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autofree: move tmp var generation to a separate method

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This commit is contained in:
Alexander Medvednikov 2020-09-13 03:18:13 +02:00
parent 3b589115f0
commit f337980e52
1 changed files with 31 additions and 28 deletions
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59
vlib/v/gen/fn.v
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@ -533,34 +533,7 @@ fn (mut g Gen) fn_call(node ast.CallExpr) {
// `foo<int>()` => `foo_int()`
name += '_' + g.typ(node.generic_type)
}
// g.generate_tmp_autofree_arg_vars()
// Create a temporary var for each argument in order to free it (only if it's a complex expression,
// like `foo(get_string())` or `foo(a + b)`
mut free_tmp_arg_vars := g.autofree && g.pref.experimental && !g.is_builtin_mod &&
node.args.len > 0 && !node.args[0].typ.has_flag(.optional) // TODO copy pasta checker.v
// mut cur_line := ''
if free_tmp_arg_vars {
free_tmp_arg_vars = false // set the flag to true only if we have at least one arg to free
g.tmp_count2++
for i, arg in node.args {
if !arg.is_tmp_autofree {
continue
}
free_tmp_arg_vars = true
// t := g.new_tmp_var() + '_arg_expr_${name}_$i'
fn_name := node.name.replace('.', '_')
t := '_tt${g.tmp_count2}_arg_expr_${fn_name}_$i'
g.called_fn_name = name
str_expr := g.write_expr_to_string(arg.expr)
g.insert_before_stmt('string $t = $str_expr; // new4. to free arg #$i name=$name')
// cur_line = g.go_before_stmt(0)
// println('cur line ="$cur_line"')
// g.writeln('string $t = $str_expr; // new3. to free arg #$i name=$name')
// Now free the tmp arg vars right after the function call
g.strs_to_free << 'string_free(&$t);'
}
// g.strs_to_free << (';')
}
g.generate_tmp_autofree_arg_vars(node, name)
// Handle `print(x)`
if is_print && node.args[0].typ != table.string_type { // && !free_tmp_arg_vars {
typ := node.args[0].typ
@ -640,6 +613,36 @@ fn (mut g Gen) fn_call(node ast.CallExpr) {
g.is_json_fn = false
}
fn (mut g Gen) generate_tmp_autofree_arg_vars(node ast.CallExpr, name string) {
// Create a temporary var for each argument in order to free it (only if it's a complex expression,
// like `foo(get_string())` or `foo(a + b)`
mut free_tmp_arg_vars := g.autofree && g.pref.experimental && !g.is_builtin_mod &&
node.args.len > 0 && !node.args[0].typ.has_flag(.optional) // TODO copy pasta checker.v
// mut cur_line := ''
if free_tmp_arg_vars {
free_tmp_arg_vars = false // set the flag to true only if we have at least one arg to free
g.tmp_count2++
for i, arg in node.args {
if !arg.is_tmp_autofree {
continue
}
free_tmp_arg_vars = true
// t := g.new_tmp_var() + '_arg_expr_${name}_$i'
fn_name := node.name.replace('.', '_') // can't use name...
t := '_tt${g.tmp_count2}_arg_expr_${fn_name}_$i'
g.called_fn_name = name
str_expr := g.write_expr_to_string(arg.expr)
g.insert_before_stmt('string $t = $str_expr; // new4. to free arg #$i name=$name')
// cur_line = g.go_before_stmt(0)
// println('cur line ="$cur_line"')
// g.writeln('string $t = $str_expr; // new3. to free arg #$i name=$name')
// Now free the tmp arg vars right after the function call
g.strs_to_free << 'string_free(&$t);'
}
// g.strs_to_free << (';')
}
}
// fn (mut g Gen) call_args(args []ast.CallArg, expected_types []table.Type, tmp_arg_vars_to_free []string) {
// fn (mut g Gen) call_args(args []ast.CallArg, expected_types []table.Type) {
fn (mut g Gen) call_args(node ast.CallExpr) {