c62b8a5d4f
This adds support for the class definition statement and the include statement which produces the output from the corresponding class. The classes in this language support optional input parameters. In contrast with other tools, the class is *not* a singleton, although it can be used as one. Using include with equivalent input parameters will cause the class to act as a singleton, although it can also be used to produce distinct output. The output produced by including a class is actually a list of statements (a prog) which is ultimately a list of resources and edges. This is different from functions which produces values.
845 lines
19 KiB
Go
845 lines
19 KiB
Go
// Mgmt
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// Copyright (C) 2013-2018+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// +build !root
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package lang
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import (
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"fmt"
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"strings"
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"testing"
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"github.com/purpleidea/mgmt/engine"
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"github.com/purpleidea/mgmt/engine/resources"
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_ "github.com/purpleidea/mgmt/lang/funcs/facts/core" // load facts
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"github.com/purpleidea/mgmt/pgraph"
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multierr "github.com/hashicorp/go-multierror"
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errwrap "github.com/pkg/errors"
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)
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// TODO: unify with the other function like this...
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// TODO: where should we put our test helpers?
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func runGraphCmp(t *testing.T, g1, g2 *pgraph.Graph) {
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err := g1.GraphCmp(g2, vertexCmpFn, edgeCmpFn)
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if err != nil {
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t.Logf(" actual (g1): %v%s", g1, fullPrint(g1))
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t.Logf("expected (g2): %v%s", g2, fullPrint(g2))
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t.Errorf("Cmp error:\n%v", err)
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}
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}
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// TODO: unify with the other function like this...
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func fullPrint(g *pgraph.Graph) (str string) {
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if g == nil {
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return "<nil>"
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}
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str += "\n"
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for v := range g.Adjacency() {
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str += fmt.Sprintf("* v: %s\n", v)
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}
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for v1 := range g.Adjacency() {
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for v2, e := range g.Adjacency()[v1] {
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str += fmt.Sprintf("* e: %s -> %s # %s\n", v1, v2, e)
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}
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}
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return
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}
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func vertexCmpFn(v1, v2 pgraph.Vertex) (bool, error) {
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if v1.String() == "" || v2.String() == "" {
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return false, fmt.Errorf("oops, empty vertex")
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}
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r1, r2 := v1.(engine.Res), v2.(engine.Res)
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if err := r1.Cmp(r2); err != nil {
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//fmt.Printf("r1: %+v\n", *(r1.(*resources.TestRes).Int64Ptr))
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//fmt.Printf("r2: %+v\n", *(r2.(*resources.TestRes).Int64Ptr))
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return false, nil
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}
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return v1.String() == v2.String(), nil
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}
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func edgeCmpFn(e1, e2 pgraph.Edge) (bool, error) {
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if e1.String() == "" || e2.String() == "" {
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return false, fmt.Errorf("oops, empty edge")
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}
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return e1.String() == e2.String(), nil
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}
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func runInterpret(t *testing.T, code string) (*pgraph.Graph, error) {
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str := strings.NewReader(code)
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logf := func(format string, v ...interface{}) {
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t.Logf("test: lang: "+format, v...)
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}
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lang := &Lang{
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Input: str, // string as an interface that satisfies io.Reader
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Debug: true,
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Logf: logf,
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}
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if err := lang.Init(); err != nil {
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return nil, errwrap.Wrapf(err, "init failed")
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}
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closeFn := func() error {
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return errwrap.Wrapf(lang.Close(), "close failed")
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}
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// we only wait for the first event, instead of the continuous stream
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select {
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case err, ok := <-lang.Stream():
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if !ok {
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return nil, errwrap.Wrapf(closeFn(), "stream closed without event")
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}
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if err != nil {
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return nil, errwrap.Wrapf(err, "stream failed, close: %+v", closeFn())
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}
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}
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// run artificially without the entire GAPI loop
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graph, err := lang.Interpret()
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if err != nil {
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err := errwrap.Wrapf(err, "interpret failed")
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if e := closeFn(); e != nil {
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err = multierr.Append(err, e) // list of errors
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}
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return nil, err
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}
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return graph, closeFn()
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}
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func TestInterpret0(t *testing.T) {
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code := ``
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graph, err := runInterpret(t, code)
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if err != nil {
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t.Errorf("runInterpret failed: %+v", err)
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return
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}
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expected := &pgraph.Graph{}
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runGraphCmp(t, graph, expected)
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}
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func TestInterpret1(t *testing.T) {
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code := `noop "n1" {}`
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graph, err := runInterpret(t, code)
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if err != nil {
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t.Errorf("runInterpret failed: %+v", err)
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return
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}
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n1, _ := engine.NewNamedResource("noop", "n1")
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expected := &pgraph.Graph{}
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expected.AddVertex(n1)
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runGraphCmp(t, graph, expected)
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}
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func TestInterpret2(t *testing.T) {
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code := `
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noop "n1" {}
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noop "n2" {}
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`
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graph, err := runInterpret(t, code)
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if err != nil {
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t.Errorf("runInterpret failed: %+v", err)
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return
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}
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n1, _ := engine.NewNamedResource("noop", "n1")
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n2, _ := engine.NewNamedResource("noop", "n2")
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expected := &pgraph.Graph{}
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expected.AddVertex(n1)
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expected.AddVertex(n2)
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runGraphCmp(t, graph, expected)
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}
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func TestInterpret3(t *testing.T) {
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// should overflow int8
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code := `
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test "t1" {
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int8 => 88888888,
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}
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`
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_, err := runInterpret(t, code)
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if err == nil {
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t.Errorf("expected overflow failure, but it passed")
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}
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}
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func TestInterpret4(t *testing.T) {
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// str => " !#$%&'()*+,-./0123456790:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_abcdefghijklmnopqrstuvwxyz{|}~",
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code := `
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# comment 1
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test "t1" { # comment 2
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stringptr => " !\"#$%&'()*+,-./0123456790:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_abcdefghijklmnopqrstuvwxyz{|}~",
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int64 => 42,
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boolptr => true,
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# comment 3
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stringptr => "the actual field name is: StringPtr", # comment 4
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int8ptr => 99, # comment 5
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comment => "☺\thello\u263a\nwo\"rld\\2\u263a", # must escape these
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}
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`
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graph, err := runInterpret(t, code)
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if err != nil {
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t.Errorf("runInterpret failed: %+v", err)
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return
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}
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t1, _ := engine.NewNamedResource("test", "t1")
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x := t1.(*resources.TestRes)
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str := " !\"#$%&'()*+,-./0123456790:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_abcdefghijklmnopqrstuvwxyz{|}~"
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x.StringPtr = &str
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x.Int64 = 42
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b := true
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x.BoolPtr = &b
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stringptr := "the actual field name is: StringPtr"
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x.StringPtr = &stringptr
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int8ptr := int8(99)
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x.Int8Ptr = &int8ptr
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x.Comment = "☺\thello☺\nwo\"rld\\2\u263a" // must escape the escaped chars
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expected := &pgraph.Graph{}
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expected.AddVertex(x)
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runGraphCmp(t, graph, expected)
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}
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func TestInterpret5(t *testing.T) {
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code := `
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if true {
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test "t1" {
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int64 => 42,
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stringptr => "hello!",
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}
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}
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`
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graph, err := runInterpret(t, code)
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if err != nil {
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t.Errorf("runInterpret failed: %+v", err)
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return
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}
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t1, _ := engine.NewNamedResource("test", "t1")
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x := t1.(*resources.TestRes)
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x.Int64 = 42
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str := "hello!"
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x.StringPtr = &str
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expected := &pgraph.Graph{}
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expected.AddVertex(x)
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runGraphCmp(t, graph, expected)
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}
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func TestInterpret6(t *testing.T) {
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code := `
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$b = true
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if $b {
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test "t1" {
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int64 => 42,
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stringptr => "hello",
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}
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}
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if $b {
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test "t2" {
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int64 => 13,
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stringptr => "world",
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}
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}
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`
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graph, err := runInterpret(t, code)
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if err != nil {
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t.Errorf("runInterpret failed: %+v", err)
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return
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}
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expected := &pgraph.Graph{}
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{
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r, _ := engine.NewNamedResource("test", "t1")
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x := r.(*resources.TestRes)
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x.Int64 = 42
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str := "hello"
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x.StringPtr = &str
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expected.AddVertex(x)
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}
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{
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r, _ := engine.NewNamedResource("test", "t2")
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x := r.(*resources.TestRes)
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x.Int64 = 13
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str := "world"
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x.StringPtr = &str
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expected.AddVertex(x)
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}
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runGraphCmp(t, graph, expected)
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}
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func TestInterpretMany(t *testing.T) {
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type test struct { // an individual test
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name string
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code string
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fail bool
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graph *pgraph.Graph
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}
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values := []test{}
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{
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graph, _ := pgraph.NewGraph("g")
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values = append(values, test{ // 0
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"nil",
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``,
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false,
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graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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values = append(values, test{ // 1
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name: "empty",
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code: ``,
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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r, _ := engine.NewNamedResource("test", "t")
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x := r.(*resources.TestRes)
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i := int64(42 + 13)
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x.Int64Ptr = &i
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graph.AddVertex(x)
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values = append(values, test{
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name: "simple addition",
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code: `
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test "t" {
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int64ptr => 42 + 13,
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}
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`,
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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r, _ := engine.NewNamedResource("test", "t")
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x := r.(*resources.TestRes)
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i := int64(42 + 13 + 99)
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x.Int64Ptr = &i
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graph.AddVertex(x)
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values = append(values, test{
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name: "triple addition",
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code: `
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test "t" {
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int64ptr => 42 + 13 + 99,
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}
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`,
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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r, _ := engine.NewNamedResource("test", "t")
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x := r.(*resources.TestRes)
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i := int64(42 + 13 - 99)
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x.Int64Ptr = &i
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graph.AddVertex(x)
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values = append(values, test{
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name: "triple addition/subtraction",
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code: `
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test "t" {
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int64ptr => 42 + 13 - 99,
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}
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`,
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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r1, _ := engine.NewNamedResource("test", "t1")
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x1 := r1.(*resources.TestRes)
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s1 := "hello"
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x1.StringPtr = &s1
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graph.AddVertex(x1)
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values = append(values, test{
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name: "single include",
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code: `
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class c1($a, $b) {
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test $a {
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stringptr => $b,
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}
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}
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include c1("t1", "hello")
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`,
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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r1, _ := engine.NewNamedResource("test", "t1")
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r2, _ := engine.NewNamedResource("test", "t2")
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x1 := r1.(*resources.TestRes)
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x2 := r2.(*resources.TestRes)
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s1, s2 := "hello", "world"
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x1.StringPtr = &s1
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x2.StringPtr = &s2
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graph.AddVertex(x1, x2)
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values = append(values, test{
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name: "double include",
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code: `
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class c1($a, $b) {
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test $a {
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stringptr => $b,
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}
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}
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include c1("t1", "hello")
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include c1("t2", "world")
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`,
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fail: false,
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graph: graph,
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})
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}
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{
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//graph, _ := pgraph.NewGraph("g")
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//r1, _ := engine.NewNamedResource("test", "t1")
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//r2, _ := engine.NewNamedResource("test", "t2")
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//x1 := r1.(*resources.TestRes)
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//x2 := r2.(*resources.TestRes)
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//s1, i2 := "hello", int64(42)
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//x1.StringPtr = &s1
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//x2.Int64Ptr = &i2
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//graph.AddVertex(x1, x2)
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values = append(values, test{
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name: "double include different types error",
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code: `
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class c1($a, $b) {
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if $a == "t1" {
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test $a {
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stringptr => $b,
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}
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} else {
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test $a {
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int64ptr => $b,
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}
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}
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}
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include c1("t1", "hello")
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include c1("t2", 42)
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`,
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fail: true, // should not be able to type check this!
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//graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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r1, _ := engine.NewNamedResource("test", "t1")
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r2, _ := engine.NewNamedResource("test", "t2")
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x1 := r1.(*resources.TestRes)
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x2 := r2.(*resources.TestRes)
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s1, s2 := "testing", "testing"
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x1.StringPtr = &s1
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x2.StringPtr = &s2
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graph.AddVertex(x1, x2)
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values = append(values, test{
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name: "double include different types allowed",
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code: `
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class c1($a, $b) {
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if $b == $b { # for example purposes
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test $a {
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stringptr => "testing",
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}
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}
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}
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include c1("t1", "hello")
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include c1("t2", 42) # this has a different sig
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`,
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fail: false,
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graph: graph,
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})
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}
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// TODO: add this test once printf supports %v
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//{
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// graph, _ := pgraph.NewGraph("g")
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// r1, _ := engine.NewNamedResource("test", "t1")
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// r2, _ := engine.NewNamedResource("test", "t2")
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// x1 := r1.(*resources.TestRes)
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// x2 := r2.(*resources.TestRes)
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// s1, s2 := "value is: hello", "value is: 42"
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// x1.StringPtr = &s1
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// x2.StringPtr = &s2
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// graph.AddVertex(x1, x2)
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// values = append(values, test{
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// name: "double include different printf types allowed",
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// code: `
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// class c1($a, $b) {
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// test $a {
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// stringptr => printf("value is: %v", $b),
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// }
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// }
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// include c1("t1", "hello")
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// include c1("t2", 42)
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// `,
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// fail: false,
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// graph: graph,
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// })
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//}
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{
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graph, _ := pgraph.NewGraph("g")
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r1, _ := engine.NewNamedResource("test", "t1")
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r2, _ := engine.NewNamedResource("test", "t2")
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x1 := r1.(*resources.TestRes)
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x2 := r2.(*resources.TestRes)
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s1, s2 := "hey", "hey"
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x1.StringPtr = &s1
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x2.StringPtr = &s2
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graph.AddVertex(x1, x2)
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values = append(values, test{
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name: "double include with variable in parent scope",
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code: `
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$foo = "hey"
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class c1($a) {
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test $a {
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stringptr => $foo,
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}
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}
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include c1("t1")
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|
include c1("t2")
|
|
`,
|
|
fail: false,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
r1, _ := engine.NewNamedResource("test", "t1")
|
|
r2, _ := engine.NewNamedResource("test", "t2")
|
|
x1 := r1.(*resources.TestRes)
|
|
x2 := r2.(*resources.TestRes)
|
|
s1, s2 := "hey", "hey"
|
|
x1.StringPtr = &s1
|
|
x2.StringPtr = &s2
|
|
graph.AddVertex(x1, x2)
|
|
values = append(values, test{
|
|
name: "double include with out of order variable in parent scope",
|
|
code: `
|
|
include c1("t1")
|
|
include c1("t2")
|
|
class c1($a) {
|
|
test $a {
|
|
stringptr => $foo,
|
|
}
|
|
}
|
|
$foo = "hey"
|
|
`,
|
|
fail: false,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
r1, _ := engine.NewNamedResource("test", "t1")
|
|
x1 := r1.(*resources.TestRes)
|
|
s1 := "hello"
|
|
x1.StringPtr = &s1
|
|
graph.AddVertex(x1)
|
|
values = append(values, test{
|
|
name: "duplicate include identical",
|
|
code: `
|
|
include c1("t1", "hello")
|
|
class c1($a, $b) {
|
|
test $a {
|
|
stringptr => $b,
|
|
}
|
|
}
|
|
include c1("t1", "hello") # this is an identical dupe
|
|
`,
|
|
fail: false,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
r1, _ := engine.NewNamedResource("test", "t1")
|
|
x1 := r1.(*resources.TestRes)
|
|
s1 := "hello"
|
|
x1.StringPtr = &s1
|
|
graph.AddVertex(x1)
|
|
values = append(values, test{
|
|
name: "duplicate include non-identical",
|
|
code: `
|
|
include c1("t1", "hello")
|
|
class c1($a, $b) {
|
|
if $a == "t1" {
|
|
test $a {
|
|
stringptr => $b,
|
|
}
|
|
} else {
|
|
test "t1" {
|
|
stringptr => $b,
|
|
}
|
|
}
|
|
}
|
|
include c1("t?", "hello") # should cause an identical dupe
|
|
`,
|
|
fail: false,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
values = append(values, test{
|
|
name: "duplicate include incompatible",
|
|
code: `
|
|
include c1("t1", "hello")
|
|
class c1($a, $b) {
|
|
test $a {
|
|
stringptr => $b,
|
|
}
|
|
}
|
|
include c1("t1", "world") # incompatible
|
|
`,
|
|
fail: true, // incompatible resources
|
|
})
|
|
}
|
|
{
|
|
values = append(values, test{
|
|
name: "class wrong number of args 1",
|
|
code: `
|
|
include c1("hello") # missing second arg
|
|
class c1($a, $b) {
|
|
test $a {
|
|
stringptr => $b,
|
|
}
|
|
}
|
|
`,
|
|
fail: true, // but should NOT panic
|
|
})
|
|
}
|
|
{
|
|
values = append(values, test{
|
|
name: "class wrong number of args 2",
|
|
code: `
|
|
include c1("hello", 42) # added second arg
|
|
class c1($a) {
|
|
test $a {
|
|
stringptr => "world",
|
|
}
|
|
}
|
|
`,
|
|
fail: true, // but should NOT panic
|
|
})
|
|
}
|
|
{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
r1, _ := engine.NewNamedResource("test", "t1")
|
|
r2, _ := engine.NewNamedResource("test", "t2")
|
|
x1 := r1.(*resources.TestRes)
|
|
x2 := r2.(*resources.TestRes)
|
|
s1, s2 := "hello is 42", "world is 13"
|
|
x1.StringPtr = &s1
|
|
x2.StringPtr = &s2
|
|
graph.AddVertex(x1, x2)
|
|
values = append(values, test{
|
|
name: "nested classes 1",
|
|
code: `
|
|
include c1("t1", "hello") # test["t1"] -> hello is 42
|
|
include c1("t2", "world") # test["t2"] -> world is 13
|
|
|
|
class c1($a, $b) {
|
|
# nested class definition
|
|
class c2($c) {
|
|
test $a {
|
|
stringptr => printf("%s is %d", $b, $c),
|
|
}
|
|
}
|
|
|
|
if $a == "t1" {
|
|
include c2(42)
|
|
} else {
|
|
include c2(13)
|
|
}
|
|
}
|
|
`,
|
|
fail: false,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
values = append(values, test{
|
|
name: "nested classes out of scope 1",
|
|
code: `
|
|
include c1("t1", "hello") # test["t1"] -> hello is 42
|
|
include c2(99) # out of scope
|
|
|
|
class c1($a, $b) {
|
|
# nested class definition
|
|
class c2($c) {
|
|
test $a {
|
|
stringptr => printf("%s is %d", $b, $c),
|
|
}
|
|
}
|
|
|
|
if $a == "t1" {
|
|
include c2(42)
|
|
} else {
|
|
include c2(13)
|
|
}
|
|
}
|
|
`,
|
|
fail: true,
|
|
})
|
|
}
|
|
// TODO: recursive classes are not currently supported (should they be?)
|
|
//{
|
|
// graph, _ := pgraph.NewGraph("g")
|
|
// values = append(values, test{
|
|
// name: "recursive classes 0",
|
|
// code: `
|
|
// include c1(0) # start at zero
|
|
// class c1($count) {
|
|
// if $count != 3 {
|
|
// include c1($count + 1)
|
|
// }
|
|
// }
|
|
// `,
|
|
// fail: false,
|
|
// graph: graph, // produces no output
|
|
// })
|
|
//}
|
|
// TODO: recursive classes are not currently supported (should they be?)
|
|
//{
|
|
// graph, _ := pgraph.NewGraph("g")
|
|
// r0, _ := engine.NewNamedResource("test", "done")
|
|
// x0 := r0.(*resources.TestRes)
|
|
// s0 := "count is 3"
|
|
// x0.StringPtr = &s0
|
|
// graph.AddVertex(x0)
|
|
// values = append(values, test{
|
|
// name: "recursive classes 1",
|
|
// code: `
|
|
// $max = 3
|
|
// include c1(0) # start at zero
|
|
// # test["done"] -> count is 3
|
|
// class c1($count) {
|
|
// if $count == $max {
|
|
// test "done" {
|
|
// stringptr => printf("count is %d", $count),
|
|
// }
|
|
// } else {
|
|
// include c1($count + 1)
|
|
// }
|
|
// }
|
|
// `,
|
|
// fail: false,
|
|
// graph: graph,
|
|
// })
|
|
//}
|
|
// TODO: recursive classes are not currently supported (should they be?)
|
|
//{
|
|
// graph, _ := pgraph.NewGraph("g")
|
|
// r0, _ := engine.NewNamedResource("test", "zero")
|
|
// r1, _ := engine.NewNamedResource("test", "ix:1")
|
|
// r2, _ := engine.NewNamedResource("test", "ix:2")
|
|
// r3, _ := engine.NewNamedResource("test", "ix:3")
|
|
// x0 := r0.(*resources.TestRes)
|
|
// x1 := r1.(*resources.TestRes)
|
|
// x2 := r2.(*resources.TestRes)
|
|
// x3 := r3.(*resources.TestRes)
|
|
// s0, s1, s2, s3 := "count is 0", "count is 1", "count is 2", "count is 3"
|
|
// x0.StringPtr = &s0
|
|
// x1.StringPtr = &s1
|
|
// x2.StringPtr = &s2
|
|
// x3.StringPtr = &s3
|
|
// graph.AddVertex(x0, x1, x2, x3)
|
|
// values = append(values, test{
|
|
// name: "recursive classes 2",
|
|
// code: `
|
|
// include c1("ix", 3)
|
|
// # test["ix:3"] -> count is 3
|
|
// # test["ix:2"] -> count is 2
|
|
// # test["ix:1"] -> count is 1
|
|
// # test["zero"] -> count is 0
|
|
// class c1($name, $count) {
|
|
// if $count == 0 {
|
|
// test "zero" {
|
|
// stringptr => printf("count is %d", $count),
|
|
// }
|
|
// } else {
|
|
// include c1($name, $count - 1)
|
|
// test "${name}:${count}" {
|
|
// stringptr => printf("count is %d", $count),
|
|
// }
|
|
// }
|
|
// }
|
|
// `,
|
|
// fail: false,
|
|
// graph: graph,
|
|
// })
|
|
//}
|
|
|
|
for index, test := range values { // run all the tests
|
|
name, code, fail, exp := test.name, test.code, test.fail, test.graph
|
|
|
|
if name == "" {
|
|
name = "<sub test not named>"
|
|
}
|
|
|
|
//if index != 3 { // hack to run a subset (useful for debugging)
|
|
//if test.name != "nil" {
|
|
// continue
|
|
//}
|
|
|
|
t.Logf("\n\ntest #%d (%s) ----------------\n\n", index, name)
|
|
|
|
graph, err := runInterpret(t, code)
|
|
if !fail && err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: runInterpret failed with: %+v", index, err)
|
|
continue
|
|
}
|
|
if fail && err == nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: runInterpret passed, expected fail", index)
|
|
continue
|
|
}
|
|
|
|
if fail { // can't process graph if it's nil
|
|
continue
|
|
}
|
|
|
|
t.Logf("test #%d: graph: %+v", index, graph)
|
|
// TODO: improve: https://github.com/purpleidea/mgmt/issues/199
|
|
if err := graph.GraphCmp(exp, vertexCmpFn, edgeCmpFn); err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Logf("test #%d: actual: %v%s", index, graph, fullPrint(graph))
|
|
t.Logf("test #%d: expected: %v%s", index, exp, fullPrint(exp))
|
|
t.Errorf("test #%d: cmp error:\n%v", index, err)
|
|
continue
|
|
}
|
|
}
|
|
}
|