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package server
import "core:fmt"
import "core:log"
import "core:odin/ast"
import "src:common"
get_inlay_hints :: proc(
document: ^Document,
symbols: map[uintptr]SymbolAndNode,
config: ^common.Config,
) -> (
[]InlayHint,
bool,
) {
hints := make([dynamic]InlayHint, context.temp_allocator)
ast_context := make_ast_context(
document.ast,
document.imports,
document.package_name,
document.uri.uri,
document.fullpath,
)
Visit_Data :: struct {
calls: [dynamic]^ast.Node,
}
data := Visit_Data {
calls = make([dynamic]^ast.Node, context.temp_allocator),
}
visit :: proc(visitor: ^ast.Visitor, node: ^ast.Node) -> ^ast.Visitor {
if node == nil || visitor == nil {
return nil
}
data := cast(^Visit_Data)visitor.data
if call, ok := node.derived.(^ast.Call_Expr); ok {
append(&data.calls, node)
}
return visitor
}
visitor := ast.Visitor {
data = &data,
visit = visit,
}
for decl in document.ast.decls {
ast.walk(&visitor, decl)
}
loop: for node_call in &data.calls {
symbol_arg_count := 0
is_selector_call := false
is_ellipsis := false
has_added_default := false
call := node_call.derived.(^ast.Call_Expr)
// TODO: support this (inlay hints in calls that use named args, e.g. `foobar(foo=bar)`
for arg in call.args {
if _, ok := arg.derived.(^ast.Field_Value); ok {
continue loop
}
}
if selector, ok := call.expr.derived.(^ast.Selector_Expr); ok && selector.op.kind == .Arrow_Right {
is_selector_call = true
}
if symbol_and_node, ok := symbols[cast(uintptr)call.expr]; ok {
if symbol_call, ok := symbol_and_node.symbol.value.(SymbolProcedureValue); ok {
for arg, i in symbol_call.arg_types {
if i == 0 && is_selector_call {
continue
}
for name in arg.names {
label := ""
is_current_ellipsis := false
if arg.type != nil {
if ellipsis, ok := arg.type.derived.(^ast.Ellipsis); ok {
is_current_ellipsis = true
}
}
#partial switch v in name.derived {
case ^ast.Ident:
label = v.name
case ^ast.Poly_Type:
if ident, ok := v.type.derived.(^ast.Ident); ok {
label = ident.name
} else {
continue loop
}
case:
continue loop
}
if is_ellipsis || symbol_arg_count >= len(call.args) {
if arg.default_value == nil {
continue loop
}
if !config.enable_inlay_hints_default_params {
continue loop
}
value := common.node_to_string(arg.default_value)
call_range := common.get_token_range(call, string(document.text))
position: common.Position
position = call_range.end
position.character -= 1
needs_leading_comma := i > 0
if !has_added_default && needs_leading_comma {
till_end := string(document.text[:call.close.offset])
#reverse for ch in till_end {
switch ch {
case ' ', '\t', '\n':
continue
case ',':
needs_leading_comma = false
}
break
}
}
hint := InlayHint {
kind = .Parameter,
label = fmt.tprintf("%s %v := %v", needs_leading_comma ? "," : "", label, value),
position = position,
}
append(&hints, hint)
has_added_default = true
} else if config.enable_inlay_hints_params {
// if the arg name and param name are the same, don't add it.
same_name: bool
#partial switch v in call.args[symbol_arg_count].derived_expr {
case ^ast.Ident:
same_name = label == v.name
case ^ast.Poly_Type:
if ident, ok := v.type.derived.(^ast.Ident); ok {
same_name = label == ident.name
}
}
if !same_name {
range := common.get_token_range(call.args[symbol_arg_count], string(document.text))
hint := InlayHint {
kind = .Parameter,
label = fmt.tprintf("%v = ", label),
position = range.start,
}
append(&hints, hint)
}
}
if is_current_ellipsis {
is_ellipsis = true
}
symbol_arg_count += 1
}
}
}
}
}
return hints[:], true
}
|
