added mote syntax elements

src/ast/ast.c

@@ -23,27 +23,64 @@ struct AST_Node_t *AST_new_node(enum AST_SyntaxElement_t kind, const char* value
   return node;
 }
 
+static const char* lookup_table[AST_ELEMENT_COUNT] = { "__UNINIT__" };
+
+void AST_init() {
+  DEBUG("initializing global syntax tree...");
+
+  INFO("filling lookup table...");
+
+  lookup_table[AST_Expr] = "expr";
+
+  lookup_table[AST_Add] = "+";
+  lookup_table[AST_Sub] = "-";
+  lookup_table[AST_Mul] = "*";
+  lookup_table[AST_Div] = "/";
+
+  lookup_table[AST_BitAnd] = "&";
+  lookup_table[AST_BitOr] = "|";
+  lookup_table[AST_BitXor] = "^";
+  lookup_table[AST_BitNot] = "!";
+
+  lookup_table[AST_Eq] = "==";
+  lookup_table[AST_Less] = "<";
+  lookup_table[AST_Greater] = ">";
+
+  lookup_table[AST_BoolAnd] = "&&";
+  lookup_table[AST_BoolOr] = "||";
+  lookup_table[AST_BoolXor] = "^^";
+  lookup_table[AST_BoolNot] = "!!";
+
+  lookup_table[AST_While] = "while";
+  lookup_table[AST_If] = "if";
+  lookup_table[AST_IfElse] = "else if";
+  lookup_table[AST_Else] = "else";
+
+  lookup_table[AST_Decl] = "decl";
+  lookup_table[AST_Assign] = "assign";
+  lookup_table[AST_Def] = "def";
+
+  lookup_table[AST_Typedef] = "typedef";
+  lookup_table[AST_Box] = "box";
+  lookup_table[AST_Fun] = "fun";
+}
+
 const char* AST_node_to_string(struct AST_Node_t* node) {
   DEBUG("converting AST node to string: %p", node);
 
   const char* string = "unknown";
 
   switch(node->kind) {
-    case AST_Expression:
+    case AST_Int:
-      string = "expression";
+    case AST_Float:
-      break;
+    case AST_String:
-    case AST_Statement:
+    case AST_Ident:
-      string = "statement";
+    case AST_Macro:
-      break;
+    case AST_Import:
-    case AST_Branch:
-      string = "if";
-      break;
-    case AST_IntegerLiteral:
       string = node->value;
       break;
-    case AST_OperatorAdd:
+    default:
-      string = "+";
+      string = lookup_table[node->kind];
-      break;
   }
 
   return string;

src/ast/ast.h

@@ -6,7 +6,7 @@
 
 // Syntax elements which are stored in a syntax tree
 enum AST_SyntaxElement_t {
-  AST_Stmt,
+  AST_Stmt = 0,
   AST_Expr,
   // Literals
   AST_Int,
@@ -50,7 +50,10 @@ enum AST_SyntaxElement_t {
   AST_Typedef,
   AST_Box,
   AST_Fun,
-  AST_Import
+  AST_Import,
+  // amount of variants
+  // in this enum
+  AST_ELEMENT_COUNT
 };
 
 struct AST_Node_t {
@@ -69,6 +72,11 @@ struct AST_Node_t {
   struct AST_Node_t **children;
 };
 
+typedef struct AST_Node_t* AST_NODE_PTR;
+
+// initialize the global AST state
+void AST_init(void);
+
 // return a string representation of the nodes type and its value
 // does not take into account its children or parent
 const char* AST_node_to_string(struct AST_Node_t* node);

src/main.c

@@ -1,7 +1,7 @@
-#include <ast/ast.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <sys/log.h>
+#include <yacc/parser.tab.h>
+#include <ast/ast.h>
 
 #define LOG_LEVEL LOG_LEVEL_DEBUG
 
@@ -45,6 +45,7 @@ void setup(void)
 #endif
 
     // actual setup
+    AST_init();
 
     DEBUG("finished starting up gemstone...");
 }
@@ -66,26 +67,13 @@ int main(int argc, char *argv[]) {
 
     FILE *file = fopen(filename, "r");
 
-    struct AST_Node_t* node = AST_new_node(AST_Branch, NULL);
+    if (NULL == file)
+    {
+        PANIC("File couldn't be opened!");
+    }
+    yyin = file;
 
-    struct AST_Node_t* child = AST_new_node(AST_OperatorAdd, NULL);
+    yyparse();
-    AST_push_node(child, AST_new_node(AST_IntegerLiteral, "43"));
-    AST_push_node(child, AST_new_node(AST_IntegerLiteral, "9"));
-
-    AST_push_node(node, child);
-    AST_push_node(node, AST_new_node(AST_Expression, NULL));
-    AST_push_node(node, AST_new_node(AST_Expression, NULL));
-
-    FILE* out = fopen("ast.gv", "w+");
-    // convert this file        ^^^^^^
-    // to an svg with: `dot -Tsvg ast.gv > graph.svg`
-
-    AST_fprint_graphviz(out, node);
-
-    AST_delete_node(node);
-
-    fflush(out);
-    fclose(out);
 
     return 0;
 }