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parser: fix prefix precedence

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This commit is contained in:
Alexander Medvednikov
2020-04-08 13:53:11 +02:00
parent c00ec77737
commit eb78396307
5 changed files with 39 additions and 34 deletions
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2
vlib/builtin/int_test.v
View File

@@ -29,6 +29,8 @@ fn test_float_equal_operator() {
assert a.gtbit(1)
assert a >= 1
assert a.gebit(1)
assert -1 == 1 * -1
assert -1.0 == 1.0 * -1.0
a = f64(1)
a += 0.000001

42
vlib/v/checker/checker.v
View File

@@ -117,7 +117,7 @@ pub fn (c mut Checker) struct_init(struct_init mut ast.StructInit) table.Type {
}
}
if !found_field {
c.error('struct init: no such field `$field_name` for struct `$typ_sym.name`',
c.error('struct init: no such field `$field_name` for struct `$typ_sym.name`',
struct_init.pos)
continue
}
@@ -127,7 +127,7 @@ pub fn (c mut Checker) struct_init(struct_init mut ast.StructInit) table.Type {
expr_type_sym := c.table.get_type_symbol(expr_type)
field_type_sym := c.table.get_type_symbol(field.typ)
if !c.table.check(expr_type, field.typ) {
c.error('cannot assign `$expr_type_sym.name` as `$field_type_sym.name` for field `$field.name`',
c.error('cannot assign `$expr_type_sym.name` as `$field_type_sym.name` for field `$field.name`',
struct_init.pos)
}
struct_init.expr_types << expr_type
@@ -139,7 +139,7 @@ pub fn (c mut Checker) struct_init(struct_init mut ast.StructInit) table.Type {
continue
}
if table.type_is_ptr(field.typ) {
c.warn('reference field `${typ_sym.name}.${field.name}` must be initialized',
c.warn('reference field `${typ_sym.name}.${field.name}` must be initialized',
struct_init.pos)
}
}
@@ -226,7 +226,7 @@ pub fn (c mut Checker) call_expr(call_expr mut ast.CallExpr) table.Type {
left_type_sym := c.table.get_type_symbol(left_type)
method_name := call_expr.name
// TODO: remove this for actual methods, use only for compiler magic
if left_type_sym.kind == .array && method_name in ['filter', 'clone', 'repeat', 'reverse',
if left_type_sym.kind == .array && method_name in ['filter', 'clone', 'repeat', 'reverse',
'map', 'slice'] {
if method_name in ['filter', 'map'] {
array_info := left_type_sym.info as table.Array
@@ -254,13 +254,13 @@ pub fn (c mut Checker) call_expr(call_expr mut ast.CallExpr) table.Type {
}
if method := c.table.type_find_method(left_type_sym, method_name) {
no_args := method.args.len - 1
min_required_args := method.args.len - if method.is_variadic && method.args.len >
min_required_args := method.args.len - if method.is_variadic && method.args.len >
1 { 2 } else { 1 }
if call_expr.args.len < min_required_args {
c.error('too few arguments in call to `${left_type_sym.name}.$method_name` ($call_expr.args.len instead of $min_required_args)',
c.error('too few arguments in call to `${left_type_sym.name}.$method_name` ($call_expr.args.len instead of $min_required_args)',
call_expr.pos)
} else if !method.is_variadic && call_expr.args.len > no_args {
c.error('too many arguments in call to `${left_type_sym.name}.$method_name` ($call_expr.args.len instead of $no_args)',
c.error('too many arguments in call to `${left_type_sym.name}.$method_name` ($call_expr.args.len instead of $no_args)',
call_expr.pos)
return method.return_type
}
@@ -352,10 +352,10 @@ pub fn (c mut Checker) call_expr(call_expr mut ast.CallExpr) table.Type {
}
min_required_args := if f.is_variadic { f.args.len - 1 } else { f.args.len }
if call_expr.args.len < min_required_args {
c.error('too few arguments in call to `$fn_name` ($call_expr.args.len instead of $min_required_args)',
c.error('too few arguments in call to `$fn_name` ($call_expr.args.len instead of $min_required_args)',
call_expr.pos)
} else if !f.is_variadic && call_expr.args.len > f.args.len {
c.error('too many arguments in call to `$fn_name` ($call_expr.args.len instead of $f.args.len)',
c.error('too many arguments in call to `$fn_name` ($call_expr.args.len instead of $f.args.len)',
call_expr.pos)
return f.return_type
}
@@ -389,7 +389,7 @@ pub fn (c mut Checker) call_expr(call_expr mut ast.CallExpr) table.Type {
if typ_sym.kind == .array_fixed {
}
// println('fixed')
c.error('cannot use type `$typ_sym.str()` as type `$arg_typ_sym.str()` in argument ${i+1} to `$fn_name`',
c.error('cannot use type `$typ_sym.str()` as type `$arg_typ_sym.str()` in argument ${i+1} to `$fn_name`',
call_expr.pos)
}
}
@@ -505,7 +505,7 @@ pub fn (c mut Checker) return_stmt(return_stmt mut ast.Return) {
return
}
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',
return_stmt.pos)
return
}
@@ -536,7 +536,7 @@ pub fn (c mut Checker) return_stmt(return_stmt mut ast.Return) {
if !c.table.check(got_typ, exp_typ) {
got_typ_sym := c.table.get_type_symbol(got_typ)
exp_typ_sym := c.table.get_type_symbol(exp_typ)
c.error('cannot use `$got_typ_sym.name` as type `$exp_typ_sym.name` in return argument',
c.error('cannot use `$got_typ_sym.name` as type `$exp_typ_sym.name` in return argument',
return_stmt.pos)
}
}
@@ -569,7 +569,7 @@ pub fn (c mut Checker) assign_stmt(assign_stmt mut ast.AssignStmt) {
if !c.table.check(val_type, var_type) {
val_type_sym := c.table.get_type_symbol(val_type)
var_type_sym := c.table.get_type_symbol(var_type)
c.error('assign stmt: cannot use `$val_type_sym.name` as `$var_type_sym.name`',
c.error('assign stmt: cannot use `$val_type_sym.name` as `$var_type_sym.name`',
assign_stmt.pos)
}
}
@@ -597,7 +597,7 @@ pub fn (c mut Checker) assign_stmt(assign_stmt mut ast.AssignStmt) {
if !c.table.check(val_type, var_type) {
val_type_sym := c.table.get_type_symbol(val_type)
var_type_sym := c.table.get_type_symbol(var_type)
c.error('assign stmt: cannot use `$val_type_sym.name` as `$var_type_sym.name`',
c.error('assign stmt: cannot use `$val_type_sym.name` as `$var_type_sym.name`',
assign_stmt.pos)
}
}
@@ -848,7 +848,7 @@ pub fn (c mut Checker) expr(node ast.Expr) table.Type {
type_sym := c.table.get_type_symbol(it.typ)
if expr_type_sym.kind == .sum_type {
info := expr_type_sym.info as table.SumType
if !it.typ in info.variants {
if !(it.typ in info.variants) {
c.error('cannot cast `$expr_type_sym.name` to `$type_sym.name`', it.pos)
// c.error('only $info.variants can be casted to `$typ`', it.pos)
}
@@ -1139,7 +1139,7 @@ pub fn (c mut Checker) if_expr(node mut ast.IfExpr) table.Type {
for i, branch in node.branches {
match branch.cond {
ast.ParExpr {
c.error('unnecessary `()` in an if condition. use `if expr {` instead of `if (expr) {`.',
c.error('unnecessary `()` in an if condition. use `if expr {` instead of `if (expr) {`.',
node.pos)
}
else {}
@@ -1214,9 +1214,9 @@ pub fn (c mut Checker) index_expr(node mut ast.IndexExpr) table.Type {
// println('index expr left=$typ_sym.name $node.pos.line_nr')
// if typ_sym.kind == .array && (!(table.type_idx(index_type) in table.number_type_idxs) &&
// index_type_sym.kind != .enum_) {
if typ_sym.kind in [.array, .array_fixed] && !(table.is_number(index_type) || index_type_sym.kind ==
if typ_sym.kind in [.array, .array_fixed] && !(table.is_number(index_type) || index_type_sym.kind ==
.enum_) {
c.error('non-integer index `$index_type_sym.name` (array type `$typ_sym.name`)',
c.error('non-integer index `$index_type_sym.name` (array type `$typ_sym.name`)',
node.pos)
} else if typ_sym.kind == .map && table.type_idx(index_type) != table.string_type_idx {
c.error('non-string map index (map type `$typ_sym.name`)', node.pos)
@@ -1243,7 +1243,7 @@ pub fn (c mut Checker) index_expr(node mut ast.IndexExpr) table.Type {
pub fn (c mut Checker) enum_val(node mut ast.EnumVal) table.Type {
typ_idx := if node.enum_name == '' {
table.type_idx(c.expected_type)
} else { //
} else { //
c.table.find_type_idx(node.enum_name)
}
// println('checker: enum_val: $node.enum_name typeidx=$typ_idx')
@@ -1288,13 +1288,13 @@ pub fn (c mut Checker) map_init(node mut ast.MapInit) table.Type {
if !c.table.check(key_type, key0_type) {
key0_type_sym := c.table.get_type_symbol(key0_type)
key_type_sym := c.table.get_type_symbol(key_type)
c.error('map init: cannot use `$key_type_sym.name` as `$key0_type_sym` for map key',
c.error('map init: cannot use `$key_type_sym.name` as `$key0_type_sym` for map key',
node.pos)
}
if !c.table.check(val_type, val0_type) {
val0_type_sym := c.table.get_type_symbol(val0_type)
val_type_sym := c.table.get_type_symbol(val_type)
c.error('map init: cannot use `$val_type_sym.name` as `$val0_type_sym` for map value',
c.error('map init: cannot use `$val_type_sym.name` as `$val0_type_sym` for map value',
node.pos)
}
}

25
vlib/v/gen/cgen.v
View File

@@ -86,7 +86,7 @@ pub fn cgen(files []ast.File, table &table.Table, pref &pref.Preferences) string
indent: -1
}
g.init()
//
//
mut autofree_used := false
for file in files {
g.file = file
@@ -115,7 +115,7 @@ pub fn cgen(files []ast.File, table &table.Table, pref &pref.Preferences) string
if g.is_test {
g.write_tests_main()
}
//
//
g.finish()
return g.hashes() + g.includes.str() + g.typedefs.str() + g.typedefs2.str() + g.definitions.str() +
g.gowrappers.str() + g.stringliterals.str() + g.out.str()
@@ -141,7 +141,7 @@ pub fn (g mut Gen) init() {
g.write_sorted_types()
g.write_multi_return_types()
g.definitions.writeln('// end of definitions #endif')
//
//
g.stringliterals.writeln('')
g.stringliterals.writeln('// >> string literal consts')
g.stringliterals.writeln('void vinit_string_literals(){')
@@ -205,7 +205,7 @@ pub fn (g mut Gen) typ(t table.Type) string {
return styp
}
//
//
pub fn (g mut Gen) write_typedef_types() {
for typ in g.table.types {
match typ.kind {
@@ -821,7 +821,7 @@ fn (g mut Gen) gen_fn_decl(it ast.FnDecl) {
}
}
*/
//
//
g.fn_args(it.args, it.is_variadic)
if it.no_body {
// Just a function header.
@@ -840,9 +840,9 @@ fn (g mut Gen) gen_fn_decl(it ast.FnDecl) {
g.writeln('free(_const_os__args.data); // empty, inited in _vinit()')
}
if g.pref.os == .windows {
g.writeln('_const_os__args = os__init_os_args_wide(___argc, ___argv);')
g.writeln('\t_const_os__args = os__init_os_args_wide(___argc, ___argv);')
} else {
g.writeln('_const_os__args = os__init_os_args(___argc, (byteptr*)___argv);')
g.writeln('\t_const_os__args = os__init_os_args(___argc, (byteptr*)___argv);')
}
}
}
@@ -1123,7 +1123,9 @@ fn (g mut Gen) expr(node ast.Expr) {
}
// g.write('/*pref*/')
g.write(it.op.str())
//g.write('(')
g.expr(it.right)
//g.write(')')
g.is_amp = false
}
ast.SizeOf {
@@ -1390,7 +1392,8 @@ fn (g mut Gen) infix_expr(node ast.InfixExpr) {
g.expr(node.right)
g.write('), $tmp, $elem_type_str)')
}
} else if (node.left_type == node.right_type ) && node.left_type in [ table.f32_type_idx, table.f64_type_idx ] && node.op in [ .eq, .ne ] {
} else if (node.left_type == node.right_type) && node.left_type in [table.f32_type_idx,
table.f64_type_idx] && node.op in [.eq, .ne] {
// floats should be compared with epsilon
if node.left_type == table.f64_type_idx {
if node.op == .eq {
@@ -1398,7 +1401,7 @@ fn (g mut Gen) infix_expr(node ast.InfixExpr) {
} else {
g.write('f64_ne(')
}
}else{
} else {
if node.op == .eq {
g.write('f32_eq(')
} else {
@@ -1475,7 +1478,7 @@ fn (g mut Gen) match_expr(node ast.MatchExpr) {
// sum_type_str
} else if type_sym.kind == .string {
g.write('string_eq(')
//
//
g.expr(node.cond)
g.write(', ')
// g.write('string_eq($tmp, ')
@@ -2159,7 +2162,7 @@ fn (g mut Gen) write_types(types []table.TypeSymbol) {
g.definitions.writeln('EMPTY_STRUCT_DECLARATION;')
}
// g.definitions.writeln('} $name;\n')
//
//
g.definitions.writeln('};\n')
}
table.Alias {

2
vlib/v/parser/parser.v
View File

@@ -863,7 +863,7 @@ fn (p mut Parser) prefix_expr() ast.PrefixExpr {
p.is_amp = true
}
p.next()
right := p.expr(1)
right := p.expr(token.Precedence.prefix)
p.is_amp = false
return ast.PrefixExpr{
op: op

2
vlib/v/token/token.v
View File

@@ -303,7 +303,7 @@ pub enum Precedence {
product // * or /
// mod // %
prefix // -X or !X
postfix
postfix // ++ or --
call // func(X) or foo.method(X)
index // array[index], map[key]
}