Expose GroundScope struct

Reviewed-on: #19

README.md

@@ -75,7 +75,7 @@ build
         - [x] String operations
     - [x] Maths
     - [x] Comparisions
-    - [ ] Type conversions
+    - [x] Type conversions
     - [x] Functions
         - [x] Define functions
         - [x] Call functions
@@ -83,7 +83,7 @@ build
         - [x] Arguments for functions
         - [x] Jumping within functions
     - [x] Custom data structures
-    - [ ] Working with external libraries
+    - [x] Working with external libraries
 
 ## Debugger
 

docs/syntax.md

@@ -362,3 +362,23 @@ Looks in the path $GROUND_LIBS/`$libraryName`.grnd for the library. ($GROUND_LIB
 Attempts to import a shared library written in a compiled language like C or C++ for usage within the current program.
 
 Looks in the path $GROUND_LIBS/`$libraryName`.so for the library. ($GROUND_LIBS is a system environment variable.)
+
+### Data Structures
+
+#### struct -structName
+
+Creates a new struct which can be initialised. Until the endstruct keyword, the only valid instructions are init, set, fun, endfun, struct, and endstruct.
+
+Any value created inside the struct will be added to the struct.
+
+#### endstruct
+
+Ends the creation of a struct.
+
+#### getfield $object &fieldName &outputVar
+
+Gets a field from an initialised object. fieldName must be a valid name of a field in the object. Errors if the field does not exist. 
+
+#### setfield &object &fieldName $value
+
+Sets a field to a new value in the object. The value must be of the same type as the field's old value.

include/groundvm.h

@@ -1,5 +1,6 @@
 #ifndef LIBGROUND_H
 #define LIBGROUND_H
+#define MAX_ID_LEN 64
 
 /*
  * groundvm.h 
@@ -13,8 +14,9 @@
 #include <stdarg.h>
 #include <uthash.h>
 
+
 typedef enum GroundInstType {
-    IF, JUMP, END, INPUT, PRINT, PRINTLN, SET, GETTYPE, EXISTS, SETLIST, SETLISTAT, GETLISTAT, GETLISTSIZE, LISTAPPEND, GETSTRSIZE, GETSTRCHARAT, ADD, SUBTRACT, MULTIPLY, DIVIDE, EQUAL, INEQUAL, NOT, GREATER, LESSER, STOI, STOD, TOSTRING, FUN, RETURN, ENDFUN, PUSHARG, CALL, STRUCT, ENDSTRUCT, INIT, GETFIELD, SETFIELD, USE, EXTERN, CREATELABEL, PAUSE, DROP, ERRORCMD
+    IF, JUMP, END, INPUT, PRINT, PRINTLN, SET, GETTYPE, EXISTS, SETLIST, SETLISTAT, GETLISTAT, GETLISTSIZE, LISTAPPEND, GETSTRSIZE, GETSTRCHARAT, ADD, SUBTRACT, MULTIPLY, DIVIDE, EQUAL, INEQUAL, NOT, GREATER, LESSER, STOI, STOD, ITOC, CTOI, TOSTRING, FUN, RETURN, ENDFUN, PUSHARG, CALL, STRUCT, ENDSTRUCT, INIT, GETFIELD, SETFIELD, USE, EXTERN, CREATELABEL, PAUSE, DROP, ERRORCMD
 } GroundInstType;
 
 typedef enum GroundValueType {
@@ -164,6 +166,24 @@ typedef struct GroundObject {
     GroundObjectField* fields;
 } GroundObject;
 
+typedef struct GroundLabel {
+    char id[MAX_ID_LEN];
+    int lineNum;
+    UT_hash_handle hh;
+} GroundLabel;
+
+typedef struct GroundVariable {
+    char id[MAX_ID_LEN];
+    GroundValue value;
+    UT_hash_handle hh;
+} GroundVariable;
+
+typedef struct GroundScope {
+    GroundLabel** labels;
+    GroundVariable** variables;
+    bool isMainScope;
+} GroundScope;
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -179,6 +199,8 @@ void groundAddValueToInstruction(GroundInstruction* inst, GroundValue value);
 void groundAddReferenceToInstruction(GroundInstruction* inst, GroundArg value);
 GroundArg groundCreateReference(GroundArgType type, char* ref);
 
+void groundAddValueToScope(GroundScope* gs, const char* name, GroundValue value);
+
 GroundValue groundCreateValue(GroundValueType type, ...);
 
 GroundProgram groundParseFile(const char* code);

src/interpreter.c

@@ -5,7 +5,9 @@
 #include <inttypes.h>
 #include <stdlib.h>
 #include <string.h>
+#ifndef _WIN32
 #include <dlfcn.h>
+#endif
 #include <stdarg.h>
 #include <unistd.h>
 
@@ -443,6 +445,7 @@ GroundStruct parseStruct(GroundProgram* in, GroundScope* scope, size_t errorOffs
                     addInstructionToProgram(&gp, in->instructions[i]);
                     i++;
                 }
+                i--;
 
                 GroundFunction* function = parseFunction(&gp, errorOffset);
                 function->startLine = i;
@@ -509,6 +512,7 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
                 addInstructionToProgram(&gp, in->instructions[i]);
                 i++;
             }
+            i--;
 
             GroundFunction* function = parseFunction(&gp, errorOffset);
             function->startLine = i;
@@ -546,6 +550,7 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
                 addInstructionToProgram(&gp, in->instructions[i]);
                 i++;
             }
+            i--;
 
             GroundValue gv = {
                 .type = STRUCTVAL,
@@ -1104,7 +1109,7 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             if (in->args.args[1].type != DIRREF) {
                 runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 2", in, currentInstruction);
             }
-            addVariable(scope->variables, in->args.args[2].value.refName, createIntGroundValue(atoll(in->args.args[0].value.value.data.stringVal)));
+            addVariable(scope->variables, in->args.args[1].value.refName, createIntGroundValue(atoll(in->args.args[0].value.value.data.stringVal)));
             break;
         }
         case STOD: {
@@ -1120,7 +1125,39 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             if (in->args.args[1].type != DIRREF) {
                 runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 2", in, currentInstruction);
             }
-            addVariable(scope->variables, in->args.args[1].value.refName, createIntGroundValue(atof(in->args.args[0].value.value.data.stringVal)));
+            addVariable(scope->variables, in->args.args[1].value.refName, createDoubleGroundValue(atof(in->args.args[0].value.value.data.stringVal)));
+            break;
+        }
+        case ITOC: {
+            if (in->args.length < 2) {
+                runtimeError(TOO_FEW_ARGS, "Expecting 2 args", in, currentInstruction);
+            }
+            if (in->args.length > 2) {
+                runtimeError(TOO_MANY_ARGS, "Expecting 2 args", in, currentInstruction);
+            }
+            if (in->args.args[0].type != VALUE || in->args.args[0].value.value.type != INT) {
+                runtimeError(ARG_TYPE_MISMATCH, "Expecting an Int for arg 1", in, currentInstruction);
+            }
+            if (in->args.args[1].type != DIRREF) {
+                runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 2", in, currentInstruction);
+            }
+            addVariable(scope->variables, in->args.args[1].value.refName, createCharGroundValue((char)in->args.args[0].value.value.data.intVal));
+            break;
+        }
+        case CTOI: {
+            if (in->args.length < 2) {
+                runtimeError(TOO_FEW_ARGS, "Expecting 2 args", in, currentInstruction);
+            }
+            if (in->args.length > 2) {
+                runtimeError(TOO_MANY_ARGS, "Expecting 2 args", in, currentInstruction);
+            }
+            if (in->args.args[0].type != VALUE || in->args.args[0].value.value.type != CHAR) {
+                runtimeError(ARG_TYPE_MISMATCH, "Expecting a Char for arg 1", in, currentInstruction);
+            }
+            if (in->args.args[1].type != DIRREF) {
+                runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 2", in, currentInstruction);
+            }
+            addVariable(scope->variables, in->args.args[1].value.refName, createIntGroundValue((int)in->args.args[0].value.value.data.charVal));
             break;
         }
         case TOSTRING: {
@@ -1137,57 +1174,53 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
                 runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 2", in, currentInstruction);
             }
             GroundValue* value = &in->args.args[0].value.value;
+            char buf[256];
             switch (value->type) {
                 case INT: {
-                    char* buf = malloc(sizeof(char) * 256);
-                    snprintf(buf, sizeof(char) * 256, "%" PRId64, value->data.intVal);
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue(buf));
+                    snprintf(buf, sizeof(buf) * 256, "%" PRId64, value->data.intVal);
                     break;
                 }
                 case DOUBLE: {
-                    char* buf = malloc(sizeof(char) * 256);
-                    snprintf(buf, sizeof(char) * 256, "%f", value->data.doubleVal);
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue(buf));
+                    snprintf(buf, sizeof(buf) * 256, "%f", value->data.doubleVal);
                     break;
                 }
                 case STRING: {
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue(value->data.stringVal));
+                    snprintf(buf, sizeof(buf), "%s", value->data.stringVal);
                     break;
                 }
                 case CHAR: {
-                    char* buf = malloc(sizeof(char) * 2);
                     buf[0] = value->data.charVal;
                     buf[1] = '\0';
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue(buf));
                     break;
                 }
                 case BOOL: {
                     if (value->data.boolVal) {
-                        addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("true"));
+                        snprintf(buf, sizeof(buf), "true");
                     } else {
-                        addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("false"));
+                        snprintf(buf, sizeof(buf), "false");
                     }
                     break;
                 }
                 case LIST: {
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("<list>"));
+                    snprintf(buf, sizeof(buf), "<list>");
                     break;
                 }
                 case FUNCTION: {
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("<function>"));
+                    snprintf(buf, sizeof(buf), "<function>");
                     break;
                 }
                 case CUSTOM: {
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("<custom>"));
+                    snprintf(buf, sizeof(buf), "<custom>");
                     break;
                 }
                 case NONE:
                 default: {
-                    addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue("<default>"));
+                    snprintf(buf, sizeof(buf), "<default>");
                     break;
 
                 }
             }
+            addVariable(scope->variables, in->args.args[1].value.refName, createStringGroundValue(buf));
 
             break;
         }
@@ -1894,6 +1927,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
         }
 
         case EXTERN: {
+	    #ifdef _WIN32
+	    runtimeError(FIXME, "No Windows support for extern, sucker", in, currentInstruction);
+	    #endif
+	    #ifndef _WIN32
             if (in->args.length < 1) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 1 arg", in, currentInstruction);
             }
@@ -1943,6 +1980,7 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             }
             
             initFn(scope);
+	    #endif
             break;
         }
 

src/main.c

@@ -1,6 +1,7 @@
 #include "parser.h"
 #include "interpreter.h"
 #include "compiler.h"
+#include "types.h"
 #include <stdio.h>
 
 char* getFileContents(const char* filename) {
@@ -40,19 +41,6 @@ char* getFileContents(const char* filename) {
 }
 
 int main(int argc, char** argv) {
-    /*
-    if (argc < 2) {
-        printf("Usage: ground [file]\n");
-        exit(1);
-    }
-    char* file = getFileContents(argv[1]);
-    GroundProgram program = parseFile(file);
-    free(file);
-    char* compiled = compileGroundProgram(&program);
-    printf("%s\n", compiled);
-    interpretGroundProgram(&program, NULL);
-    */
-
     if (argc < 2) {
         printf("Usage: %s <file> [-c] [--compile] [-h] [--help]\n", argv[0]);
         exit(1);
@@ -60,7 +48,7 @@ int main(int argc, char** argv) {
 
     bool compile = false;
     char* fileName = NULL;
-
+    List groundArgs = createList();
     for (int i = 1; i < argc; i++) {
         if (strcmp("--compile", argv[i]) == 0 || strcmp("-c", argv[i]) == 0) {
             compile = true;
@@ -73,7 +61,11 @@ int main(int argc, char** argv) {
             printf("  -h or --help: Shows this help message\n");
             exit(0);
         } else {
-            fileName = argv[i];
+            if (fileName == NULL) {
+                fileName = argv[i];
+            } else {
+                appendToList(&groundArgs, createStringGroundValue(argv[i]));
+            }
         }
     }
 
@@ -91,6 +83,14 @@ int main(int argc, char** argv) {
         char* compiled = compileGroundProgram(&program);
         printf("%s\n", compiled);
     } else {
-        interpretGroundProgram(&program, NULL);
+        GroundVariable* variables = NULL;
+        GroundLabel* labels = NULL;
+
+        GroundScope scope;
+        scope.variables = &variables;
+        scope.labels = &labels;
+        scope.isMainScope = true;
+        addVariable(scope.variables, "CMDLINE_ARGS", createListGroundValue(groundArgs));
+        interpretGroundProgram(&program, &scope);
     }
 }

src/parser.c

@@ -5,6 +5,25 @@
 #include <string.h>
 #include <ctype.h>
 
+#ifdef _WIN32
+size_t strnlen(const char *src, size_t n) {
+    size_t len = 0;
+    while (len < n && src[len])
+        len++;
+    return len;
+}
+
+char* strndup(const char *s, size_t n) {
+    size_t len = strnlen(s, n);
+    char *p = malloc(len + 1);
+    if (p) {
+        memcpy(p, s, len);
+        p[len] = '\0';
+    }
+    return p;
+}
+#endif
+
 GroundProgram createGroundProgram() {
     GroundProgram gp;
     gp.size = 0;
@@ -159,6 +178,8 @@ static GroundInstType getInstructionType(const char* inst) {
     if (strcmp(inst, "lesser") == 0) return LESSER;
     if (strcmp(inst, "stoi") == 0) return STOI;
     if (strcmp(inst, "stod") == 0) return STOD;
+    if (strcmp(inst, "ctoi") == 0) return CTOI;
+    if (strcmp(inst, "itoc") == 0) return ITOC;
     if (strcmp(inst, "tostring") == 0) return TOSTRING;
     if (strcmp(inst, "fun") == 0) return FUN;
     if (strcmp(inst, "return") == 0) return RETURN;

src/types.c

@@ -90,16 +90,55 @@ GroundValue copyGroundValue(const GroundValue* gv) {
         }
         case FUNCTION: newGv.data.fnVal = gv->data.fnVal; break;
         case STRUCTVAL: {
-            // do this later lmao
-            // FIXME
-            newGv.data.structVal = gv->data.structVal;
+            newGv.data.structVal = malloc(sizeof(GroundStruct));
+            if (newGv.data.structVal == NULL) {
+                printf("Couldn't allocate memory for GroundStruct copy\n");
+                exit(1);
+            }
+            
+            newGv.data.structVal->size = gv->data.structVal->size;
+            newGv.data.structVal->fields = malloc(gv->data.structVal->size * sizeof(GroundStructField));
+            if (newGv.data.structVal->fields == NULL && gv->data.structVal->size > 0) {
+                printf("Couldn't allocate memory for GroundStruct fields copy\n");
+                exit(1);
+            }
+            
+            for (size_t i = 0; i < gv->data.structVal->size; i++) {
+                strncpy(newGv.data.structVal->fields[i].id, 
+                        gv->data.structVal->fields[i].id, 
+                        sizeof(newGv.data.structVal->fields[i].id) - 1);
+                newGv.data.structVal->fields[i].id[sizeof(newGv.data.structVal->fields[i].id) - 1] = '\0';
+                
+                newGv.data.structVal->fields[i].value = copyGroundValue(&gv->data.structVal->fields[i].value);
+            }
             break;
         }
-        case CUSTOM:
-            // also do this later
-            // FIXME
-            newGv.data.customVal = gv->data.customVal;
+        case CUSTOM: {
+            newGv.customType = gv->customType;
+            newGv.data.customVal = malloc(sizeof(GroundObject));
+            if (newGv.data.customVal == NULL) {
+                printf("Couldn't allocate memory for GroundObject copy\n");
+                exit(1);
+            }
+            
+            newGv.data.customVal->fields = NULL;
+            
+            GroundObjectField *field, *tmp;
+            HASH_ITER(hh, gv->data.customVal->fields, field, tmp) {
+                GroundObjectField* newField = malloc(sizeof(GroundObjectField));
+                if (newField == NULL) {
+                    printf("Couldn't allocate memory for GroundObjectField copy\n");
+                    exit(1);
+                }
+                
+                strncpy(newField->id, field->id, sizeof(newField->id) - 1);
+                newField->id[sizeof(newField->id) - 1] = '\0';
+                newField->value = copyGroundValue(&field->value);
+                
+                HASH_ADD_STR(newGv.data.customVal->fields, id, newField);
+            }
             break;
+        }
         case NONE:
         default: {
 
@@ -149,8 +188,47 @@ void printGroundValue(GroundValue* gv) {
             printf("<function>");
             break;
         }
-        default: {
-            printf("FIXME");
+        case STRUCTVAL: {
+            printf("<struct fields: { ");
+            for (size_t i = 0; i < gv->data.structVal->size; i++) {
+                if (i != 0) {
+                    printf(", ");
+                }
+                printf("%s: ", gv->data.structVal->fields[i].id);
+                if (gv->data.structVal->fields[i].value.type == STRING) {
+                    printf("\"");
+                    printGroundValue(&gv->data.structVal->fields[i].value);
+                    printf("\"");
+                } else {
+                    printGroundValue(&gv->data.structVal->fields[i].value);
+                }
+            }
+            printf(" }>");
+            break;
+        }
+        case CUSTOM: {
+            printf("<object fields: { ");
+            for (size_t i = 0; i < gv->customType->size; i++) {
+                if (i != 0) {
+                    printf(", ");
+                }
+                printf("%s: ", gv->customType->fields[i].id);
+                GroundObjectField* field = findField(*gv->data.customVal, gv->customType->fields[i].id);
+                if (field == NULL) {
+                    printf("<missing>");
+                } else {
+                    printGroundValue(&field->value);
+                }
+            }
+            printf(" }>");
+            break;
+        }
+        case ERROR: {
+            printf("<error type: %s, what: %s>", gv->data.errorVal.type, gv->data.errorVal.what);
+            break;
+        }
+        case NONE: {
+            printf("<none>");
             break;
         }
     }
@@ -374,6 +452,12 @@ void printGroundInstruction(GroundInstruction* gi) {
         case STOD:
             printf("stod");
             break;
+        case CTOI:
+            printf("ctoi");
+            break;
+        case ITOC:
+            printf("itoc");
+            break;
         case TOSTRING:
             printf("tostring");
             break;

src/types.h

@@ -9,7 +9,7 @@
 #include "include/uthash.h"
 
 typedef enum GroundInstType {
-    IF, JUMP, END, INPUT, PRINT, PRINTLN, SET, GETTYPE, EXISTS, SETLIST, SETLISTAT, GETLISTAT, GETLISTSIZE, LISTAPPEND, GETSTRSIZE, GETSTRCHARAT, ADD, SUBTRACT, MULTIPLY, DIVIDE, EQUAL, INEQUAL, NOT, GREATER, LESSER, STOI, STOD, TOSTRING, FUN, RETURN, ENDFUN, PUSHARG, CALL, STRUCT, ENDSTRUCT, INIT, GETFIELD, SETFIELD, USE, EXTERN, CREATELABEL, PAUSE, DROP, ERRORCMD
+    IF, JUMP, END, INPUT, PRINT, PRINTLN, SET, GETTYPE, EXISTS, SETLIST, SETLISTAT, GETLISTAT, GETLISTSIZE, LISTAPPEND, GETSTRSIZE, GETSTRCHARAT, ADD, SUBTRACT, MULTIPLY, DIVIDE, EQUAL, INEQUAL, NOT, GREATER, LESSER, STOI, STOD, ITOC, CTOI, TOSTRING, FUN, RETURN, ENDFUN, PUSHARG, CALL, STRUCT, ENDSTRUCT, INIT, GETFIELD, SETFIELD, USE, EXTERN, CREATELABEL, PAUSE, DROP, ERRORCMD
 } GroundInstType;
 
 typedef enum GroundValueType {

tests/convs.grnd

@@ -1,3 +1,11 @@
-tostring 32 &int
+tostring 32 &str
+stoi "12" &int
+stod "3.14" &dou
+itoc 353 &chr
+ctoi 'a' &it2
 
+println $str
 println $int
+println $dou
+println $chr
+println $it2