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ast, checker, cgen: implement if guard with multi return optional (#13273)

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yuyi
2022-01-25 20:36:33 +08:00
committed by GitHub
parent fe77e64b3e
commit ca1f675dba
13 changed files with 202 additions and 43 deletions
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18
cmd/tools/vast/vast.v
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@ -1613,9 +1613,17 @@ fn (t Tree) par_expr(node ast.ParExpr) &Node {
fn (t Tree) if_guard_expr(node ast.IfGuardExpr) &Node {
mut obj := new_object()
obj.add_terse('ast_type', t.string_node('IfGuardExpr'))
obj.add_terse('var_name', t.string_node(node.var_name))
obj.add_terse('vars', t.array_node_if_guard_var(node.vars))
obj.add_terse('expr', t.expr(node.expr))
obj.add_terse('expr_type', t.type_node(node.expr_type))
return obj
}
fn (t Tree) if_guard_var(node ast.IfGuardVar) &Node {
mut obj := new_object()
obj.add_terse('ast_type', t.string_node('IfGuardVar'))
obj.add_terse('name', t.string_node(node.name))
obj.add_terse('is_mut', t.bool_node(node.is_mut))
obj.add('pos', t.position(node.pos))
return obj
}
@ -2224,6 +2232,14 @@ fn (t Tree) array_node_struct_init_field(nodes []ast.StructInitField) &Node {
return arr
}
fn (t Tree) array_node_if_guard_var(nodes []ast.IfGuardVar) &Node {
mut arr := new_array()
for node in nodes {
arr.add_item(t.if_guard_var(node))
}
return arr
}
fn (t Tree) array_node_struct_init_embed(nodes []ast.StructInitEmbed) &Node {
mut arr := new_array()
for node in nodes {