public FunctionInfo(SynFuncDecl function, int typeIndex, bool imported)
{
this.function = function;
this.typeIndex = typeIndex;
this.functionIndex = uint.MaxValue; // Calculated later
this.imported = imported;
}
public override void BreakApartParsedTokens()
{
SynLog.Log($"Breaking apart type {this.typeName}.");
SynLog.LogFragments(this.declarationTokens);
// For struct structname { ... }, remove everything except the ...
this.declarationTokens.RemoveRange(0, 3);
int lastIdx = this.declarationTokens.Count - 1;
if (this.declarationTokens[lastIdx].MatchesSymbol(";"))
{
this.declarationTokens.RemoveRange(lastIdx - 1, 2);
}
else
{
this.declarationTokens.RemoveRange(lastIdx, 1);
}
while (this.declarationTokens.Count > 0)
{
if (this.declarationTokens[0].MatchesSymbol(";") == true)
{
this.declarationTokens.RemoveAt(0);
continue;
}
SynRegion rgn = SynRegion.Parse(this, this.declarationTokens);
if (rgn != null)
{
this.regions.Add(rgn.name, rgn);
continue;
}
SynFuncDecl fnParse =
SynFuncDecl.Parse(
this,
this.declarationTokens,
this.typeName,
false,
SynFuncDecl.ParseType.StructContext);
if (fnParse != null)
{
this.AddFunction(fnParse);
continue;
}
SynVarValue varParse = SynVarValue.ParseBodyVar(this.declarationTokens, SynVarValue.OuterScope.Struct);
if (varParse != null)
{
this.AddVariable(varParse);
continue;
}
}
}
public uint?GetFunctionIndex(SynFuncDecl fn)
{
FunctionInfo fi;
if (this.functionLookup.TryGetValue(fn, out fi) == false)
{
return(null);
}
return(fi.functionIndex);
}
public void RegisterFunction(SynFuncDecl fn)
{
SynLog.Log($"Registering function {fn.functionName}.");
if (this.functionLookup.ContainsKey(fn) == true)
{
throw new SynthExceptionImpossible("");
}
// Register the type, and get the type index
FunctionType fty = TurnFnTypeIntoWASMType(fn);
FunctionInfo finfo = new FunctionInfo(fn, fty.index, fn.isExtern);
this.functionInfos.Add(finfo);
this.functionLookup.Add(fn, finfo);
}
public FunctionType TurnFnTypeIntoWASMType(SynFuncDecl fnd)
{
WASM.Bin.TypeID retTy = GetTrueParamReturnType(fnd.returnType);
List <WASM.Bin.TypeID> paramTy = new List <WASM.Bin.TypeID>();
for (int i = 0; i < fnd.parameterSet.Count; ++i)
{
paramTy.Add(GetTrueParamReturnType(fnd.parameterSet.Get(i).type));
}
for (int i = 0; i < this.functionTypes.Count; ++i)
{
FunctionType ftCanid = this.functionTypes[i];
if (ftCanid.retTy != retTy)
{
continue;
}
if (paramTy.Count != ftCanid.paramTys.Count)
{
continue;
}
bool match = true;
for (int j = 0; j < paramTy.Count; ++j)
{
if (paramTy[j] != ftCanid.paramTys[j])
{
match = false;
break;
}
}
if (match == true)
{
return(ftCanid);
}
}
FunctionType fnNew = new FunctionType(this.functionTypes.Count, retTy, paramTy);
this.functionTypes.Add(fnNew);
return(fnNew);
}
public override void BreakApartParsedTokens()
{
List <Token> inner = this.declPhrase.GetRange(bodyStart + 1, this.declPhrase.Count - bodyStart - 2);
int line = inner[0].line;
SynFuncDecl decl =
SynFuncDecl.Parse(
this,
inner,
null,
false,
SynFuncDecl.ParseType.Region | SynFuncDecl.ParseType.Externable);
if (decl == null)
{
throw new SynthExceptionSyntax(line, "Only entry and exit functions are allowed in regions.");
}
if (string.IsNullOrEmpty(decl.returnTyName) == false)
{
throw new SynthExceptionSyntax(line, "Region functions cannot have return types.");
}
if (decl.functionName == "entry")
{
if (this.entry != null)
{
throw new SynthExceptionSyntax(line, "A region entry function being redeclared.");
}
this.entry = decl;
}
else if (decl.functionName == "exit")
{
if (this.exit != null)
{
throw new SynthExceptionSyntax(line, "A region entry function being redeclared.");
}
// TODO: Compare exit parameters with entry.
this.exit = decl;
}
}
public void AddFunction(SynFuncDecl fnAdding)
{
List <SynFuncDecl> fns;
if (this.functions.TryGetValue(fnAdding.functionName, out fns) == false)
{
fns = new List <SynFuncDecl>();
this.functions.Add(fnAdding.functionName, fns);
}
else
{
if (fnAdding.isDestructor == true)
{
foreach (SynFuncDecl already in fns)
{
if (already.isDestructor == true)
{
throw new SynthExceptionSyntax(fnAdding.declPhrase[0], "Attempting to declare multiple destructors.");
}
}
}
else
{
// Check if there's a signature collision with function overloads
foreach (SynFuncDecl already in fns)
{
if (already.parameterSet.ExactlyMatches(fnAdding.parameterSet) == true)
{
throw new System.Exception($"Function declaration {fnAdding.functionName} already included");
}
}
}
}
fns.Add(fnAdding);
}
// TODO: Perhaps this function should be moved into WASMBuild?
public SynNestingBuilder BuildFunction(SynFuncDecl fnd)
{
SynNestingBuilder builder = new SynNestingBuilder(null);
if (fnd.ast != null)
{
throw new SynthExceptionImpossible($"Attempting to build function {fnd.functionName} AST multiple times.");
}
SynLog.Log($"Entered SynthFuncDecl.Build() for {fnd.functionName}.");
// NOTE: For now functions are non-typed (in the SynthSyn language) and
// are non addressable.
fnd.ast =
new AST(
fnd.declPhrase[0],
builder,
ASTOp.FunctionDecl,
fnd,
null,
false,
AST.DataManifest.NoData);
SynLog.Log($"Building function AST for {fnd.functionName}.");
SynLog.Log("");
List <SynNestingBuilder> builders = new List <SynNestingBuilder>();
builders.Add(builder);
//List<TokenTree> treeLines = new List<TokenTree>();
for (int i = 0; i < fnd.executingLines.Count; ++i)
{
List <Token> execLine = fnd.executingLines[i];
SynLog.LogFragments(execLine);
TokenTree rootLineNode = TokenTree.EatTokensIntoTree(execLine, fnd, true);
SynLog.LogTree(rootLineNode);
// If it's a member function (not a static function) then full in the struct
// we belong to as a he invoking scope. Or else set it to null. Its syntax scope
// it still all the way where the source code is, but doesn't have a "this" member
// function.
SynScope invokingScope = null;
if (fnd.isStatic == false)
{
invokingScope = fnd.GetStructScope();
}
AST exprAST = builder.ProcessFunctionExpression(builders, this, invokingScope, fnd, rootLineNode);
if (exprAST == null)
{
// We shouldn't have received null, we should have thrown before this
throw new SynthExceptionImpossible(""); //TODO:
}
fnd.ast.branches.Add(exprAST);
}
fnd.ast.branches.Add(new AST(new Token(), builder, ASTOp.EndScope, builder, null, false, AST.DataManifest.NoData));
SynLog.Log("");
SynLog.Log($"Encountered {builders.Count} nested scopes.");
for (int i = 0; i < builders.Count; ++i)
{
SynLog.LogIndent(0, $"Scope {i}");
SynLog.LogIndent(1, $"Line number : {builders[i].lineNumber}");
SynLog.LogIndent(1, $"Stack Elements : Ele {builders[i].locStkEle.Count} - Vars {builders[i].locStkVars.Count}");
SynLog.LogIndent(1, $"Memory Stack : Vars {builders[i].memStkVars.Count}");
SynLog.LogIndent(1, $"Total Memory Stack : Bytes {builders[i].totalMemoryStackBytes}");
}
SynLog.Log("");
SynLog.Log(fnd.ast.DumpDiagnostic());
SynLog.Log($"Finished building AST : {fnd.functionName}.");
SynLog.Log($"Converting AST to binary WASM : {fnd.functionName}.");
// Before the AST is turned into actual WASM binary, we need to finalize the
// byte alignment and the indices of local stack variables. This is done with
// CompileAlignment, who's lower scopes should appear earlier in the builders
// list before higher children scopes.
for (int i = 0; i < builders.Count; ++i)
{
if (i == 0)
{
builders[i].CompileAlignment(fnd);
}
else
{
builders[i].CompileAlignment();
}
}
// Gather all the local variables and declare them. This isn't as efficient as things
// could be because after variables go out of scope, their positions on the stack
// can be reused if they match types we encounter in the future, but that can be
// handled later.
// The program binary
WASMByteBuilder fnBuild = new WASMByteBuilder();
// Gather all the local variables
List <WASM.Bin.TypeID> localVarTys = new List <WASM.Bin.TypeID>();
foreach (SynNestingBuilder b in builders)
{
foreach (ValueRef stkVal in b.locStkEle)
{
if (stkVal.varType.intrinsic == false)
{
throw new SynthExceptionCompile(""); // TODO: Error msg
}
switch (stkVal.varType.typeName)
{
case "bool":
case "int8":
case "uint8":
case "int16":
case "uint16":
case "int":
case "int32":
localVarTys.Add(WASM.Bin.TypeID.Int32);
break;
case "int64":
case "uint64":
localVarTys.Add(WASM.Bin.TypeID.Int64);
break;
case "float":
localVarTys.Add(WASM.Bin.TypeID.Float32);
break;
case "double":
localVarTys.Add(WASM.Bin.TypeID.Float64);
break;
}
}
}
List <KeyValuePair <WASM.Bin.TypeID, int> > consolidatedLocalTys = new List <KeyValuePair <WASM.Bin.TypeID, int> >();
for (int i = 0; i < localVarTys.Count; ++i)
{
WASM.Bin.TypeID tyid = localVarTys[i];
int ct = 1;
++i;
for (; i < localVarTys.Count; ++i)
{
if (localVarTys[i] != tyid)
{
break;
}
++ct;
}
consolidatedLocalTys.Add(new KeyValuePair <WASM.Bin.TypeID, int>(tyid, ct));
}
fnBuild.AddLEB128((uint)consolidatedLocalTys.Count); // Local decl
for (int i = 0; i < consolidatedLocalTys.Count; ++i)
{
fnBuild.AddLEB128((uint)consolidatedLocalTys[i].Value);
// These are really bytes, but they'll end up being added as bytes since they're
// small constants
fnBuild.AddLEB128((uint)consolidatedLocalTys[i].Key);
}
builder.BuildBSFunction(fnd, fnd.ast, this, builder, fnBuild);
fnBuild.Add_End();
fnd.fnBin = fnBuild.Bin();
SynLog.Log($"Exiting SynthFuncDecl.Build({fnd.functionName}).");
return(builder);
}
public byte[] BuildWASM()
{
SynLog.LogHeader("Entered BuildWASM() from SynthContext.cs");
//WASMBuild build = new WASMBuild(this);
// Gather all the functions in the entire build, and make a collection
// of their unique types.
this.rootContext.GatherFunctionRegistration(this);
// Reorganize function indices so imported functions come first. This is
// required for WASM.
this.RealignFunctions();
List <byte> fileContent = new List <byte>();
fileContent.AddRange(System.BitConverter.GetBytes(WASM.BinParse.WASM_BINARY_MAGIC));
fileContent.AddRange(System.BitConverter.GetBytes(1));
// TODO: Consider removing the WASMSection class (in another file)
foreach (FunctionInfo fi in this.functionInfos)
{
if (fi.function.isExtern == true)
{
continue;
}
this.BuildFunction(fi.function);
}
//foreach (var kvp in this.rootContext.Functions)
//{
// List<SynthFuncDecl> lst = kvp.Value;
// foreach (SynthFuncDecl sfd in lst)
// {
// if (sfd.isExtern == true)
// continue;
//
// this.BuildFunction(sfd);
// }
//}
//
// FUNCTION TYPE DECLARATIONS
// "Type"s
//////////////////////////////////////////////////
int startFnType = this.GetOrAddFunctionType(WASM.Bin.TypeID.Result, new List <WASM.Bin.TypeID>());
fileContent.Add((byte)WASM.Bin.Section.TypeSec);
{
List <byte> typeSection = new List <byte>();
// Function type count
// + 1 for the start function
typeSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)functionTypes.Count));
for (int i = 0; i < this.functionTypes.Count; ++i)
{
FunctionType fty = functionTypes[i];
// Function tag
typeSection.Add((byte)WASM.Bin.TypeID.Function);
// Param count
typeSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)fty.paramTys.Count));
// Param values
for (int j = 0; j < fty.paramTys.Count; ++j)
{
// Types will never be big enough to need LEB encoding. Single byte is fine.
typeSection.Add((byte)fty.paramTys[j]);
}
// Only 1 return value max will ever be returned.
if (fty.retTy == WASM.Bin.TypeID.Empty)
{
typeSection.Add(0);
}
else
{
typeSection.Add(1);
typeSection.Add((byte)fty.retTy);
}
}
fileContent.AddRange(WASM.BinParse.EncodeSignedLEB(typeSection.Count));
fileContent.AddRange(typeSection);
}
//
// IMPORTED FUNCTION DECLARATIONS
// "Import"s
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.ImportSec);
{
List <byte> importSection = new List <byte>();
List <FunctionInfo> lstImported = GetRangeImportFunctions();
// Function count
importSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)lstImported.Count));
for (int i = 0; i < lstImported.Count; ++i)
{
string env = "ImportedFns";
string field = lstImported[i].function.functionName;
importSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)env.Length));
importSection.AddRange(System.Text.Encoding.ASCII.GetBytes(env));
//
importSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)field.Length));
importSection.AddRange(System.Text.Encoding.ASCII.GetBytes(field));
importSection.Add(0); // Import kind
importSection.AddRange(WASM.BinParse.EncodeSignedLEB((uint)lstImported[i].typeIndex));
}
fileContent.AddRange(WASM.BinParse.EncodeSignedLEB(importSection.Count));
fileContent.AddRange(importSection);
}
//
// LOCAL FUNCTION DECLARACTIONS
// "Function"s
//////////////////////////////////////////////////
List <FunctionInfo> lstLocalFns = GetRangeNonImportFunctions();
fileContent.Add((byte)PxPre.WASM.Bin.Section.FunctionSec);
{
List <byte> functionSection = new List <byte>();
// Function Count
functionSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)lstLocalFns.Count + 1));
for (int i = 0; i < lstLocalFns.Count; ++i)
{
functionSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)lstLocalFns[i].typeIndex));
}
functionSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)startFnType));
fileContent.AddRange(WASM.BinParse.EncodeSignedLEB(functionSection.Count));
fileContent.AddRange(functionSection);
}
int startIdx = -1; // The start index function
startIdx = functionInfos.Count;
//
// TABLE DECLARACTIONS
// "Table"s
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.TableSec);
{
List <byte> tableSections = new List <byte>();
tableSections.AddRange(WASM.BinParse.EncodeUnsignedLEB(0));
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)tableSections.Count));
fileContent.AddRange(tableSections);
}
//
// MEMORY DECLARACTIONS
// "Memory"s
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.MemorySec);
{
List <byte> memorySection = new List <byte>();
memorySection.AddRange(WASM.BinParse.EncodeUnsignedLEB(1));
memorySection.Add(0); // flags
memorySection.Add(2); // initial page ct
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)memorySection.Count));
fileContent.AddRange(memorySection);
}
//
// --
// "Globals"s
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.GlobalSec);
{
List <byte> globalsSection = new List <byte>();
globalsSection.AddRange(WASM.BinParse.EncodeUnsignedLEB(1));
//
globalsSection.Add((byte)WASM.Bin.TypeID.Int32); // Type
globalsSection.Add(0); // Not mutable
globalsSection.Add((byte)WASM.Instruction.i32_const);
globalsSection.AddRange(WASM.BinParse.EncodeSignedLEB(stackMemByteCt));
globalsSection.Add((byte)WASM.Instruction.end);
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)globalsSection.Count));
fileContent.AddRange(globalsSection);
}
// --
// "Export"s
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.ExportSec);
{
List <byte> exportSection = new List <byte>();
uint exportedCt = 0;
for (int i = 0; i < lstLocalFns.Count; ++i)
{
if (lstLocalFns[i].function.isStatic == false || lstLocalFns[i].function.isEntry == false)
{
continue;
}
++exportedCt;
}
++exportedCt; // +1 for global MemStkSize
exportSection.AddRange(WASM.BinParse.EncodeUnsignedLEB(exportedCt));
// Iterate through it again the same way, but actually save out instead of count this time.
for (int i = 0; i < lstLocalFns.Count; ++i)
{
if (lstLocalFns[i].function.isStatic == false || lstLocalFns[i].function.isEntry == false)
{
continue;
}
exportSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)lstLocalFns[i].function.functionName.Length));
exportSection.AddRange(System.Text.Encoding.ASCII.GetBytes(lstLocalFns[i].function.functionName));
exportSection.Add(0); // kind
exportSection.AddRange(WASM.BinParse.EncodeUnsignedLEB(lstLocalFns[i].functionIndex));
}
// Add export of MemStkSize
exportSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)"MemStkSize".Length));
exportSection.AddRange(System.Text.Encoding.ASCII.GetBytes("MemStkSize"));
exportSection.Add(3); // kind - TODO: Does PreWASM have this defined somewhere?
exportSection.Add(0); // Global index
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)exportSection.Count));
fileContent.AddRange(exportSection);
}
//
// --
// "Start"
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.StartSec);
{
List <byte> startSection = new List <byte>();
startSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)startIdx));
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)startSection.Count));
fileContent.AddRange(startSection);
}
//
// --
// "Elems"
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.ElementSec);
{
List <byte> elemsSection = new List <byte>();
elemsSection.AddRange(WASM.BinParse.EncodeUnsignedLEB(0));
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)elemsSection.Count));
fileContent.AddRange(elemsSection);
}
//
// --
// "Code"
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.CodeSec);
{
List <byte> codeSection = new List <byte>();
// Num functions
codeSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)lstLocalFns.Count + 1));
for (int i = 0; i < lstLocalFns.Count; ++i)
{
FunctionInfo finfo = lstLocalFns[i];
SynFuncDecl fn = finfo.function;
if (fn.fnBin == null)
{
throw new SynthExceptionImpossible($"Attempting to save out WASM of function {fn.functionName} that hasn't been processed.");
}
// Function size
codeSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)fn.fnBin.Length));
// Locals byte size
codeSection.AddRange(fn.fnBin);
}
WASMByteBuilder startFn = new WASMByteBuilder();
startFn.AddLEB128(0); // Local declarations
// Set the starting stack position (4) in memory. This is basically the stack position, but
// we reserve the first 4 bytes for the stack information.
startFn.Add_I32Const(0);
startFn.Add_I32Const(4);
startFn.Add_I32Store();
startFn.Add_End();
//
codeSection.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)startFn.BinCount()));
codeSection.AddRange(startFn.Bin());
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)codeSection.Count));
fileContent.AddRange(codeSection);
}
//
// --
// "Data"
//////////////////////////////////////////////////
fileContent.Add((byte)WASM.Bin.Section.DataSec);
{
List <byte> dataSection = new List <byte>();
dataSection.AddRange(WASM.BinParse.EncodeUnsignedLEB(0));
fileContent.AddRange(WASM.BinParse.EncodeUnsignedLEB((uint)dataSection.Count));
fileContent.AddRange(dataSection);
}
return(fileContent.ToArray());
}
public int IndexFnTypeIntoWASMType(SynFuncDecl fnd)
{
return(TurnFnTypeIntoWASMType(fnd).index);
}
/// <summary>
/// This function is expected to be called during AST construction
/// (of whatever needs the copy constructor). This means struct
/// processing and alignment should have already occured. This also
/// means the function will be queued for being constructed into
/// WASM binary like all other functions in a later pass.
/// </summary>
/// <param name="autocreate">If the function doesn't exist, auto
/// create a default copy constructor and register it with the struct.
/// </param>
/// <returns>The found, or created, copy constructor for the struct.</returns>
public override SynFuncDecl GetCopyConstructor(bool autocreate, SynNestingBuilder scb)
{
List <SynFuncDecl> lstFns;
if (this.functions.TryGetValue(this.typeName, out lstFns) == false)
{
if (autocreate == false)
{
return(null);
}
// If we're autocreating, prepare a list for it to be registered in.
lstFns = new List <SynFuncDecl>();
this.functions.Add(this.typeName, lstFns);
}
else
{
foreach (SynFuncDecl fns in lstFns)
{
if (fns.returnType != null)
{
continue;
}
if (fns.parameterSet.Count != 2)
{
continue;
}
if (
fns.parameterSet.Get(0).type != this ||
fns.parameterSet.Get(1).type != this)
{
continue;
}
return(fns);
}
if (autocreate == false)
{
return(null);
}
}
SynFuncDecl sfdCC = new SynFuncDecl(this);
//
SynVarValue svvDst = new SynVarValue();
svvDst.varLoc = SynVarValue.VarLocation.ThisRef;
svvDst.dataType = SynVarValue.VarValueDataType.Pointer;
//
SynVarValue svvSrc = new SynVarValue();
svvSrc.varLoc = SynVarValue.VarLocation.Parameter;
svvSrc.dataType = SynVarValue.VarValueDataType.Reference;
sfdCC.parameterSet.AddParameter(svvDst);
sfdCC.parameterSet.AddParameter(svvSrc);
// TODO: Do explicit alignment here?
// Add this ahead of time
lstFns.Add(sfdCC);
// Go through each variable in order and copy them by producing the proper AST
for (int i = 0; i < this.varDefs.Count; ++i)
{
SynVarValue svv = this.varDefs[i]; // The member to copy
if (svv.type.intrinsic == true)
{
AST astSrcDeref = new AST(new Token(-1, svv.varName, TokenType.tyWord), scb, ASTOp.DerefName, null, svv.type, false, AST.DataManifest.Procedural, 0);
AST astSrcGetMember = new AST(new Token(), scb, ASTOp.GetMemberVar, svvSrc, this, false, AST.DataManifest.Procedural, 0, astSrcDeref);
AST astDstDeref = new AST(new Token(-1, svv.varName, TokenType.tyWord), scb, ASTOp.DerefName, null, svv.type, false, AST.DataManifest.Procedural, 0);
AST astDstGetMember = new AST(new Token(), scb, ASTOp.GetMemberVar, svvSrc, this, false, AST.DataManifest.Procedural, 0, astSrcDeref);
AST astSetVar = new AST(new Token(), scb, ASTOp.SetValue, null, null, false, AST.DataManifest.NoData, 0, astSrcDeref, astSrcGetMember);
sfdCC.ast.branches.Add(astSetVar);
}
else
{
// Else, it's a sub-struct, and we use GetCopyConstructor() recursively
// to copy it.
throw new SynthExceptionCompile("Class copy constructors are not supported.");
}
}
return(sfdCC);
}
public void ParseContext(List <Token> tokens)
{
SynLog.LogHeader("Starting Parse Content");
SynLog.Log("\tTokens:");
SynLog.Log(tokens);
// Get param globals first
//
//////////////////////////////////////////////////
while (tokens.Count > 0)
{
SynVarValue parsedParam = SynVarValue.ParseExposedParam(tokens);
if (parsedParam == null)
{
break;
}
this.AddVariable(parsedParam);
}
// Parse Sections
//
//////////////////////////////////////////////////
int idx = 0;
while (tokens.Count > 0)
{
// Get rid of stray parenthesis
if (tokens[idx].Matches(TokenType.tySymbol, ";") == true)
{
tokens.RemoveAt(0);
continue;
}
// Struct parsing
if (tokens[0].Matches(TokenType.tyWord, "struct") == true)
{
SynStruct sst = SynStruct.Parse(this, tokens);
if (sst != null)
{
this.AddType(sst);
continue;
}
}
// Function parsing
if (tokens[0].Matches(TokenType.tyWord, "entry") == true)
{
SynFuncDecl sfd = SynFuncDecl.Parse(this, tokens, "", true, SynFuncDecl.ParseType.Entry);
sfd.callType = SynFuncDecl.CallType.Entry;
if (sfd != null)
{
this.AddFunction(sfd);
continue;
}
else
{
throw new System.Exception("entry keyword not part of valid function.");
}
}
SynFuncDecl synthFn =
SynFuncDecl.Parse(
this, tokens,
"",
true,
SynFuncDecl.ParseType.RootContext);
if (synthFn != null)
{
this.AddFunction(synthFn);
continue;
}
SynVarValue synthVar = SynVarValue.ParseBodyVar(tokens, SynVarValue.OuterScope.Global);
if (synthVar != null)
{
this.AddVariable(synthVar);
continue;
}
throw new System.Exception("Unknown token while parsing root context.");
}
// Verify Structs
//
//////////////////////////////////////////////////
SynLog.LogHeader("Verifying types");
while (true)
{
TypeConsolidate tc = this.ResolveStaticTypeAlignments();
if (tc == TypeConsolidate.UndeterminedNoChange)
{
throw new System.Exception("Could not resolve all types");
}
if (tc == TypeConsolidate.AllDetermined)
{
break;
}
}
SynLog.Log("Finished verifying struct successfully.");
// Gathering globals
//
//////////////////////////////////////////////////
SynLog.LogHeader("Gathering globals");
List <SynVarValue> globals = new List <SynVarValue>();
foreach (SynScope s in this.EnumerateScopes())
{
s.RegisterGlobals(globals);
}
this.totalGlobalBytes = 0;
foreach (SynVarValue svv in globals)
{
svv.alignmentOffset = this.totalGlobalBytes;
int byteSz = svv.type.GetByteSize();
if (byteSz <= 0)
{
throw new SynthExceptionImpossible("Data type for global variable is zero in size.");
}
SynLog.Log($"Added {svv.varName} to globals at offset {svv.alignmentOffset}");
this.totalGlobalBytes += byteSz;
}
SynLog.Log($"Total global variable space is {this.totalGlobalBytes}.");
// Verify Functions
//
//////////////////////////////////////////////////
SynLog.LogHeader("Verifying After function and variable collection pass.");
this.Validate_AfterTypeAlignment(0);
SynLog.Log("Finished verifying functions successfully.");
}
