mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-13 18:34:45 +00:00
521 lines
17 KiB
Go
521 lines
17 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package parse
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import (
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"flag"
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"fmt"
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"strings"
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"testing"
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)
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var debug = flag.Bool("debug", false, "show the errors produced by the main tests")
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type numberTest struct {
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text string
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isInt bool
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isUint bool
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isFloat bool
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isComplex bool
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int64
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uint64
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float64
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complex128
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}
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var numberTests = []numberTest{
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// basics
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{"0", true, true, true, false, 0, 0, 0, 0},
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{"-0", true, true, true, false, 0, 0, 0, 0}, // check that -0 is a uint.
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{"73", true, true, true, false, 73, 73, 73, 0},
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{"073", true, true, true, false, 073, 073, 073, 0},
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{"0x73", true, true, true, false, 0x73, 0x73, 0x73, 0},
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{"-73", true, false, true, false, -73, 0, -73, 0},
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{"+73", true, false, true, false, 73, 0, 73, 0},
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{"100", true, true, true, false, 100, 100, 100, 0},
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{"1e9", true, true, true, false, 1e9, 1e9, 1e9, 0},
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{"-1e9", true, false, true, false, -1e9, 0, -1e9, 0},
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{"-1.2", false, false, true, false, 0, 0, -1.2, 0},
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{"1e19", false, true, true, false, 0, 1e19, 1e19, 0},
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{"-1e19", false, false, true, false, 0, 0, -1e19, 0},
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{"4i", false, false, false, true, 0, 0, 0, 4i},
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{"-1.2+4.2i", false, false, false, true, 0, 0, 0, -1.2 + 4.2i},
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{"073i", false, false, false, true, 0, 0, 0, 73i}, // not octal!
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// complex with 0 imaginary are float (and maybe integer)
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{"0i", true, true, true, true, 0, 0, 0, 0},
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{"-1.2+0i", false, false, true, true, 0, 0, -1.2, -1.2},
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{"-12+0i", true, false, true, true, -12, 0, -12, -12},
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{"13+0i", true, true, true, true, 13, 13, 13, 13},
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// funny bases
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{"0123", true, true, true, false, 0123, 0123, 0123, 0},
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{"-0x0", true, true, true, false, 0, 0, 0, 0},
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{"0xdeadbeef", true, true, true, false, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0},
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// character constants
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{`'a'`, true, true, true, false, 'a', 'a', 'a', 0},
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{`'\n'`, true, true, true, false, '\n', '\n', '\n', 0},
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{`'\\'`, true, true, true, false, '\\', '\\', '\\', 0},
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{`'\''`, true, true, true, false, '\'', '\'', '\'', 0},
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{`'\xFF'`, true, true, true, false, 0xFF, 0xFF, 0xFF, 0},
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{`'パ'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0},
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{`'\u30d1'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0},
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{`'\U000030d1'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0},
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// some broken syntax
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{text: "+-2"},
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{text: "0x123."},
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{text: "1e."},
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{text: "0xi."},
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{text: "1+2."},
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{text: "'x"},
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{text: "'xx'"},
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{text: "'433937734937734969526500969526500'"}, // Integer too large - issue 10634.
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// Issue 8622 - 0xe parsed as floating point. Very embarrassing.
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{"0xef", true, true, true, false, 0xef, 0xef, 0xef, 0},
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}
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func TestNumberParse(t *testing.T) {
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for _, test := range numberTests {
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// If fmt.Sscan thinks it's complex, it's complex. We can't trust the output
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// because imaginary comes out as a number.
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var c complex128
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typ := itemNumber
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var tree *Tree
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if test.text[0] == '\'' {
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typ = itemCharConstant
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} else {
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_, err := fmt.Sscan(test.text, &c)
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if err == nil {
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typ = itemComplex
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}
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}
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n, err := tree.newNumber(0, test.text, typ)
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ok := test.isInt || test.isUint || test.isFloat || test.isComplex
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if ok && err != nil {
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t.Errorf("unexpected error for %q: %s", test.text, err)
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continue
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}
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if !ok && err == nil {
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t.Errorf("expected error for %q", test.text)
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continue
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}
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if !ok {
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if *debug {
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fmt.Printf("%s\n\t%s\n", test.text, err)
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}
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continue
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}
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if n.IsComplex != test.isComplex {
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t.Errorf("complex incorrect for %q; should be %t", test.text, test.isComplex)
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}
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if test.isInt {
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if !n.IsInt {
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t.Errorf("expected integer for %q", test.text)
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}
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if n.Int64 != test.int64 {
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t.Errorf("int64 for %q should be %d Is %d", test.text, test.int64, n.Int64)
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}
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} else if n.IsInt {
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t.Errorf("did not expect integer for %q", test.text)
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}
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if test.isUint {
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if !n.IsUint {
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t.Errorf("expected unsigned integer for %q", test.text)
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}
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if n.Uint64 != test.uint64 {
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t.Errorf("uint64 for %q should be %d Is %d", test.text, test.uint64, n.Uint64)
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}
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} else if n.IsUint {
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t.Errorf("did not expect unsigned integer for %q", test.text)
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}
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if test.isFloat {
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if !n.IsFloat {
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t.Errorf("expected float for %q", test.text)
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}
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if n.Float64 != test.float64 {
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t.Errorf("float64 for %q should be %g Is %g", test.text, test.float64, n.Float64)
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}
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} else if n.IsFloat {
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t.Errorf("did not expect float for %q", test.text)
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}
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if test.isComplex {
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if !n.IsComplex {
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t.Errorf("expected complex for %q", test.text)
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}
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if n.Complex128 != test.complex128 {
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t.Errorf("complex128 for %q should be %g Is %g", test.text, test.complex128, n.Complex128)
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}
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} else if n.IsComplex {
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t.Errorf("did not expect complex for %q", test.text)
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}
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}
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}
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type parseTest struct {
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name string
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input string
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ok bool
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result string // what the user would see in an error message.
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}
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const (
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noError = true
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hasError = false
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)
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var parseTests = []parseTest{
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{"empty", "", noError,
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``},
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{"comment", "{{/*\n\n\n*/}}", noError,
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``},
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{"spaces", " \t\n", noError,
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`" \t\n"`},
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{"text", "some text", noError,
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`"some text"`},
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{"emptyAction", "{{}}", hasError,
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`{{}}`},
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{"field", "{{.X}}", noError,
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`{{.X}}`},
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{"simple command", "{{printf}}", noError,
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`{{printf}}`},
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{"$ invocation", "{{$}}", noError,
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"{{$}}"},
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{"variable invocation", "{{with $x := 3}}{{$x 23}}{{end}}", noError,
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"{{with $x := 3}}{{$x 23}}{{end}}"},
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{"variable with fields", "{{$.I}}", noError,
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"{{$.I}}"},
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{"multi-word command", "{{printf `%d` 23}}", noError,
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"{{printf `%d` 23}}"},
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{"pipeline", "{{.X|.Y}}", noError,
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`{{.X | .Y}}`},
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{"pipeline with decl", "{{$x := .X|.Y}}", noError,
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`{{$x := .X | .Y}}`},
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{"nested pipeline", "{{.X (.Y .Z) (.A | .B .C) (.E)}}", noError,
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`{{.X (.Y .Z) (.A | .B .C) (.E)}}`},
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{"field applied to parentheses", "{{(.Y .Z).Field}}", noError,
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`{{(.Y .Z).Field}}`},
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{"simple if", "{{if .X}}hello{{end}}", noError,
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`{{if .X}}"hello"{{end}}`},
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{"if with else", "{{if .X}}true{{else}}false{{end}}", noError,
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`{{if .X}}"true"{{else}}"false"{{end}}`},
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{"if with else if", "{{if .X}}true{{else if .Y}}false{{end}}", noError,
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`{{if .X}}"true"{{else}}{{if .Y}}"false"{{end}}{{end}}`},
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{"if else chain", "+{{if .X}}X{{else if .Y}}Y{{else if .Z}}Z{{end}}+", noError,
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`"+"{{if .X}}"X"{{else}}{{if .Y}}"Y"{{else}}{{if .Z}}"Z"{{end}}{{end}}{{end}}"+"`},
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{"simple range", "{{range .X}}hello{{end}}", noError,
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`{{range .X}}"hello"{{end}}`},
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{"chained field range", "{{range .X.Y.Z}}hello{{end}}", noError,
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`{{range .X.Y.Z}}"hello"{{end}}`},
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{"nested range", "{{range .X}}hello{{range .Y}}goodbye{{end}}{{end}}", noError,
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`{{range .X}}"hello"{{range .Y}}"goodbye"{{end}}{{end}}`},
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{"range with else", "{{range .X}}true{{else}}false{{end}}", noError,
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`{{range .X}}"true"{{else}}"false"{{end}}`},
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{"range over pipeline", "{{range .X|.M}}true{{else}}false{{end}}", noError,
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`{{range .X | .M}}"true"{{else}}"false"{{end}}`},
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{"range []int", "{{range .SI}}{{.}}{{end}}", noError,
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`{{range .SI}}{{.}}{{end}}`},
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{"range 1 var", "{{range $x := .SI}}{{.}}{{end}}", noError,
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`{{range $x := .SI}}{{.}}{{end}}`},
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{"range 2 vars", "{{range $x, $y := .SI}}{{.}}{{end}}", noError,
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`{{range $x, $y := .SI}}{{.}}{{end}}`},
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{"constants", "{{range .SI 1 -3.2i true false 'a' nil}}{{end}}", noError,
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`{{range .SI 1 -3.2i true false 'a' nil}}{{end}}`},
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{"template", "{{template `x`}}", noError,
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`{{template "x"}}`},
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{"template with arg", "{{template `x` .Y}}", noError,
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`{{template "x" .Y}}`},
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{"with", "{{with .X}}hello{{end}}", noError,
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`{{with .X}}"hello"{{end}}`},
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{"with with else", "{{with .X}}hello{{else}}goodbye{{end}}", noError,
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`{{with .X}}"hello"{{else}}"goodbye"{{end}}`},
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// Trimming spaces.
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{"trim left", "x \r\n\t{{- 3}}", noError, `"x"{{3}}`},
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{"trim right", "{{3 -}}\n\n\ty", noError, `{{3}}"y"`},
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{"trim left and right", "x \r\n\t{{- 3 -}}\n\n\ty", noError, `"x"{{3}}"y"`},
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{"comment trim left", "x \r\n\t{{- /* hi */}}", noError, `"x"`},
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{"comment trim right", "{{/* hi */ -}}\n\n\ty", noError, `"y"`},
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{"comment trim left and right", "x \r\n\t{{- /* */ -}}\n\n\ty", noError, `"x""y"`},
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{"block definition", `{{block "foo" .}}hello{{end}}`, noError,
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`{{template "foo" .}}`},
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// Errors.
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{"unclosed action", "hello{{range", hasError, ""},
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{"unmatched end", "{{end}}", hasError, ""},
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{"unmatched else", "{{else}}", hasError, ""},
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{"unmatched else after if", "{{if .X}}hello{{end}}{{else}}", hasError, ""},
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{"multiple else", "{{if .X}}1{{else}}2{{else}}3{{end}}", hasError, ""},
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{"missing end", "hello{{range .x}}", hasError, ""},
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{"missing end after else", "hello{{range .x}}{{else}}", hasError, ""},
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{"undefined function", "hello{{undefined}}", hasError, ""},
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{"undefined variable", "{{$x}}", hasError, ""},
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{"variable undefined after end", "{{with $x := 4}}{{end}}{{$x}}", hasError, ""},
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{"variable undefined in template", "{{template $v}}", hasError, ""},
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{"declare with field", "{{with $x.Y := 4}}{{end}}", hasError, ""},
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{"template with field ref", "{{template .X}}", hasError, ""},
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{"template with var", "{{template $v}}", hasError, ""},
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{"invalid punctuation", "{{printf 3, 4}}", hasError, ""},
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{"multidecl outside range", "{{with $v, $u := 3}}{{end}}", hasError, ""},
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{"too many decls in range", "{{range $u, $v, $w := 3}}{{end}}", hasError, ""},
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{"dot applied to parentheses", "{{printf (printf .).}}", hasError, ""},
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{"adjacent args", "{{printf 3`x`}}", hasError, ""},
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{"adjacent args with .", "{{printf `x`.}}", hasError, ""},
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{"extra end after if", "{{if .X}}a{{else if .Y}}b{{end}}{{end}}", hasError, ""},
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// Equals (and other chars) do not assignments make (yet).
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{"bug0a", "{{$x := 0}}{{$x}}", noError, "{{$x := 0}}{{$x}}"},
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{"bug0b", "{{$x = 1}}{{$x}}", hasError, ""},
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{"bug0c", "{{$x ! 2}}{{$x}}", hasError, ""},
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{"bug0d", "{{$x % 3}}{{$x}}", hasError, ""},
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// Check the parse fails for := rather than comma.
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{"bug0e", "{{range $x := $y := 3}}{{end}}", hasError, ""},
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// Another bug: variable read must ignore following punctuation.
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{"bug1a", "{{$x:=.}}{{$x!2}}", hasError, ""}, // ! is just illegal here.
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{"bug1b", "{{$x:=.}}{{$x+2}}", hasError, ""}, // $x+2 should not parse as ($x) (+2).
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{"bug1c", "{{$x:=.}}{{$x +2}}", noError, "{{$x := .}}{{$x +2}}"}, // It's OK with a space.
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// dot following a literal value
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{"dot after integer", "{{1.E}}", hasError, ""},
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{"dot after float", "{{0.1.E}}", hasError, ""},
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{"dot after boolean", "{{true.E}}", hasError, ""},
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{"dot after char", "{{'a'.any}}", hasError, ""},
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{"dot after string", `{{"hello".guys}}`, hasError, ""},
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{"dot after dot", "{{..E}}", hasError, ""},
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{"dot after nil", "{{nil.E}}", hasError, ""},
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// Wrong pipeline
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{"wrong pipeline dot", "{{12|.}}", hasError, ""},
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{"wrong pipeline number", "{{.|12|printf}}", hasError, ""},
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{"wrong pipeline string", "{{.|printf|\"error\"}}", hasError, ""},
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{"wrong pipeline char", "{{12|printf|'e'}}", hasError, ""},
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{"wrong pipeline boolean", "{{.|true}}", hasError, ""},
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{"wrong pipeline nil", "{{'c'|nil}}", hasError, ""},
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{"empty pipeline", `{{printf "%d" ( ) }}`, hasError, ""},
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// Missing pipeline in block
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{"block definition", `{{block "foo"}}hello{{end}}`, hasError, ""},
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}
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var builtins = map[string]interface{}{
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"printf": fmt.Sprintf,
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}
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func testParse(doCopy bool, t *testing.T) {
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textFormat = "%q"
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defer func() { textFormat = "%s" }()
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for _, test := range parseTests {
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tmpl, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree), builtins)
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switch {
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case err == nil && !test.ok:
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t.Errorf("%q: expected error; got none", test.name)
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continue
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case err != nil && test.ok:
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t.Errorf("%q: unexpected error: %v", test.name, err)
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continue
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case err != nil && !test.ok:
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// expected error, got one
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if *debug {
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fmt.Printf("%s: %s\n\t%s\n", test.name, test.input, err)
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}
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continue
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}
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var result string
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if doCopy {
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result = tmpl.Root.Copy().String()
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} else {
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result = tmpl.Root.String()
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}
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if result != test.result {
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t.Errorf("%s=(%q): got\n\t%v\nexpected\n\t%v", test.name, test.input, result, test.result)
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}
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}
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}
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func TestParse(t *testing.T) {
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testParse(false, t)
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}
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// Same as TestParse, but we copy the node first
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func TestParseCopy(t *testing.T) {
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testParse(true, t)
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}
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type isEmptyTest struct {
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name string
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input string
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empty bool
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}
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var isEmptyTests = []isEmptyTest{
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{"empty", ``, true},
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{"nonempty", `hello`, false},
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{"spaces only", " \t\n \t\n", true},
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{"definition", `{{define "x"}}something{{end}}`, true},
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{"definitions and space", "{{define `x`}}something{{end}}\n\n{{define `y`}}something{{end}}\n\n", true},
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{"definitions and text", "{{define `x`}}something{{end}}\nx\n{{define `y`}}something{{end}}\ny\n", false},
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{"definition and action", "{{define `x`}}something{{end}}{{if 3}}foo{{end}}", false},
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}
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func TestIsEmpty(t *testing.T) {
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if !IsEmptyTree(nil) {
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t.Errorf("nil tree is not empty")
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}
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for _, test := range isEmptyTests {
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tree, err := New("root").Parse(test.input, "", "", make(map[string]*Tree), nil)
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if err != nil {
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t.Errorf("%q: unexpected error: %v", test.name, err)
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continue
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}
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if empty := IsEmptyTree(tree.Root); empty != test.empty {
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t.Errorf("%q: expected %t got %t", test.name, test.empty, empty)
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}
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}
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}
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func TestErrorContextWithTreeCopy(t *testing.T) {
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tree, err := New("root").Parse("{{if true}}{{end}}", "", "", make(map[string]*Tree), nil)
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if err != nil {
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t.Fatalf("unexpected tree parse failure: %v", err)
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}
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treeCopy := tree.Copy()
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wantLocation, wantContext := tree.ErrorContext(tree.Root.Nodes[0])
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gotLocation, gotContext := treeCopy.ErrorContext(treeCopy.Root.Nodes[0])
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if wantLocation != gotLocation {
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t.Errorf("wrong error location want %q got %q", wantLocation, gotLocation)
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}
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if wantContext != gotContext {
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t.Errorf("wrong error location want %q got %q", wantContext, gotContext)
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}
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}
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// All failures, and the result is a string that must appear in the error message.
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var errorTests = []parseTest{
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// Check line numbers are accurate.
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{"unclosed1",
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"line1\n{{",
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hasError, `unclosed1:2: unexpected unclosed action in command`},
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{"unclosed2",
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"line1\n{{define `x`}}line2\n{{",
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hasError, `unclosed2:3: unexpected unclosed action in command`},
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// Specific errors.
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{"function",
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"{{foo}}",
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|
hasError, `function "foo" not defined`},
|
|
{"comment",
|
|
"{{/*}}",
|
|
hasError, `unclosed comment`},
|
|
{"lparen",
|
|
"{{.X (1 2 3}}",
|
|
hasError, `unclosed left paren`},
|
|
{"rparen",
|
|
"{{.X 1 2 3)}}",
|
|
hasError, `unexpected ")"`},
|
|
{"space",
|
|
"{{`x`3}}",
|
|
hasError, `in operand`},
|
|
{"idchar",
|
|
"{{a#}}",
|
|
hasError, `'#'`},
|
|
{"charconst",
|
|
"{{'a}}",
|
|
hasError, `unterminated character constant`},
|
|
{"stringconst",
|
|
`{{"a}}`,
|
|
hasError, `unterminated quoted string`},
|
|
{"rawstringconst",
|
|
"{{`a}}",
|
|
hasError, `unterminated raw quoted string`},
|
|
{"number",
|
|
"{{0xi}}",
|
|
hasError, `number syntax`},
|
|
{"multidefine",
|
|
"{{define `a`}}a{{end}}{{define `a`}}b{{end}}",
|
|
hasError, `multiple definition of template`},
|
|
{"eof",
|
|
"{{range .X}}",
|
|
hasError, `unexpected EOF`},
|
|
{"variable",
|
|
// Declare $x so it's defined, to avoid that error, and then check we don't parse a declaration.
|
|
"{{$x := 23}}{{with $x.y := 3}}{{$x 23}}{{end}}",
|
|
hasError, `unexpected ":="`},
|
|
{"multidecl",
|
|
"{{$a,$b,$c := 23}}",
|
|
hasError, `too many declarations`},
|
|
{"undefvar",
|
|
"{{$a}}",
|
|
hasError, `undefined variable`},
|
|
{"wrongdot",
|
|
"{{true.any}}",
|
|
hasError, `unexpected . after term`},
|
|
{"wrongpipeline",
|
|
"{{12|false}}",
|
|
hasError, `non executable command in pipeline`},
|
|
{"emptypipeline",
|
|
`{{ ( ) }}`,
|
|
hasError, `missing value for parenthesized pipeline`},
|
|
}
|
|
|
|
func TestErrors(t *testing.T) {
|
|
for _, test := range errorTests {
|
|
_, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree))
|
|
if err == nil {
|
|
t.Errorf("%q: expected error", test.name)
|
|
continue
|
|
}
|
|
if !strings.Contains(err.Error(), test.result) {
|
|
t.Errorf("%q: error %q does not contain %q", test.name, err, test.result)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBlock(t *testing.T) {
|
|
const (
|
|
input = `a{{block "inner" .}}bar{{.}}baz{{end}}b`
|
|
outer = `a{{template "inner" .}}b`
|
|
inner = `bar{{.}}baz`
|
|
)
|
|
treeSet := make(map[string]*Tree)
|
|
tmpl, err := New("outer").Parse(input, "", "", treeSet, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if g, w := tmpl.Root.String(), outer; g != w {
|
|
t.Errorf("outer template = %q, want %q", g, w)
|
|
}
|
|
inTmpl := treeSet["inner"]
|
|
if inTmpl == nil {
|
|
t.Fatal("block did not define template")
|
|
}
|
|
if g, w := inTmpl.Root.String(), inner; g != w {
|
|
t.Errorf("inner template = %q, want %q", g, w)
|
|
}
|
|
}
|
|
|
|
func TestLineNum(t *testing.T) {
|
|
const count = 100
|
|
text := strings.Repeat("{{printf 1234}}\n", count)
|
|
tree, err := New("bench").Parse(text, "", "", make(map[string]*Tree), builtins)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// Check the line numbers. Each line is an action containing a template, followed by text.
|
|
// That's two nodes per line.
|
|
nodes := tree.Root.Nodes
|
|
for i := 0; i < len(nodes); i += 2 {
|
|
line := 1 + i/2
|
|
// Action first.
|
|
action := nodes[i].(*ActionNode)
|
|
if action.Line != line {
|
|
t.Fatalf("line %d: action is line %d", line, action.Line)
|
|
}
|
|
pipe := action.Pipe
|
|
if pipe.Line != line {
|
|
t.Fatalf("line %d: pipe is line %d", line, pipe.Line)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkParseLarge(b *testing.B) {
|
|
text := strings.Repeat("{{1234}}\n", 10000)
|
|
for i := 0; i < b.N; i++ {
|
|
_, err := New("bench").Parse(text, "", "", make(map[string]*Tree), builtins)
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
}
|
|
}
|