feat: implement global variables referencing string literals

1 files changed, 32 insertions, 1 deletions

diff --git a/src/parse.h b/src/parse.h
index 17ffe2c..d5a443c 100644
--- a/src/parse.h
+++ b/src/parse.h
@@ -7,6 +7,37 @@
 
 Program* parse(TokenArray* tokens);
 bool pp_eval_constant_expr(TokenArray* pp_tokens);
-void eval_init_expr(StrBuilder* buf, AstNode* expr, Type* ty);
+
+typedef enum {
+    InitDataBlockKind_addr,
+    InitDataBlockKind_bytes,
+} InitDataBlockKind;
+
+// Static address to global variable or ROM area.
+typedef struct {
+    const char* label;
+} InitDataBlockAddr;
+
+// Static byte array.
+typedef struct {
+    size_t len;
+    const char* buf;
+} InitDataBlockBytes;
+
+typedef struct {
+    InitDataBlockKind kind;
+    union {
+        InitDataBlockAddr addr;
+        InitDataBlockBytes bytes;
+    } as;
+} InitDataBlock;
+
+typedef struct {
+    size_t len;
+    size_t capacity;
+    InitDataBlock* blocks;
+} InitData;
+
+InitData* eval_init_expr(AstNode* expr, Type* ty);
 
 #endif