75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
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#include <stdio.h>
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#include "symtab.h"
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#include "expr.h"
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#include "sizes.h"
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void init_builtins()
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/* Insert all builtin names into the outermost symbol table (first statement
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* is sym_down() ). Note that this table is never destroy()ed, so static
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* initializers may be used.
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*/
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{
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union type_info info;
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static char file[]="file";
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static struct par_list
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open_list[] = {
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{ &open_list[1], nil, T_VAR }, /* File descriptor */
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{ &open_list[2], nil, T_VALUE|T_ARR }, /* File name */
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{ nil, nil, T_VALUE|T_ARR } /* "r", "w", "a" */
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},
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close_list[]= {
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{ nil, nil, T_VALUE } /* File descriptor */
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},
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exit_list[]= {
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{ nil, nil, T_VALUE } /* Exit code */
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};
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sym_down(); /* Add level of symbols above all others */
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/* CHAN file[20], input=file[0], output=file[1], error=file[2]: */
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info.vc.st.builtin=file;
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info.vc.offset=0;
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insert(file, T_CHAN|T_ARR|T_BUILTIN, _NFILE, info);
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info.vc.st.builtin=file;
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info.vc.offset=0;
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insert("input", T_CHAN|T_BUILTIN, 1, info);
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info.vc.st.builtin=file;
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info.vc.offset=wz+pz;
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insert("output", T_CHAN|T_BUILTIN, 1, info);
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info.vc.st.builtin=file;
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info.vc.offset=2*(wz+pz);
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insert("error", T_CHAN|T_BUILTIN, 1, info);
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/* DEF EOF= -1, TEXT= -2, RAW= -3: */
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info.const=new_const(-1L);
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insert("EOF", T_CONST|T_BUILTIN, 0, info);
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info.const=new_const(-2L);
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insert("TEXT", T_CONST|T_BUILTIN, 0, info);
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info.const=new_const(-3L);
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insert("RAW", T_CONST|T_BUILTIN, 0, info);
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/* PROC open(VAR fd, VALUE name[], mode[])= .... : */
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info.proc.st.builtin="b_open";
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info.proc.pars=open_list;
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insert("open", T_PROC|T_BUILTIN, 0, info);
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/* PROC close(VALUE fd)= .... : */
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info.proc.st.builtin="b_close";
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info.proc.pars=close_list;
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insert("close", T_PROC|T_BUILTIN, 0, info);
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/* PROC exit(VALUE code)= .... : */
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info.proc.st.builtin="b_exit";
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info.proc.pars=exit_list;
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insert("exit", T_PROC|T_BUILTIN, 0, info);
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}
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