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Major refactoring. Major problems!

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On the right path but it doesn't work yet.
This commit is contained in:
Simon Brooke 2018-12-26 20:30:14 +00:00
parent ae8ba67ed7
commit 9937f344dc
20 changed files with 695 additions and 506 deletions
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48
src/memory/stack.h
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@ -24,46 +24,40 @@
#ifndef __stack_h
#define __stack_h
/**
* macros for the tag of a stack frame.
*/
#define STACKFRAMETAG "STAK"
#define STACKFRAMETV 1262572627
/**
* is this vector-space object a stack frame?
*/
#define stackframep(vso)(vso->header.tag.value == STACKFRAMETV)
/**
* set a register in a stack frame. Alwaye use this macro to do so,
• because that way we can be sure the inc_ref happens!
*/
#define set_reg(frame,register,value)frame->arg[register]=value; inc_ref(value)
struct stack_frame * get_stack_frame(struct cons_pointer pointer);
/**
* Make an empty stack frame, and return it.
* @param previous the current top-of-stack;
* @param env the environment in which evaluation happens.
* @return the new frame.
*/
struct stack_frame *make_empty_frame( struct stack_frame *previous,
struct cons_pointer env );
struct cons_pointer make_empty_frame( struct cons_pointer previous );
struct cons_pointer make_stack_frame( struct cons_pointer previous,
struct cons_pointer args,
struct cons_pointer env );
struct stack_frame *make_stack_frame( struct stack_frame *previous,
struct cons_pointer args,
struct cons_pointer env,
struct cons_pointer *exception );
void free_stack_frame( struct stack_frame *frame );
/**
* Dump a stackframe to this stream for debugging
* @param output the stream
* @param frame the frame
*/
void dump_frame( FILE * output, struct stack_frame *frame );
void dump_frame( FILE * output, struct cons_pointer pointer );
void dump_stack_trace(FILE * output, struct cons_pointer frame_pointer);
struct cons_pointer fetch_arg( struct stack_frame *frame, unsigned int n );
/**
* A 'special' frame is exactly like a normal stack frame except that the
* arguments are unevaluated.
* @param previous the previous stack frame;
* @param args a list of the arguments to be stored in this stack frame;
* @param env the execution environment;
* @return a new special frame.
*/
struct stack_frame *make_special_frame( struct stack_frame *previous,
struct cons_pointer make_special_frame( struct cons_pointer previous,
struct cons_pointer args,
struct cons_pointer env );