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/include/bshell/runtime/pipeline.h

@@ -0,0 +1,49 @@
+#ifndef BSHELL_RUNTIME_PIPELINE_H_
+#define BSHELL_RUNTIME_PIPELINE_H_
+
+#include "../command/command.h"
+#include "../runtime/cmdcall.h"
+#include "../status.h"
+
+#include <fx/macros.h>
+#include <fx/value.h>
+
+FX_DECLS_BEGIN;
+
+struct bshell_runtime;
+
+#define BSHELL_TYPE_PIPELINE (bshell_pipeline_get_type())
+
+FX_DECLARE_TYPE(bshell_pipeline);
+
+FX_TYPE_CLASS_DECLARATION_BEGIN(bshell_pipeline)
+FX_TYPE_CLASS_DECLARATION_END(bshell_pipeline)
+
+extern fx_type_id bshell_pipeline_get_type(void);
+
+FX_TYPE_DEFAULT_CONSTRUCTOR(bshell_pipeline, BSHELL_TYPE_PIPELINE);
+
+extern enum bshell_status bshell_pipeline_add_input_value(
+	bshell_pipeline *pipeline,
+	fx_value value,
+	bool enumerate);
+extern enum bshell_status bshell_pipeline_add_cmdcall(
+	bshell_pipeline *pipeline,
+	bshell_cmdcall *cmd);
+extern enum bshell_status bshell_pipeline_execute_single(
+	bshell_pipeline *pipeline);
+extern enum bshell_status bshell_pipeline_pump_record(
+	bshell_pipeline *pipeline,
+	struct bshell_runtime *rt,
+	fx_value *out,
+	int *out_end_of_data);
+
+extern fx_value bshell_pipeline_read_value(bshell_pipeline *pipeline);
+extern enum bshell_status bshell_pipeline_write_value(
+	bshell_pipeline *pipeline,
+	fx_value val,
+	bool enumerate);
+
+FX_DECLS_END;
+
+#endif