclass node->mSuperClassName->mSlot.utag %d\n",
// node->mSuperClassName->mSlot.utag);
if (node->mSuperClassName && IsSym(&node->mSuperClassName->mSlot)) {
superclassobj = slotRawSymbol(&node->mSuperClassName->mSlot)->u.classobj;
if (superclassobj == NULL) {
error("Cannot find superclass '%s' for class '%s'\n",
slotSymString(&node->mSuperClassName->mSlot),
slotSymString(&node->mClassName->mSlot));
nodePostErrorLine((PyrParseNode*)node->mSuperClassName);
superclassobj = (PyrClass*)-1;
compileErrors++;
}
} else {
if (slotRawSymbol(&node->mClassName->mSlot) != s_object) {
superclassobj = class_object;
} // else this is object and there is no superclass
}
return superclassobj;
}
void fillClassPrototypes(PyrClassNode *node, PyrClass *classobj, PyrClass *superclassobj)
{
PyrVarListNode* varlist;
PyrVarDefNode *vardef;
PyrSlot *islot, *cslot, *kslot;
PyrSymbol **inameslot, **cnameslot, **knameslot;
PyrClass *metaclassobj;
PyrMethod *method;
PyrMethodRaw *methraw;
int instVarIndex, classVarIndex;
// copy superclass's prototype to here
if (superclassobj && NotNil(&superclassobj->iprototype)
&& slotRawObject(&superclassobj->iprototype)->size) {
memcpy(slotRawObject(&classobj->iprototype)->slots, slotRawObject(&superclassobj->iprototype)->slots,
sizeof(PyrSlot)* slotRawObject(&superclassobj->iprototype)->size);
//slotRawObject(&classobj->iprototype)->size = slotRawObject(&superclassobj->iprototype)->size;
slotRawObject(&classobj->iprototype)->size = node->mNumSuperInstVars;
memcpy(slotRawSymbolArray(&classobj->instVarNames)->symbols,
slotRawSymbolArray(&superclassobj->instVarNames)->symbols,
sizeof(PyrSymbol*)* slotRawObject(&superclassobj->instVarNames)->size);
//slotRawObject(&classobj->instVarNames)->size = slotRawObject(&superclassobj->iprototype)->size;
slotRawObject(&classobj->instVarNames)->size = node->mNumSuperInstVars;
}
// fill the class' own part of prototypes
metaclassobj = classobj->classptr;
varlist = node->mVarlists;
if (NotNil(&classobj->iprototype)) {
islot = slotRawObject(&classobj->iprototype)->slots + node->mNumSuperInstVars;
}
if (NotNil(&classobj->cprototype)) {
cslot = slotRawObject(&classobj->cprototype)->slots;
}
if (NotNil(&classobj->constValues)) {
kslot = slotRawObject(&classobj->constValues)->slots;
}
if (NotNil(&classobj->instVarNames)) {
inameslot = slotRawSymbolArray(&classobj->instVarNames)->symbols + node->mNumSuperInstVars;
}
if (NotNil(&classobj->classVarNames)) {
cnameslot = slotRawSymbolArray(&classobj->classVarNames)->symbols;
}
if (NotNil(&classobj->constNames)) {
knameslot = slotRawSymbolArray(&classobj->constNames)->symbols;
}
instVarIndex = node->mNumSuperInstVars;
classVarIndex = 0;
for (; varlist; varlist = (PyrVarListNode*)varlist->mNext) {
int type = varlist->mFlags;
switch (type) {
case varInst :
vardef = varlist->mVarDefs;
for (; vardef; vardef = (PyrVarDefNode*)vardef->mNext) {
PyrSlot litslot;
compilePyrLiteralNode((PyrLiteralNode*)vardef->mDefVal, &litslot);
*islot++ = litslot;
slotRawObject(&classobj->iprototype)->size++;
*inameslot++ = slotRawSymbol(&vardef->mVarName->mSlot);
slotRawSymbolArray(&classobj->instVarNames)->size++;
if (vardef->mFlags & rwReadOnly) {
// create getter method
method = newPyrMethod();
methraw = METHRAW(method);
methraw->unused1 = 0;
methraw->unused2 = 0;
methraw->numargs = 1;
methraw->numvars = 0;
methraw->posargs = 1;
methraw->varargs = 0;
methraw->numtemps = 1;
methraw->popSize = 0;
SetNil(&method->contextDef);
SetNil(&method->varNames);
SetObject(&method->ownerclass, classobj);
if (gCompilingFileSym) SetSymbol(&method->filenameSym, gCompilingFileSym);
SetInt(&method->charPos, linestarts[vardef->mVarName->mLineno] + errCharPosOffset);
slotCopy(&method->name, &vardef->mVarName->mSlot);
methraw->methType = methReturnInstVar;
methraw->specialIndex = instVarIndex;
addMethod(classobj, method);
}
if (vardef->mFlags & rwWriteOnly) {
char setterName[256];
PyrSymbol *setterSym;
sprintf(setterName, "%s_", slotRawSymbol(&vardef->mVarName->mSlot)->name);
//underscore = strcpy(setterName, slotRawSymbol(&vardef->mVarName->mSlot)->name);
//underscore[0] = '_';
//underscore[1] = 0;
setterSym = getsym(setterName);
// create setter method
method = newPyrMethod();
methraw = METHRAW(method);
methraw->unused1 = 0;
methraw->unused2 = 0;
methraw->numargs = 2;
methraw->numvars = 0;
methraw->posargs = 2;
methraw->varargs = 0;
methraw->numtemps = 2;
methraw->popSize = 1;
SetNil(&method->contextDef);
SetNil(&method->varNames);
SetObject(&method->ownerclass, classobj);
SetSymbol(&method->name, setterSym);
if (gCompilingFileSym) SetSymbol(&method->filenameSym, gCompilingFileSym);
SetInt(&method->charPos, linestarts[vardef->mVarName->mLineno] + errCharPosOffset);
methraw->methType = methAssignInstVar;
methraw->specialIndex = instVarIndex;
addMethod(classobj, method);
}
instVarIndex++;
}
break;
case varClass :
vardef = varlist->mVarDefs;
for (; vardef; vardef = (PyrVarDefNode*)vardef->mNext) {
PyrSlot litslot;
compilePyrLiteralNode((PyrLiteralNode*)vardef->mDefVal, &litslot);
*cslot++ = litslot;
slotRawObject(&classobj->cprototype)->size++;
*cnameslot++ = slotRawSymbol(&vardef->mVarName->mSlot);
slotRawSymbolArray(&classobj->classVarNames)->size++;
if (vardef->mFlags & rwReadOnly) {
// create getter method
method = newPyrMethod();
methraw = METHRAW(method);
methraw->unused1 = 0;
methraw->unused2 = 0;
methraw->numargs = 1;
methraw->numvars = 0;
methraw->posargs = 1;
methraw->varargs = 0;
methraw->numtemps = 1;
methraw->popSize = 0;
SetNil(&method->contextDef);
SetNil(&method->varNames);
SetObject(&method->ownerclass, metaclassobj);
slotCopy(&method->name, &vardef->mVarName->mSlot);
SetSymbol(&method->selectors, slotRawSymbol(&classobj->name));
if (gCompilingFileSym) SetSymbol(&method->filenameSym, gCompilingFileSym);
SetInt(&method->charPos, linestarts[vardef->mVarName->mLineno] + errCharPosOffset);
methraw->methType = methReturnClassVar;
methraw->specialIndex = classVarIndex + slotRawInt(&classobj->classVarIndex);
addMethod(metaclassobj, method);
}
if (vardef->mFlags & rwWriteOnly) {
char setterName[256];
PyrSymbol *setterSym;
sprintf(setterName, "%s_", slotRawSymbol(&vardef->mVarName->mSlot)->name);
//underscore = strcpy(setterName, slotRawSymbol(&vardef->mVarName->mSlot)->name);
//underscore[0] = '_';
//underscore[1] = 0;
setterSym = getsym(setterName);
// create setter method
method = newPyrMethod();
methraw = METHRAW(method);
methraw->numargs = 2;
methraw->numvars = 0;
methraw->posargs = 2;
methraw->varargs = 0;
methraw->numtemps = 2;
methraw->popSize = 1;
SetNil(&method->contextDef);
SetNil(&method->varNames);
SetObject(&method->ownerclass, metaclassobj);
SetSymbol(&method->name, setterSym);
SetSymbol(&method->selectors, slotRawSymbol(&classobj->name));
if (gCompilingFileSym) SetSymbol(&method->filenameSym, gCompilingFileSym);
SetInt(&method->charPos, linestarts[vardef->mVarName->mLineno] + errCharPosOffset);
methraw->methType = methAssignClassVar;
methraw->specialIndex = classVarIndex + slotRawInt(&classobj->classVarIndex);
addMethod(metaclassobj, method);
}
classVarIndex++;
}
break;
case varConst :
vardef = varlist->mVarDefs;
for (; vardef; vardef = (PyrVarDefNode*)vardef->mNext) {
PyrSlot litslot;
compilePyrLiteralNode((PyrLiteralNode*)vardef->mDefVal, &litslot);
*kslot++ = litslot;
slotRawObject(&classobj->constValues)->size++;
*knameslot++ = slotRawSymbol(&vardef->mVarName->mSlot);
slotRawSymbolArray(&classobj->constNames)->size++;
if (vardef->mFlags & rwReadOnly) {
// create getter method
method = newPyrMethod();
methraw = METHRAW(method);
methraw->unused1 = 0;
methraw->unused2 = 0;
methraw->numargs = 1;
methraw->numvars = 0;
methraw->posargs = 1;
methraw->varargs = 0;
methraw->numtemps = 1;
methraw->popSize = 0;
SetNil(&method->contextDef);
SetNil(&method->varNames);
SetObject(&method->ownerclass, metaclassobj);
slotCopy(&method->name, &vardef->mVarName->mSlot);
if (gCompilingFileSym) SetSymbol(&method->filenameSym, gCompilingFileSym);
SetInt(&method->charPos, linestarts[vardef->mVarName->mLineno] + errCharPosOffset);
methraw->methType = methReturnLiteral;
slotCopy(&method->selectors, &litslot);
addMethod(metaclassobj, method);
}
}
break;
}
}
}
int getIndexType(PyrClassNode *classnode)
{
PyrSlotNode *node;
int res;
node = classnode->mIndexType;
if (node == NULL) res = obj_notindexed;
else {
char *name;
name = slotRawSymbol(&node->mSlot)->name;
if (strcmp(name, "slot") == 0) res = obj_slot;
else if (strcmp(name, "double") == 0) res = obj_double;
else if (strcmp(name, "float") == 0) res = obj_float;
else if (strcmp(name, "int32") == 0) res = obj_int32;
else if (strcmp(name, "int16") == 0) res = obj_int16;
else if (strcmp(name, "int8") == 0) res = obj_int8;
else if (strcmp(name, "char") == 0) res = obj_char;
else if (strcmp(name, "symbol") == 0) res = obj_symbol;
else {
error("Illegal indexed type. Must be one of:\n"
" slot, double, float, int8, int16, int32, char\n");
res = obj_slot;
compileErrors++;
}
}
return res;
}
void PyrClassNode::compile(PyrSlot *result)
{
PyrClass *classobj, *superclassobj, *metaclassobj;
int numClassMethods, numInstMethods;
bool isIntrinsic;
bool varsDiffer, superclassesDiffer, indexTypesDiffer;
bool shouldRecompileSubclasses = false;
int indexType;
// find num instvars in superclass
//postfl("class '%s'\n", slotRawSymbol(&mClassName->mSlot)->name);
superclassobj = getNodeSuperclass(this);
indexType = getIndexType(this);
//postfl("%s %d\n", slotRawSymbol(&mClassName->mSlot)->name, indexType);
if ((size_t)superclassobj == -1) {
// redundant error message removed:
//error("Can't find superclass of '%s'\n", slotRawSymbol(&mClassName->mSlot)->name);
//nodePostErrorLine(node);
return; // can't find superclass
}
mNumSuperInstVars = numSuperInstVars(superclassobj);
numClassMethods = 0;
numInstMethods = 0;
countClassVarDefs(this, &numClassMethods, &numInstMethods);
//postfl("accessor methods %d %d\n", numClassMethods, numInstMethods);
countNodeMethods(this, &numClassMethods, &numInstMethods);
//postfl("total methods %d %d\n", numClassMethods, numInstMethods);
// get or make a class object
// see if it already exists
classobj = slotRawSymbol(&mClassName->mSlot)->u.classobj;
if (classobj) {
// deal with intrinsic classes or other classes being recompiled here.
// recompile of subclasses not necessary if inst and class vars are
// unchanged.
metaclassobj = (PyrClass*)classobj->classptr;
isIntrinsic = slotRawInt(&classobj->classFlags) & classIsIntrinsic;
varsDiffer = compareVarDefs(this, classobj);
if (varsDiffer) {
if (isIntrinsic) {
//error("Class '%s' declaration doesn't match intrinsic definition.\n",
// slotRawSymbol(&mClassName->mSlot)->name);
return;
} else {
shouldRecompileSubclasses = true;
}
}
superclassesDiffer = superclassobj != slotRawSymbol(&classobj->superclass)->u.classobj;
indexTypesDiffer = indexType != slotRawInt(&classobj->instanceFormat);
//postfl("%d %d %d\n", indexType, slotRawInt(&classobj->instanceFormat));
//if (varsDiffer || superclassesDiffer || indexTypesDiffer) {
if (varsDiffer || superclassesDiffer || indexTypesDiffer) {
if (isIntrinsic) {
if (superclassesDiffer) {
error("Superclass of '%s' does not match intrinsic definition.\n",
slotRawSymbol(&mClassName->mSlot)->name);
nodePostErrorLine((PyrParseNode*)(mSuperClassName ?
mSuperClassName : mClassName));
compileErrors++;
}
if (indexTypesDiffer) {
error("Index type of '%s' does not match intrinsic definition.\n",
slotRawSymbol(&mClassName->mSlot)->name);
nodePostErrorLine((indexType ? (PyrParseNode*)mIndexType : (PyrParseNode*)mClassName));
compileErrors++;
}
error("Class '%s' declaration doesn't match intrinsic definition.\n",
slotRawSymbol(&mClassName->mSlot)->name);
return;
} else {
shouldRecompileSubclasses = true;
}
}
// reallocate fields in the class object
reallocClassObj(metaclassobj,
classClassNumInstVars, 0, 0,
numClassMethods, indexType, 0);
//postfl("^3 %d %d\n", metaclassobj, class_class);
//postfl("^4 %d %d\n", slotRawObject(&metaclassobj->iprototype), slotRawObject(&class_class->iprototype));
memcpy(slotRawObject(&metaclassobj->iprototype)->slots, slotRawObject(&class_class->iprototype)->slots,
sizeof(PyrSlot) * classClassNumInstVars);
memcpy(slotRawSymbolArray(&metaclassobj->instVarNames)->symbols,
slotRawSymbolArray(&class_class->instVarNames)->symbols,
sizeof(PyrSymbol*) * classClassNumInstVars);
slotRawObject(&metaclassobj->iprototype)->size = classClassNumInstVars;
slotRawSymbolArray(&metaclassobj->instVarNames)->size = classClassNumInstVars;
reallocClassObj(classobj,
mVarTally[varInst] + mNumSuperInstVars,
mVarTally[varClass],
mVarTally[varConst],
numInstMethods, indexType, 0);
} else {
PyrSymbol *superClassName, *metaClassName, *metaSuperClassName;
superClassName = superclassobj ? slotRawSymbol(&superclassobj->name) : NULL;
metaClassName = getmetasym(slotRawSymbol(&mClassName->mSlot)->name);
metaClassName->flags |= sym_MetaClass;
metaSuperClassName = superClassName ? getmetasym(superClassName->name) : NULL;
metaclassobj = newClassObj(class_class,
metaClassName, metaSuperClassName,
classClassNumInstVars, 0, 0, numClassMethods, indexType, 0);
// test
//postfl("^1 %d %d\n", metaclassobj, class_class);
//postfl("^2 %d %d\n", slotRawObject(&metaclassobj->iprototype), slotRawObject(&class_class->iprototype));
memcpy(slotRawObject(&metaclassobj->iprototype)->slots, slotRawObject(&class_class->iprototype)->slots,
sizeof(PyrSlot) * classClassNumInstVars);
memcpy(slotRawSymbolArray(&metaclassobj->instVarNames)->symbols,
slotRawSymbolArray(&class_class->instVarNames)->symbols,
sizeof(PyrSymbol*) * classClassNumInstVars);
slotRawObject(&metaclassobj->iprototype)->size = classClassNumInstVars;
slotRawObject(&metaclassobj->instVarNames)->size = classClassNumInstVars;
// end test
classobj = newClassObj(metaclassobj,
slotRawSymbol(&mClassName->mSlot), superClassName,
mVarTally[varInst] + mNumSuperInstVars,
mVarTally[varClass], mVarTally[varConst], numInstMethods, indexType, 0);
}
gCurrentClass = classobj;
gCurrentMetaClass = metaclassobj;
if (gCompilingFileSym) {
SetSymbol(&classobj->filenameSym, gCompilingFileSym);
SetInt(&classobj->charPos, linestarts[mClassName->mLineno] + errCharPosOffset);
SetSymbol(&metaclassobj->filenameSym, gCompilingFileSym);
SetInt(&metaclassobj->charPos, linestarts[mClassName->mLineno] + errCharPosOffset);
} else {
SetNil(&classobj->filenameSym);
SetNil(&metaclassobj->filenameSym);
}
// fill inst and class prototypes
fillClassPrototypes(this, classobj, superclassobj);
// compile methods
compileNodeMethods(this);
// recompileSubclasses
if (shouldRecompileSubclasses) {
recompileSubclasses(classobj);
}
}
void recompileSubclasses(PyrClass* classobj)
{
}
#if 0
void catVarLists(PyrVarListNode *varlist);
void catVarLists(PyrVarListNode *varlist)
{
PyrVarListNode *prevvarlist;
PyrVarDefNode *vardef, *lastvardef;
if (varlist) {
// find end of this list
vardef = varlist->mVarDefs;
for (; vardef; vardef = (PyrVarDefNode*)vardef->mNext) {
lastvardef = vardef;
}
prevvarlist = varlist;
varlist = (PyrVarListNode*)varlist->mNext;
for (; varlist; varlist = (PyrVarListNode*)varlist->mNext) {
vardef = varlist->mVarDefs;
if (lastvardef) {
lastvardef->mNext = (PyrParseNode*)vardef;
} else {
prevvarlist->mVarDefs = vardef;
}
// find end of this list
for (; vardef; vardef = (PyrVarDefNode*)vardef->mNext) {
lastvardef = vardef;
}
}
}
}
#else
void catVarLists(PyrVarListNode *varlist);
void catVarLists(PyrVarListNode *varlist)
{
PyrVarListNode *prevvarlist;
PyrVarDefNode *vardef, *lastvardef;
if (varlist) {
// find end of this list
vardef = varlist->mVarDefs;
lastvardef = (PyrVarDefNode*)vardef->mTail;
prevvarlist = varlist;
varlist = (PyrVarListNode*)varlist->mNext;
for (; varlist; varlist = (PyrVarListNode*)varlist->mNext) {
vardef = varlist->mVarDefs;
lastvardef->mNext = (PyrParseNode*)vardef;
// find end of this list
lastvardef = (PyrVarDefNode*)vardef->mTail;
}
}