bshell: re-organise build into three separate components

bshell: the front-end binary
bshell.runtime: contains the parser, compiler, and classes needed to run bshell scripts
bshell.core: contains the builtin commandlets and aliases

bshell.runtime/runtime/scope.h

@@ -0,0 +1,51 @@
+#ifndef BSHELL_RUNTIME_SCOPE_H_
+#define BSHELL_RUNTIME_SCOPE_H_
+
+#include "var-map.h"
+
+#include <bshell/runtime/script-block.h>
+#include <fx/collections/hashtable.h>
+#include <fx/namemap.h>
+#include <fx/queue.h>
+#include <fx/vector.h>
+
+struct bshell_runtime;
+
+enum bshell_runtime_scope_type {
+	RUNTIME_SCOPE_OTHER = 0,
+	RUNTIME_SCOPE_SCRIPT,
+	RUNTIME_SCOPE_GLOBAL,
+};
+
+struct bshell_runtime_scope {
+	enum bshell_runtime_scope_type s_type;
+	fx_queue_entry s_entry;
+	struct var_map s_vars;
+	fx_hashtable *s_functions;
+	FX_VECTOR_DECLARE(fx_value, s_stack);
+	size_t s_ip;
+
+	bshell_scriptblock *s_block;
+	bshell_instruction *s_instr;
+	size_t s_nr_instr;
+	fx_value *s_pool;
+	size_t s_nr_pool;
+};
+
+extern struct bshell_runtime_scope *runtime_push_scope(
+	struct bshell_runtime *rt,
+	enum bshell_runtime_scope_type type,
+	bshell_scriptblock *block);
+extern void runtime_pop_scope(struct bshell_runtime *rt);
+extern struct bshell_runtime_scope *runtime_get_scope(struct bshell_runtime *rt);
+
+extern void bshell_runtime_scope_push_value(
+	struct bshell_runtime_scope *scope,
+	const fx_value *value);
+extern fx_value bshell_runtime_scope_pop_value(struct bshell_runtime_scope *scope);
+
+extern void bshell_runtime_scope_set_block(
+	struct bshell_runtime_scope *scope,
+	bshell_scriptblock *block);
+
+#endif