mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
v2: remove expr types & some dead code from parser
This commit is contained in:
Joe Conigliaro
parent
bcaf72eccb
commit
4d55a4c097
|
|
@ -293,7 +293,7 @@ pub fn (p mut Parser) stmt() ast.Stmt {
|
|||
match p.tok.kind {
|
||||
.key_assert {
|
||||
p.next()
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
return ast.AssertStmt{
|
||||
expr: expr
|
||||
}
|
||||
|
|
@ -354,12 +354,9 @@ pub fn (p mut Parser) stmt() ast.Stmt {
|
|||
name: name
|
||||
}
|
||||
}
|
||||
// expr,typ := p.expr(0)
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
return ast.ExprStmt{
|
||||
expr: expr
|
||||
// typ: typ
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -369,7 +366,7 @@ pub fn (p mut Parser) stmt() ast.Stmt {
|
|||
pub fn (p mut Parser) assign_expr(left ast.Expr) ast.AssignExpr {
|
||||
op := p.tok.kind
|
||||
p.next()
|
||||
val,_ := p.expr(0)
|
||||
val := p.expr(0)
|
||||
node := ast.AssignExpr{
|
||||
left: left
|
||||
val: val
|
||||
|
|
@ -392,7 +389,6 @@ fn (p mut Parser) attr() ast.Attr {
|
|||
}
|
||||
|
||||
/*
|
||||
|
||||
fn (p mut Parser) range_expr(low ast.Expr) ast.Expr {
|
||||
// ,table.Type) {
|
||||
if p.tok.kind != .dotdot {
|
||||
|
|
@ -401,7 +397,7 @@ fn (p mut Parser) range_expr(low ast.Expr) ast.Expr {
|
|||
p.check(.dotdot)
|
||||
mut high := ast.Expr{}
|
||||
if p.tok.kind != .rsbr {
|
||||
high,_ = p.expr(0)
|
||||
high = p.expr(0)
|
||||
// if typ.typ.kind != .int {
|
||||
// p.error('non-integer index `$typ.typ.name`')
|
||||
// }
|
||||
|
|
@ -414,34 +410,6 @@ fn (p mut Parser) range_expr(low ast.Expr) ast.Expr {
|
|||
}
|
||||
*/
|
||||
|
||||
/*
|
||||
pub fn (p mut Parser) assign_stmt() ast.AssignStmt {
|
||||
name := p.tok.lit
|
||||
// println('looking for $name')
|
||||
var := p.table.find_var(name) or {
|
||||
p.error('assign unknown variable `$name`')
|
||||
exit(1)
|
||||
}
|
||||
if !var.is_mut {
|
||||
p.error('`$var.name` is immutable, declare it with `mut $var.name := ...`')
|
||||
}
|
||||
left_expr,left_type := p.expr(0)
|
||||
op := p.tok.kind
|
||||
// println('assignn_stmt() ' + op.str())
|
||||
p.next()
|
||||
right_expr,right_type := p.expr(0)
|
||||
if !p.table.check(left_type, right_type) {
|
||||
p.error('oops')
|
||||
}
|
||||
return ast.AssignStmt{
|
||||
left: left_expr
|
||||
right: right_expr
|
||||
op: op
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
pub fn (p &Parser) error(s string) {
|
||||
print_backtrace()
|
||||
mut path := p.file_name
|
||||
|
|
@ -533,7 +501,7 @@ fn (p mut Parser) struct_init() ast.StructInit {
|
|||
for p.tok.kind != .rcbr {
|
||||
mut field_name := ''
|
||||
if is_short_syntax {
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
exprs << expr
|
||||
}
|
||||
else {
|
||||
|
|
@ -556,7 +524,7 @@ fn (p mut Parser) struct_init() ast.StructInit {
|
|||
}
|
||||
if !is_short_syntax {
|
||||
p.check(.colon)
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
exprs << expr
|
||||
}
|
||||
i++
|
||||
|
|
@ -615,7 +583,7 @@ pub fn (p mut Parser) name_expr() ast.Expr {
|
|||
to_typ := p.parse_type()
|
||||
p.check(.lpar)
|
||||
mut expr := ast.Expr{}
|
||||
expr,_ = p.expr(0)
|
||||
expr = p.expr(0)
|
||||
// TODO, string(b, len)
|
||||
if p.tok.kind == .comma && table.type_idx(to_typ) == table.string_type_idx {
|
||||
p.check(.comma)
|
||||
|
|
@ -676,7 +644,7 @@ pub fn (p mut Parser) name_expr() ast.Expr {
|
|||
return node
|
||||
}
|
||||
|
||||
pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
||||
pub fn (p mut Parser) expr(precedence int) ast.Expr {
|
||||
// println('\n\nparser.expr()')
|
||||
mut typ := table.void_type
|
||||
mut node := ast.Expr{}
|
||||
|
|
@ -686,7 +654,7 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
node = p.name_expr()
|
||||
}
|
||||
.str {
|
||||
node,typ = p.string_expr()
|
||||
node = p.string_expr()
|
||||
}
|
||||
.dot {
|
||||
// .enum_val
|
||||
|
|
@ -719,11 +687,11 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
node = p.match_expr()
|
||||
}
|
||||
.number {
|
||||
node,typ = p.parse_number_literal()
|
||||
node = p.parse_number_literal()
|
||||
}
|
||||
.lpar {
|
||||
p.check(.lpar)
|
||||
node,typ = p.expr(0)
|
||||
node = p.expr(0)
|
||||
p.check(.rpar)
|
||||
node = ast.ParExpr{
|
||||
expr: node
|
||||
|
|
@ -765,10 +733,10 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
mut vals := []ast.Expr
|
||||
for p.tok.kind != .rcbr && p.tok.kind != .eof {
|
||||
// p.check(.str)
|
||||
key,_ := p.expr(0)
|
||||
key := p.expr(0)
|
||||
keys << key
|
||||
p.check(.colon)
|
||||
val,_ := p.expr(0)
|
||||
val := p.expr(0)
|
||||
vals << val
|
||||
if p.tok.kind == .comma {
|
||||
p.next()
|
||||
|
|
@ -788,7 +756,7 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
for {
|
||||
fields << p.check_name()
|
||||
p.check(.colon)
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
vals << expr
|
||||
if p.tok.kind == .comma {
|
||||
p.check(.comma)
|
||||
|
|
@ -834,7 +802,7 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
else if p.tok.kind == .left_shift {
|
||||
tok := p.tok
|
||||
p.next()
|
||||
right,_ := p.expr(precedence - 1)
|
||||
right := p.expr(precedence - 1)
|
||||
node = ast.InfixExpr{
|
||||
left: node
|
||||
right: right
|
||||
|
|
@ -843,7 +811,7 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
}
|
||||
}
|
||||
else if p.tok.kind.is_infix() {
|
||||
node,typ = p.infix_expr(node)
|
||||
node = p.infix_expr(node)
|
||||
}
|
||||
// Postfix
|
||||
else if p.tok.kind in [.inc, .dec] {
|
||||
|
|
@ -853,19 +821,19 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
|
|||
pos: p.tok.position()
|
||||
}
|
||||
p.next()
|
||||
return node,typ
|
||||
return node
|
||||
}
|
||||
else {
|
||||
return node,typ
|
||||
return node
|
||||
}
|
||||
}
|
||||
return node,typ
|
||||
return node
|
||||
}
|
||||
|
||||
fn (p mut Parser) prefix_expr() ast.PrefixExpr {
|
||||
op := p.tok.kind
|
||||
p.next()
|
||||
right,_ := p.expr(1)
|
||||
right := p.expr(1)
|
||||
return ast.PrefixExpr{
|
||||
op: op
|
||||
right: right
|
||||
|
|
@ -878,7 +846,7 @@ fn (p mut Parser) index_expr(left ast.Expr) ast.IndexExpr {
|
|||
if p.tok.kind == .dotdot {
|
||||
// [..end]
|
||||
p.next()
|
||||
high,_ := p.expr(0)
|
||||
high := p.expr(0)
|
||||
p.check(.rsbr)
|
||||
return ast.IndexExpr{
|
||||
left: left
|
||||
|
|
@ -889,13 +857,13 @@ fn (p mut Parser) index_expr(left ast.Expr) ast.IndexExpr {
|
|||
}
|
||||
}
|
||||
}
|
||||
expr,_ := p.expr(0) // `[expr]` or `[expr..]`
|
||||
expr := p.expr(0) // `[expr]` or `[expr..]`
|
||||
if p.tok.kind == .dotdot {
|
||||
// [start..end] or [start..]
|
||||
p.check(.dotdot)
|
||||
mut high := ast.Expr{}
|
||||
if p.tok.kind != .rsbr {
|
||||
high,_ = p.expr(0)
|
||||
high = p.expr(0)
|
||||
}
|
||||
p.check(.rsbr)
|
||||
return ast.IndexExpr{
|
||||
|
|
@ -975,28 +943,24 @@ fn (p mut Parser) dot_expr(left ast.Expr, left_type table.Type) ast.Expr {
|
|||
return node
|
||||
}
|
||||
|
||||
fn (p mut Parser) infix_expr(left ast.Expr) (ast.Expr,table.Type) {
|
||||
fn (p mut Parser) infix_expr(left ast.Expr) ast.Expr {
|
||||
op := p.tok.kind
|
||||
// mut typ := p.
|
||||
// println('infix op=$op.str()')
|
||||
precedence := p.tok.precedence()
|
||||
pos := p.tok.position()
|
||||
p.next()
|
||||
mut typ := table.Type{}
|
||||
mut right := ast.Expr{}
|
||||
right,typ = p.expr(precedence)
|
||||
if op.is_relational() {
|
||||
typ = table.bool_type
|
||||
}
|
||||
right = p.expr(precedence)
|
||||
mut expr := ast.Expr{}
|
||||
expr = ast.InfixExpr{
|
||||
left: left
|
||||
right: right
|
||||
right_type: typ
|
||||
// right_type: typ
|
||||
op: op
|
||||
pos: pos
|
||||
}
|
||||
return expr,typ
|
||||
return expr
|
||||
}
|
||||
|
||||
// Implementation of Pratt Precedence
|
||||
|
|
@ -1071,12 +1035,12 @@ fn (p mut Parser) for_statement() ast.Stmt {
|
|||
p.check(.semicolon)
|
||||
if p.tok.kind != .semicolon {
|
||||
mut typ := table.void_type
|
||||
cond,typ = p.expr(0)
|
||||
cond = p.expr(0)
|
||||
}
|
||||
p.check(.semicolon)
|
||||
if p.tok.kind != .lcbr {
|
||||
//inc = p.stmt()
|
||||
inc,_ = p.expr(0)
|
||||
inc = p.expr(0)
|
||||
}
|
||||
stmts := p.parse_block()
|
||||
p.close_scope()
|
||||
|
|
@ -1104,29 +1068,8 @@ fn (p mut Parser) for_statement() ast.Stmt {
|
|||
})
|
||||
}
|
||||
p.check(.key_in)
|
||||
mut elem_type := table.void_type
|
||||
// arr_expr
|
||||
cond,arr_typ := p.expr(0)
|
||||
// array / map
|
||||
if table.type_idx(arr_typ) == table.string_type_idx {
|
||||
elem_type = table.byte_type
|
||||
}
|
||||
else {
|
||||
arr_typ_sym := p.table.get_type_symbol(arr_typ)
|
||||
match arr_typ_sym.info {
|
||||
table.Array {
|
||||
elem_type = it.elem_type
|
||||
}
|
||||
table.Map {
|
||||
elem_type = it.value_type
|
||||
}
|
||||
else {}
|
||||
// println(1)
|
||||
// elem_type_sym := p.table.get_type_symbol(elem_type)
|
||||
// p.error('cannot loop over type: $elem_type_sym.name')
|
||||
// }
|
||||
}
|
||||
}
|
||||
cond := p.expr(0)
|
||||
// 0 .. 10
|
||||
// start := p.tok.lit.int()
|
||||
// TODO use RangeExpr
|
||||
|
|
@ -1135,15 +1078,11 @@ fn (p mut Parser) for_statement() ast.Stmt {
|
|||
if p.tok.kind == .dotdot {
|
||||
is_range = true
|
||||
p.check(.dotdot)
|
||||
high_expr,_ = p.expr(0)
|
||||
high_expr = p.expr(0)
|
||||
}
|
||||
// p.table.register_var(table.Var{
|
||||
// name: var_name
|
||||
// typ: elem_type
|
||||
// })
|
||||
p.scope.register_var(ast.VarDecl{
|
||||
name: var_name
|
||||
typ: elem_type
|
||||
expr: cond
|
||||
})
|
||||
stmts := p.parse_block()
|
||||
// println('nr stmts=$stmts.len')
|
||||
|
|
@ -1159,7 +1098,7 @@ fn (p mut Parser) for_statement() ast.Stmt {
|
|||
}
|
||||
}
|
||||
// `for cond {`
|
||||
cond,_ := p.expr(0)
|
||||
cond := p.expr(0)
|
||||
stmts := p.parse_block()
|
||||
p.close_scope()
|
||||
return ast.ForStmt{
|
||||
|
|
@ -1184,7 +1123,7 @@ fn (p mut Parser) if_expr() ast.Expr {
|
|||
p.open_scope()
|
||||
var_name := p.check_name()
|
||||
p.check(.decl_assign)
|
||||
expr,typ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
p.scope.register_var(ast.VarDecl{
|
||||
name: var_name
|
||||
expr: expr
|
||||
|
|
@ -1195,7 +1134,7 @@ fn (p mut Parser) if_expr() ast.Expr {
|
|||
}
|
||||
}
|
||||
else {
|
||||
cond,_ = p.expr(0)
|
||||
cond = p.expr(0)
|
||||
}
|
||||
p.inside_if = false
|
||||
mut has_else := false
|
||||
|
|
@ -1247,14 +1186,14 @@ fn (p mut Parser) if_expr() ast.Expr {
|
|||
return node
|
||||
}
|
||||
|
||||
fn (p mut Parser) string_expr() (ast.Expr,table.Type) {
|
||||
fn (p mut Parser) string_expr() ast.Expr {
|
||||
mut node := ast.Expr{}
|
||||
node = ast.StringLiteral{
|
||||
val: p.tok.lit
|
||||
}
|
||||
if p.peek_tok.kind != .str_dollar {
|
||||
p.next()
|
||||
return node,table.string_type
|
||||
return node
|
||||
}
|
||||
// Handle $ interpolation
|
||||
for p.tok.kind == .str {
|
||||
|
|
@ -1279,7 +1218,7 @@ fn (p mut Parser) string_expr() (ast.Expr,table.Type) {
|
|||
}
|
||||
}
|
||||
}
|
||||
return node,table.string_type
|
||||
return node
|
||||
}
|
||||
|
||||
fn (p mut Parser) array_init() ast.ArrayInit {
|
||||
|
|
@ -1304,7 +1243,7 @@ fn (p mut Parser) array_init() ast.ArrayInit {
|
|||
else {
|
||||
// [1,2,3]
|
||||
for i := 0; p.tok.kind != .rsbr; i++ {
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
exprs << expr
|
||||
if p.tok.kind == .comma {
|
||||
p.check(.comma)
|
||||
|
|
@ -1333,16 +1272,14 @@ fn (p mut Parser) array_init() ast.ArrayInit {
|
|||
}
|
||||
}
|
||||
|
||||
fn (p mut Parser) parse_number_literal() (ast.Expr,table.Type) {
|
||||
fn (p mut Parser) parse_number_literal() ast.Expr {
|
||||
lit := p.tok.lit
|
||||
mut node := ast.Expr{}
|
||||
mut typ := table.int_type
|
||||
if lit.contains('.') {
|
||||
node = ast.FloatLiteral{
|
||||
// val: lit.f64()
|
||||
val: lit
|
||||
}
|
||||
typ = table.f64_type
|
||||
}
|
||||
else {
|
||||
node = ast.IntegerLiteral{
|
||||
|
|
@ -1350,7 +1287,7 @@ fn (p mut Parser) parse_number_literal() (ast.Expr,table.Type) {
|
|||
}
|
||||
}
|
||||
p.next()
|
||||
return node,typ
|
||||
return node
|
||||
}
|
||||
|
||||
fn (p mut Parser) module_decl() ast.Module {
|
||||
|
|
@ -1414,16 +1351,16 @@ fn (p mut Parser) const_decl() ast.ConstDecl {
|
|||
name := p.prepend_mod(p.check_name())
|
||||
// println('!!const: $name')
|
||||
p.check(.assign)
|
||||
expr,typ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
fields << ast.Field{
|
||||
name: name
|
||||
typ: typ
|
||||
// typ: typ
|
||||
}
|
||||
exprs << expr
|
||||
p.table.register_const(table.Var{
|
||||
name: name
|
||||
typ: typ
|
||||
})
|
||||
// p.table.register_const(table.Var{
|
||||
// name: name
|
||||
// // typ: typ
|
||||
// })
|
||||
}
|
||||
p.check(.rpar)
|
||||
return ast.ConstDecl{
|
||||
|
|
@ -1543,7 +1480,7 @@ fn (p mut Parser) return_stmt() ast.Return {
|
|||
}
|
||||
for {
|
||||
// expr,ti := p.expr(0)
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
exprs << expr
|
||||
// got_tis << ti
|
||||
if p.tok.kind == .comma {
|
||||
|
|
@ -1593,7 +1530,7 @@ fn (p mut Parser) parse_assign_lhs() []ast.Ident {
|
|||
fn (p mut Parser) parse_assign_rhs() []ast.Expr {
|
||||
mut exprs := []ast.Expr
|
||||
for {
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
exprs << expr
|
||||
if p.tok.kind == .comma {
|
||||
p.check(.comma)
|
||||
|
|
@ -1711,7 +1648,7 @@ fn (p mut Parser) match_expr() ast.MatchExpr {
|
|||
if is_mut {
|
||||
p.next()
|
||||
}
|
||||
cond,_ := p.expr(0)
|
||||
cond := p.expr(0)
|
||||
p.check(.lcbr)
|
||||
mut branches := []ast.MatchBranch
|
||||
for {
|
||||
|
|
@ -1737,7 +1674,7 @@ fn (p mut Parser) match_expr() ast.MatchExpr {
|
|||
else {
|
||||
// Expression match
|
||||
for {
|
||||
expr,_ := p.expr(0)
|
||||
expr := p.expr(0)
|
||||
exprs << expr
|
||||
if p.tok.kind != .comma {
|
||||
break
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user