Setup structure for program execute

3 files changed, 30 insertions, 4 deletions

diff --git a/include/ast.h b/include/ast.h
index 2925f6c..f056db7 100644
--- a/include/ast.h
+++ b/include/ast.h
@@ -142,9 +142,12 @@ typedef struct {
 } VariableType;
 
 /*
-    Note: When resolving AST, more than one thread can end up resolving the same expressions at the same time.
+    Note: When resolving AST, multiple threads can end up resolving the same expressions at the same time.
     This is intentional. Instead of using mutex for every expression and locking/unlocking everytime
     which uses more memory and affects performance, we assume such race conditions are rare and let them happen.
+    TODO: Investigate possible deadlock when multiple threads resolve the same expression and that
+    expression has a recursive dependency and the threads execute @ast_resolve at the same speed,
+    leading to @ast_resolve running again for the same expression.
 */
 struct LhsExpr {
     bool is_extern;
@@ -210,7 +213,7 @@ typedef struct {
     Parser *parser; /* Borrowed. This is the parser that belongs to the thread */
     /*
         Borrowed. This is the current scope. Note that this scope can belong to another parser (and thread),
-        as such, @parser and scope_get_parser(@scope) parser may not be the same
+        as such, @parser and scope_get_parser(@scope) parser may not be the same.
     */
     Scope *scope;
 } AstCompilerContext;
diff --git a/include/bytecode/bytecode.h b/include/bytecode/bytecode.h
index 739aa79..b571383 100644
--- a/include/bytecode/bytecode.h
+++ b/include/bytecode/bytecode.h
@@ -21,7 +21,10 @@
     4.3 Opcode + index\
     4.4 Opcode + offset
     5. 4 bytes: Opcode + register + register + register
-    6. 4 bytes: Opcode + register + offset
+    6. 4 bytes:\
+    6.1 Opcode + register + offset\
+    6.2 Opcode + register + intermediate\
+    6.3 Opcode + register + data
 */
 typedef enum {
     AMAL_OP_NOP,         /* No operation. This can be used for patching */
diff --git a/include/program.h b/include/program.h
index cbd9432..f251fbc 100644
--- a/include/program.h
+++ b/include/program.h
@@ -4,11 +4,31 @@
 #include "std/buffer.h"
 #include "bytecode/bytecode.h"
 
+#define AMAL_PROGRAM_OK 0
+#define AMAL_PROGRAM_INVALID_HEADER -1
+#define AMAL_PROGRAM_INVALID_MAGIC_NUMBER -2
+#define AMAL_PROGRAM_INCOMPATIBLE -3
+#define AMAL_PROGRAM_INVALID_INTERMEDIATES -4
+#define AMAL_PROGRAM_INVALID_INTERMEDIATES_SIZE -5
+#define AMAL_PROGRAM_INVALID_STRINGS -6
+#define AMAL_PROGRAM_INVALID_STRINGS_SIZE -7
+#define AMAL_PROGRAM_STRING_ALLOC_FAILURE -8
+#define AMAL_PROGRAM_INVALID_INSTRUCTIONS_SIZE -9
+
+#define AMAL_PROGRAM_MAGIC_NUMBER (u32)0xdec05eba
+#define AMAL_PROGRAM_MAJOR_VERSION 1
+#define AMAL_PROGRAM_MINOR_VERSION 0
+#define AMAL_PROGRAM_PATCH_VERSION 0
+
 typedef struct {
     Buffer/*<...>*/ data;
+    Buffer/*<u32>*/ string_indices;
+    char *intermediates_start;
+    char *strings_start;
+    usize read_index;
 } amal_program;
 
-void amal_program_init(amal_program *self);
+CHECK_RESULT int amal_program_init(amal_program *self);
 void amal_program_deinit(amal_program *self);
 
 CHECK_RESULT int amal_program_append_bytecode(amal_program *self, Bytecode *bytecode);