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repl: handle print and one-line conditions

pull/2250/head
Henrixounez 2019-10-06 16:21:10 +02:00 committed by Alexander Medvednikov
parent 03bc5ab3d5
commit 30e7cd8ed5
4 changed files with 55 additions and 45 deletions
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74
compiler/repl.v
View File

@ -11,34 +11,42 @@ struct Repl {
mut:
indent int
in_func bool
line string
lines []string
temp_lines []string
functions_name []string
functions []string
}
fn (r mut Repl) checks(line string) bool {
fn (r mut Repl) checks() bool {
mut in_string := false
mut is_cut := false
was_indent := r.indent > 0
for i := 0; i < line.len; i++ {
if line[i] == `\'` && (i == 0 || line[i - 1] != `\\`) {
for i := 0; i < r.line.len; i++ {
if r.line[i] == `\'` && (i == 0 || r.line[i - 1] != `\\`) {
in_string = !in_string
}
if line[i] == `{` && !in_string {
if r.line[i] == `{` && !in_string {
r.line = r.line.left(i + 1) + '\n' + r.line.right(i + 1)
is_cut = true
i++
r.indent++
}
if line[i] == `}` && !in_string {
if r.line[i] == `}` && !in_string {
r.line = r.line.left(i) + '\n' + r.line.right(i)
is_cut = true
i++
r.indent--
if r.indent == 0 {
r.in_func = false
}
}
if i + 2 < line.len && r.indent == 0 && line[i + 1] == `f` && line[i + 2] == `n` {
if i + 2 < r.line.len && r.indent == 0 && r.line[i + 1] == `f` && r.line[i + 2] == `n` {
r.in_func = true
}
}
return r.in_func || (was_indent && r.indent <= 0) || r.indent > 0
return r.in_func || (was_indent && r.indent <= 0) || r.indent > 0 || is_cut
}
fn (r &Repl) function_call(line string) bool {
@ -81,47 +89,49 @@ fn run_repl() []string {
else {
print('... ')
}
mut line := os.get_raw_line()
if line.trim_space() == '' && line.ends_with('\n') {
r.line = os.get_raw_line()
if r.line.trim_space() == '' && r.line.ends_with('\n') {
continue
}
line = line.trim_space()
if line.len == -1 || line == '' || line == 'exit' {
r.line = r.line.trim_space()
if r.line.len == -1 || r.line == '' || r.line == 'exit' {
break
}
if line == '\n' {
if r.line == '\n' {
continue
}
if line == 'clear' {
if r.line == 'clear' {
term.erase_display('2')
continue
}
if line == 'help' {
if r.line == 'help' {
repl_help()
continue
}
if line.starts_with('fn') {
if r.line.starts_with('fn') {
r.in_func = true
r.functions_name << line.all_after('fn').all_before('(').trim_space()
r.functions_name << r.line.all_after('fn').all_before('(').trim_space()
}
was_func := r.in_func
if r.checks(line) {
if r.in_func || was_func {
r.functions << line
}
else {
r.temp_lines << line
if r.checks() {
for line in r.line.split('\n') {
if r.in_func || was_func {
r.functions << line
}
else {
r.temp_lines << line
}
}
if r.indent > 0 {
continue
}
line = ''
r.line = ''
}
// Save the source only if the user is printing something,
// but don't add this print call to the `lines` array,
// so that it doesn't get called during the next print.
if line.starts_with('print') {
source_code := r.functions.join('\n') + r.lines.join('\n') + '\n' + line
if r.line.starts_with('print') {
source_code := r.functions.join('\n') + r.lines.join('\n') + '\n' + r.line
os.write_file(file, source_code)
s := os.exec('$vexe run $file -repl') or {
verror(err)
@ -133,27 +143,27 @@ fn run_repl() []string {
}
}
else {
mut temp_line := line
mut temp_line := r.line
mut temp_flag := false
func_call := r.function_call(line)
if !(line.contains(' ') || line.contains(':') || line.contains('=') || line.contains(',') || line == '') && !func_call {
temp_line = 'println($line)'
func_call := r.function_call(r.line)
if !(r.line.contains(' ') || r.line.contains(':') || r.line.contains('=') || r.line.contains(',') || r.line == '') && !func_call {
temp_line = 'println($r.line)'
temp_flag = true
}
temp_source_code := r.functions.join('\n') + r.lines.join('\n') + r.temp_lines.join('\n') + '\n' + temp_line
temp_source_code := r.functions.join('\n') + r.lines.join('\n') + '\n' + r.temp_lines.join('\n') + '\n' + temp_line
os.write_file(temp_file, temp_source_code)
s := os.exec('$vexe run $temp_file -repl') or {
verror(err)
return []string
}
if !func_call && s.exit_code == 0 {
if !func_call && s.exit_code == 0 && !temp_flag {
for r.temp_lines.len > 0 {
if !r.temp_lines[0].starts_with('print') {
r.lines << r.temp_lines[0]
}
r.temp_lines.delete(0)
}
r.lines << line
r.lines << r.line
}
else {
for r.temp_lines.len > 0 {

18
compiler/tests/repl/chained_fields.repl
View File

@ -32,47 +32,47 @@
/*(17)*/ e.v << 1 // Error (e immutable)
===output===
.vrepl_temp.v:8:14: cannot modify immutable field `len` (type `string`)
.vrepl_temp.v:27:14: cannot modify immutable field `len` (type `string`)
declare the field with `mut:`
struct string {
mut:
len int
}
.vrepl_temp.v:9:14: cannot modify immutable field `a` (type `B`)
.vrepl_temp.v:30:14: cannot modify immutable field `a` (type `B`)
declare the field with `mut:`
struct B {
mut:
a A
}
.vrepl_temp.v:9:12: cannot modify immutable field `a` (type `B`)
.vrepl_temp.v:29:12: cannot modify immutable field `a` (type `B`)
declare the field with `mut:`
struct B {
mut:
a A
}
.vrepl_temp.v:12:14: cannot modify immutable field `a` (type `B`)
.vrepl_temp.v:41:14: cannot modify immutable field `a` (type `B`)
declare the field with `mut:`
struct B {
mut:
a A
}
.vrepl_temp.v:12:16: cannot modify immutable field `a` (type `B`)
.vrepl_temp.v:42:16: cannot modify immutable field `a` (type `B`)
declare the field with `mut:`
struct B {
mut:
a A
}
.vrepl_temp.v:13:15: `c2` is immutable
.vrepl_temp.v:16:12: cannot modify immutable field `e` (type `F`)
.vrepl_temp.v:44:15: `c2` is immutable
.vrepl_temp.v:53:12: cannot modify immutable field `e` (type `F`)
declare the field with `mut:`
struct F {
mut:
e []E
}
.vrepl_temp.v:16:17: cannot modify immutable field `e` (type `F`)
.vrepl_temp.v:54:17: cannot modify immutable field `e` (type `F`)
declare the field with `mut:`
struct F {
mut:
e []E
}
.vrepl_temp.v:17:17: `e` is immutable (can't <<)
.vrepl_temp.v:57:17: `e` is immutable (can't <<)

2
compiler/tests/repl/error_nosave.repl
View File

@ -1,5 +1,5 @@
a
33
===output===
.vrepl_temp.v:2:9: undefined: `a`
.vrepl_temp.v:3:9: undefined: `a`
33

6
compiler/tests/repl/immutable_len_fields.repl
View File

@ -9,19 +9,19 @@ ints.len = 0 // Error (field len immutable)
println('BYE')
===output===
.vrepl_temp.v:2:5: cannot modify immutable field `len` (type `string`)
.vrepl_temp.v:3:5: cannot modify immutable field `len` (type `string`)
declare the field with `mut:`
struct string {
mut:
len int
}
.vrepl_temp.v:3:5: cannot modify immutable field `len` (type `array`)
.vrepl_temp.v:4:5: cannot modify immutable field `len` (type `array`)
declare the field with `mut:`
struct array {
mut:
len int
}
.vrepl_temp.v:4:8: cannot modify immutable field `len` (type `array`)
.vrepl_temp.v:5:8: cannot modify immutable field `len` (type `array`)
declare the field with `mut:`
struct array {
mut: