Merge pull request #96 from algosup/dev

Add conditional goto

CMakeLists.txt

@@ -14,7 +14,7 @@ set(CMAKE_C_COMPILER "gcc")
 
 project(
   Interpreter-AT2
-  VERSION 1.0.0
+  VERSION 1.1.0
   LANGUAGES CXX C
 )
 
@@ -27,6 +27,8 @@ add_executable(tests
   src/debug.c
   src/error.c
   src/binExporter.c
+  src/vProc.c
+  src/vTerminal.c
   test/test.cc
   src/ast.c
   googletest/googletest/src/gtest-all.cc

src/2at2.c

@@ -13,7 +13,7 @@
 #include "error.h"
 #include "binExporter.h"
 
-#define VERSION "1.0.0"
+#define VERSION "1.1.0"
 #define BIN_NAME "bin.2at2"
 
 int main(int argc, char *argv[]) {
@@ -99,7 +99,7 @@ int main(int argc, char *argv[]) {
     // ---------- Assemble ----------
 
     // run exporter
-    exportToBin(instList, BIN_NAME, varList, errData);
+    exportToBin(instList, BIN_NAME, errData);
 
     // Stop if there are errors
     if(errData->errors > 0){

src/ast.c

@@ -20,12 +20,6 @@ char *getIntCode(enum interruptKind kind, asm_error_t *errData){
             return "1";
         case INT_OB1:
             return "2";
-        case INT_OR:
-            return "3";
-        case INT_AND:
-            return "4";
-        case INT_XOR:
-            return "5";
         case INT_LT:
             return "6";
         case INT_LTE:
@@ -44,10 +38,6 @@ char *getIntCode(enum interruptKind kind, asm_error_t *errData){
             return "13";
         case INT_MOV_F_REG:
             return "14";
-        case INT_ELSE:
-            return "15";
-        case INT_END:
-            return "16";
         default:
             errorIntCodeNotSupported(kind, errData);
             return NULL;

src/ast.h

@@ -46,9 +46,6 @@ enum interruptKind{
     INT_EXIT,
     INT_DRAW,
     INT_OB1,
-    INT_OR,
-    INT_AND,
-    INT_XOR,
     INT_LT,
     INT_LTE,
     INT_GT,
@@ -58,8 +55,6 @@ enum interruptKind{
     INT_PUSHA,
     INT_POPA,
     INT_MOV_F_REG,
-    INT_ELSE,
-    INT_END,
 };
 
 // Register names

src/binExporter.c

@@ -11,7 +11,7 @@
 #include "error.h"
 #include "debug.h"
 
-void exportToBin(instList_t *nodeList, char *filename, varList_t *varList, asm_error_t *errData){
+void exportToBin(instList_t *nodeList, char *filename, asm_error_t *errData){
     // Open the file
     FILE *file = fopen(filename, "wb");
 
@@ -158,12 +158,6 @@ char *interToBinCode(enum interruptKind inter){
         return "00000001";
     case INT_OB1:
         return "00000010";
-    case INT_OR:
-        return "00000011";
-    case INT_AND:
-        return "00000100";
-    case INT_XOR:
-        return "00000101";
     case INT_LT:
         return "00000110";
     case INT_LTE:
@@ -182,10 +176,6 @@ char *interToBinCode(enum interruptKind inter){
         return "00001101";
     case INT_MOV_F_REG:
         return "00001110";
-    case INT_ELSE:
-        return "00001111";
-    case INT_END:
-        return "00010000";
     default:
         return NULL;
     }

src/binExporter.h

@@ -11,10 +11,9 @@ extern "C" {
     params:
         nodeList: pointer to the instruction list
         filename: name of the file
-        varList: pointer to the variable list
         errData: pointer to the error struct    
 */
-void exportToBin(instList_t *nodeList, char *filename, varList_t *varList, asm_error_t *errData);
+void exportToBin(instList_t *nodeList, char *filename, asm_error_t *errData);
 
 /*
     Convert an operation to its binary code

src/builder.c

@@ -37,7 +37,7 @@ void buildNode(instNode_t *node, varList_t *varList, labelList_t *labeList, asm_
             buildCall(node, labeList, errData);
             break;
         case OP_INT:
-            node->isBuilt = true;
+            node->isBuilt = buildIntOpe(node, errData);
             break;
         case OP_B_XOR: case OP_DIV: case OP_ADD: case OP_SUB: case OP_MUL: case OP_R_SHIFT: case OP_L_SHIFT: case OP_B_AND: case OP_B_OR: case OP_B_NOT: case OP_MOD:
             buildOperation(node, varList, errData);
@@ -474,4 +474,19 @@ int getVarDatasize(char *str){
     else{
         return (int)strlen(str);
     }
+}
+
+bool buildIntOpe(instNode_t *node, asm_error_t *errData){
+    switch (node->inter)
+    {
+    case INT_LT: case INT_GT: case INT_LTE: case INT_GTE: case INT_EQ: case INT_NEQ:
+        // check if next node is a goto
+        if(node->next == NULL || node->next->op != OP_GOTO){
+            errorIfInt(node->lineNb, errData);
+            return false;
+        }
+        return true;    
+    default:
+        return true;
+    }
 }

src/builder.h

@@ -99,6 +99,16 @@ enum regKind getRegKind(char *str, long lineNb, asm_error_t *errData);
 */
 int getVarDatasize(char *str);
 
+/*
+    build interrupt operation
+    params:
+        node: pointer to the instruction node
+        errData: pointer to the error struct
+    returns:
+        bool: true if the operation was built
+*/
+bool buildIntOpe(instNode_t *node, asm_error_t *errData);
+
 #ifdef __cplusplus
 }
 #endif

src/debug.c

@@ -113,12 +113,6 @@ char *getInterName(enum interruptKind kind){
             return "DRAW";
         case INT_OB1:
             return "OB1";
-        case INT_OR:
-            return "OR";
-        case INT_AND:
-            return "AND";
-        case INT_XOR:
-            return "XOR";
         case INT_LT:
             return "LT";
         case INT_LTE:
@@ -137,10 +131,6 @@ char *getInterName(enum interruptKind kind){
             return "POPA";
         case INT_MOV_F_REG:
             return "MOV_F_REG";
-        case INT_ELSE:
-            return "ELSE";
-        case INT_END:
-            return "END";
         default:
             return "UNKNOWN";
     }

src/error.c

@@ -475,4 +475,13 @@ void errorOverflow(asm_error_t *errData){
     char *errType = "Overflow";
     char *errDetails = "The value is too large";
     displayError(errType, errDetails, NULL, errorFile, errData);
+}
+
+void errorIfInt(long lineNb, asm_error_t *errData){
+    char *errType = "Interrupt Error";
+    char errDetails[64];
+    char errLocation[64];
+    sprintf(errDetails, "If interrupt must be followed by goto instruction");
+    sprintf(errLocation, "File %s, line %ld", errData->inputFile, lineNb);
+    displayError(errType, errDetails, errLocation, errorFile, errData);
 }

src/error.h

@@ -381,6 +381,14 @@ void errorReadOnly(asm_error_t *errData);
 */
 void errorOverflow(asm_error_t *errData);
 
+/*
+    Display error messages for invalid if statement
+    params:
+        lineNb: Line number
+        errData: Error history
+*/
+void errorIfInt(long lineNb, asm_error_t *errData);
+
 #ifdef __cplusplus
 }
-#endif
+#endif

src/parser.c

@@ -282,21 +282,6 @@ bool isOp(char *inst, instNode_t *newNode, varList_t *varList, labelList_t *labe
         newNode->isInter = true;
         newNode->inter = INT_OB1;
     }
-    else if(strcmp(inst, "if_or") == 0){
-        newNode->op = OP_INT;
-        newNode->isInter = true;
-        newNode->inter = INT_OR;
-    }
-    else if(strcmp(inst, "if_and") == 0){
-        newNode->op = OP_INT;
-        newNode->isInter = true;
-        newNode->inter = INT_AND;
-    }
-    else if(strcmp(inst, "if_xor") == 0){
-        newNode->op = OP_INT;
-        newNode->isInter = true;
-        newNode->inter = INT_XOR;
-    }
     else if(strcmp(inst, "if_lt") == 0){
         newNode->op = OP_INT;
         newNode->isInter = true;
@@ -337,16 +322,6 @@ bool isOp(char *inst, instNode_t *newNode, varList_t *varList, labelList_t *labe
         newNode->isInter = true;
         newNode->inter = INT_POPA;
     }
-    else if(strcmp(inst, "else") == 0){
-        newNode->op = OP_INT;
-        newNode->isInter = true;
-        newNode->inter = INT_ELSE;
-    }
-    else if(strcmp(inst, "end") == 0){
-        newNode->op = OP_INT;
-        newNode->isInter = true;
-        newNode->inter = INT_END;
-    }
     else{
         errorInstruction(inst, newNode->lineNb, errData);
         return false;

src/vProc.c

@@ -21,6 +21,8 @@ int lastVarIdx = 0;
 fpos_t cursorPos[MAX_CALL_STACK];
 int callStackSize = 0;
 
+bool allowGoto = true;
+
 // registers
 vRegister_t rg0 = {true, 0};
 vRegister_t rg1 = {true, 0};
@@ -106,6 +108,10 @@ bool run(instruction_t inst, carry_t *carry, FILE *file, char *filename, asm_err
             reg->value = inst.arg;
             return true;
         case 1: //goto
+            if(!allowGoto){
+                allowGoto = true;
+                return true;
+            }
             pos = searchLabel(inst.arg, filename, errData);
             // goto label
             fsetpos(file, &pos);
@@ -283,23 +289,41 @@ bool runInt(instruction_t inst, carry_t *carry){
             return true;
         case 2: // ob1
             return true;
-        case 3: // cmp or
-            return true;
-        case 4: // cmp and
-            return true;
-        case 5: // cmp xor
-            return true;
         case 6: // cmp less than
+            if(!(rg0.value < rg1.value))
+            {
+                allowGoto = false;
+            }
             return true;
         case 7: // cmp less than or equal
+            if(!(rg0.value <= rg1.value))
+            {
+                allowGoto = false;
+            }
             return true;
         case 8: // cmp greater than
+            if(!(rg0.value > rg1.value))
+            {
+                allowGoto = false;
+            }
             return true;
         case 9: // cmp greater than or equal
+            if(!(rg0.value >= rg1.value))
+            {
+                allowGoto = false;
+            }
             return true;
         case 10: // cmp equal
+            if(!(rg0.value == rg1.value))
+            {
+                allowGoto = false;
+            }
             return true;
         case 11: // cmp not equal
+            if(!(rg0.value != rg1.value))
+            {
+                allowGoto = false;
+            }
             return true;
         case 12: // pusha
             return true;
@@ -310,10 +334,6 @@ bool runInt(instruction_t inst, carry_t *carry){
             carry->nextArg = getRegister(inst.reg)->value;
             carry->isUsed = true;
             return true;
-        case 15: // else
-            return true;
-        case 16: // end
-            return true;
         default:
             exit(EXIT_FAILURE);
     }

src/vTerminal.c

@@ -8,7 +8,7 @@
 
 #include "vTerminal.h"
 
-#define VERSION "1.0.0"
+#define VERSION "1.1.0"
 
 void runVTerminal(asm_error_t *errData){
     char *command = (char *)malloc(100 * sizeof(char));