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author | Rob Pike <r@golang.org> | 2009-06-09 09:53:44 -0700 |
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committer | Rob Pike <r@golang.org> | 2009-06-09 09:53:44 -0700 |
commit | 7249ea4df2b4f12a4e7ed446f270cea87e4ffd34 (patch) | |
tree | 7032a11d0cac2ae4d3e90f7a189b575b5a50f848 /src/lib/go/scanner/scanner_test.go | |
parent | acf6ef7a82b3fe61516a1bac4563706552bdf078 (diff) | |
download | golang-7249ea4df2b4f12a4e7ed446f270cea87e4ffd34.tar.gz |
mv src/lib to src/pkg
tests: all.bash passes, gobuild still works, godoc still works.
R=rsc
OCL=30096
CL=30102
Diffstat (limited to 'src/lib/go/scanner/scanner_test.go')
-rw-r--r-- | src/lib/go/scanner/scanner_test.go | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/src/lib/go/scanner/scanner_test.go b/src/lib/go/scanner/scanner_test.go deleted file mode 100644 index 0defece8b..000000000 --- a/src/lib/go/scanner/scanner_test.go +++ /dev/null @@ -1,276 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package scanner - -import ( - "go/scanner"; - "go/token"; - "io"; - "testing"; -) - - -const /* class */ ( - special = iota; - literal; - operator; - keyword; -) - - -func tokenclass(tok token.Token) int { - switch { - case tok.IsLiteral(): return literal; - case tok.IsOperator(): return operator; - case tok.IsKeyword(): return keyword; - } - return special; -} - - -type elt struct { - tok token.Token; - lit string; - class int; -} - - -var tokens = [...]elt{ - // Special tokens - elt{ token.COMMENT, "/* a comment */", special }, - elt{ token.COMMENT, "// a comment \n", special }, - - // Identifiers and basic type literals - elt{ token.IDENT, "foobar", literal }, - elt{ token.IDENT, "a۰۱۸", literal }, - elt{ token.IDENT, "foo६४", literal }, - elt{ token.IDENT, "bar9876", literal }, - elt{ token.INT, "0", literal }, - elt{ token.INT, "01234567", literal }, - elt{ token.INT, "0xcafebabe", literal }, - elt{ token.FLOAT, "0.", literal }, - elt{ token.FLOAT, ".0", literal }, - elt{ token.FLOAT, "3.14159265", literal }, - elt{ token.FLOAT, "1e0", literal }, - elt{ token.FLOAT, "1e+100", literal }, - elt{ token.FLOAT, "1e-100", literal }, - elt{ token.FLOAT, "2.71828e-1000", literal }, - elt{ token.CHAR, "'a'", literal }, - elt{ token.CHAR, "'\\000'", literal }, - elt{ token.CHAR, "'\\xFF'", literal }, - elt{ token.CHAR, "'\\uff16'", literal }, - elt{ token.CHAR, "'\\U0000ff16'", literal }, - elt{ token.STRING, "`foobar`", literal }, - - // Operators and delimitors - elt{ token.ADD, "+", operator }, - elt{ token.SUB, "-", operator }, - elt{ token.MUL, "*", operator }, - elt{ token.QUO, "/", operator }, - elt{ token.REM, "%", operator }, - - elt{ token.AND, "&", operator }, - elt{ token.OR, "|", operator }, - elt{ token.XOR, "^", operator }, - elt{ token.SHL, "<<", operator }, - elt{ token.SHR, ">>", operator }, - elt{ token.AND_NOT, "&^", operator }, - - elt{ token.ADD_ASSIGN, "+=", operator }, - elt{ token.SUB_ASSIGN, "-=", operator }, - elt{ token.MUL_ASSIGN, "*=", operator }, - elt{ token.QUO_ASSIGN, "/=", operator }, - elt{ token.REM_ASSIGN, "%=", operator }, - - elt{ token.AND_ASSIGN, "&=", operator }, - elt{ token.OR_ASSIGN, "|=", operator }, - elt{ token.XOR_ASSIGN, "^=", operator }, - elt{ token.SHL_ASSIGN, "<<=", operator }, - elt{ token.SHR_ASSIGN, ">>=", operator }, - elt{ token.AND_NOT_ASSIGN, "&^=", operator }, - - elt{ token.LAND, "&&", operator }, - elt{ token.LOR, "||", operator }, - elt{ token.ARROW, "<-", operator }, - elt{ token.INC, "++", operator }, - elt{ token.DEC, "--", operator }, - - elt{ token.EQL, "==", operator }, - elt{ token.LSS, "<", operator }, - elt{ token.GTR, ">", operator }, - elt{ token.ASSIGN, "=", operator }, - elt{ token.NOT, "!", operator }, - - elt{ token.NEQ, "!=", operator }, - elt{ token.LEQ, "<=", operator }, - elt{ token.GEQ, ">=", operator }, - elt{ token.DEFINE, ":=", operator }, - elt{ token.ELLIPSIS, "...", operator }, - - elt{ token.LPAREN, "(", operator }, - elt{ token.LBRACK, "[", operator }, - elt{ token.LBRACE, "{", operator }, - elt{ token.COMMA, ",", operator }, - elt{ token.PERIOD, ".", operator }, - - elt{ token.RPAREN, ")", operator }, - elt{ token.RBRACK, "]", operator }, - elt{ token.RBRACE, "}", operator }, - elt{ token.SEMICOLON, ";", operator }, - elt{ token.COLON, ":", operator }, - - // Keywords - elt{ token.BREAK, "break", keyword }, - elt{ token.CASE, "case", keyword }, - elt{ token.CHAN, "chan", keyword }, - elt{ token.CONST, "const", keyword }, - elt{ token.CONTINUE, "continue", keyword }, - - elt{ token.DEFAULT, "default", keyword }, - elt{ token.DEFER, "defer", keyword }, - elt{ token.ELSE, "else", keyword }, - elt{ token.FALLTHROUGH, "fallthrough", keyword }, - elt{ token.FOR, "for", keyword }, - - elt{ token.FUNC, "func", keyword }, - elt{ token.GO, "go", keyword }, - elt{ token.GOTO, "goto", keyword }, - elt{ token.IF, "if", keyword }, - elt{ token.IMPORT, "import", keyword }, - - elt{ token.INTERFACE, "interface", keyword }, - elt{ token.MAP, "map", keyword }, - elt{ token.PACKAGE, "package", keyword }, - elt{ token.RANGE, "range", keyword }, - elt{ token.RETURN, "return", keyword }, - - elt{ token.SELECT, "select", keyword }, - elt{ token.STRUCT, "struct", keyword }, - elt{ token.SWITCH, "switch", keyword }, - elt{ token.TYPE, "type", keyword }, - elt{ token.VAR, "var", keyword }, -} - - -const whitespace = " \t \n\n\n"; // to separate tokens - -type TestErrorHandler struct { - t *testing.T -} - -func (h *TestErrorHandler) Error(pos token.Position, msg string) { - h.t.Errorf("Error() called (msg = %s)", msg); -} - - -func NewlineCount(s string) int { - n := 0; - for i := 0; i < len(s); i++ { - if s[i] == '\n' { - n++; - } - } - return n; -} - - -// Verify that calling Scan() provides the correct results. -func TestScan(t *testing.T) { - // make source - var src string; - for i, e := range tokens { - src += e.lit + whitespace; - } - whitespace_linecount := NewlineCount(whitespace); - - // verify scan - index := 0; - eloc := token.Position{0, 1, 1}; - nerrors := scanner.Tokenize(io.StringBytes(src), &TestErrorHandler{t}, scanner.ScanComments, - func (pos token.Position, tok token.Token, litb []byte) bool { - e := elt{token.EOF, "", special}; - if index < len(tokens) { - e = tokens[index]; - } - lit := string(litb); - if tok == token.EOF { - lit = "<EOF>"; - eloc.Column = 0; - } - if pos.Offset != eloc.Offset { - t.Errorf("bad position for %s: got %d, expected %d", lit, pos.Offset, eloc.Offset); - } - if pos.Line != eloc.Line { - t.Errorf("bad line for %s: got %d, expected %d", lit, pos.Line, eloc.Line); - } - if pos.Column!= eloc.Column { - t.Errorf("bad column for %s: got %d, expected %d", lit, pos.Column, eloc.Column); - } - if tok != e.tok { - t.Errorf("bad token for %s: got %s, expected %s", lit, tok.String(), e.tok.String()); - } - if e.tok.IsLiteral() && lit != e.lit { - t.Errorf("bad literal for %s: got %s, expected %s", lit, lit, e.lit); - } - if tokenclass(tok) != e.class { - t.Errorf("bad class for %s: got %d, expected %d", lit, tokenclass(tok), e.class); - } - eloc.Offset += len(lit) + len(whitespace); - eloc.Line += NewlineCount(lit) + whitespace_linecount; - index++; - return tok != token.EOF; - } - ); - if nerrors != 0 { - t.Errorf("found %d errors", nerrors); - } -} - - -// Verify that initializing the same scanner more then once works correctly. -func TestInit(t *testing.T) { - var s scanner.Scanner; - - // 1st init - s.Init(io.StringBytes("if true { }"), nil, 0); - s.Scan(); // if - s.Scan(); // true - pos, tok, lit := s.Scan(); // { - if tok != token.LBRACE { - t.Errorf("bad token: got %s, expected %s", tok.String(), token.LBRACE); - } - - // 2nd init - s.Init(io.StringBytes("go true { ]"), nil, 0); - pos, tok, lit = s.Scan(); // go - if tok != token.GO { - t.Errorf("bad token: got %s, expected %s", tok.String(), token.GO); - } - - if s.ErrorCount != 0 { - t.Errorf("found %d errors", s.ErrorCount); - } -} - - -func TestIllegalChars(t *testing.T) { - var s scanner.Scanner; - - const src = "*?*$*@*"; - s.Init(io.StringBytes(src), &TestErrorHandler{t}, scanner.AllowIllegalChars); - for offs, ch := range src { - pos, tok, lit := s.Scan(); - if pos.Offset != offs { - t.Errorf("bad position for %s: got %d, expected %d", string(lit), pos.Offset, offs); - } - if tok == token.ILLEGAL && string(lit) != string(ch) { - t.Errorf("bad token: got %s, expected %s", string(lit), string(ch)); - } - } - - if s.ErrorCount != 0 { - t.Errorf("found %d errors", s.ErrorCount); - } -} |