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-rw-r--r--compiler/lexer_test.go514
1 files changed, 0 insertions, 514 deletions
diff --git a/compiler/lexer_test.go b/compiler/lexer_test.go
deleted file mode 100644
index 51eb82e..0000000
--- a/compiler/lexer_test.go
+++ /dev/null
@@ -1,514 +0,0 @@
-package compiler
-
-import (
- "strings"
- "testing"
-)
-
-func TestLexer(t *testing.T) {
- tests := []struct {
- caption string
- src string
- tokens []*token
- err error
- }{
- {
- caption: "lexer can recognize ordinaly characters",
- src: "123abcいろは",
- tokens: []*token{
- newToken(tokenKindChar, '1'),
- newToken(tokenKindChar, '2'),
- newToken(tokenKindChar, '3'),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindChar, 'b'),
- newToken(tokenKindChar, 'c'),
- newToken(tokenKindChar, 'い'),
- newToken(tokenKindChar, 'ろ'),
- newToken(tokenKindChar, 'は'),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "lexer can recognize the special characters in default mode",
- src: ".*+?|()[\\u",
- tokens: []*token{
- newToken(tokenKindAnyChar, nullChar),
- newToken(tokenKindRepeat, nullChar),
- newToken(tokenKindRepeatOneOrMore, nullChar),
- newToken(tokenKindOption, nullChar),
- newToken(tokenKindAlt, nullChar),
- newToken(tokenKindGroupOpen, nullChar),
- newToken(tokenKindGroupClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "lexer can recognize the escape sequences in default mode",
- src: "\\\\\\.\\*\\+\\?\\|\\(\\)\\[",
- tokens: []*token{
- newToken(tokenKindChar, '\\'),
- newToken(tokenKindChar, '.'),
- newToken(tokenKindChar, '*'),
- newToken(tokenKindChar, '+'),
- newToken(tokenKindChar, '?'),
- newToken(tokenKindChar, '|'),
- newToken(tokenKindChar, '('),
- newToken(tokenKindChar, ')'),
- newToken(tokenKindChar, '['),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "], {, and } are treated as an ordinary character in default mode",
- src: "]{}",
- tokens: []*token{
- newToken(tokenKindChar, ']'),
- newToken(tokenKindChar, '{'),
- newToken(tokenKindChar, '}'),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "lexer can recognize the special characters in bracket expression mode",
- src: "[a-z\\u{09AF}][^a-z\\u{09abcf}]",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindCharRange, nullChar),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("09AF"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindCharRange, nullChar),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("09abcf"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "lexer can recognize the escape sequences in bracket expression mode",
- src: "[\\^a\\-z]",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '^'),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "in a bracket expression, the special characters are also handled as normal characters",
- src: "[\\\\.*+?|()[",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '\\'),
- newToken(tokenKindChar, '.'),
- newToken(tokenKindChar, '*'),
- newToken(tokenKindChar, '+'),
- newToken(tokenKindChar, '?'),
- newToken(tokenKindChar, '|'),
- newToken(tokenKindChar, '('),
- newToken(tokenKindChar, ')'),
- newToken(tokenKindChar, '['),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "hyphen symbols that appear in bracket expressions are handled as the character range symbol or ordinary characters",
- // [...-...][...-][-...][-]
- // ~~~~~~~ ~ ~ ~
- // ^ ^ ^ ^
- // | | | `-- Ordinary Character (b)
- // | | `-- Ordinary Character (b)
- // | `-- Ordinary Character (b)
- // `-- Character Range (a)
- //
- // a. *-* is handled as a character range expression.
- // b. *-, -*, or - are handled as ordinary characters.
- src: "[a-z][a-][-z][-][--][---][^a-z][^a-][^-z][^-][^--][^---]",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindCharRange, nullChar),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindCharRange, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
-
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindCharRange, nullChar),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, 'a'),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindChar, 'z'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindCharRange, nullChar),
- newToken(tokenKindChar, '-'),
- newToken(tokenKindBExpClose, nullChar),
-
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "caret symbols that appear in bracket expressions are handled as the logical inverse symbol or ordinary characters",
- // [^...^...][^]
- // ~~ ~ ~~
- // ^ ^ ^^
- // | | |`-- Ordinary Character (c)
- // | | `-- Bracket Expression
- // | `-- Ordinary Character (b)
- // `-- Inverse Bracket Expression (a)
- //
- // a. Bracket expressions that have a caret symbol at the beginning are handled as logical inverse expressions.
- // b. caret symbols that appear as the second and the subsequent symbols are handled as ordinary symbols.
- // c. When a bracket expression has just one symbol, a caret symbol at the beginning is handled as an ordinary character.
- src: "[^^][^]",
- tokens: []*token{
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindChar, '^'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindChar, '^'),
- newToken(tokenKindBExpClose, nullChar),
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "lexer raises an error when an invalid escape sequence appears",
- src: "\\@",
- err: synErrInvalidEscSeq,
- },
- {
- caption: "lexer raises an error when the incomplete escape sequence (EOF following \\) appears",
- src: "\\",
- err: synErrIncompletedEscSeq,
- },
- {
- caption: "lexer raises an error when an invalid escape sequence appears",
- src: "[\\@",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- },
- err: synErrInvalidEscSeq,
- },
- {
- caption: "lexer raises an error when the incomplete escape sequence (EOF following \\) appears",
- src: "[\\",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- },
- err: synErrIncompletedEscSeq,
- },
- {
- caption: "lexer can recognize the special characters and code points in code point expression mode",
- src: "\\u{0123}\\u{4567}\\u{89abcd}\\u{efAB}\\u{CDEF01}[\\u{0123}\\u{4567}\\u{89abcd}\\u{efAB}\\u{CDEF01}][^\\u{0123}\\u{4567}\\u{89abcd}\\u{efAB}\\u{CDEF01}]",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("0123"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("4567"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("89abcd"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("efAB"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("CDEF01"),
- newToken(tokenKindRBrace, nullChar),
-
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("0123"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("4567"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("89abcd"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("efAB"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("CDEF01"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindBExpClose, nullChar),
-
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("0123"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("4567"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("89abcd"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("efAB"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("CDEF01"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindBExpClose, nullChar),
-
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "a one digit hex string isn't a valid code point",
- src: "\\u{0",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "a two digits hex string isn't a valid code point",
- src: "\\u{01",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "a three digits hex string isn't a valid code point",
- src: "\\u{012",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "a four digits hex string is a valid code point",
- src: "\\u{0123}",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("0123"),
- newToken(tokenKindRBrace, nullChar),
- },
- },
- {
- caption: "a five digits hex string isn't a valid code point",
- src: "\\u{01234",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "a six digits hex string is a valid code point",
- src: "\\u{012345}",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCodePointToken("012345"),
- newToken(tokenKindRBrace, nullChar),
- },
- },
- {
- caption: "a seven digits hex string isn't a valid code point",
- src: "\\u{0123456",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "a code point must be hex digits",
- src: "\\u{g",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "a code point must be hex digits",
- src: "\\u{G",
- tokens: []*token{
- newToken(tokenKindCodePointLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- },
- err: synErrInvalidCodePoint,
- },
- {
- caption: "lexer can recognize the special characters and symbols in character property expression mode",
- src: "\\p{Letter}\\p{General_Category=Letter}[\\p{Letter}\\p{General_Category=Letter}][^\\p{Letter}\\p{General_Category=Letter}]",
- tokens: []*token{
- newToken(tokenKindCharPropLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCharPropSymbolToken("Letter"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCharPropLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCharPropSymbolToken("General_Category"),
- newToken(tokenKindEqual, nullChar),
- newCharPropSymbolToken("Letter"),
- newToken(tokenKindRBrace, nullChar),
-
- newToken(tokenKindBExpOpen, nullChar),
- newToken(tokenKindCharPropLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCharPropSymbolToken("Letter"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCharPropLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCharPropSymbolToken("General_Category"),
- newToken(tokenKindEqual, nullChar),
- newCharPropSymbolToken("Letter"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindBExpClose, nullChar),
-
- newToken(tokenKindInverseBExpOpen, nullChar),
- newToken(tokenKindCharPropLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCharPropSymbolToken("Letter"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindCharPropLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newCharPropSymbolToken("General_Category"),
- newToken(tokenKindEqual, nullChar),
- newCharPropSymbolToken("Letter"),
- newToken(tokenKindRBrace, nullChar),
- newToken(tokenKindBExpClose, nullChar),
-
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "lexer can recognize the special characters and symbols in fragment expression mode",
- src: "\\f{integer}",
- tokens: []*token{
- newToken(tokenKindFragmentLeader, nullChar),
- newToken(tokenKindLBrace, nullChar),
- newFragmentSymbolToken("integer"),
- newToken(tokenKindRBrace, nullChar),
-
- newToken(tokenKindEOF, nullChar),
- },
- },
- {
- caption: "a fragment expression is not supported in a bracket expression",
- src: "[\\f",
- tokens: []*token{
- newToken(tokenKindBExpOpen, nullChar),
- },
- err: synErrInvalidEscSeq,
- },
- {
- caption: "a fragment expression is not supported in an inverse bracket expression",
- src: "[^\\f",
- tokens: []*token{
- newToken(tokenKindInverseBExpOpen, nullChar),
- },
- err: synErrInvalidEscSeq,
- },
- }
- for _, tt := range tests {
- t.Run(tt.caption, func(t *testing.T) {
- lex := newLexer(strings.NewReader(tt.src))
- var err error
- var tok *token
- i := 0
- for {
- tok, err = lex.next()
- if err != nil {
- break
- }
- if i >= len(tt.tokens) {
- break
- }
- eTok := tt.tokens[i]
- i++
- testToken(t, tok, eTok)
-
- if tok.kind == tokenKindEOF {
- break
- }
- }
- if err != tt.err {
- t.Fatalf("unexpected error; want: %v, got: %v (%v)", tt.err, err, lex.errMsgDetails)
- }
- if i < len(tt.tokens) {
- t.Fatalf("expecte more tokens")
- }
- })
- }
-}
-
-func testToken(t *testing.T, a, e *token) {
- t.Helper()
- if e.kind != a.kind || e.char != a.char || e.codePoint != a.codePoint {
- t.Fatalf("unexpected token; want: %+v, got: %+v", e, a)
- }
-}
generated by cgit v1.2.3 (git 2.49.0) at 2025-07-12 20:57:11 +0000