Merge branch 'master' into blub/bc3

[xonotic/gmqcc.git] / ast.h

diff --git a/ast.h b/ast.h
index ecc2498b3356ba10f535f5bdbc9c140a1b0f7e81..3b7ebdca0c22aceea61ead4ec6baceeb5ab3c0e7 100644 (file)
--- a/ast.h
+++ b/ast.h
@@ -41,6 +41,29 @@ typedef struct ast_ifthen_s     ast_ifthen;
 typedef struct ast_ternary_s    ast_ternary;
 typedef struct ast_loop_s       ast_loop;
 typedef struct ast_call_s       ast_call;
+typedef struct ast_unary_s      ast_unary;
+typedef struct ast_return_s     ast_return;
+typedef struct ast_member_s     ast_member;
+
+enum {
+    TYPE_ast_node,
+    TYPE_ast_expression,
+    TYPE_ast_value,
+    TYPE_ast_function,
+    TYPE_ast_block,
+    TYPE_ast_binary,
+    TYPE_ast_store,
+    TYPE_ast_entfield,
+    TYPE_ast_ifthen,
+    TYPE_ast_ternary,
+    TYPE_ast_loop,
+    TYPE_ast_call,
+    TYPE_ast_unary,
+    TYPE_ast_return,
+    TYPE_ast_member
+};
+
+#define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (t) )
 
 /* Node interface with common components
  */
@@ -50,6 +73,7 @@ typedef struct
     lex_ctx          context;
     /* I don't feel comfortable using keywords like 'delete' as names... */
     ast_node_delete *destroy;
+    int              nodetype;
     /* keep: if a node contains this node, 'keep'
      * prevents its dtor from destroying this node as well.
      */
@@ -79,7 +103,9 @@ typedef struct
     ast_expression_codegen *codegen;
     int                     vtype;
     ast_expression         *next;
+    MEM_VECTOR_MAKE(ast_value*, params);
 } ast_expression_common;
+MEM_VECTOR_PROTO(ast_expression_common, ast_value*, params);
 
 /* Value
  *
@@ -107,16 +133,12 @@ struct ast_value_s
         const char   *vstring;
         int           ventity;
         ast_function *vfunc;
+        quaternion    vquat;
+        matrix        vmat;
     } constval;
 
     ir_value *ir_v;
-
-    /* if vtype is qc_function, params contain parameters, and
-     * 'next' the return type.
-     */
-    MEM_VECTOR_MAKE(ast_value*, params);
 };
-MEM_VECTOR_PROTO(ast_value, ast_value*, params);
 
 ast_value* ast_value_new(lex_ctx ctx, const char *name, int qctype);
 /* This will NOT delete an underlying ast_function */
@@ -125,9 +147,11 @@ void ast_value_delete(ast_value*);
 bool ast_value_set_name(ast_value*, const char *name);
 
 bool ast_value_codegen(ast_value*, ast_function*, bool lvalue, ir_value**);
-bool ast_local_codegen(ast_value *self, ir_function *func);
+bool ast_local_codegen(ast_value *self, ir_function *func, bool isparam);
 bool ast_global_codegen(ast_value *self, ir_builder *ir);
 
+bool GMQCC_WARN ast_value_params_add(ast_value*, ast_value*);
+
 /* Binary
  *
  * A value-returning binary expression.
@@ -148,6 +172,41 @@ void ast_binary_delete(ast_binary*);
 
 bool ast_binary_codegen(ast_binary*, ast_function*, bool lvalue, ir_value**);
 
+/* Unary
+ *
+ * Regular unary expressions: not,neg
+ */
+struct ast_unary_s
+{
+    ast_expression_common expression;
+
+    int             op;
+    ast_expression *operand;
+};
+ast_unary* ast_unary_new(lex_ctx    ctx,
+                         int        op,
+                         ast_expression *expr);
+void ast_unary_delete(ast_unary*);
+
+bool ast_unary_codegen(ast_unary*, ast_function*, bool lvalue, ir_value**);
+
+/* Return
+ *
+ * Make sure 'return' only happens at the end of a block, otherwise the IR
+ * will refuse to create further instructions.
+ * This should be honored by the parser.
+ */
+struct ast_return_s
+{
+    ast_expression_common expression;
+    ast_expression *operand;
+};
+ast_return* ast_return_new(lex_ctx    ctx,
+                           ast_expression *expr);
+void ast_return_delete(ast_return*);
+
+bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**);
+
 /* Entity-field
  *
  * This must do 2 things:
@@ -174,6 +233,22 @@ void ast_entfield_delete(ast_entfield*);
 
 bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**);
 
+/* Member access:
+ *
+ * For now used for vectors. If we get structs or unions
+ * we can have them handled here as well.
+ */
+struct ast_member_s
+{
+    ast_expression_common expression;
+    ast_expression *owner;
+    unsigned int    field;
+};
+ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field);
+void ast_member_delete(ast_member*);
+
+bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**);
+
 /* Store
  *
  * Stores left<-right and returns left.
@@ -183,11 +258,11 @@ struct ast_store_s
 {
     ast_expression_common expression;
     int             op;
-    ast_value      *dest; /* When we add pointers this might have to change to expression */
+    ast_expression *dest;
     ast_expression *source;
 };
 ast_store* ast_store_new(lex_ctx ctx, int op,
-                         ast_value *d, ast_expression *s);
+                         ast_expression *d, ast_expression *s);
 void ast_store_delete(ast_store*);
 
 bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**);
@@ -322,6 +397,7 @@ struct ast_block_s
 };
 ast_block* ast_block_new(lex_ctx ctx);
 void ast_block_delete(ast_block*);
+bool ast_block_set_type(ast_block*, ast_expression *from);
 
 MEM_VECTOR_PROTO(ast_block, ast_value*, locals);
 MEM_VECTOR_PROTO(ast_block, ast_expression*, exprs);
@@ -360,14 +436,6 @@ struct ast_function_s
     char         labelbuf[64];
 
     MEM_VECTOR_MAKE(ast_block*, blocks);
-
-    /* contrary to the params in ast_value, these are the parameter variables
-     * which are to be used in expressions.
-     * The ast_value for the function contains only the parameter types used
-     * to generate ast_calls, and ast_call contains the parameter values
-     * used in that call.
-     */
-    MEM_VECTOR_MAKE(ast_value*, params);
 };
 ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype);
 /* This will NOT delete the underlying ast_value */
@@ -378,7 +446,6 @@ void ast_function_delete(ast_function*);
 const char* ast_function_label(ast_function*, const char *prefix);
 
 MEM_VECTOR_PROTO(ast_function, ast_block*, blocks);
-MEM_VECTOR_PROTO(ast_function, ast_value*, params);
 
 bool ast_function_codegen(ast_function *self, ir_builder *builder);