1529 lines
34 KiB
C
1529 lines
34 KiB
C
/*
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* $Id: run.c,v 1.34 2006-04-04 06:26:56 bacon Exp $
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*/
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#include <xp/awk/awk_i.h>
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#ifndef __STAND_ALONE
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#include <xp/bas/assert.h>
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#include <xp/bas/string.h>
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#include <xp/bas/memory.h>
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#endif
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#define STACK_INCREMENT 512
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#define STACK_AT(awk,n) ((awk)->run.stack[(awk)->run.stack_base+(n)])
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#define STACK_NARGS(awk) ((xp_size_t)STACK_AT(awk,3))
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#define STACK_ARG(awk,n) STACK_AT(awk,3+1+(n))
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#define STACK_LOCAL(awk,n) STACK_AT(awk,3+STACK_NARGS(awk)+1+(n))
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#define STACK_RETVAL(awk) STACK_AT(awk,2)
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#define STACK_GLOBAL(awk,n) ((awk)->run.stack[n])
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#define EXIT_NONE 0
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#define EXIT_BREAK 1
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#define EXIT_CONTINUE 2
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#define EXIT_FUNCTION 3
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#define EXIT_GLOBAL 4
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static int __run_block (xp_awk_t* awk, xp_awk_nde_blk_t* nde);
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static int __run_statement (xp_awk_t* awk, xp_awk_nde_t* nde);
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static int __run_if_statement (xp_awk_t* awk, xp_awk_nde_if_t* nde);
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static int __run_while_statement (xp_awk_t* awk, xp_awk_nde_while_t* nde);
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static int __run_for_statement (xp_awk_t* awk, xp_awk_nde_for_t* nde);
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static int __run_break_statement (xp_awk_t* awk, xp_awk_nde_break_t* nde);
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static int __run_continue_statement (xp_awk_t* awk, xp_awk_nde_continue_t* nde);
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static int __run_return_statement (xp_awk_t* awk, xp_awk_nde_return_t* nde);
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static int __run_exit_statement (xp_awk_t* awk, xp_awk_nde_exit_t* nde);
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static xp_awk_val_t* __eval_expression (xp_awk_t* awk, xp_awk_nde_t* nde);
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static xp_awk_val_t* __eval_assignment (xp_awk_t* awk, xp_awk_nde_ass_t* nde);
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static xp_awk_val_t* __do_assignment (
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xp_awk_t* awk, xp_awk_nde_var_t* var, xp_awk_val_t* val);
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static xp_awk_val_t* __eval_binary (xp_awk_t* awk, xp_awk_nde_exp_t* nde);
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static xp_awk_val_t* __eval_binop_lor (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_land (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_bor (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_bxor (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_band (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_eq (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_ne (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_gt (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_ge (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_lt (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_le (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_lshift (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_rshift (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_plus (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_minus (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_mul (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_div (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_binop_mod (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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static xp_awk_val_t* __eval_unary (xp_awk_t* awk, xp_awk_nde_exp_t* nde);
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static xp_awk_val_t* __eval_incpre (xp_awk_t* awk, xp_awk_nde_exp_t* nde);
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static xp_awk_val_t* __eval_incpst (xp_awk_t* awk, xp_awk_nde_exp_t* nde);
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static xp_awk_val_t* __eval_funccall (xp_awk_t* awk, xp_awk_nde_call_t* nde);
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static int __raw_push (xp_awk_t* awk, void* val);
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static void __raw_pop (xp_awk_t* awk);
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typedef xp_awk_val_t* (*binop_func_t) (
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xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right);
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int __printval (xp_awk_pair_t* pair)
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{
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xp_printf (XP_TEXT("%s = "), (const xp_char_t*)pair->key);
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xp_awk_printval ((xp_awk_val_t*)pair->val);
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xp_printf (XP_TEXT("\n"));
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return 0;
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}
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int xp_awk_run (xp_awk_t* awk)
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{
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xp_size_t nglobals;
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// TODO: clear run stack/exit_level
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awk->run.exit_level = EXIT_NONE;
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xp_assert (awk->run.stack_base == 0 && awk->run.stack_top == 0);
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/* secure space for global variables */
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nglobals = awk->tree.nglobals;
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while (nglobals > 0)
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{
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--nglobals;
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if (__raw_push(awk,xp_awk_val_nil) == -1)
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{
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// TODO: error handling
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return -1;
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}
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}
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if (awk->tree.begin != XP_NULL)
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{
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xp_assert (awk->tree.begin->type == XP_AWK_NDE_BLK);
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if (__run_block (awk,
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(xp_awk_nde_blk_t*)awk->tree.begin) == -1) return -1;
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}
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if (awk->tree.end != XP_NULL)
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{
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xp_assert (awk->tree.end->type == XP_AWK_NDE_BLK);
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if (__run_block (awk,
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(xp_awk_nde_blk_t*)awk->tree.end) == -1) return -1;
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}
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xp_printf (XP_TEXT("---------------------------\n"));
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xp_awk_map_walk (&awk->run.named, __printval);
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return 0;
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}
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static int __run_block (xp_awk_t* awk, xp_awk_nde_blk_t* nde)
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{
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xp_awk_nde_t* p;
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xp_size_t nlocals;
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xp_assert (nde->type == XP_AWK_NDE_BLK);
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p = nde->body;
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nlocals = nde->nlocals;
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//xp_printf (XP_TEXT("securing space for local variables nlocals = %d\n"), nlocals);
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/* secure space for local variables */
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while (nlocals > 0)
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{
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--nlocals;
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if (__raw_push(awk,xp_awk_val_nil) == -1)
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{
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// TODO: proper error handling...
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return -1;
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}
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/* refupval is not required for xp_awk_val_nil */
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}
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//xp_printf (XP_TEXT("executing block statements\n"));
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while (p != XP_NULL && awk->run.exit_level == EXIT_NONE)
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{
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if (__run_statement(awk,p) == -1) return -1;
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p = p->next;
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}
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//xp_printf (XP_TEXT("popping off local variables\n"));
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/* pop off local variables */
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nlocals = nde->nlocals;
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while (nlocals > 0)
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{
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--nlocals;
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xp_awk_refdownval (awk, STACK_LOCAL(awk,nlocals));
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__raw_pop (awk);
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}
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return 0;
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}
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static int __run_statement (xp_awk_t* awk, xp_awk_nde_t* nde)
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{
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switch (nde->type)
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{
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case XP_AWK_NDE_NULL:
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/* do nothing */
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break;
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case XP_AWK_NDE_BLK:
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if (__run_block(awk,(xp_awk_nde_blk_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_IF:
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if (__run_if_statement (
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awk, (xp_awk_nde_if_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_WHILE:
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case XP_AWK_NDE_DOWHILE:
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if (__run_while_statement (
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awk, (xp_awk_nde_while_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_FOR:
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if (__run_for_statement (
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awk, (xp_awk_nde_for_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_BREAK:
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if (__run_break_statement(
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awk, (xp_awk_nde_break_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_CONTINUE:
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if (__run_continue_statement (
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awk, (xp_awk_nde_continue_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_RETURN:
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if (__run_return_statement (
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awk, (xp_awk_nde_return_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_EXIT:
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if (__run_exit_statement (
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awk, (xp_awk_nde_exit_t*)nde) == -1) return -1;
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break;
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case XP_AWK_NDE_NEXT:
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break;
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case XP_AWK_NDE_NEXTFILE:
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break;
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default:
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if (__eval_expression(awk,nde) == XP_NULL) return -1;
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break;
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}
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return 0;
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}
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static int __run_if_statement (xp_awk_t* awk, xp_awk_nde_if_t* nde)
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{
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xp_awk_val_t* test;
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int n = 0;
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test = __eval_expression (awk, nde->test);
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if (test == XP_NULL) return -1;
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xp_awk_refupval (test);
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if (xp_awk_isvaltrue(test))
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{
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n = __run_statement (awk, nde->then_part);
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}
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else if (nde->else_part != XP_NULL)
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{
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n = __run_statement (awk, nde->else_part);
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}
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xp_awk_refdownval (awk, test); // TODO: is this correct?
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return n;
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}
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static int __run_while_statement (xp_awk_t* awk, xp_awk_nde_while_t* nde)
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{
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xp_awk_val_t* test;
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if (nde->type == XP_AWK_NDE_WHILE)
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{
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while (1)
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{
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test = __eval_expression (awk, nde->test);
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if (test == XP_NULL) return -1;
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xp_awk_refupval (test);
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if (xp_awk_isvaltrue(test))
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{
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// TODO: break.... continue...., global exit, return... run-time abortion...
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if (__run_statement(awk,nde->body) == -1)
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{
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xp_awk_refdownval (awk, test);
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return -1;
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}
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}
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else
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{
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xp_awk_refdownval (awk, test);
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break;
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}
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xp_awk_refdownval (awk, test);
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if (awk->run.exit_level == EXIT_BREAK)
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{
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awk->run.exit_level = EXIT_NONE;
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break;
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}
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else if (awk->run.exit_level == EXIT_CONTINUE)
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{
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awk->run.exit_level = EXIT_NONE;
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}
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else if (awk->run.exit_level != EXIT_NONE) break;
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}
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}
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else if (nde->type == XP_AWK_NDE_DOWHILE)
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{
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do
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{
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if (__run_statement(awk,nde->body) == -1)
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{
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// TODO: error handling...
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return -1;
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}
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if (awk->run.exit_level == EXIT_BREAK)
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{
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awk->run.exit_level = EXIT_NONE;
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break;
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}
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else if (awk->run.exit_level == EXIT_CONTINUE)
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{
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awk->run.exit_level = EXIT_NONE;
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}
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else if (awk->run.exit_level != EXIT_NONE) break;
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test = __eval_expression (awk, nde->test);
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if (test == XP_NULL) return -1;
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xp_awk_refupval (test);
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if (!xp_awk_isvaltrue(test))
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{
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xp_awk_refdownval (awk, test);
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break;
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}
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xp_awk_refdownval (awk, test);
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}
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while (1);
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}
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return 0;
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}
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static int __run_for_statement (xp_awk_t* awk, xp_awk_nde_for_t* nde)
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{
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if (nde->init != XP_NULL)
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{
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if (__eval_expression(awk,nde->init) == XP_NULL) return -1;
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}
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while (1)
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{
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if (nde->test != XP_NULL)
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{
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xp_awk_val_t* test;
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test = __eval_expression (awk, nde->test);
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if (test == XP_NULL) return -1;
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xp_awk_refupval (test);
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if (xp_awk_isvaltrue(test))
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{
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if (__run_statement(awk,nde->body) == -1)
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{
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xp_awk_refdownval (awk, test);
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return -1;
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}
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}
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else
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{
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xp_awk_refdownval (awk, test);
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break;
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}
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xp_awk_refdownval (awk, test);
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}
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else
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{
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if (__run_statement(awk,nde->body) == -1)
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{
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return -1;
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}
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}
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if (awk->run.exit_level == EXIT_BREAK)
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{
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awk->run.exit_level = EXIT_NONE;
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break;
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}
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else if (awk->run.exit_level == EXIT_CONTINUE)
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{
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awk->run.exit_level = EXIT_NONE;
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}
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else if (awk->run.exit_level != EXIT_NONE) break;
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if (nde->incr != XP_NULL)
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{
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if (__eval_expression(awk,nde->incr) == XP_NULL) return -1;
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}
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}
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return 0;
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}
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static int __run_break_statement (xp_awk_t* awk, xp_awk_nde_break_t* nde)
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{
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awk->run.exit_level = EXIT_BREAK;
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return 0;
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}
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static int __run_continue_statement (xp_awk_t* awk, xp_awk_nde_continue_t* nde)
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{
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awk->run.exit_level = EXIT_CONTINUE;
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return 0;
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}
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static int __run_return_statement (xp_awk_t* awk, xp_awk_nde_return_t* nde)
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{
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if (nde->val != XP_NULL)
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{
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xp_awk_val_t* val;
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//xp_printf (XP_TEXT("returning....\n"));
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val = __eval_expression(awk, nde->val);
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if (val == XP_NULL)
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{
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// TODO: error handling
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return -1;
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}
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STACK_RETVAL(awk) = val;
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xp_awk_refupval (val); /* see run_funccall for the trick */
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//xp_printf (XP_TEXT("set return value....\n"));
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}
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awk->run.exit_level = EXIT_FUNCTION;
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return 0;
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}
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static int __run_exit_statement (xp_awk_t* awk, xp_awk_nde_exit_t* nde)
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{
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if (nde->val != XP_NULL)
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{
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xp_awk_val_t* val;
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val = __eval_expression(awk, nde->val);
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if (val == XP_NULL)
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{
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// TODO: error handling
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return -1;
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}
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// TODO: check out the line below..
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awk->run.stack[2] = val; /* global return value */
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xp_awk_refupval (val);
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}
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awk->run.exit_level = EXIT_GLOBAL;
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return 0;
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}
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static xp_awk_val_t* __eval_expression (xp_awk_t* awk, xp_awk_nde_t* nde)
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{
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xp_awk_val_t* val;
|
|
|
|
switch (nde->type)
|
|
{
|
|
case XP_AWK_NDE_ASS:
|
|
val = __eval_assignment (awk, (xp_awk_nde_ass_t*)nde);
|
|
break;
|
|
|
|
case XP_AWK_NDE_EXP_BIN:
|
|
val = __eval_binary (awk, (xp_awk_nde_exp_t*)nde);
|
|
break;
|
|
|
|
case XP_AWK_NDE_EXP_UNR:
|
|
val = __eval_unary (awk, (xp_awk_nde_exp_t*)nde);
|
|
break;
|
|
|
|
case XP_AWK_NDE_EXP_INCPRE:
|
|
val = __eval_incpre (awk, (xp_awk_nde_exp_t*)nde);
|
|
break;
|
|
|
|
case XP_AWK_NDE_EXP_INCPST:
|
|
val = __eval_incpst (awk, (xp_awk_nde_exp_t*)nde);
|
|
break;
|
|
|
|
case XP_AWK_NDE_STR:
|
|
val = xp_awk_makestrval (
|
|
((xp_awk_nde_str_t*)nde)->buf,
|
|
((xp_awk_nde_str_t*)nde)->len);
|
|
break;
|
|
|
|
case XP_AWK_NDE_INT:
|
|
val = xp_awk_makeintval (
|
|
awk, ((xp_awk_nde_int_t*)nde)->val);
|
|
break;
|
|
|
|
case XP_AWK_NDE_REAL:
|
|
val = xp_awk_makerealval (
|
|
awk, ((xp_awk_nde_real_t*)nde)->val);
|
|
break;
|
|
|
|
case XP_AWK_NDE_NAMED:
|
|
{
|
|
xp_awk_nde_var_t* tgt = (xp_awk_nde_var_t*)nde;
|
|
xp_awk_pair_t* pair;
|
|
|
|
pair = xp_awk_map_get(&awk->run.named,tgt->id.name);
|
|
val = (pair == XP_NULL)? xp_awk_val_nil: pair->val;
|
|
}
|
|
break;
|
|
|
|
case XP_AWK_NDE_GLOBAL:
|
|
{
|
|
xp_awk_nde_var_t* tgt = (xp_awk_nde_var_t*)nde;
|
|
val = STACK_GLOBAL(awk,tgt->id.idxa);
|
|
}
|
|
break;
|
|
|
|
case XP_AWK_NDE_LOCAL:
|
|
{
|
|
xp_awk_nde_var_t* tgt = (xp_awk_nde_var_t*)nde;
|
|
val = STACK_LOCAL(awk,tgt->id.idxa);
|
|
}
|
|
break;
|
|
|
|
case XP_AWK_NDE_ARG:
|
|
{
|
|
xp_awk_nde_var_t* tgt = (xp_awk_nde_var_t*)nde;
|
|
val = STACK_ARG(awk,tgt->id.idxa);
|
|
}
|
|
break;
|
|
|
|
case XP_AWK_NDE_NAMEDIDX:
|
|
break;
|
|
case XP_AWK_NDE_GLOBALIDX:
|
|
break;
|
|
case XP_AWK_NDE_LOCALIDX:
|
|
break;
|
|
case XP_AWK_NDE_ARGIDX:
|
|
break;
|
|
|
|
case XP_AWK_NDE_POS:
|
|
break;
|
|
|
|
case XP_AWK_NDE_CALL:
|
|
val = __eval_funccall(awk, (xp_awk_nde_call_t*)nde);
|
|
if (val == XP_NULL) return XP_NULL;
|
|
break;
|
|
|
|
default:
|
|
/* somthing wrong. internal error */
|
|
/* TODO: set the error code instead of assertion below */
|
|
xp_assert (XP_TEXT("should never happen") == XP_NULL);
|
|
return XP_NULL;
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_assignment (xp_awk_t* awk, xp_awk_nde_ass_t* nde)
|
|
{
|
|
xp_awk_val_t* val;
|
|
|
|
xp_assert (nde->left != XP_NULL && nde->right != XP_NULL);
|
|
|
|
val = __eval_expression(awk, nde->right);
|
|
if (val == XP_NULL) return XP_NULL;
|
|
|
|
return __do_assignment (awk, (xp_awk_nde_var_t*)nde->left, val);
|
|
}
|
|
|
|
static xp_awk_val_t* __do_assignment (
|
|
xp_awk_t* awk, xp_awk_nde_var_t* var, xp_awk_val_t* val)
|
|
{
|
|
if (var->type == XP_AWK_NDE_NAMED)
|
|
{
|
|
xp_awk_pair_t* pair;
|
|
xp_char_t* name;
|
|
|
|
pair = xp_awk_map_get(&awk->run.named, var->id.name);
|
|
if (pair == XP_NULL)
|
|
{
|
|
name = xp_strdup (var->id.name);
|
|
if (name == XP_NULL)
|
|
{
|
|
xp_awk_freeval (awk, val);
|
|
awk->errnum = XP_AWK_ENOMEM;
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
name = pair->key;
|
|
}
|
|
|
|
if (xp_awk_map_put(&awk->run.named, name, val) == XP_NULL)
|
|
{
|
|
xp_free (name);
|
|
xp_awk_freeval (awk, val);
|
|
awk->errnum = XP_AWK_ENOMEM;
|
|
return XP_NULL;
|
|
}
|
|
|
|
xp_awk_refupval (val);
|
|
}
|
|
else if (var->type == XP_AWK_NDE_GLOBAL)
|
|
{
|
|
xp_awk_refdownval (awk, STACK_GLOBAL(awk,var->id.idxa));
|
|
STACK_GLOBAL(awk,var->id.idxa) = val;
|
|
xp_awk_refupval (val);
|
|
}
|
|
else if (var->type == XP_AWK_NDE_LOCAL)
|
|
{
|
|
xp_awk_refdownval (awk, STACK_LOCAL(awk,var->id.idxa));
|
|
STACK_LOCAL(awk,var->id.idxa) = val;
|
|
xp_awk_refupval (val);
|
|
}
|
|
else if (var->type == XP_AWK_NDE_ARG)
|
|
{
|
|
xp_awk_refdownval (awk, STACK_ARG(awk,var->id.idxa));
|
|
STACK_ARG(awk,var->id.idxa) = val;
|
|
xp_awk_refupval (val);
|
|
}
|
|
else if (var->type == XP_AWK_NDE_NAMEDIDX)
|
|
{
|
|
}
|
|
else if (var->type == XP_AWK_NDE_GLOBALIDX)
|
|
{
|
|
}
|
|
else if (var->type == XP_AWK_NDE_LOCALIDX)
|
|
{
|
|
}
|
|
else if (var->type == XP_AWK_NDE_ARGIDX)
|
|
{
|
|
}
|
|
else
|
|
{
|
|
/* this should never be reached. something wrong */
|
|
// TODO: set errnum .... error handling
|
|
return XP_NULL;
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binary (xp_awk_t* awk, xp_awk_nde_exp_t* nde)
|
|
{
|
|
xp_awk_val_t* left, * right, * res;
|
|
static binop_func_t __binop_func[] =
|
|
{
|
|
__eval_binop_lor,
|
|
__eval_binop_land,
|
|
__eval_binop_bor,
|
|
__eval_binop_bxor,
|
|
__eval_binop_band,
|
|
|
|
__eval_binop_eq,
|
|
__eval_binop_ne,
|
|
__eval_binop_gt,
|
|
__eval_binop_ge,
|
|
__eval_binop_lt,
|
|
__eval_binop_le,
|
|
|
|
__eval_binop_lshift,
|
|
__eval_binop_rshift,
|
|
|
|
__eval_binop_plus,
|
|
__eval_binop_minus,
|
|
__eval_binop_mul,
|
|
__eval_binop_div,
|
|
__eval_binop_mod
|
|
};
|
|
|
|
xp_assert (nde->type == XP_AWK_NDE_EXP_BIN);
|
|
|
|
left = __eval_expression (awk, nde->left);
|
|
if (left == XP_NULL) return XP_NULL;
|
|
|
|
xp_awk_refupval (left);
|
|
|
|
right = __eval_expression (awk, nde->right);
|
|
if (right == XP_NULL)
|
|
{
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
|
|
xp_awk_refupval (right);
|
|
|
|
xp_assert (nde->opcode >= 0 &&
|
|
nde->opcode < xp_countof(__binop_func));
|
|
|
|
res = __binop_func[nde->opcode] (awk, left, right);
|
|
// TODO: do i need to handle error here or in binop_func???
|
|
|
|
xp_awk_refdownval (awk, left);
|
|
xp_awk_refdownval (awk, right);
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_lor (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val ||
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
else
|
|
{
|
|
/* TODO: trigger error */
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_land (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val &&
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
else
|
|
{
|
|
// TODO: trigger error
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_bor (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val |
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_bxor (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val ^
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_band (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val &
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_eq (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val ==
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_ne (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val !=
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_gt (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val >
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_ge (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val >=
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_lt (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val <
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_le (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val <=
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_lshift (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val <<
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_rshift (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val >>
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_plus (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val +
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL &&
|
|
right->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r =
|
|
((xp_awk_val_real_t*)left)->val +
|
|
((xp_awk_val_real_t*)right)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
}
|
|
else if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r =
|
|
((xp_awk_val_int_t*)left)->val +
|
|
((xp_awk_val_real_t*)right)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_real_t r =
|
|
((xp_awk_val_real_t*)left)->val +
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
}
|
|
else
|
|
{
|
|
/* TODO: trigger error */
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_minus (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val -
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL &&
|
|
right->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r =
|
|
((xp_awk_val_real_t*)left)->val -
|
|
((xp_awk_val_real_t*)right)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
}
|
|
else if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r =
|
|
((xp_awk_val_int_t*)left)->val -
|
|
((xp_awk_val_real_t*)right)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_real_t r =
|
|
((xp_awk_val_real_t*)left)->val -
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
}
|
|
else
|
|
{
|
|
/* TODO: trigger error */
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_mul (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val *
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_div (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val /
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_binop_mod (
|
|
xp_awk_t* awk, xp_awk_val_t* left, xp_awk_val_t* right)
|
|
{
|
|
xp_awk_val_t* res = XP_NULL;
|
|
|
|
if (left->type == XP_AWK_VAL_INT &&
|
|
right->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r =
|
|
((xp_awk_val_int_t*)left)->val %
|
|
((xp_awk_val_int_t*)right)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TOOD: error handling
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_unary (xp_awk_t* awk, xp_awk_nde_exp_t* nde)
|
|
{
|
|
xp_awk_val_t* left, * res;
|
|
|
|
xp_assert (nde->type == XP_AWK_NDE_EXP_UNR);
|
|
xp_assert (nde->left != XP_NULL && nde->right == XP_NULL);
|
|
|
|
left = __eval_expression (awk, nde->left);
|
|
if (left == XP_NULL) return XP_NULL;
|
|
|
|
xp_awk_refupval (left);
|
|
|
|
// TODO: a lot of things to do....
|
|
if (nde->opcode == XP_AWK_UNROP_PLUS)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
// TODO: error handling
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
else if (nde->opcode == XP_AWK_UNROP_MINUS)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, -r);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, -r);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
// TODO: error handling
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
else if (nde->opcode == XP_AWK_UNROP_NOT)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, !r);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, !r);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
// TODO: error handling
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
else if (nde->opcode == XP_AWK_UNROP_BNOT)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, ~r);
|
|
}
|
|
else
|
|
{
|
|
// TODO: error handling
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
|
|
xp_awk_refdownval (awk, left);
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_incpre (xp_awk_t* awk, xp_awk_nde_exp_t* nde)
|
|
{
|
|
xp_awk_val_t* left, * res;
|
|
|
|
xp_assert (nde->type == XP_AWK_NDE_EXP_INCPRE);
|
|
xp_assert (nde->left != XP_NULL && nde->right == XP_NULL);
|
|
|
|
/* ugly. but let's keep going this way for the time being */
|
|
if (nde->left->type != XP_AWK_NDE_ARG &&
|
|
nde->left->type != XP_AWK_NDE_ARGIDX &&
|
|
nde->left->type != XP_AWK_NDE_NAMED &&
|
|
nde->left->type != XP_AWK_NDE_NAMEDIDX &&
|
|
nde->left->type != XP_AWK_NDE_GLOBAL &&
|
|
nde->left->type != XP_AWK_NDE_GLOBALIDX &&
|
|
nde->left->type != XP_AWK_NDE_LOCAL &&
|
|
nde->left->type != XP_AWK_NDE_LOCALIDX)
|
|
{
|
|
// TOOD: error handling..
|
|
return XP_NULL;
|
|
}
|
|
|
|
left = __eval_expression (awk, nde->left); // TODO: do it differently
|
|
if (left == XP_NULL) return XP_NULL;
|
|
|
|
xp_awk_refupval (left);
|
|
|
|
if (nde->opcode == XP_AWK_UNROP_PLUS)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, r + 1);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, r + 1.0);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
// TOOD: error handling..
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
else if (nde->opcode == XP_AWK_UNROP_MINUS)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, r - 1);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, r - 1.0);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
// TOOD: error handling..
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
|
|
if (__do_assignment (awk,
|
|
(xp_awk_nde_var_t*)nde->left, res) == XP_NULL)
|
|
{
|
|
// TODO: error handling
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
|
|
xp_awk_refdownval (awk, left);
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_incpst (xp_awk_t* awk, xp_awk_nde_exp_t* nde)
|
|
{
|
|
xp_awk_val_t* left, * res, * res2;
|
|
|
|
xp_assert (nde->type == XP_AWK_NDE_EXP_INCPST);
|
|
xp_assert (nde->left != XP_NULL && nde->right == XP_NULL);
|
|
|
|
/* ugly. but let's keep going this way for the time being */
|
|
if (nde->left->type != XP_AWK_NDE_ARG &&
|
|
nde->left->type != XP_AWK_NDE_ARGIDX &&
|
|
nde->left->type != XP_AWK_NDE_NAMED &&
|
|
nde->left->type != XP_AWK_NDE_NAMEDIDX &&
|
|
nde->left->type != XP_AWK_NDE_GLOBAL &&
|
|
nde->left->type != XP_AWK_NDE_GLOBALIDX &&
|
|
nde->left->type != XP_AWK_NDE_LOCAL &&
|
|
nde->left->type != XP_AWK_NDE_LOCALIDX) // TODO: what about NDE_POS?
|
|
{
|
|
// TOOD: error handling..
|
|
return XP_NULL;
|
|
}
|
|
|
|
left = __eval_expression (awk, nde->left); // TODO: do it differently
|
|
if (left == XP_NULL) return XP_NULL;
|
|
|
|
xp_awk_refupval (left);
|
|
|
|
left = __eval_expression (awk, nde->left); // TODO: get the actual target...
|
|
if (left == XP_NULL) return XP_NULL;
|
|
|
|
xp_awk_refupval (left);
|
|
|
|
if (nde->opcode == XP_AWK_UNROP_PLUS)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TODO: error handling
|
|
|
|
res2 = xp_awk_makeintval (awk, r + 1);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
// TODO: error handling
|
|
|
|
res2 = xp_awk_makerealval (awk, r + 1.0);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
else if (nde->opcode == XP_AWK_UNROP_MINUS)
|
|
{
|
|
if (left->type == XP_AWK_VAL_INT)
|
|
{
|
|
xp_long_t r = ((xp_awk_val_int_t*)left)->val;
|
|
res = xp_awk_makeintval (awk, r);
|
|
// TODO: error handling
|
|
res2 = xp_awk_makeintval (awk, r - 1);
|
|
// TODO: error handling
|
|
}
|
|
else if (left->type == XP_AWK_VAL_REAL)
|
|
{
|
|
xp_real_t r = ((xp_awk_val_real_t*)left)->val;
|
|
res = xp_awk_makerealval (awk, r);
|
|
// TODO: error handling
|
|
res2 = xp_awk_makerealval (awk, r - 1.0);
|
|
// TODO: error handling
|
|
}
|
|
else
|
|
{
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
}
|
|
|
|
if (__do_assignment (awk,
|
|
(xp_awk_nde_var_t*)nde->left, res2) == XP_NULL)
|
|
{
|
|
// TODO: error handling
|
|
xp_awk_refdownval (awk, left);
|
|
return XP_NULL;
|
|
}
|
|
|
|
xp_awk_refdownval (awk, left);
|
|
|
|
return res;
|
|
}
|
|
|
|
static xp_awk_val_t* __eval_funccall (xp_awk_t* awk, xp_awk_nde_call_t* nde)
|
|
{
|
|
xp_awk_func_t* func;
|
|
xp_awk_pair_t* pair;
|
|
xp_awk_nde_t* p;
|
|
xp_size_t nargs, i;
|
|
xp_awk_val_t* v;
|
|
xp_size_t saved_stack_top;
|
|
|
|
pair = xp_awk_map_get (&awk->tree.funcs, nde->name);
|
|
if (pair == XP_NULL) return XP_NULL; /* no such function */
|
|
|
|
/*
|
|
* ---------------------
|
|
* locn <- stack top
|
|
* ---------------------
|
|
* ....
|
|
* ---------------------
|
|
* loc0 local variables are pushed by __run_block
|
|
* ---------------------
|
|
* argn
|
|
* ---------------------
|
|
* ....
|
|
* ---------------------
|
|
* arg1
|
|
* ---------------------
|
|
* arg0
|
|
* ---------------------
|
|
* nargs
|
|
* ---------------------
|
|
* return value
|
|
* ---------------------
|
|
* previous stack top
|
|
* ---------------------
|
|
* previous stack base <- stack base
|
|
* ---------------------
|
|
*/
|
|
|
|
xp_assert (xp_sizeof(void*) >= xp_sizeof(awk->run.stack_top));
|
|
xp_assert (xp_sizeof(void*) >= xp_sizeof(awk->run.stack_base));
|
|
|
|
saved_stack_top = awk->run.stack_top;
|
|
|
|
//xp_printf (XP_TEXT("setting up function stack frame stack_top = %ld stack_base = %ld\n"), awk->run.stack_top, awk->run.stack_base);
|
|
if (__raw_push(awk,(void*)awk->run.stack_base) == -1) return XP_NULL;
|
|
if (__raw_push(awk,(void*)saved_stack_top) == -1)
|
|
{
|
|
/* TODO: run.stack recovery */
|
|
return XP_NULL;
|
|
}
|
|
|
|
/* secure space for return value. */
|
|
if (__raw_push(awk,xp_awk_val_nil) == -1)
|
|
{
|
|
/* TODO: run.stack recovery */
|
|
return XP_NULL;
|
|
}
|
|
|
|
/* secure space for nargs */
|
|
if (__raw_push(awk,xp_awk_val_nil) == -1)
|
|
{
|
|
/* TODO: run.stack recovery */
|
|
return XP_NULL;
|
|
}
|
|
|
|
nargs = 0;
|
|
p = nde->args;
|
|
while (p != XP_NULL)
|
|
{
|
|
v = __eval_expression(awk,p);
|
|
if (v == XP_NULL)
|
|
{
|
|
/* TODO: run.stack recovery */
|
|
return XP_NULL;
|
|
}
|
|
|
|
if (__raw_push(awk,v) == -1)
|
|
{
|
|
/* TODO: run.stack recovery */
|
|
return XP_NULL;
|
|
}
|
|
|
|
xp_awk_refupval (v);
|
|
nargs++;
|
|
p = p->next;
|
|
}
|
|
|
|
awk->run.stack_base = saved_stack_top;
|
|
awk->run.stack[awk->run.stack_base+3] = (void*)nargs;
|
|
|
|
func = (xp_awk_func_t*)pair->val;
|
|
xp_assert (func != XP_NULL);
|
|
|
|
// TODO: do i need to check if the number of arguments matches the actual arguments...???? this might be the compiler job...
|
|
|
|
//xp_printf (XP_TEXT("running function body\n"));
|
|
|
|
xp_assert (func->body->type == XP_AWK_NDE_BLK);
|
|
if (__run_block(awk,(xp_awk_nde_blk_t*)func->body) == -1)
|
|
{
|
|
// TODO: handle error properly....
|
|
return XP_NULL;
|
|
}
|
|
|
|
//xp_printf (XP_TEXT("block run complete\n"));
|
|
|
|
/* refdown args in the run.stack */
|
|
nargs = STACK_NARGS(awk);
|
|
//xp_printf (XP_TEXT("block run complete nargs = %d\n"), nargs);
|
|
for (i = 0; i < nargs; i++)
|
|
{
|
|
xp_awk_refdownval (awk, STACK_ARG(awk,i));
|
|
}
|
|
//xp_printf (XP_TEXT("got return value\n"));
|
|
|
|
/* adjust the reference count of the return value.
|
|
* the value must not be freeed event if the reference count
|
|
* is decremented to zero. */
|
|
v = STACK_RETVAL(awk);
|
|
xp_awk_refdownval_nofree (awk, v);
|
|
|
|
awk->run.stack_top = (xp_size_t)awk->run.stack[awk->run.stack_base+1];
|
|
awk->run.stack_base = (xp_size_t)awk->run.stack[awk->run.stack_base+0];
|
|
|
|
if (awk->run.exit_level == EXIT_FUNCTION)
|
|
{
|
|
awk->run.exit_level = EXIT_NONE;
|
|
}
|
|
|
|
//xp_printf (XP_TEXT("returning from function stack_top=%ld, stack_base=%ld\n"), awk->run.stack_top, awk->run.stack_base);
|
|
return v;
|
|
}
|
|
|
|
static int __raw_push (xp_awk_t* awk, void* val)
|
|
{
|
|
if (awk->run.stack_top >= awk->run.stack_limit)
|
|
{
|
|
void* tmp;
|
|
xp_size_t n;
|
|
|
|
n = awk->run.stack_limit + STACK_INCREMENT;
|
|
tmp = (void**)xp_realloc (awk->run.stack, n * xp_sizeof(void*));
|
|
if (tmp == XP_NULL) return -1;
|
|
|
|
awk->run.stack = tmp;
|
|
awk->run.stack_limit = n;
|
|
}
|
|
|
|
awk->run.stack[awk->run.stack_top++] = val;
|
|
return 0;
|
|
}
|
|
|
|
static void __raw_pop (xp_awk_t* awk)
|
|
{
|
|
xp_assert (awk->run.stack_top > awk->run.stack_base);
|
|
awk->run.stack_top--;
|
|
}
|
|
|