forked from cosmonaut/wraith-lang
function calls
parent
e4cf57ef74
commit
acb6c61922
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@ -23,7 +23,7 @@ find_package(LLVM)
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include_directories(${CMAKE_SOURCE_DIR})
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BISON_TARGET(Parser wraith.y ${CMAKE_CURRENT_BINARY_DIR}/y.tab.c COMPILE_FLAGS -d)
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BISON_TARGET(Parser wraith.y ${CMAKE_CURRENT_BINARY_DIR}/y.tab.c COMPILE_FLAGS "-d -v -t")
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FLEX_TARGET(Scanner wraith.lex ${CMAKE_CURRENT_BINARY_DIR}/lex.yy.c)
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ADD_FLEX_BISON_DEPENDENCY(Scanner Parser)
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165
compiler.c
165
compiler.c
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@ -53,12 +53,22 @@ typedef struct StructTypeField
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uint32_t index;
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} StructTypeField;
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typedef struct StructTypeFunction
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{
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char *name;
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LLVMValueRef function;
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LLVMTypeRef returnType;
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uint8_t isStatic;
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} StructTypeFunction;
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typedef struct StructTypeFieldDeclaration
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{
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LLVMTypeRef structType;
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StructTypeField *fields;
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uint32_t fieldCount;
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StructTypeFunction *functions;
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uint32_t functionCount;
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} StructTypeFieldDeclaration;
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StructTypeFieldDeclaration *structTypeFieldDeclarations;
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@ -198,6 +208,8 @@ static void AddStructDeclaration(
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structTypeFieldDeclarations[index].structType = wStructType;
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structTypeFieldDeclarations[index].fields = NULL;
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structTypeFieldDeclarations[index].fieldCount = 0;
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structTypeFieldDeclarations[index].functions = NULL;
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structTypeFieldDeclarations[index].functionCount = 0;
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for (i = 0; i < fieldDeclarationCount; i += 1)
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{
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@ -210,7 +222,63 @@ static void AddStructDeclaration(
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structTypeFieldDeclarationCount += 1;
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}
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static void AddStructVariables(
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static void DeclareStructFunction(
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LLVMTypeRef wStructType,
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LLVMValueRef function,
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LLVMTypeRef returnType,
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uint8_t isStatic,
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char *name
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) {
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uint32_t i, index;
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for (i = 0; i < structTypeFieldDeclarationCount; i += 1)
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{
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if (structTypeFieldDeclarations[i].structType == wStructType)
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{
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index = structTypeFieldDeclarations[i].functionCount;
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structTypeFieldDeclarations[i].functions = realloc(structTypeFieldDeclarations[i].functions, sizeof(StructTypeFunction) * (structTypeFieldDeclarations[i].functionCount + 1));
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structTypeFieldDeclarations[i].functions[index].name = strdup(name);
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structTypeFieldDeclarations[i].functions[index].function = function;
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structTypeFieldDeclarations[i].functions[index].returnType = returnType;
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structTypeFieldDeclarations[i].functions[index].isStatic = isStatic;
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structTypeFieldDeclarations[i].functionCount += 1;
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return;
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}
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}
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fprintf(stderr, "Could not find struct type for function!");
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}
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static LLVMValueRef LookupFunction(
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LLVMValueRef structPointer,
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char *name,
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LLVMTypeRef *pReturnType,
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uint8_t *pStatic
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) {
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uint32_t i, j;
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for (i = 0; i < structTypeFieldDeclarationCount; i += 1)
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{
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if (structTypeFieldDeclarations[i].structType == LLVMTypeOf(structPointer))
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{
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for (j = 0; j < structTypeFieldDeclarations[i].functionCount; j += 1)
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{
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if (strcmp(structTypeFieldDeclarations[i].functions[j].name, name) == 0)
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{
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*pReturnType = structTypeFieldDeclarations[i].functions[j].returnType;
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*pStatic = structTypeFieldDeclarations[i].functions[j].isStatic;
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return structTypeFieldDeclarations[i].functions[j].function;
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}
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}
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}
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}
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fprintf(stderr, "Could not find struct function!");
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return NULL;
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}
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static void AddStructVariablesToScope(
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LLVMBuilderRef builder,
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LLVMValueRef structPointer
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) {
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@ -244,7 +312,6 @@ static void AddStructVariables(
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static LLVMValueRef CompileExpression(
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LLVMBuilderRef builder,
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LLVMValueRef function,
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Node *binaryExpression
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);
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@ -309,11 +376,10 @@ static LLVMValueRef CompileNumber(
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static LLVMValueRef CompileBinaryExpression(
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LLVMBuilderRef builder,
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LLVMValueRef function,
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Node *binaryExpression
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) {
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LLVMValueRef left = CompileExpression(builder, function, binaryExpression->children[0]);
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LLVMValueRef right = CompileExpression(builder, function, binaryExpression->children[1]);
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LLVMValueRef left = CompileExpression(builder, binaryExpression->children[0]);
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LLVMValueRef right = CompileExpression(builder, binaryExpression->children[1]);
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switch (binaryExpression->operator.binaryOperator)
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{
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@ -334,25 +400,51 @@ static LLVMValueRef CompileBinaryExpression(
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/* FIXME THIS IS ALL BROKEN */
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static LLVMValueRef CompileFunctionCallExpression(
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LLVMBuilderRef builder,
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LLVMValueRef function,
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Node *expression
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) {
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uint32_t i;
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uint32_t argumentCount = expression->children[1]->childCount;
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uint32_t argumentCount = 0;
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LLVMValueRef args[argumentCount];
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LLVMValueRef function;
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uint8_t isStatic;
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LLVMValueRef structInstance;
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LLVMTypeRef functionReturnType;
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char *returnName = "";
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for (i = 0; i < argumentCount; i += 1)
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/* FIXME: this needs to be recursive on access chains */
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if (expression->children[0]->syntaxKind == AccessExpression)
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{
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args[i] = CompileExpression(builder, function, expression->children[1]->children[i]);
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structInstance = FindVariablePointer(expression->children[0]->children[0]->value.string);
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function = LookupFunction(structInstance, expression->children[0]->children[1]->value.string, &functionReturnType, &isStatic);
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}
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else
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{
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fprintf(stderr, "Failed to find function!\n");
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return NULL;
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}
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//return LLVMBuildCall(builder, FindVariableValueByName(builder, wStructValue, expression->children[0]->value.string), args, argumentCount, "tmp");
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return NULL;
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if (!isStatic)
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{
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args[argumentCount] = structInstance;
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argumentCount += 1;
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}
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for (i = 0; i < expression->children[1]->childCount; i += 1)
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{
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args[argumentCount] = CompileExpression(builder, expression->children[1]->children[i]);
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argumentCount += 1;
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}
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if (LLVMGetTypeKind(functionReturnType) != LLVMVoidTypeKind)
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{
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returnName = "callReturn";
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}
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return LLVMBuildCall(builder, function, args, argumentCount, returnName);
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}
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static LLVMValueRef CompileAccessExpressionForStore(
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LLVMBuilderRef builder,
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LLVMValueRef function,
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Node *expression
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) {
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Node *accessee = expression->children[0];
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@ -363,7 +455,6 @@ static LLVMValueRef CompileAccessExpressionForStore(
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static LLVMValueRef CompileAccessExpression(
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LLVMBuilderRef builder,
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LLVMValueRef function,
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Node *expression
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) {
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Node *accessee = expression->children[0];
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@ -375,19 +466,18 @@ static LLVMValueRef CompileAccessExpression(
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static LLVMValueRef CompileExpression(
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LLVMBuilderRef builder,
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LLVMValueRef function,
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Node *expression
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) {
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switch (expression->syntaxKind)
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{
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case AccessExpression:
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return CompileAccessExpression(builder, function, expression);
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return CompileAccessExpression(builder, expression);
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case BinaryExpression:
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return CompileBinaryExpression(builder, function, expression);
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return CompileBinaryExpression(builder, expression);
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case FunctionCallExpression:
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return CompileFunctionCallExpression(builder, function, expression);
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return CompileFunctionCallExpression(builder, expression);
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case Identifier:
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return FindVariableValue(builder, expression->value.string);
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@ -400,9 +490,9 @@ static LLVMValueRef CompileExpression(
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return NULL;
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}
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static void CompileReturn(LLVMBuilderRef builder, LLVMValueRef function, Node *returnStatemement)
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static void CompileReturn(LLVMBuilderRef builder, Node *returnStatemement)
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{
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LLVMValueRef expression = CompileExpression(builder, function, returnStatemement->children[0]);
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LLVMValueRef expression = CompileExpression(builder, returnStatemement->children[0]);
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LLVMBuildRet(builder, expression);
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}
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@ -411,13 +501,13 @@ static void CompileReturnVoid(LLVMBuilderRef builder)
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LLVMBuildRetVoid(builder);
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}
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static void CompileAssignment(LLVMBuilderRef builder, LLVMValueRef function, Node *assignmentStatement)
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static void CompileAssignment(LLVMBuilderRef builder, Node *assignmentStatement)
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{
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LLVMValueRef result = CompileExpression(builder, function, assignmentStatement->children[1]);
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LLVMValueRef result = CompileExpression(builder, assignmentStatement->children[1]);
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LLVMValueRef identifier;
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if (assignmentStatement->children[0]->syntaxKind == AccessExpression)
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{
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identifier = CompileAccessExpressionForStore(builder, function, assignmentStatement->children[0]);
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identifier = CompileAccessExpressionForStore(builder, assignmentStatement->children[0]);
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}
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else if (assignmentStatement->children[0]->syntaxKind == Identifier)
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{
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@ -459,7 +549,11 @@ static uint8_t CompileStatement(LLVMBuilderRef builder, LLVMValueRef function, N
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switch (statement->syntaxKind)
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{
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case Assignment:
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CompileAssignment(builder, function, statement);
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CompileAssignment(builder, statement);
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return 0;
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case FunctionCallExpression:
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CompileFunctionCallExpression(builder, statement);
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return 0;
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case Declaration:
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@ -467,7 +561,7 @@ static uint8_t CompileStatement(LLVMBuilderRef builder, LLVMValueRef function, N
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return 0;
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case Return:
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CompileReturn(builder, function, statement);
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CompileReturn(builder, statement);
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return 1;
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case ReturnVoid:
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@ -531,6 +625,8 @@ static void CompileFunction(
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LLVMValueRef function = LLVMAddFunction(module, functionName, functionType);
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free(functionName);
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DeclareStructFunction(wStructPointerType, function, returnType, isStatic, functionSignature->children[0]->value.string);
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LLVMBasicBlockRef entry = LLVMAppendBasicBlock(function, "entry");
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LLVMBuilderRef builder = LLVMCreateBuilder();
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LLVMPositionBuilderAtEnd(builder, entry);
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@ -538,7 +634,7 @@ static void CompileFunction(
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if (!isStatic)
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{
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LLVMValueRef wStructPointer = LLVMGetParam(function, 0);
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AddStructVariables(builder, wStructPointer);
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AddStructVariablesToScope(builder, wStructPointer);
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}
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for (i = 0; i < functionSignature->children[2]->childCount; i += 1)
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@ -626,16 +722,16 @@ static void Compile(LLVMModuleRef module, LLVMContextRef context, Node *node)
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{
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uint32_t i;
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switch (node->syntaxKind)
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{
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case StructDeclaration:
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CompileStruct(module, context, node);
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break;
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}
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for (i = 0; i < node->childCount; i += 1)
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{
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Compile(module, context, node->children[i]);
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if (node->children[i]->syntaxKind == StructDeclaration)
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{
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CompileStruct(module, context, node->children[i]);
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}
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else
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{
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fprintf(stderr, "top level declarations that are not structs are forbidden!\n");
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}
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}
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}
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@ -647,6 +743,9 @@ int main(int argc, char *argv[])
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return 1;
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}
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extern int yydebug;
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yydebug = 1;
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scope = CreateScope();
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structTypeFieldDeclarations = NULL;
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11
wraith.y
11
wraith.y
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@ -62,6 +62,8 @@ extern Node *rootNode;
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%parse-param { FILE* fp } { Stack *stack }
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%define parse.error verbose
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%left PLUS MINUS
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%left BANG
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%left LEFT_PAREN RIGHT_PAREN
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@ -195,7 +197,7 @@ ReturnStatement : RETURN Expression
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$$ = MakeReturnVoidStatementNode();
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}
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FunctionCallExpression : Identifier LEFT_PAREN Arguments RIGHT_PAREN
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FunctionCallExpression : AccessExpression LEFT_PAREN Arguments RIGHT_PAREN
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{
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Node **arguments;
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uint32_t argumentCount;
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@ -206,9 +208,9 @@ FunctionCallExpression : Identifier LEFT_PAREN Arguments RIGHT_PAREN
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PopStackFrame(stack);
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}
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PartialStatement : AssignmentStatement
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PartialStatement : FunctionCallExpression
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| AssignmentStatement
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| VariableDeclaration
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| FunctionCallExpression
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| ReturnStatement
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;
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@ -233,6 +235,9 @@ Arguments : PrimaryExpression COMMA Arguments
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AddNode(stack, $1);
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}
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{
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PushStackFrame(stack);
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}
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;
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SignatureArguments : VariableDeclaration COMMA SignatureArguments
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