block parameters working i think

include/gravity/core.h

@@ -25,19 +25,22 @@ GravityModule gravityCreateModule(void);
 GravityBuilder gravityCreateBuilder(void);
 
 GravityFunction gravityNewFunction(GravityModule module, const char* name, GravityType functionType);
-GravityBlock gravityStartBlock(const char* name, GravityFunction function, uint16_t numBlockParams, ...);
+GravityBlock gravityStartBlock(const char* name, GravityFunction function);
 
 GravityValue newIntConstant(GravityType intType, int64_t value);
 
 GravityType gravityCreateFunctionType(int numArgs, GravityType* argTypes, GravityType returnType);
 GravityType gravityCreateIntegerType(uint8_t width, bool isSigned);
+GravityType gravityCreatePointerType(void);
 
 char* gravityModuleToCStr(GravityModule module);
 char* gravityTypeToCStr(GravityType type);
 char* gravityFunctionToCStr(GravityFunction function);
 char* gravityValueToCStr(GravityValue value);
 
-void gravityPositionBuilderAtEnd(GravityBuilder builder, GravityBlock block);
+void gravityBuilderSwitchToBlock(GravityBuilder builder, GravityBlock block);
+void gravityAppendBlockArgument(GravityBlock block, GravityType type);
+GravityValue gravityGetBlockArg(GravityBlock block, unsigned int index);
 
 GravityValue gravityNewIntConstant(GravityType intType, int64_t value);
 
@@ -46,6 +49,8 @@ GravityValue gravityBuildAlloc(GravityBuilder builder, GravityType type, const c
 void gravityBuildStore(GravityBuilder builder, GravityValue pointer, GravityValue value);
 GravityValue gravityBuildLoad(GravityBuilder builder, GravityValue pointer, const char* name);
 void gravityBuildRet(GravityBuilder builder, GravityValue returnValue);
+void gravityBuildBr(GravityBuilder builder, GravityValue condition, GravityBlock thenBranch, GravityValue* thenParams, GravityBlock elseBranch, GravityValue* elseParams);
+void gravityBuildJump(GravityBuilder builder, GravityBlock block, GravityValue* params);
 
 // ============================ //
 

src/block.c

@@ -1,16 +1,46 @@
 #include "block.h"
 
+GravityBlock gravityNewBlock(const char* name) {
+    GravityBlock newBlock = malloc(sizeof(struct GravityOpaqueBlock));
+    if (newBlock == NULL) return newBlock;
+
+    newBlock->name = strdup(name);
+
+    newBlock->params = newList(GravityBlockParam);
+    newBlock->instructions = newList(GravityInstruction);
+
+    return newBlock;
+}
+
+void gravityAppendBlockArgument(GravityBlock block, GravityType type) {
+    GravityBlockParam param = {
+        .type = type,
+        .value = gravityNewValue(NULL, type)
+    };
+
+    append(block->params, param);
+}
+
+GravityValue gravityGetBlockArg(GravityBlock block, unsigned int index) {
+    GravityBlockParam* param = get(block->params, index);
+    if (param == NULL) return NULL;
+
+    return param->value;
+}
+
 char* gravityBlockToCStr(GravityBlock block) {
     StringBuffer buff;
     initStringBuff(&buff);
 
     // print block header
     sbAppend(&buff, "%s (", block->name);
-    for (unsigned int i = 0; i < block->numParams; i++) {
-        if (i < block->numParams - 1) {
-            sbAppend(&buff, "%s, ", gravityTypeToCStr(block->paramTypes[i]));
+    for (unsigned int i = 0; i < block->params.count; i++) {
+        GravityBlockParam param = *get(block->params, i);
+
+        if (i < block->params.count - 1) {
+            sbAppend(&buff, "%s %s, ", gravityTypeToCStr(param.type), gravityValueToCStr(param.value));
         } else {
-            sbAppend(&buff, "%s", gravityTypeToCStr(block->paramTypes[i]));
+            sbAppend(&buff, "%s %s", gravityTypeToCStr(param.type), gravityValueToCStr(param.value));
         }
     }
     sbAppend(&buff, "):");
@@ -22,3 +52,4 @@ char* gravityBlockToCStr(GravityBlock block) {
 
     return buff.data;
 }
+

src/block.h

@@ -2,21 +2,29 @@
 #define __GRAVITY__BLOCK_H
 
 #include "list.h"
-#include "instruction.h"
 #include "type.h"
+#include "instruction.h"
 
 typedef struct GravityOpaqueBlock* GravityBlock;
 
+typedef struct {
+    GravityValue value;
+    GravityType type;
+} GravityBlockParam;
+
+UseList(GravityBlockParam);
 UseList(GravityInstruction);
 
 struct GravityOpaqueBlock {
     const char* name;
-    GravityType* paramTypes;
-    uint16_t numParams;
-
+    List(GravityBlockParam) params;
+    List(GravityValue) values;
     List(GravityInstruction) instructions;
 };
 
 char* gravityBlockToCStr(GravityBlock block);
+void gravityAppendBlockArgument(GravityBlock block, GravityType type);
+GravityValue gravityGetBlockArg(GravityBlock block, unsigned int index);
+GravityBlock gravityNewBlock(const char* name);
 
 #endif

src/builder.c

@@ -32,7 +32,7 @@ GravityBuilder gravityCreateBuilder(void) {
     return newBuilder;
 }
 
-void gravityPositionBuilderAtEnd(GravityBuilder builder, GravityBlock block) {
+void gravityBuilderSwitchToBlock(GravityBuilder builder, GravityBlock block) {
     builder->currentBlock = block;
 }
 
@@ -92,3 +92,28 @@ void gravityBuildRet(GravityBuilder builder, GravityValue returnValue) {
         );
     }
 }
+
+void gravityBuildBr(GravityBuilder builder, GravityValue condition, GravityBlock thenBranch, GravityValue* thenParams, GravityBlock elseBranch, GravityValue* elseParams) {
+    GravityValue thenValue = gravityNewBlockReference(thenBranch, thenParams);
+    GravityValue elseValue = gravityNewBlockReference(elseBranch, elseParams);
+
+    gravityBuildInstruction(
+        builder,
+        GravityOpcodeBranch,
+        (GravityValue[]){condition, thenValue, elseValue},
+        3,
+        NULL
+    );
+}
+
+void gravityBuildJump(GravityBuilder builder, GravityBlock block, GravityValue* params) {
+    GravityValue blockValue = gravityNewBlockReference(block, params);
+
+    gravityBuildInstruction(
+        builder,
+        GravityOpcodeJump,
+        (GravityValue[]){blockValue},
+        1,
+        NULL
+    );
+}

src/builder.h

@@ -1,7 +1,9 @@
 #ifndef __GRAVITY__BUILDER_H
 #define __GRAVITY__BUILDER_H
 
+#include "value.h"
 #include "block.h"
+#include "instruction.h"
 #include <stdlib.h>
 #include <assert.h>
 
@@ -13,11 +15,13 @@ struct GravityOpaqueBuilder {
 
 GravityBuilder gravityCreateBuilder(void);
 
-void gravityPositionBuilderAtEnd(GravityBuilder builder, GravityBlock block);
+void gravityBuilderSwitchToBlock(GravityBuilder builder, GravityBlock block);
 
 GravityValue gravityBuildAlloc(GravityBuilder builder, GravityType type, const char* name);
 void gravityBuildStore(GravityBuilder builder, GravityValue pointer, GravityValue value);
 GravityValue gravityBuildLoad(GravityBuilder builder, GravityValue pointer, const char* name);
 void gravityBuildRet(GravityBuilder builder, GravityValue returnValue);
+void gravityBuildBr(GravityBuilder builder, GravityValue condition, GravityBlock thenBranch, GravityValue* thenParams, GravityBlock elseBranch, GravityValue* elseParams);
+void gravityBuildJump(GravityBuilder builder, GravityBlock block, GravityValue* params);
 
 #endif

src/function.c

@@ -1,28 +1,9 @@
 #include "function.h"
 
-GravityBlock gravityStartBlock(const char* name, GravityFunction function, uint16_t numBlockParams, ...) {
-    GravityBlock newBlock = malloc(sizeof(struct GravityOpaqueBlock));
+GravityBlock gravityStartBlock(const char* name, GravityFunction function) {
+    GravityBlock newBlock = gravityNewBlock(name);
     if (newBlock == NULL) return newBlock;
 
-    newBlock->name = strdup(name);
-
-    GravityType* paramTypes = calloc(numBlockParams, sizeof(GravityType));
-    if (paramTypes == NULL) {
-        free(newBlock);
-        return NULL;
-    }
-
-    va_list vargs;
-    va_start(vargs, numBlockParams);
-
-    for (unsigned int i = 0; i < numBlockParams; i++) {
-        paramTypes[i] = va_arg(vargs, GravityType);
-    }
-
-    newBlock->numParams = numBlockParams;
-    newBlock->paramTypes = paramTypes;
-    newBlock->instructions = newList(GravityInstruction);
-
     append(function->blocks, newBlock);
 
     return newBlock;
@@ -37,11 +18,9 @@ char* gravityFunctionToCStr(GravityFunction function) {
     for (unsigned int i = 0; i < function->functionType.numArgs; i++) {
         if (i < function->functionType.numArgs) {
             sbAppend(&buff, "%s, ", gravityTypeToCStr(function->functionType.argTypes[i]));
-            
         } else {
             sbAppend(&buff, "%s", gravityTypeToCStr(function->functionType.argTypes[i]));
         }
-
         break;
     }
 
@@ -49,7 +28,7 @@ char* gravityFunctionToCStr(GravityFunction function) {
     sbAppend(&buff, ") %s {\n", gravityTypeToCStr(function->functionType.returnType));
     for (unsigned int i = 0; i < function->blocks.count; i++) {
         GravityBlock block = *get(function->blocks, i);
-        sbAppend(&buff, "%s\n", gravityBlockToCStr(block));
+        sbAppend(&buff, "%s\n\n", gravityBlockToCStr(block));
     }
     sbAppend(&buff, "}");
 

src/function.h

@@ -5,6 +5,7 @@
 #include "block.h"
 #include "list.h"
 #include "strb.h"
+#include "instruction.h"
 #include <stdint.h>
 #include <stdarg.h>
 #include <string.h>
@@ -19,7 +20,7 @@ struct GravityOpaqueFunction {
     const char* name;
 };
 
-GravityBlock gravityStartBlock(const char* name, GravityFunction function, uint16_t numBlockParams, ...);
+GravityBlock gravityStartBlock(const char* name, GravityFunction function);
 char* gravityFunctionToCStr(GravityFunction function);
 
 #endif

src/instruction.c

@@ -6,6 +6,8 @@ char* gravityOpcodeToCStr(GravityOpcode opcode) {
         case GravityOpcodeStore: return "store";
         case GravityOpcodeLoad: return "load";
         case GravityOpcodeRet: return "ret";
+        case GravityOpcodeBranch: return "br";
+        case GravityOpcodeJump: return "jmp";
         default: return "fixme";
     }
 }

src/instruction.h

@@ -4,19 +4,23 @@
 #include "value.h"
 #include <stddef.h>
 
+typedef struct GravityInstruction GravityInstruction;
+
 typedef enum {
     GravityOpcodeAlloc = 0,
     GravityOpcodeStore,
     GravityOpcodeLoad,
-    GravityOpcodeRet
+    GravityOpcodeRet,
+    GravityOpcodeBranch,
+    GravityOpcodeJump
 } GravityOpcode;
 
-typedef struct {
+struct GravityInstruction {
     GravityOpcode opcode;
     GravityValue* operands;
     size_t numOperands;
     GravityValue result;
-} GravityInstruction;
+};
 
 char* gravityInstructionToCStr(GravityInstruction inst);
 char* gravityOpcodeToCStr(GravityOpcode opcode);

src/type.c

@@ -52,7 +52,7 @@ char* gravityTypeToCStr(GravityType type) {
         }
 
         case GravityPointerTypeKind: {
-            sbAppend(&buff, "pointer");
+            sbAppend(&buff, "ptr");
             break;
         }
 

src/type.h

@@ -15,7 +15,8 @@ typedef enum {
     GravityFloatTypeKind,
     GravityPointerTypeKind,
     GravityFunctionTypeKind,
-    GravityTypeTypeKind, // type name
+    GravityTypeTypeKind,
+    GravityBlockTypeKind
 } GravityTypeKind;
 
 typedef struct {

src/value.c

@@ -1,4 +1,5 @@
 #include "value.h"
+#include "block.h"
 
 uint32_t globalValueIncrementer = 0;
 
@@ -6,7 +7,7 @@ char* getIncrementedName(void) {
     char* buffer = malloc(32);
     if (buffer == NULL) return buffer;
 
-    snprintf(buffer, 32, "%%%d", globalValueIncrementer);
+    snprintf(buffer, 32, "%d", globalValueIncrementer);
 
     globalValueIncrementer++;
 
@@ -43,14 +44,17 @@ GravityValue gravityTypeToTypeValue(GravityType type) {
 }
 
 char* gravityValueToCStr(GravityValue value) {
-    switch (value->kind) {
-        case GravityLocalValueKind:
+    StringBuffer buff;
+    initStringBuff(&buff);
 
-            return strdup(value->name);
+    switch (value->kind) {
+        case GravityLocalValueKind: {
+            sbAppend(&buff, "%%%s", value->name);
+            break;
+        }
 
         case GravityConstantValueKind: {
-            StringBuffer buff;
-            initStringBuff(&buff);
+            
 
             switch (value->type->typeKind) {
                 case GravityIntTypeKind: {
@@ -63,14 +67,36 @@ char* gravityValueToCStr(GravityValue value) {
                     break;
                 }
 
+                case GravityBlockTypeKind: {
+                    GravityBlock actualBlock = ((GravityBlock)value->constant.blockValue.block);
+                    sbAppend(&buff, "%s(", actualBlock->name);
+
+                    GravityValue* blockParams = value->constant.blockValue.params;
+
+                    for (unsigned int i = 0; i < actualBlock->params.count; i++) {
+                        GravityValue paramValue = blockParams[i];
+
+                        if (i < actualBlock->params.count - 1) {
+                            sbAppend(&buff, "%s, ", gravityValueToCStr(paramValue));
+                        } else {
+                            sbAppend(&buff, "%s", gravityValueToCStr(paramValue));
+                        }
+                    }
+
+                    sbAppend(&buff, ")");
+
+                    break;
+                }
+
                 default: assert(false);
             }
-
-            return buff.data;
+            break;
         }
 
         default: assert(false);
     }
+
+    return buff.data;
 }
 
 GravityValue gravityNewConstant(GravityType type) {
@@ -94,3 +120,37 @@ GravityValue gravityNewIntConstant(GravityType intType, int64_t value) {
 
     return newValue;
 }
+
+GravityValue gravityNewBlockReference(void* block, GravityValue* passedParams) {
+    GravityType blockType = gravityCreateType();
+    blockType->typeKind = GravityBlockTypeKind;
+
+    GravityValue newValue = gravityNewConstant(blockType);
+    if (newValue == NULL) return newValue;
+
+    // create copy so we don't have issues with stack lifetimes
+    size_t numParams = ((GravityBlock)block)->params.count;
+
+    if (numParams == 0) {
+        newValue->constant.blockValue.params = NULL;
+    } else {
+        GravityValue* passedParamsCopy = calloc(numParams, sizeof(GravityValue));
+
+        if (passedParamsCopy == NULL) {
+            gravityFreeValue(newValue);
+            return NULL;
+        }
+
+        memcpy(passedParamsCopy, passedParams, sizeof(GravityValue) * numParams);
+        newValue->constant.blockValue.params = passedParamsCopy;
+    }
+    
+    // fill in values
+    newValue->constant.blockValue.block = block;
+
+    return newValue;
+}
+
+void gravityFreeValue(GravityValue value) {
+    free(value);
+}

src/value.h

@@ -6,13 +6,18 @@
 extern uint32_t globalValueIncrementer;
 
 typedef struct GravityOpaqueValue* GravityValue;
-typedef struct GravityOpaqueConstant* GravityConstant;
+UseList(GravityValue);
 
 typedef enum {
     GravityLocalValueKind,
     GravityConstantValueKind
 } GravityValueKind;
 
+typedef struct {
+    void* block;
+    GravityValue* params;
+} GravityBlockReference;
+
 struct GravityOpaqueValue {
     GravityValueKind kind;
     GravityType type;
@@ -20,21 +25,18 @@ struct GravityOpaqueValue {
 
     union {
         int64_t intValue;
+        GravityBlockReference blockValue;
     } constant;
 };
 
-struct GravityOpaqueConstant {
-    GravityType type;
-    union {
-        int64_t intValue;
-    };
-};
-
 GravityValue gravityNewValue(const char* name, GravityType type);
 GravityValue gravityTypeToTypeValue(GravityType type);
 char* gravityValueToCStr(GravityValue value);
 
 GravityValue gravityNewConstant(GravityType type);
 GravityValue gravityNewIntConstant(GravityType intType, int64_t value);
+GravityValue gravityNewBlockReference(void* block, GravityValue* passedParams);
+
+void gravityFreeValue(GravityValue value);
 
 #endif

test.c

@@ -6,19 +6,42 @@ int main(void) {
     GravityBuilder builder = gravityCreateBuilder();
 
     GravityType charType = gravityCreateIntegerType(8, false);
+    GravityType ptrType = gravityCreatePointerType();
     
     GravityType mainFuncType = gravityCreateFunctionType(0, NULL, charType);
     GravityFunction mainFunc = gravityNewFunction(module, "main", mainFuncType);
-    GravityBlock entryBlock = gravityStartBlock("entry", mainFunc, 0);
+    GravityBlock entryBlock = gravityStartBlock("entry", mainFunc);
 
-    gravityPositionBuilderAtEnd(builder, entryBlock);
-    GravityValue someVar = gravityBuildAlloc(builder, charType, NULL);
+    // define blocks
+    GravityBlock thenBlock = gravityStartBlock("then", mainFunc);
+    gravityAppendBlockArgument(thenBlock, ptrType);
 
-    GravityValue someConstant = gravityNewIntConstant(charType, 123);
-    gravityBuildStore(builder, someVar, someConstant);
+    GravityBlock elseBlock = gravityStartBlock("else", mainFunc);
+    gravityAppendBlockArgument(elseBlock, ptrType);
 
-    GravityValue output = gravityBuildLoad(builder, someVar, NULL);
-    gravityBuildRet(builder, output);
+    GravityBlock mergeBlock = gravityStartBlock("merge", mainFunc);
+
+    // write entry
+    gravityBuilderSwitchToBlock(builder, entryBlock);
+    GravityValue x = gravityBuildAlloc(builder, charType, "x");
+
+    gravityBuildBr(builder, gravityNewIntConstant(charType, 1), thenBlock, (GravityValue[]){x}, elseBlock, (GravityValue[]){x});
+
+    // then block
+    gravityBuilderSwitchToBlock(builder, thenBlock);
+    GravityValue thenValue = gravityGetBlockArg(thenBlock, 0);
+    gravityBuildStore(builder, thenValue, gravityNewIntConstant(charType, 5));
+    gravityBuildJump(builder, mergeBlock, NULL);
+
+    // else block
+    gravityBuilderSwitchToBlock(builder, elseBlock);
+    GravityValue elseValue = gravityGetBlockArg(elseBlock, 0);
+    gravityBuildStore(builder, elseValue, gravityNewIntConstant(charType, 10));
+    gravityBuildJump(builder, mergeBlock, NULL);
+    
+    gravityBuilderSwitchToBlock(builder, mergeBlock);
+    GravityValue xValue = gravityBuildLoad(builder, x, "xValue");
+    gravityBuildRet(builder, xValue);
 
     printf("%s\n", gravityFunctionToCStr(mainFunc));