MLISP_EXEC_STATE Struct Reference

Current execution state to associate with a MLISP_PARSER. More...

#include <mlisps.h>

Collaboration diagram for MLISP_EXEC_STATE:

Data Fields
uint8_t	flags
	Flags which dictate the behavior of this object.
struct MDATA_VECTOR	per_node_visit_ct
	The number of times each node has been visited ever.
struct MDATA_VECTOR	per_node_child_idx
	The hild index that will be visited on next visit of each node.
struct MDATA_VECTOR	stack
	A stack of data values resulting from evaluating statements.
struct MDATA_VECTOR	env
	Environment in which statements are defined if ::MLISP_.
struct MDATA_VECTOR	lambda_trace
	Path through any lambdas the execution has entered during this heartbeat cycle. Used to detect tail calls.
void *	cb_attachment

Related Symbols
(Note that these are not member symbols.)
#define	MLISP_EXEC_FLAG_TRANSIENT_MASK   0x0f
	Mask for MLISP_EXEC_STATE::flags to block off flags that persist between steps.
#define	MLISP_EXEC_FLAG_DEF_TERM   0x20
	Flag for MLISP_EXEC_STATE::flags indicating next token is a term to be defined.
#define	MLISP_EXEC_FLAG_SHARED_ENV   0x40
	Flag for MLISP_EXEC_STATE::flags indicating defines and calls should reference MLISP_PARSER::env instead of MLISP_EXEC_STATE::env.

Detailed Description

Current execution state to associate with a MLISP_PARSER.

Note

In general, this library uses nested locks because MLISP_STACK_NODE and MLISP_ENV_NODE do not have MDATA_VECTOR structs attached, so there's no danger of a MDATA_VECTOR being reallocated out from beneath another.

Field Documentation

env

struct MDATA_VECTOR MLISP_EXEC_STATE::env

Environment in which statements are defined if ::MLISP_.

This is segmented with ::MLISP_TYPE_ARGS_S and :: MLISP_TYPE_ARGS_E, to denote env definitions that are actually args for the current lambda.

per_node_child_idx

struct MDATA_VECTOR MLISP_EXEC_STATE::per_node_child_idx

The hild index that will be visited on next visit of each node.

This is tracked per MLISP_AST_NODE, so each node has its own "program counter." This facilitates things like tail call optimization.

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The documentation for this struct was generated from the following file:

• mlisps.h