76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
#include <hawk.h>
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#include <stdio.h>
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#include <string.h>
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static const hawk_bch_t* src =
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"BEGIN {"
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" for (i=2;i<=9;i++)"
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" {"
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" for (j=1;j<=9;j++)"
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" print i \"*\" j \"=\" i * j;"
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" print \"---------------------\";"
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" }"
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"}";
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int main ()
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{
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hawk_t* hawk = HAWK_NULL;
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hawk_rtx_t* rtx = HAWK_NULL;
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hawk_val_t* retv;
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hawk_parsestd_t psin[2];
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int ret;
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hawk = hawk_openstd(0, HAWK_NULL); /* create a hawk instance */
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if (!hawk)
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{
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fprintf (stderr, "ERROR: cannot open hawk\n");
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ret = -1; goto oops;
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}
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/* set up source script file to read in */
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memset (&psin, 0, HAWK_SIZEOF(psin));
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psin[0].type = HAWK_PARSESTD_BCS; /* specify the first script path */
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psin[0].u.bcs.ptr = (hawk_bch_t*)src;
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psin[0].u.bcs.len = hawk_count_bcstr(src);
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psin[1].type = HAWK_PARSESTD_NULL; /* indicate the no more script to read */
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ret = hawk_parsestd(hawk, psin, HAWK_NULL); /* parse the script */
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if (ret <= -1)
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{
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hawk_logbfmt(hawk, HAWK_LOG_STDERR, "ERROR(parse): %js\n", hawk_geterrmsg(hawk));
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ret = -1; goto oops;
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}
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/* create a runtime context needed for execution */
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rtx = hawk_rtx_openstd(
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hawk,
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0,
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HAWK_T("hawk02"),
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HAWK_NULL, /* stdin */
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HAWK_NULL, /* stdout */
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HAWK_NULL /* default cmgr */
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);
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if (!rtx)
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{
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hawk_logbfmt(hawk, HAWK_LOG_STDERR, "ERROR(rtx_open): %js\n", hawk_geterrmsg(hawk));
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ret = -1; goto oops;
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}
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/* execute the BEGIN/pattern-action/END blocks */
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retv = hawk_rtx_loop(rtx);
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if (!retv)
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{
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hawk_logbfmt(hawk, HAWK_LOG_STDERR, "ERROR(rtx_loop): %js\n", hawk_geterrmsg(hawk));
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ret = -1; goto oops;
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}
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/* lowered the reference count of the returned value */
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hawk_rtx_refdownval(rtx, retv);
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ret = 0;
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oops:
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if (rtx) hawk_rtx_close(rtx); /* destroy the runtime context */
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if (hawk) hawk_close(hawk); /* destroy the hawk instance */
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return -1;
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}
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