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56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
#ifndef FUNCTION_MANAGER_H
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#define FUNCTION_MANAGER_H
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#include "containers/mlrval.h"
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#include "containers/lhmsv.h"
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#include "containers/mlr_dsl_ast.h" // xxx factor out this dependency?
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#include "mapping/rval_evaluator.h"
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#include "mapping/type_inference.h"
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// ----------------------------------------------------------------
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// Things a user-defined function (however it is implemented) needs in order to
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// be called: pvstate it its own state (whatever that is), and it defines its
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// own process and free functions implementing this interface.
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struct _UDF_defsite_state_t; // Forward reference
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typedef mv_t UDF_defsite_process_func_t(void* pvstate, int arity, mv_t* pargs, variables_t* pvars);
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typedef void UDF_defsite_free_func_t(struct _UDF_defsite_state_t* pdefsite_state);
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typedef struct _UDF_defsite_state_t {
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void* pvstate;
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int arity;
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UDF_defsite_process_func_t* pprocess_func;
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UDF_defsite_free_func_t* pfree_func;
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} UDF_defsite_state_t;
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// ----------------------------------------------------------------
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// Holds built-in functions as well as user-defined functions
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struct _function_lookup_t; // Private to the .c file
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typedef struct _fmgr_t {
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struct _function_lookup_t * function_lookup_table; // Built-ins
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lhmsv_t* pUDF_names_to_defsite_states; // UDFs
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} fmgr_t;
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// ----------------------------------------------------------------
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fmgr_t* fmgr_alloc();
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void fmgr_free(fmgr_t* pfmgr);
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// xxx disallow redefine ?
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void fmgr_install_UDF(fmgr_t* pfmgr, char* name, int arity, UDF_defsite_state_t* pdefsitate_state);
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// Callsites as defined by AST nodes
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rval_evaluator_t* fmgr_alloc_from_operator_or_function_call(fmgr_t* pfmgr, mlr_dsl_ast_node_t* pnode,
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int type_inferencing, int context_flags);
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void fmgr_list_functions(fmgr_t* pfmgr, FILE* output_stream, char* leader);
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// Pass function_name == NULL to get usage for all functions:
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void fmgr_function_usage(fmgr_t* pfmgr, FILE* output_stream, char* function_name);
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void fmgr_list_all_functions_raw(fmgr_t* pfmgr, FILE* output_stream);
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#endif // FUNCTION_MANAGER_H
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