3f42e5f702
This expands the Stmt and Expr interfaces to add an Init method. This is used to pass in Debug and Logf values, but is also used to validate the AST. This gets rid of standalone use of the "log" package.
669 lines
16 KiB
Go
669 lines
16 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/interfaces"
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"github.com/purpleidea/mgmt/lang/unification"
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"github.com/purpleidea/mgmt/pgraph"
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)
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func vertexAstCmpFn(v1, v2 pgraph.Vertex) (bool, error) {
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//fmt.Printf("V1: %T %+v\n", v1, v1)
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//node := v1.(*funcs.Node)
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//fmt.Printf("node: %T %+v\n", node, node)
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//fmt.Printf("V2: %T %+v\n", v2, v2)
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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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return v1.String() == v2.String(), nil
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}
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func edgeAstCmpFn(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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type vtex string
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func (obj *vtex) String() string {
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return string(*obj)
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}
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type edge string
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func (obj *edge) String() string {
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return string(*obj)
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}
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func TestAstFunc0(t *testing.T) {
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scope := &interfaces.Scope{ // global scope
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Variables: map[string]interfaces.Expr{
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"hello": &ExprStr{V: "world"},
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"answer": &ExprInt{V: 42},
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},
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}
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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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scope *interfaces.Scope
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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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nil,
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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{
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name: "scope only",
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code: ``,
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fail: false,
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scope: scope, // use the scope defined above
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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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v1, v2 := vtex("int(42)"), vtex("var(x)")
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e1 := edge("x")
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graph.AddVertex(&v1, &v2)
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graph.AddEdge(&v1, &v2, &e1)
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values = append(values, test{
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name: "two vars",
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code: `
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$x = 42
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$y = $x
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`,
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// TODO: this should fail with an unused variable error!
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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values = append(values, test{
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name: "self-referential vars",
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code: `
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$x = $y
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$y = $x
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`,
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fail: true,
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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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v1, v2, v3, v4, v5 := vtex("int(42)"), vtex("var(a)"), vtex("var(b)"), vtex("var(c)"), vtex("str(t)")
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e1, e2, e3 := edge("a"), edge("b"), edge("c")
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graph.AddVertex(&v1, &v2, &v3, &v4, &v5)
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graph.AddEdge(&v1, &v2, &e1)
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graph.AddEdge(&v2, &v3, &e2)
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graph.AddEdge(&v3, &v4, &e3)
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values = append(values, test{
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name: "chained vars",
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code: `
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test "t" {
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int64ptr => $c,
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}
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$c = $b
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$b = $a
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$a = 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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v1, v2 := vtex("bool(true)"), vtex("var(b)")
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graph.AddVertex(&v1, &v2)
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e1 := edge("b")
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graph.AddEdge(&v1, &v2, &e1)
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values = append(values, test{
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name: "simple bool",
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code: `
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if $b {
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}
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$b = true
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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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v1, v2, v3, v4, v5 := vtex("str(t)"), vtex("str(+)"), vtex("int(42)"), vtex("int(13)"), vtex(fmt.Sprintf("call:%s(str(+), int(42), int(13))", operatorFuncName))
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graph.AddVertex(&v1, &v2, &v3, &v4, &v5)
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e1, e2, e3 := edge("x"), edge("a"), edge("b")
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graph.AddEdge(&v2, &v5, &e1)
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graph.AddEdge(&v3, &v5, &e2)
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graph.AddEdge(&v4, &v5, &e3)
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values = append(values, test{
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name: "simple operator",
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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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v1, v2, v3 := vtex("str(t)"), vtex("str(-)"), vtex("str(+)")
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v4, v5, v6 := vtex("int(42)"), vtex("int(13)"), vtex("int(99)")
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v7 := vtex(fmt.Sprintf("call:%s(str(+), int(42), int(13))", operatorFuncName))
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v8 := vtex(fmt.Sprintf("call:%s(str(-), call:%s(str(+), int(42), int(13)), int(99))", operatorFuncName, operatorFuncName))
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graph.AddVertex(&v1, &v2, &v3, &v4, &v5, &v6, &v7, &v8)
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e1, e2, e3 := edge("x"), edge("a"), edge("b")
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graph.AddEdge(&v3, &v7, &e1)
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graph.AddEdge(&v4, &v7, &e2)
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graph.AddEdge(&v5, &v7, &e3)
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e4, e5, e6 := edge("x"), edge("a"), edge("b")
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graph.AddEdge(&v2, &v8, &e4)
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graph.AddEdge(&v7, &v8, &e5)
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graph.AddEdge(&v6, &v8, &e6)
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values = append(values, test{
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name: "simple operators",
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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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v1, v2 := vtex("bool(true)"), vtex("str(t)")
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v3, v4 := vtex("int(13)"), vtex("int(42)")
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v5, v6 := vtex("var(i)"), vtex("var(x)")
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v7, v8 := vtex("str(+)"), vtex(fmt.Sprintf("call:%s(str(+), int(42), var(i))", operatorFuncName))
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e1, e2, e3, e4, e5 := edge("x"), edge("a"), edge("b"), edge("i"), edge("x")
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graph.AddVertex(&v1, &v2, &v3, &v4, &v5, &v6, &v7, &v8)
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graph.AddEdge(&v3, &v5, &e4)
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graph.AddEdge(&v7, &v8, &e1)
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graph.AddEdge(&v4, &v8, &e2)
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graph.AddEdge(&v5, &v8, &e3)
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graph.AddEdge(&v8, &v6, &e5)
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values = append(values, test{
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name: "nested resource and scoped var",
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code: `
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if true {
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test "t" {
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int64ptr => $x,
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}
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$x = 42 + $i
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}
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$i = 13
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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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values = append(values, test{
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name: "out of scope error",
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code: `
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# should be out of scope, and a compile error!
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if $b {
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}
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if true {
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$b = true
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}
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`,
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fail: true,
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})
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}
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{
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values = append(values, test{
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name: "variable re-declaration error",
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code: `
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# this should fail b/c of variable re-declaration
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$x = "hello"
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$x = "world" # woops
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`,
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fail: true,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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v1, v2, v3 := vtex("str(hello)"), vtex("str(world)"), vtex("bool(true)")
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v4, v5 := vtex("var(x)"), vtex("str(t)")
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graph.AddVertex(&v1, &v2, &v3, &v4, &v5)
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e1 := edge("x")
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// only one edge! (cool)
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graph.AddEdge(&v1, &v4, &e1)
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values = append(values, test{
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name: "variable shadowing",
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code: `
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# this should be okay, because var is shadowed
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$x = "hello"
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if true {
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$x = "world" # shadowed
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}
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test "t" {
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stringptr => $x,
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}
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`,
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fail: false,
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graph: graph,
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})
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}
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{
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graph, _ := pgraph.NewGraph("g")
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v1, v2, v3 := vtex("str(hello)"), vtex("str(world)"), vtex("bool(true)")
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v4, v5 := vtex("var(x)"), vtex("str(t)")
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graph.AddVertex(&v1, &v2, &v3, &v4, &v5)
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e1 := edge("x")
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// only one edge! (cool)
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graph.AddEdge(&v2, &v4, &e1)
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values = append(values, test{
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name: "variable shadowing inner",
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code: `
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# this should be okay, because var is shadowed
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$x = "hello"
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if true {
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$x = "world" # shadowed
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test "t" {
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stringptr => $x,
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}
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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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// // FIXME: blocked by: https://github.com/purpleidea/mgmt/issues/199
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//{
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// graph, _ := pgraph.NewGraph("g")
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// v0 := vtex("bool(true)")
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// v1, v2 := vtex("str(hello)"), vtex("str(world)")
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// v3, v4 := vtex("var(x)"), vtex("var(x)") // different vertices!
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// v5, v6 := vtex("str(t1)"), vtex("str(t2)")
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//
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// graph.AddVertex(&v0, &v1, &v2, &v3, &v4, &v5, &v6)
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// e1, e2 := edge("x"), edge("x")
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// graph.AddEdge(&v1, &v3, &e1)
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// graph.AddEdge(&v2, &v4, &e2)
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//
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// values = append(values, test{
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// name: "variable shadowing both",
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// code: `
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// # this should be okay, because var is shadowed
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// $x = "hello"
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// if true {
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// $x = "world" # shadowed
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// test "t2" {
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// stringptr => $x,
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// }
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// }
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// test "t1" {
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// stringptr => $x,
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// }
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// `,
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// fail: false,
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// graph: graph,
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// })
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//}
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{
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values = append(values, test{
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name: "variable re-declaration and type change error",
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code: `
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# this should fail b/c of variable re-declaration
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$x = "wow"
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$x = 99 # woops, but also a change of type :P
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`,
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fail: true,
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})
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}
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for index, test := range values { // run all the tests
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name, code, fail, scope, exp := test.name, test.code, test.fail, test.scope, test.graph
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if name == "" {
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name = "<sub test not named>"
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}
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//if index != 3 { // hack to run a subset (useful for debugging)
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//if test.name != "simple operators" {
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// continue
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//}
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t.Logf("\n\ntest #%d (%s) ----------------\n\n", index, name)
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str := strings.NewReader(code)
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ast, err := LexParse(str)
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if err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: lex/parse failed with: %+v", index, err)
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continue
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}
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t.Logf("test #%d: AST: %+v", index, ast)
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data := &interfaces.Data{
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Debug: true,
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Logf: func(format string, v ...interface{}) {
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t.Logf("ast: "+format, v...)
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},
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}
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// some of this might happen *after* interpolate in SetScope or Unify...
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if err := ast.Init(data); err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: could not init and validate AST: %+v", index, err)
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return
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}
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iast, err := ast.Interpolate()
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if err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: interpolate failed with: %+v", index, err)
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continue
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}
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// propagate the scope down through the AST...
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err = iast.SetScope(scope)
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if !fail && err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: could not set scope: %+v", index, err)
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continue
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}
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if fail && err != nil {
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continue // fail happened during set scope, don't run unification!
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}
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// apply type unification
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logf := func(format string, v ...interface{}) {
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t.Logf(fmt.Sprintf("test #%d", index)+": unification: "+format, v...)
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}
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err = unification.Unify(iast, unification.SimpleInvariantSolverLogger(logf))
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if !fail && err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: could not unify types: %+v", index, err)
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continue
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}
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// maybe it will fail during graph below instead?
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//if fail && err == nil {
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// t.Errorf("test #%d: FAIL", index)
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// t.Errorf("test #%d: unification passed, expected fail", index)
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// continue
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//}
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if fail && err != nil {
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continue // fail happened during unification, don't run Graph!
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}
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// build the function graph
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graph, err := iast.Graph()
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if !fail && err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: functions failed with: %+v", index, err)
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continue
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}
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if fail && err == nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: functions passed, expected fail", index)
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continue
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}
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if fail { // can't process graph if it's nil
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// TODO: match against expected error
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t.Logf("test #%d: error: %+v", index, err)
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continue
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}
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t.Logf("test #%d: graph: %+v", index, graph)
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// TODO: improve: https://github.com/purpleidea/mgmt/issues/199
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if err := graph.GraphCmp(exp, vertexAstCmpFn, edgeAstCmpFn); err != nil {
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t.Errorf("test #%d: FAIL\n\n", index)
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t.Logf("test #%d: actual (g1): %v%s\n\n", index, graph, fullPrint(graph))
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t.Logf("test #%d: expected (g2): %v%s\n\n", index, exp, fullPrint(exp))
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t.Errorf("test #%d: cmp error:\n%v", index, err)
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continue
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}
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for i, v := range graph.Vertices() {
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t.Logf("test #%d: vertex(%d): %+v", index, i, v)
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}
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for v1 := range graph.Adjacency() {
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for v2, e := range graph.Adjacency()[v1] {
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t.Logf("test #%d: edge(%+v): %+v -> %+v", index, e, v1, v2)
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}
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}
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}
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}
|
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|
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// TestAstInterpret0 should only be run in limited circumstances. Read the code
|
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// comments below to see how it is run.
|
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func TestAstInterpret0(t *testing.T) {
|
|
type test struct { // an individual test
|
|
name string
|
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code string
|
|
fail bool
|
|
graph *pgraph.Graph
|
|
}
|
|
values := []test{}
|
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|
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{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
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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})
|
|
}
|
|
{
|
|
values = append(values, test{
|
|
name: "wrong res field type",
|
|
code: `
|
|
test "t1" {
|
|
stringptr => 42, # int, not str
|
|
}
|
|
`,
|
|
fail: true,
|
|
})
|
|
}
|
|
{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
t1, _ := engine.NewNamedResource("test", "t1")
|
|
x := t1.(*resources.TestRes)
|
|
int64ptr := int64(42)
|
|
x.Int64Ptr = &int64ptr
|
|
str := "okay cool"
|
|
x.StringPtr = &str
|
|
int8ptr := int8(127)
|
|
int8ptrptr := &int8ptr
|
|
int8ptrptrptr := &int8ptrptr
|
|
x.Int8PtrPtrPtr = &int8ptrptrptr
|
|
graph.AddVertex(t1)
|
|
values = append(values, test{
|
|
name: "resource with three pointer fields",
|
|
code: `
|
|
test "t1" {
|
|
int64ptr => 42,
|
|
stringptr => "okay cool",
|
|
int8ptrptrptr => 127, # super nested
|
|
}
|
|
`,
|
|
fail: false,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
graph, _ := pgraph.NewGraph("g")
|
|
t1, _ := engine.NewNamedResource("test", "t1")
|
|
x := t1.(*resources.TestRes)
|
|
stringptr := "wow"
|
|
x.StringPtr = &stringptr
|
|
graph.AddVertex(t1)
|
|
values = append(values, test{
|
|
name: "resource with simple string pointer field",
|
|
code: `
|
|
test "t1" {
|
|
stringptr => "wow",
|
|
}
|
|
`,
|
|
graph: graph,
|
|
})
|
|
}
|
|
{
|
|
// FIXME: add a better vertexCmpFn so we can compare send/recv!
|
|
graph, _ := pgraph.NewGraph("g")
|
|
t1, _ := engine.NewNamedResource("test", "t1")
|
|
{
|
|
x := t1.(*resources.TestRes)
|
|
int64Ptr := int64(42)
|
|
x.Int64Ptr = &int64Ptr
|
|
graph.AddVertex(t1)
|
|
}
|
|
t2, _ := engine.NewNamedResource("test", "t2")
|
|
{
|
|
x := t2.(*resources.TestRes)
|
|
int64Ptr := int64(13)
|
|
x.Int64Ptr = &int64Ptr
|
|
graph.AddVertex(t2)
|
|
}
|
|
edge := &engine.Edge{
|
|
Name: fmt.Sprintf("%s -> %s", t1, t2),
|
|
Notify: false,
|
|
}
|
|
graph.AddEdge(t1, t2, edge)
|
|
values = append(values, test{
|
|
name: "two resources and send/recv edge",
|
|
code: `
|
|
test "t1" {
|
|
int64ptr => 42,
|
|
}
|
|
test "t2" {
|
|
int64ptr => 13,
|
|
}
|
|
|
|
Test["t1"].foosend -> Test["t2"].barrecv # send/recv
|
|
`,
|
|
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)
|
|
|
|
str := strings.NewReader(code)
|
|
ast, err := LexParse(str)
|
|
if err != nil {
|
|
t.Errorf("test #%d: lex/parse failed with: %+v", index, err)
|
|
continue
|
|
}
|
|
t.Logf("test #%d: AST: %+v", index, ast)
|
|
|
|
data := &interfaces.Data{
|
|
Debug: true,
|
|
Logf: func(format string, v ...interface{}) {
|
|
t.Logf("ast: "+format, v...)
|
|
},
|
|
}
|
|
// some of this might happen *after* interpolate in SetScope or Unify...
|
|
if err := ast.Init(data); err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: could not init and validate AST: %+v", index, err)
|
|
return
|
|
}
|
|
|
|
// these tests only work in certain cases, since this does not
|
|
// perform type unification, run the function graph engine, and
|
|
// only gives you limited results... don't expect normal code to
|
|
// run and produce meaningful things in this test...
|
|
graph, err := interpret(ast)
|
|
|
|
if !fail && err != nil {
|
|
t.Errorf("test #%d: interpret failed with: %+v", index, err)
|
|
continue
|
|
}
|
|
if fail && err == nil {
|
|
t.Errorf("test #%d: interpret passed, expected fail", index)
|
|
continue
|
|
}
|
|
|
|
if fail { // can't process graph if it's nil
|
|
// TODO: match against expected error
|
|
t.Logf("test #%d: expected fail, error: %+v", index, err)
|
|
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.Logf("test #%d: actual (g1): %v%s", index, graph, fullPrint(graph))
|
|
t.Logf("test #%d: expected (g2): %v%s", index, exp, fullPrint(exp))
|
|
t.Errorf("test #%d: cmp error:\n%v", index, err)
|
|
continue
|
|
}
|
|
|
|
for i, v := range graph.Vertices() {
|
|
t.Logf("test #%d: vertex(%d): %+v", index, i, v)
|
|
}
|
|
for v1 := range graph.Adjacency() {
|
|
for v2, e := range graph.Adjacency()[v1] {
|
|
t.Logf("test #%d: edge(%+v): %+v -> %+v", index, e, v1, v2)
|
|
}
|
|
}
|
|
}
|
|
}
|