Documentation
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Index ¶
Constants ¶
const ( // Special tokens ILLEGAL Token = iota EOF COMMENT // Identifiers and basic type literals // (these tokens stand for classes of literals) IDENT // main INT // 12345 FLOAT // 123.45 IMAG // 123.45i CHAR // 'a' STRING // "abc" RAT // 3r, 3.4r UNIT // 1m, 2.3s, 3ms, 4us, 5ns, 6.5m, 7h, 8d, 9w, 10y ADD = '+' SUB = '-' MUL = '*' QUO = '/' REM = '%' AND = '&' OR = '|' XOR = '^' LT = '<' GT = '>' ASSIGN = '=' NOT = '!' LPAREN = '(' LBRACK = '[' LBRACE = '{' COMMA = ',' PERIOD = '.' RPAREN = ')' RBRACK = ']' RBRACE = '}' SEMICOLON = ';' COLON = ':' QUESTION = '?' TILDE = '~' AT = '@' ENV = '$' )
const (
Break = -1
)
const ( // NoPos - The zero value for Pos is NoPos; there is no file and line // information associated with it, and NoPos.IsValid() is false. NoPos // is always smaller than any other Pos value. The corresponding // Position value for NoPos is the zero value for Position. NoPos = token.NoPos )
Variables ¶
This section is empty.
Functions ¶
Types ¶
type File ¶
A File is a handle for a file belonging to a FileSet. A File has a name, size, and line offset table.
type FileSet ¶
A FileSet represents a set of source files. Methods of file sets are synchronized; multiple goroutines may invoke them concurrently.
type Pos ¶
Pos is a compact encoding of a source position within a file set. It can be converted into a Position for a more convenient, but much larger, representation.
The Pos value for a given file is a number in the range [base, base+size], where base and size are specified when adding the file to the file set via AddFile.
To create the Pos value for a specific source offset (measured in bytes), first add the respective file to the current file set using FileSet.AddFile and then call File.Pos(offset) for that file. Given a Pos value p for a specific file set fset, the corresponding Position value is obtained by calling fset.Position(p).
Pos values can be compared directly with the usual comparison operators: If two Pos values p and q are in the same file, comparing p and q is equivalent to comparing the respective source file offsets. If p and q are in different files, p < q is true if the file implied by p was added to the respective file set before the file implied by q.
type Position ¶
Position describes an arbitrary source position including the file, line, and column location. A Position is valid if the line number is > 0.
type Token ¶
type Token uint
const ( SHL Token // << SHR // >> AND_NOT // &^ ADD_ASSIGN // += SUB_ASSIGN // -= MUL_ASSIGN // *= QUO_ASSIGN // /= REM_ASSIGN // %= AND_ASSIGN // &= OR_ASSIGN // |= XOR_ASSIGN // ^= SHL_ASSIGN // <<= SHR_ASSIGN // >>= AND_NOT_ASSIGN // &^= LAND // && LOR // || ARROW // <- INC // ++ DEC // -- EQ // == NE // != LE // <= GE // >= DEFINE // := ELLIPSIS // ... DRARROW // => SRARROW // -> BIDIARROW // <> POW // ** )
Source Files