43f0ddd25d
I found a case where we had two missing unification rules. Now fixed in the previous commits, and including this test to show I'm responsible. I've added the same test in two locations for redundancy and as an example.
831 lines
17 KiB
Go
831 lines
17 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/lang/funcs"
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"github.com/purpleidea/mgmt/lang/interfaces"
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"github.com/purpleidea/mgmt/lang/types"
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"github.com/purpleidea/mgmt/lang/unification"
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"github.com/purpleidea/mgmt/util"
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)
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func TestUnification1(t *testing.T) {
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type test struct { // an individual test
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name string
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ast interfaces.Stmt // raw AST
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fail bool
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expect map[interfaces.Expr]*types.Type
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experr error // expected error if fail == true (nil ignores it)
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experrstr string // expected error prefix
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}
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testCases := []test{}
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// this causes a panic, so it can't be used
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//{
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// testCases = append(testCases, test{
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// "nil",
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// nil,
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// true, // expect error
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// nil, // no AST
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// })
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//}
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{
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expr := &ExprStr{V: "hello"}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{V: "t1"},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "str",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "one res",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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expr: types.TypeStr,
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},
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})
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}
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{
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v1 := &ExprStr{}
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v2 := &ExprStr{}
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v3 := &ExprStr{}
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expr := &ExprList{
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Elements: []interfaces.Expr{
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v1,
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v2,
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v3,
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{V: "test"},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "slicestring",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "list of strings",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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v1: types.TypeStr,
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v2: types.TypeStr,
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v3: types.TypeStr,
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expr: types.NewType("[]str"),
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},
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})
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}
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{
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k1 := &ExprInt{}
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k2 := &ExprInt{}
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k3 := &ExprInt{}
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v1 := &ExprFloat{}
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v2 := &ExprFloat{}
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v3 := &ExprFloat{}
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expr := &ExprMap{
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KVs: []*ExprMapKV{
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{Key: k1, Val: v1},
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{Key: k2, Val: v2},
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{Key: k3, Val: v3},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{V: "test"},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "mapintfloat",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "map of int->float",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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k1: types.TypeInt,
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k2: types.TypeInt,
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k3: types.TypeInt,
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v1: types.TypeFloat,
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v2: types.TypeFloat,
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v3: types.TypeFloat,
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expr: types.NewType("map{int: float}"),
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},
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})
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}
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{
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b := &ExprBool{}
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s := &ExprStr{}
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i := &ExprInt{}
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f := &ExprFloat{}
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expr := &ExprStruct{
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Fields: []*ExprStructField{
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{Name: "somebool", Value: b},
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{Name: "somestr", Value: s},
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{Name: "someint", Value: i},
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{Name: "somefloat", Value: f},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{V: "test"},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "mixedstruct",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "simple struct",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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b: types.TypeBool,
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s: types.TypeStr,
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i: types.TypeInt,
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f: types.TypeFloat,
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expr: types.NewType("struct{somebool bool; somestr str; someint int; somefloat float}"),
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},
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})
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}
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{
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// test "n1" {
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// int64ptr => 13 + 42,
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//}
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expr := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprInt{
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V: 13,
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},
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&ExprInt{
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V: 42,
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},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "n1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "int64ptr",
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Value: expr, // func
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "func call",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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expr: types.NewType("int"),
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},
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})
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}
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{
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//test "n1" {
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// int64ptr => 13 + 42 - 4,
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//}
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innerFunc := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "-",
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},
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&ExprInt{
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V: 42,
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},
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&ExprInt{
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V: 4,
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},
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},
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}
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expr := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprInt{
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V: 13,
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},
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innerFunc, // nested func, can we unify?
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "n1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "int64ptr",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "func call, multiple ints",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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innerFunc: types.NewType("int"),
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expr: types.NewType("int"),
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},
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})
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}
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{
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//test "n1" {
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// float32 => -25.38789 + 32.6 + 13.7,
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//}
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innerFunc := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprFloat{
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V: 32.6,
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},
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&ExprFloat{
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V: 13.7,
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},
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},
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}
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expr := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprFloat{
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V: -25.38789,
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},
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innerFunc, // nested func, can we unify?
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "n1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "float32",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "func call, multiple floats",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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innerFunc: types.NewType("float"),
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expr: types.NewType("float"),
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},
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})
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}
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{
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//$x = 42 - 13
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innerFunc := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "-",
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},
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&ExprInt{
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V: 42,
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},
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&ExprInt{
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V: 13,
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},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtBind{
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Ident: "x",
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Value: innerFunc,
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},
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},
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}
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testCases = append(testCases, test{
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name: "assign from func call or two ints",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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innerFunc: types.NewType("int"),
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},
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})
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}
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{
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//$x = template("hello", 42)
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innerFunc := &ExprCall{
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Name: "template",
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Args: []interfaces.Expr{
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&ExprStr{
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V: "hello",
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},
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&ExprInt{
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V: 42,
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},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtBind{
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Ident: "x",
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Value: innerFunc,
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},
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},
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}
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testCases = append(testCases, test{
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name: "simple template",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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innerFunc: types.NewType("str"),
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},
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})
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}
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{
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//$v = 42
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//$x = template("hello", $v) # redirect var for harder unification
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innerFunc := &ExprCall{
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Name: "template",
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Args: []interfaces.Expr{
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&ExprStr{
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V: "hello", // whatever...
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},
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&ExprVar{
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Name: "x",
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},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtBind{
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Ident: "v",
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Value: &ExprInt{
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V: 42,
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},
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},
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&StmtBind{
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Ident: "x",
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Value: innerFunc,
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},
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},
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}
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testCases = append(testCases, test{
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name: "complex template",
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ast: stmt,
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fail: false,
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expect: map[interfaces.Expr]*types.Type{
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innerFunc: types.NewType("str"),
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},
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})
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}
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{
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//test "t1" {
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// stringptr => datetime(), # bad (str vs. int)
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//}
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expr := &ExprCall{
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Name: "datetime",
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Args: []interfaces.Expr{},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{V: "t1"},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "single fact unification",
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ast: stmt,
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fail: true,
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})
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}
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{
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//test "t1" {
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// stringptr => getenv("GOPATH", "bug"), # bad (two args vs. one)
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//}
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expr := &ExprCall{
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Name: "getenv",
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Args: []interfaces.Expr{
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&ExprStr{
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V: "GOPATH",
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},
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&ExprStr{
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V: "bug",
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},
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},
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}
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stmt := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{V: "t1"},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: expr,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "function, wrong arg count",
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ast: stmt,
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fail: true,
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})
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}
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// XXX: add these tests when we fix the bug!
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//{
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// //test "t1" {
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// // import "fmt"
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// // stringptr => fmt.printf("hello %s and %s", "one"), # bad
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// //}
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// expr := &ExprCall{
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// Name: "fmt.printf",
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// Args: []interfaces.Expr{
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// &ExprStr{
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// V: "hello %s and %s",
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// },
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// &ExprStr{
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// V: "one",
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// },
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// },
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// }
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// stmt := &StmtProg{
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// Prog: []interfaces.Stmt{
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// &StmtImport{
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// Name: "fmt",
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// },
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// &StmtRes{
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// Kind: "test",
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// Name: &ExprStr{V: "t1"},
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// Contents: []StmtResContents{
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// &StmtResField{
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// Field: "stringptr",
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// Value: expr,
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// },
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// },
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// },
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// },
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// }
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// testCases = append(testCases, test{
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// name: "function, missing arg for printf",
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// ast: stmt,
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// fail: true,
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// })
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//}
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//{
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// //test "t1" {
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// // import "fmt"
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// // stringptr => fmt.printf("hello %s and %s", "one", "two", "three"), # bad
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// //}
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// expr := &ExprCall{
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// Name: "fmt.printf",
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// Args: []interfaces.Expr{
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// &ExprStr{
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// V: "hello %s and %s",
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// },
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// &ExprStr{
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// V: "one",
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// },
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// &ExprStr{
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// V: "two",
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// },
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// &ExprStr{
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// V: "three",
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// },
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// },
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// }
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// stmt := &StmtProg{
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// Prog: []interfaces.Stmt{
|
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// &StmtImport{
|
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// Name: "fmt",
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// },
|
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// &StmtRes{
|
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// Kind: "test",
|
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// Name: &ExprStr{V: "t1"},
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// Contents: []StmtResContents{
|
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// &StmtResField{
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// Field: "stringptr",
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// Value: expr,
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// },
|
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// },
|
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// },
|
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// },
|
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// }
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// testCases = append(testCases, test{
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// name: "function, extra arg for printf",
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// ast: stmt,
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// fail: true,
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// })
|
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//}
|
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{
|
|
//test "t1" {
|
|
// import "fmt"
|
|
// stringptr => fmt.printf("hello %s and %s", "one", "two"),
|
|
//}
|
|
expr := &ExprCall{
|
|
Name: "fmt.printf",
|
|
Args: []interfaces.Expr{
|
|
&ExprStr{
|
|
V: "hello %s and %s",
|
|
},
|
|
&ExprStr{
|
|
V: "one",
|
|
},
|
|
&ExprStr{
|
|
V: "two",
|
|
},
|
|
},
|
|
}
|
|
stmt := &StmtProg{
|
|
Prog: []interfaces.Stmt{
|
|
&StmtImport{
|
|
Name: "fmt",
|
|
},
|
|
&StmtRes{
|
|
Kind: "test",
|
|
Name: &ExprStr{V: "t1"},
|
|
Contents: []StmtResContents{
|
|
&StmtResField{
|
|
Field: "stringptr",
|
|
Value: expr,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
testCases = append(testCases, test{
|
|
name: "function, regular printf unification",
|
|
ast: stmt,
|
|
fail: false,
|
|
expect: map[interfaces.Expr]*types.Type{
|
|
expr: types.NewType("str"),
|
|
},
|
|
})
|
|
}
|
|
{
|
|
//import "fmt"
|
|
//$x str = if true { # should fail unification
|
|
// 42
|
|
//} else {
|
|
// 13
|
|
//}
|
|
//test "t1" {
|
|
// stringptr => fmt.printf("hello %s", $x),
|
|
//}
|
|
cond := &ExprIf{
|
|
Condition: &ExprBool{V: true},
|
|
ThenBranch: &ExprInt{V: 42},
|
|
ElseBranch: &ExprInt{V: 13},
|
|
}
|
|
cond.SetType(types.TypeStr) // should fail unification
|
|
expr := &ExprCall{
|
|
Name: "fmt.printf",
|
|
Args: []interfaces.Expr{
|
|
&ExprStr{
|
|
V: "hello %s",
|
|
},
|
|
&ExprVar{
|
|
Name: "x", // the var
|
|
},
|
|
},
|
|
}
|
|
stmt := &StmtProg{
|
|
Prog: []interfaces.Stmt{
|
|
&StmtImport{
|
|
Name: "fmt",
|
|
},
|
|
&StmtBind{
|
|
Ident: "x", // the var
|
|
Value: cond,
|
|
},
|
|
&StmtRes{
|
|
Kind: "test",
|
|
Name: &ExprStr{V: "t1"},
|
|
Contents: []StmtResContents{
|
|
&StmtResField{
|
|
Field: "anotherstr",
|
|
Value: expr,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
testCases = append(testCases, test{
|
|
name: "typed if expr",
|
|
ast: stmt,
|
|
fail: true,
|
|
experrstr: "can't unify, invariant illogicality with equality: base kind does not match (2 != 3)",
|
|
})
|
|
}
|
|
|
|
names := []string{}
|
|
for index, tc := range testCases { // run all the tests
|
|
if tc.name == "" {
|
|
t.Errorf("test #%d: not named", index)
|
|
continue
|
|
}
|
|
if util.StrInList(tc.name, names) {
|
|
t.Errorf("test #%d: duplicate sub test name of: %s", index, tc.name)
|
|
continue
|
|
}
|
|
names = append(names, tc.name)
|
|
t.Run(fmt.Sprintf("test #%d (%s)", index, tc.name), func(t *testing.T) {
|
|
ast, fail, expect, experr, experrstr := tc.ast, tc.fail, tc.expect, tc.experr, tc.experrstr
|
|
|
|
//str := strings.NewReader(code)
|
|
//ast, err := LexParse(str)
|
|
//if err != nil {
|
|
// t.Errorf("test #%d: lex/parse failed with: %+v", index, err)
|
|
// return
|
|
//}
|
|
// TODO: print out the AST's so that we can see the types
|
|
t.Logf("\n\ntest #%d: AST (before): %+v\n", index, ast)
|
|
|
|
data := &interfaces.Data{
|
|
Debug: true,
|
|
Logf: func(format string, v ...interface{}) {
|
|
t.Logf(fmt.Sprintf("test #%d", index)+": 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
|
|
}
|
|
|
|
// skip interpolation in this test so that the node pointers
|
|
// aren't changed and so we can compare directly to expected
|
|
//astInterpolated, err := ast.Interpolate() // interpolate strings in ast
|
|
//if err != nil {
|
|
// t.Errorf("test #%d: interpolate failed with: %+v", index, err)
|
|
// return
|
|
//}
|
|
//t.Logf("test #%d: astInterpolated: %+v", index, astInterpolated)
|
|
|
|
// top-level, built-in, initial global scope
|
|
scope := &interfaces.Scope{
|
|
Variables: map[string]interfaces.Expr{
|
|
"purpleidea": &ExprStr{V: "hello world!"}, // james says hi
|
|
//"hostname": &ExprStr{V: obj.Hostname},
|
|
},
|
|
// all the built-in top-level, core functions enter here...
|
|
Functions: funcs.LookupPrefix(""),
|
|
}
|
|
// propagate the scope down through the AST...
|
|
if err := ast.SetScope(scope); err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: set scope failed with: %+v", index, err)
|
|
return
|
|
}
|
|
|
|
// apply type unification
|
|
logf := func(format string, v ...interface{}) {
|
|
t.Logf(fmt.Sprintf("test #%d", index)+": unification: "+format, v...)
|
|
}
|
|
err := unification.Unify(ast, unification.SimpleInvariantSolverLogger(logf))
|
|
|
|
// TODO: print out the AST's so that we can see the types
|
|
t.Logf("\n\ntest #%d: AST (after): %+v\n", index, ast)
|
|
|
|
if !fail && err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: unification failed with: %+v", index, err)
|
|
return
|
|
}
|
|
if fail && err == nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: unification passed, expected fail", index)
|
|
return
|
|
}
|
|
if fail && experr != nil && err != experr { // test for specific error!
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: expected fail, got wrong error", index)
|
|
t.Errorf("test #%d: got error: %+v", index, err)
|
|
t.Errorf("test #%d: exp error: %+v", index, experr)
|
|
return
|
|
}
|
|
|
|
if fail && err != nil {
|
|
t.Logf("test #%d: err: %+v", index, err)
|
|
}
|
|
// test for specific error string!
|
|
if fail && experrstr != "" && !strings.HasPrefix(err.Error(), experrstr) {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: expected fail, got wrong error", index)
|
|
t.Errorf("test #%d: got error: %s", index, err.Error())
|
|
t.Errorf("test #%d: exp error: %s", index, experrstr)
|
|
return
|
|
}
|
|
|
|
if expect == nil { // test done early
|
|
return
|
|
}
|
|
// TODO: do this in sorted order
|
|
var failed bool
|
|
for expr, exptyp := range expect {
|
|
typ, err := expr.Type() // lookup type
|
|
if err != nil {
|
|
t.Errorf("test #%d: type lookup of %+v failed with: %+v", index, expr, err)
|
|
failed = true
|
|
break
|
|
}
|
|
|
|
if err := typ.Cmp(exptyp); err != nil {
|
|
t.Errorf("test #%d: type cmp failed with: %+v", index, err)
|
|
t.Logf("test #%d: got: %+v", index, typ)
|
|
t.Logf("test #%d: exp: %+v", index, exptyp)
|
|
failed = true
|
|
break
|
|
}
|
|
}
|
|
if failed {
|
|
return
|
|
}
|
|
})
|
|
}
|
|
}
|