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Enhancement of argument list parsing loop: removing break / continue operators, so that every iteration passes start and end of loop body.

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The change makes possible simple notification of byte-code generator about start / end of byte-code generation for an argument.
As register values are not passed between byte-code sequences that prepare different arguments, the change would make possible for byte-code generator to reuse registers allocated for the code sequences.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan 2015-06-28 17:42:19 +03:00 committed by Evgeny Gavrin
parent 1dc7ed64d6
commit dc095bb902
1 changed files with 41 additions and 46 deletions
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65
jerry-core/parser/js/parser.cpp
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@ -522,61 +522,56 @@ parse_argument_list (varg_list_type vlt, operand obj, uint8_t *args_count, opera
while (!token_is (close_tt)) while (!token_is (close_tt))
{ {
operand op; operand op;
switch (vlt)
{ if (vlt == VARG_FUNC_DECL
case VARG_FUNC_DECL: || vlt == VARG_FUNC_EXPR)
case VARG_FUNC_EXPR:
{ {
current_token_must_be (TOK_NAME); current_token_must_be (TOK_NAME);
op = literal_operand (token_data_as_lit_cp ()); op = literal_operand (token_data_as_lit_cp ());
syntax_add_varg (op); syntax_add_varg (op);
syntax_check_for_eval_and_arguments_in_strict_mode (op, is_strict_mode (), tok.loc); syntax_check_for_eval_and_arguments_in_strict_mode (op, is_strict_mode (), tok.loc);
break; dump_varg (op);
skip_newlines ();
} }
case VARG_ARRAY_DECL: else if (vlt == VARG_CONSTRUCT_EXPR
|| vlt == VARG_CALL_EXPR)
{
op = parse_assignment_expression (true);
dump_varg (op);
skip_newlines ();
}
else if (vlt == VARG_ARRAY_DECL)
{ {
if (token_is (TOK_COMMA)) if (token_is (TOK_COMMA))
{ {
op = dump_undefined_assignment_res (); op = dump_undefined_assignment_res ();
dump_varg (op); dump_varg (op);
args_num++;
skip_newlines ();
continue;
} }
/* FALLTHRU */ else
}
case VARG_CONSTRUCT_EXPR:
{ {
op = parse_assignment_expression (true); op = parse_assignment_expression (true);
break;
}
case VARG_CALL_EXPR:
{
op = parse_assignment_expression (true);
break;
}
case VARG_OBJ_DECL:
{
parse_property_assignment ();
break;
}
}
/* In case of obj_decl prop is already dumped. */
if (vlt != VARG_OBJ_DECL)
{
dump_varg (op); dump_varg (op);
}
args_num++;
skip_newlines (); skip_newlines ();
if (!token_is (TOK_COMMA)) }
}
else
{
JERRY_ASSERT (vlt == VARG_OBJ_DECL);
parse_property_assignment ();
skip_newlines ();
}
if (token_is (TOK_COMMA))
{
skip_newlines ();
}
else
{ {
current_token_must_be (close_tt); current_token_must_be (close_tt);
break;
} }
skip_newlines (); args_num++;
} }
if (args_count != NULL) if (args_count != NULL)