
(********************************************************************)
(*                                                                  *)
(*  prg_act.s7i   Generate code for actions of the type program.    *)
(*  Copyright (C) 1990 - 1994, 2004 - 2014  Thomas Mertes           *)
(*                                                                  *)
(*  This file is part of the Seed7 compiler.                        *)
(*                                                                  *)
(*  This program is free software; you can redistribute it and/or   *)
(*  modify it under the terms of the GNU General Public License as  *)
(*  published by the Free Software Foundation; either version 2 of  *)
(*  the License, or (at your option) any later version.             *)
(*                                                                  *)
(*  This program is distributed in the hope that it will be useful, *)
(*  but WITHOUT ANY WARRANTY; without even the implied warranty of  *)
(*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *)
(*  GNU General Public License for more details.                    *)
(*                                                                  *)
(*  You should have received a copy of the GNU General Public       *)
(*  License along with this program; if not, write to the           *)
(*  Free Software Foundation, Inc., 51 Franklin Street,             *)
(*  Fifth Floor, Boston, MA  02110-1301, USA.                       *)
(*                                                                  *)
(********************************************************************)


const ACTION: PRG_CPY             is action "PRG_CPY";
const ACTION: PRG_EQ              is action "PRG_EQ";
const ACTION: PRG_ERROR_COUNT     is action "PRG_ERROR_COUNT";
const ACTION: PRG_EVAL            is action "PRG_EVAL";
const ACTION: PRG_EXEC            is action "PRG_EXEC";
const ACTION: PRG_FIL_PARSE       is action "PRG_FIL_PARSE";
const ACTION: PRG_GLOBAL_OBJECTS  is action "PRG_GLOBAL_OBJECTS";
const ACTION: PRG_MATCH           is action "PRG_MATCH";
const ACTION: PRG_MATCH_EXPR      is action "PRG_MATCH_EXPR";
const ACTION: PRG_NAME            is action "PRG_NAME";
const ACTION: PRG_NE              is action "PRG_NE";
const ACTION: PRG_OWN_NAME        is action "PRG_OWN_NAME";
const ACTION: PRG_OWN_PATH        is action "PRG_OWN_PATH";
const ACTION: PRG_PATH            is action "PRG_PATH";
const ACTION: PRG_STR_PARSE       is action "PRG_STR_PARSE";
const ACTION: PRG_SYOBJECT        is action "PRG_SYOBJECT";
const ACTION: PRG_SYSVAR          is action "PRG_SYSVAR";
const ACTION: PRG_VALUE           is action "PRG_VALUE";


const proc: prg_prototypes (inout file: c_prog) is func

  begin
    declareExtern(c_prog, "void        prgCpy (progType *const, const progType);");
    declareExtern(c_prog, "progType    prgCreate (const progType);");
    declareExtern(c_prog, "void        prgDestr (progType);");
    declareExtern(c_prog, "intType     prgErrorCount (const const_progType);");
    declareExtern(c_prog, "objRefType  prgEval (progType, objRefType);");
    declareExtern(c_prog, "void        prgExec (const const_progType, const const_arrayType, const_setType, const_striType);");
    declareExtern(c_prog, "progType    prgFilParse (const const_striType, const_setType, const const_arrayType, const_striType);");
    declareExtern(c_prog, "listType    prgGlobalObjects (const const_progType);");
    declareExtern(c_prog, "objRefType  prgMatch (const const_progType, listType);");
    declareExtern(c_prog, "objRefType  prgMatchExpr (const const_progType, listType);");
    declareExtern(c_prog, "const_striType prgName (const const_progType);");
    declareExtern(c_prog, "const_striType prgPath (const const_progType);");
    declareExtern(c_prog, "progType    prgStrParse (const const_striType, const_setType, const const_arrayType, const_striType);");
    declareExtern(c_prog, "objRefType  prgSyobject (const progType, const const_striType);");
    declareExtern(c_prog, "objRefType  prgSysvar (const const_progType, const const_striType);");
    declareExtern(c_prog, "progType    prgValue (const const_objRefType);");
  end func;


const proc: process (PRG_CPY, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  local
    var expr_type: c_param1 is expr_type.value;
    var expr_type: c_param3 is expr_type.value;
  begin
    compilerLibraryUsed := TRUE;
    process_expr(params[1], c_param1);
    c_param3.temp_num := c_param1.temp_num;
    process_expr(params[3], c_param3);
    if has_temp_values(c_param3) then
      c_expr.expr &:= "{\n";
      appendWithDiagnostic(c_param1.temp_decls, c_expr);
      appendWithDiagnostic(c_param3.temp_decls, c_expr);
      appendWithDiagnostic(c_param1.temp_assigns, c_expr);
      appendWithDiagnostic(c_param3.temp_assigns, c_expr);
    end if;
    if c_param3.result_expr <> "" then
      c_expr.expr &:= "{\n";
      setDiagnosticLine(c_expr);
      if isNormalVariable(params[1]) then
        c_expr.expr &:= "progType old_prog=";
        c_expr.expr &:= c_param1.expr;
        c_expr.expr &:= ";\n";
        setDiagnosticLine(c_expr);
        c_expr.expr &:= c_param1.expr;
        c_expr.expr &:= "=";
      else
        c_expr.expr &:= "progType *prg_ptr=&(";
        c_expr.expr &:= c_param1.expr;
        c_expr.expr &:= ");\n";
        setDiagnosticLine(c_expr);
        c_expr.expr &:= "progType old_prog=*prg_ptr;\n";
        setDiagnosticLine(c_expr);
        c_expr.expr &:= "*prg_ptr=";
      end if;
      c_expr.expr &:= c_param3.result_expr;
      c_expr.expr &:= ";\n";
      setDiagnosticLine(c_expr);
      c_expr.expr &:= "prgDestr(old_prog);\n";
      c_expr.expr &:= "}\n";
    else
      setDiagnosticLine(c_expr);
      c_expr.expr &:= "prgCpy(&(";
      c_expr.expr &:= c_param1.expr;
      c_expr.expr &:= "), ";
      c_expr.expr &:= c_param3.expr;
      c_expr.expr &:= ");\n";
    end if;
    if has_temp_values(c_param3) then
      appendWithDiagnostic(c_param1.temp_frees, c_expr);
      appendWithDiagnostic(c_param3.temp_frees, c_expr);
      c_expr.expr &:= "}\n";
    end if;
  end func;


const proc: process (PRG_EQ, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    c_expr.expr &:= "(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ") == (";
    process_expr(params[3], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_ERROR_COUNT, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgErrorCount(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_EVAL, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgEval(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ", ";
    process_expr(params[2], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_EXEC, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgExec(";
    getAnyParamToExpr(params[1], c_expr);
    c_expr.expr &:= ", ";
    getAnyParamToExpr(params[2], c_expr);
    c_expr.expr &:= ", ";
    getAnyParamToExpr(params[3], c_expr);
    c_expr.expr &:= ", ";
    getAnyParamToExpr(params[4], c_expr);
    c_expr.expr &:= ");\n";
  end func;


const proc: process (PRG_FIL_PARSE, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    prepare_prog_result(c_expr);
    c_expr.result_expr := "prgFilParse(";
    getAnyParamToResultExpr(params[1], c_expr);
    c_expr.result_expr &:= ", ";
    getAnyParamToResultExpr(params[2], c_expr);
    c_expr.result_expr &:= ", ";
    getAnyParamToResultExpr(params[3], c_expr);
    c_expr.result_expr &:= ", ";
    getAnyParamToResultExpr(params[4], c_expr);
    c_expr.result_expr &:= ")";
  end func;


const proc: process (PRG_GLOBAL_OBJECTS, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    prepare_list_result(resultType(getType(function)), c_expr);
    c_expr.result_expr := "prgGlobalObjects(";
    getAnyParamToResultExpr(params[1], c_expr);
    c_expr.result_expr &:= ")";
  end func;


const proc: process (PRG_MATCH, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgMatch(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ", ";
    process_expr(params[2], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_MATCH_EXPR, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgMatchExpr(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ", ";
    process_expr(params[2], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_NAME, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgName(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_NE, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    c_expr.expr &:= "(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ") != (";
    process_expr(params[3], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_OWN_NAME, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    c_expr.expr &:= "programName";
  end func;


const proc: process (PRG_OWN_PATH, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    c_expr.expr &:= "programPath";
  end func;


const proc: process (PRG_PATH, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgPath(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_STR_PARSE, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    prepare_prog_result(c_expr);
    c_expr.result_expr := "prgStrParse(";
    getAnyParamToResultExpr(params[1], c_expr);
    c_expr.result_expr &:= ", ";
    getAnyParamToResultExpr(params[2], c_expr);
    c_expr.result_expr &:= ", ";
    getAnyParamToResultExpr(params[3], c_expr);
    c_expr.result_expr &:= ", ";
    getAnyParamToResultExpr(params[4], c_expr);
    c_expr.result_expr &:= ")";
  end func;


const proc: process (PRG_SYOBJECT, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgSyobject(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ", ";
    process_expr(params[2], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_SYSVAR, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgSysvar(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ", ";
    process_expr(params[2], c_expr);
    c_expr.expr &:= ")";
  end func;


const proc: process (PRG_VALUE, in reference: function,
    in ref_list: params, inout expr_type: c_expr) is func

  begin
    compilerLibraryUsed := TRUE;
    c_expr.expr &:= "prgValue(";
    process_expr(params[1], c_expr);
    c_expr.expr &:= ")";
  end func;
