separate IR graph parts of Proc into a Graph struct

1 files changed, 51 insertions, 0 deletions

diff --git a/proc.h b/proc.h
new file mode 100644
index 0000000..ec3687f
--- /dev/null
+++ b/proc.h
@@ -0,0 +1,51 @@
+#ifndef PROC_H
+#define PROC_H
+
+#include "ir.h"
+
+typedef struct NameBinding {
+	struct NameBinding *prev;
+	LexSpan src_pos;
+	Str name;
+	Node *node;
+} NameBinding;
+
+typedef struct ScopeFrame {
+	struct ScopeFrame *prev;
+	NameBinding *latest;
+} ScopeFrame;
+
+typedef struct {
+	Arena *arena;
+	ScopeFrame *tail, *free_scope;
+	NameBinding *free_bind;
+} Scope;
+
+typedef struct {
+	Str name;
+	Node *node;
+} ScopeName;
+
+typedef DYNARR(ScopeName) ScopeNameList;
+
+typedef struct {
+	Str name;
+	Type ret_type;
+	Arena perm, scratch;
+	NodePool pool;
+	Graph graph;
+	Scope scope;
+} Proc;
+
+void proc_init(Proc *proc, Str name);
+void proc_free(Proc *proc);
+
+ScopeFrame *scope_push(Scope *scope);
+ScopeFrame *scope_pop(Scope *scope, Graph *g);
+NameBinding *scope_find(Scope *scope, Str name);
+NameBinding *scope_bind(Scope *scope, Str name, Node *value, LexSpan pos, Graph *g);
+NameBinding *scope_update(NameBinding *b, Node *to, Graph *g);
+void scope_collect(Scope *scope, Graph *g, ScopeNameList *nl, Arena *arena);
+void scope_uncollect(Scope *scope, Graph *g, ScopeNameList *nl);
+
+#endif