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checker: fmt

pull/4847/head
Alexander Medvednikov 2020-05-11 14:38:25 +02:00
parent 8a6820d1b7
commit 828f9af64c
2 changed files with 41 additions and 33 deletions
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10
examples/json.v
View File

@ -9,7 +9,7 @@ mut:
fn main() { fn main() {
s := '[{ "name":"Frodo", "age":25}, {"name":"Bobby", "age":10}]' s := '[{ "name":"Frodo", "age":25}, {"name":"Bobby", "age":10}]'
users := json.decode([]User, s) or { mut users := json.decode([]User, s) or {
eprintln('Failed to parse json') eprintln('Failed to parse json')
return return
} }
@ -20,10 +20,10 @@ fn main() {
for i, user in users { for i, user in users {
println('$i) $user.name') println('$i) $user.name')
if !user.can_register() { if !user.can_register() {
println('Cannot register $user.name, he is too young') println('Cannot register $user.name, they are too young')
} else { } else {
users[i].register() users[i].register()
println('$user.name is registered') println('$user.name is registered')
} }
} }
// Let's encode users again just for fun // Let's encode users again just for fun

64
vlib/v/checker/checker.v
View File

@ -233,7 +233,7 @@ pub fn (mut c Checker) struct_decl(decl ast.StructDecl) {
c.error('unknown type `$sym.name`', field.pos) c.error('unknown type `$sym.name`', field.pos)
} }
if sym.kind == .struct_ { if sym.kind == .struct_ {
info:=sym.info as table.Struct info := sym.info as table.Struct
if info.is_ref_only && !field.typ.is_ptr() { if info.is_ref_only && !field.typ.is_ptr() {
c.error('`$sym.name` type can only be used as a reference: `&$sym.name`', field.pos) c.error('`$sym.name` type can only be used as a reference: `&$sym.name`', field.pos)
} }
@ -255,7 +255,7 @@ pub fn (mut c Checker) struct_decl(decl ast.StructDecl) {
// && (p.tok.lit[0].is_capital() || is_c || (p.builtin_mod && Sp.tok.lit in table.builtin_type_names)) // && (p.tok.lit[0].is_capital() || is_c || (p.builtin_mod && Sp.tok.lit in table.builtin_type_names))
} }
pub fn (mut c Checker) struct_init(struct_init mut ast.StructInit) table.Type { pub fn (mut c Checker) struct_init(mut struct_init ast.StructInit) table.Type {
// typ := c.table.find_type(struct_init.typ.typ.name) or { // typ := c.table.find_type(struct_init.typ.typ.name) or {
// c.error('unknown struct: $struct_init.typ.typ.name', struct_init.pos) // c.error('unknown struct: $struct_init.typ.typ.name', struct_init.pos)
// panic('') // panic('')
@ -344,7 +344,7 @@ pub fn (mut c Checker) struct_init(struct_init mut ast.StructInit) table.Type {
return struct_init.typ return struct_init.typ
} }
pub fn (mut c Checker) infix_expr(infix_expr mut ast.InfixExpr) table.Type { pub fn (mut c Checker) infix_expr(mut infix_expr ast.InfixExpr) table.Type {
// println('checker: infix expr(op $infix_expr.op.str())') // println('checker: infix expr(op $infix_expr.op.str())')
c.expected_type = table.void_type c.expected_type = table.void_type
left_type := c.expr(infix_expr.left) left_type := c.expr(infix_expr.left)
@ -532,7 +532,8 @@ fn (mut c Checker) fail_if_immutable(expr ast.Expr) {
} }
if !field_info.is_mut { if !field_info.is_mut {
type_str := c.table.type_to_str(it.expr_type) type_str := c.table.type_to_str(it.expr_type)
c.error('field `$it.field_name` of struct `${type_str}` is immutable', it.pos) c.error('field `$it.field_name` of struct `${type_str}` is immutable',
it.pos)
} }
c.fail_if_immutable(it.expr) c.fail_if_immutable(it.expr)
} }
@ -555,7 +556,7 @@ fn (mut c Checker) fail_if_immutable(expr ast.Expr) {
} }
} }
fn (mut c Checker) assign_expr(assign_expr mut ast.AssignExpr) { fn (mut c Checker) assign_expr(mut assign_expr ast.AssignExpr) {
c.expected_type = table.void_type c.expected_type = table.void_type
left_type := c.expr(assign_expr.left) left_type := c.expr(assign_expr.left)
c.expected_type = left_type c.expected_type = left_type
@ -617,7 +618,7 @@ fn (mut c Checker) assign_expr(assign_expr mut ast.AssignExpr) {
c.check_expr_opt_call(assign_expr.val, right_type, true) c.check_expr_opt_call(assign_expr.val, right_type, true)
} }
pub fn (mut c Checker) call_expr(call_expr mut ast.CallExpr) table.Type { pub fn (mut c Checker) call_expr(mut call_expr ast.CallExpr) table.Type {
c.stmts(call_expr.or_block.stmts) c.stmts(call_expr.or_block.stmts)
if call_expr.is_method { if call_expr.is_method {
return c.call_method(call_expr) return c.call_method(call_expr)
@ -625,7 +626,7 @@ pub fn (mut c Checker) call_expr(call_expr mut ast.CallExpr) table.Type {
return c.call_fn(call_expr) return c.call_fn(call_expr)
} }
pub fn (mut c Checker) call_method(call_expr mut ast.CallExpr) table.Type { pub fn (mut c Checker) call_method(mut call_expr ast.CallExpr) table.Type {
left_type := c.expr(call_expr.left) left_type := c.expr(call_expr.left)
call_expr.left_type = left_type call_expr.left_type = left_type
left_type_sym := c.table.get_type_symbol(left_type) left_type_sym := c.table.get_type_symbol(left_type)
@ -748,7 +749,7 @@ pub fn (mut c Checker) call_method(call_expr mut ast.CallExpr) table.Type {
return table.void_type return table.void_type
} }
pub fn (mut c Checker) call_fn(call_expr mut ast.CallExpr) table.Type { pub fn (mut c Checker) call_fn(mut call_expr ast.CallExpr) table.Type {
if call_expr.name == 'panic' { if call_expr.name == 'panic' {
c.returns = true c.returns = true
} }
@ -938,7 +939,7 @@ pub fn (mut c Checker) check_expr_opt_call(x ast.Expr, xtype table.Type, is_retu
} }
} }
pub fn (mut c Checker) check_or_block(call_expr mut ast.CallExpr, ret_type table.Type, is_ret_used bool) { pub fn (mut c Checker) check_or_block(mut call_expr ast.CallExpr, ret_type table.Type, is_ret_used bool) {
if !call_expr.or_block.is_used { if !call_expr.or_block.is_used {
c.error('${call_expr.name}() returns an option, but you missed to add an `or {}` block to it', c.error('${call_expr.name}() returns an option, but you missed to add an `or {}` block to it',
call_expr.pos) call_expr.pos)
@ -1005,7 +1006,7 @@ pub fn (mut c Checker) is_last_or_block_stmt_valid(stmt ast.Stmt) bool {
} }
} }
pub fn (mut c Checker) selector_expr(selector_expr mut ast.SelectorExpr) table.Type { pub fn (mut c Checker) selector_expr(mut selector_expr ast.SelectorExpr) table.Type {
typ := c.expr(selector_expr.expr) typ := c.expr(selector_expr.expr)
if typ == table.void_type_idx { if typ == table.void_type_idx {
c.error('unknown selector expression', selector_expr.pos) c.error('unknown selector expression', selector_expr.pos)
@ -1022,9 +1023,9 @@ pub fn (mut c Checker) selector_expr(selector_expr mut ast.SelectorExpr) table.T
} }
} }
if field := c.table.struct_find_field(typ_sym, field_name) { if field := c.table.struct_find_field(typ_sym, field_name) {
if typ_sym.mod != c.mod && !field.is_pub{ if typ_sym.mod != c.mod && !field.is_pub {
c.error('field `${typ_sym.name}.$field_name` is not public', selector_expr.pos) c.error('field `${typ_sym.name}.$field_name` is not public', selector_expr.pos)
} }
return field.typ return field.typ
} }
if typ_sym.kind != .struct_ { if typ_sym.kind != .struct_ {
@ -1036,7 +1037,7 @@ pub fn (mut c Checker) selector_expr(selector_expr mut ast.SelectorExpr) table.T
} }
// TODO: non deferred // TODO: non deferred
pub fn (mut c Checker) return_stmt(return_stmt mut ast.Return) { pub fn (mut c Checker) return_stmt(mut return_stmt ast.Return) {
c.expected_type = c.fn_return_type c.expected_type = c.fn_return_type
if return_stmt.exprs.len > 0 && c.fn_return_type == table.void_type { if return_stmt.exprs.len > 0 && c.fn_return_type == table.void_type {
c.error('too many arguments to return, current function does not return anything', c.error('too many arguments to return, current function does not return anything',
@ -1112,7 +1113,7 @@ pub fn (mut c Checker) enum_decl(decl ast.EnumDecl) {
} }
} }
pub fn (mut c Checker) assign_stmt(assign_stmt mut ast.AssignStmt) { pub fn (mut c Checker) assign_stmt(mut assign_stmt ast.AssignStmt) {
c.expected_type = table.none_type // TODO a hack to make `x := if ... work` c.expected_type = table.none_type // TODO a hack to make `x := if ... work`
right_first := assign_stmt.right[0] right_first := assign_stmt.right[0]
mut right_len := assign_stmt.right.len mut right_len := assign_stmt.right.len
@ -1120,7 +1121,11 @@ pub fn (mut c Checker) assign_stmt(assign_stmt mut ast.AssignStmt) {
right_type0 := c.expr(assign_stmt.right[0]) right_type0 := c.expr(assign_stmt.right[0])
assign_stmt.right_types = [right_type0] assign_stmt.right_types = [right_type0]
right_type_sym0 := c.table.get_type_symbol(right_type0) right_type_sym0 := c.table.get_type_symbol(right_type0)
right_len = if right_type0 == table.void_type { 0 } else { right_len } right_len = if right_type0 == table.void_type {
0
} else {
right_len
}
if right_type_sym0.kind == .multi_return { if right_type_sym0.kind == .multi_return {
assign_stmt.right_types = right_type_sym0.mr_info().types assign_stmt.right_types = right_type_sym0.mr_info().types
right_len = assign_stmt.right_types.len right_len = assign_stmt.right_types.len
@ -1187,7 +1192,7 @@ pub fn (mut c Checker) assign_stmt(assign_stmt mut ast.AssignStmt) {
// c.assigned_var_name = '' // c.assigned_var_name = ''
} }
pub fn (mut c Checker) array_init(array_init mut ast.ArrayInit) table.Type { pub fn (mut c Checker) array_init(mut array_init ast.ArrayInit) table.Type {
// println('checker: array init $array_init.pos.line_nr $c.file.path') // println('checker: array init $array_init.pos.line_nr $c.file.path')
mut elem_type := table.void_type mut elem_type := table.void_type
// []string - was set in parser // []string - was set in parser
@ -1735,7 +1740,7 @@ pub fn (mut c Checker) expr(node ast.Expr) table.Type {
return table.void_type return table.void_type
} }
pub fn (mut c Checker) ident(ident mut ast.Ident) table.Type { pub fn (mut c Checker) ident(mut ident ast.Ident) table.Type {
if ident.name == c.var_decl_name { // c.checked_ident { if ident.name == c.var_decl_name { // c.checked_ident {
c.error('unresolved: `$ident.name`', ident.pos) c.error('unresolved: `$ident.name`', ident.pos)
return table.void_type return table.void_type
@ -1823,7 +1828,8 @@ pub fn (mut c Checker) ident(ident mut ast.Ident) table.Type {
} }
// Non-anon-function object (not a call), e.g. `onclick(my_click)` // Non-anon-function object (not a call), e.g. `onclick(my_click)`
if func := c.table.find_fn(name) { if func := c.table.find_fn(name) {
fn_type := table.new_type(c.table.find_or_register_fn_type(ident.mod, func, false, true)) fn_type := table.new_type(c.table.find_or_register_fn_type(ident.mod, func, false,
true))
ident.name = name ident.name = name
ident.kind = .function ident.kind = .function
ident.info = ast.IdentFn{ ident.info = ast.IdentFn{
@ -1845,7 +1851,7 @@ pub fn (mut c Checker) ident(ident mut ast.Ident) table.Type {
return table.void_type return table.void_type
} }
pub fn (mut c Checker) match_expr(node mut ast.MatchExpr) table.Type { pub fn (mut c Checker) match_expr(mut node ast.MatchExpr) table.Type {
node.is_expr = c.expected_type != table.void_type node.is_expr = c.expected_type != table.void_type
node.expected_type = c.expected_type node.expected_type = c.expected_type
cond_type := c.expr(node.cond) cond_type := c.expr(node.cond)
@ -1900,7 +1906,7 @@ pub fn (mut c Checker) match_expr(node mut ast.MatchExpr) table.Type {
return ret_type return ret_type
} }
fn (mut c Checker) match_exprs(node mut ast.MatchExpr, type_sym table.TypeSymbol) { fn (mut c Checker) match_exprs(mut node ast.MatchExpr, type_sym table.TypeSymbol) {
// branch_exprs is a histogram of how many times // branch_exprs is a histogram of how many times
// an expr was used in the match // an expr was used in the match
mut branch_exprs := map[string]int{} mut branch_exprs := map[string]int{}
@ -1970,7 +1976,7 @@ fn (mut c Checker) match_exprs(node mut ast.MatchExpr, type_sym table.TypeSymbol
c.error(err_details, node.pos) c.error(err_details, node.pos)
} }
pub fn (mut c Checker) if_expr(node mut ast.IfExpr) table.Type { pub fn (mut c Checker) if_expr(mut node ast.IfExpr) table.Type {
if c.expected_type != table.void_type { if c.expected_type != table.void_type {
// | c.assigned_var_name != '' { // | c.assigned_var_name != '' {
// sym := c.table.get_type_symbol(c.expected_type) // sym := c.table.get_type_symbol(c.expected_type)
@ -2024,9 +2030,11 @@ pub fn (mut c Checker) if_expr(node mut ast.IfExpr) table.Type {
} }
} }
// won't yet work due to eg: if true { println('foo') } // won't yet work due to eg: if true { println('foo') }
/*if node.is_expr && !node.has_else { /*
if node.is_expr && !node.has_else {
c.error('`if` expression needs `else` clause. remove return values or add `else`', node.pos) c.error('`if` expression needs `else` clause. remove return values or add `else`', node.pos)
}*/ }
*/
return table.bool_type return table.bool_type
} }
@ -2043,7 +2051,7 @@ pub fn (mut c Checker) postfix_expr(node ast.PostfixExpr) table.Type {
return typ return typ
} }
pub fn (mut c Checker) index_expr(node mut ast.IndexExpr) table.Type { pub fn (mut c Checker) index_expr(mut node ast.IndexExpr) table.Type {
typ := c.expr(node.left) typ := c.expr(node.left)
node.left_type = typ node.left_type = typ
mut is_range := false // TODO is_range := node.index is ast.RangeExpr mut is_range := false // TODO is_range := node.index is ast.RangeExpr
@ -2092,7 +2100,7 @@ pub fn (mut c Checker) index_expr(node mut ast.IndexExpr) table.Type {
// `.green` or `Color.green` // `.green` or `Color.green`
// If a short form is used, `expected_type` needs to be an enum // If a short form is used, `expected_type` needs to be an enum
// with this value. // with this value.
pub fn (mut c Checker) enum_val(node mut ast.EnumVal) table.Type { pub fn (mut c Checker) enum_val(mut node ast.EnumVal) table.Type {
typ_idx := if node.enum_name == '' { typ_idx := if node.enum_name == '' {
c.expected_type.idx() c.expected_type.idx()
} else { // } else { //
@ -2129,7 +2137,7 @@ pub fn (mut c Checker) enum_val(node mut ast.EnumVal) table.Type {
return typ return typ
} }
pub fn (mut c Checker) map_init(node mut ast.MapInit) table.Type { pub fn (mut c Checker) map_init(mut node ast.MapInit) table.Type {
// `x ;= map[string]string` - set in parser // `x ;= map[string]string` - set in parser
if node.typ != 0 { if node.typ != 0 {
info := c.table.get_type_symbol(node.typ).map_info() info := c.table.get_type_symbol(node.typ).map_info()
@ -2142,7 +2150,7 @@ pub fn (mut c Checker) map_init(node mut ast.MapInit) table.Type {
val0_type := c.expr(node.vals[0]) val0_type := c.expr(node.vals[0])
for i, key in node.keys { for i, key in node.keys {
key_i := key as ast.StringLiteral key_i := key as ast.StringLiteral
for j in 0..i { for j in 0 .. i {
key_j := node.keys[j] as ast.StringLiteral key_j := node.keys[j] as ast.StringLiteral
if key_i.val == key_j.val { if key_i.val == key_j.val {
c.error('duplicate key "$key_i.val" in map literal', key.position()) c.error('duplicate key "$key_i.val" in map literal', key.position())