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/*
* Copyright (C) 2020-2021 Jo-Philipp Wich <jo@mein.io>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __LEXER_H_
#define __LEXER_H_
#include "source.h"
#include "types.h"
typedef enum {
TK_LEXP = 1,
TK_REXP,
TK_LSTM,
TK_RSTM,
TK_IF,
TK_ELSE,
TK_COMMA,
TK_ASSIGN,
TK_ASADD,
TK_ASSUB,
TK_ASMUL,
TK_ASDIV,
TK_ASMOD,
TK_ASLEFT,
TK_ASRIGHT,
TK_ASBAND,
TK_ASBXOR,
TK_ASBOR,
TK_QMARK,
TK_COLON,
TK_OR,
TK_AND,
TK_BOR,
TK_BXOR,
TK_BAND,
TK_EQS,
TK_NES,
TK_EQ,
TK_NE,
TK_LT,
TK_LE,
TK_GT,
TK_GE,
TK_IN,
TK_LSHIFT,
TK_RSHIFT,
TK_ADD,
TK_SUB,
TK_MUL,
TK_DIV,
TK_MOD,
TK_NOT,
TK_COMPL,
TK_INC,
TK_DEC,
TK_DOT,
TK_LBRACK,
TK_RBRACK,
TK_LPAREN,
TK_RPAREN,
TK_TEXT,
TK_LBRACE,
TK_RBRACE,
TK_SCOL,
TK_ENDIF,
TK_ELIF,
TK_WHILE,
TK_ENDWHILE,
TK_FOR,
TK_ENDFOR,
TK_FUNC,
TK_LABEL,
TK_ENDFUNC,
TK_TRY,
TK_CATCH,
TK_SWITCH,
TK_CASE,
TK_DEFAULT,
TK_ELLIP,
TK_RETURN,
TK_BREAK,
TK_CONTINUE,
TK_LOCAL,
TK_ARROW,
TK_TRUE,
TK_FALSE,
TK_NUMBER,
TK_DOUBLE,
TK_STRING,
TK_REGEXP,
TK_NULL,
TK_THIS,
TK_DELETE,
TK_CONST,
TK_EOF,
TK_ERROR
} uc_tokentype_t;
typedef enum {
UC_LEX_IDENTIFY_BLOCK,
UC_LEX_BLOCK_COMMENT_START,
UC_LEX_BLOCK_EXPRESSION_START,
UC_LEX_BLOCK_EXPRESSION_EMIT_TAG,
UC_LEX_BLOCK_STATEMENT_START,
UC_LEX_BLOCK_COMMENT,
UC_LEX_IDENTIFY_TOKEN,
UC_LEX_PARSE_TOKEN,
UC_LEX_EOF
} uc_lex_state_t;
typedef struct {
uc_tokentype_t type;
uc_value_t *uv;
size_t pos;
} uc_token;
typedef struct {
uc_lex_state_t state;
uc_parse_config *config;
uc_source *source;
uint8_t eof:1;
uint8_t is_escape:1;
uint8_t no_regexp:1;
uint8_t no_keyword:1;
size_t buflen;
char *buf, *bufstart, *bufend;
size_t lookbehindlen;
char *lookbehind;
const void *tok;
uc_token curr;
char esc[5];
uint8_t esclen;
int lead_surrogate;
size_t lastoff;
enum {
UNSPEC,
PLUS,
MINUS,
NEWLINE
} modifier;
enum {
NONE,
EXPRESSION = '{',
STATEMENTS = '%',
COMMENT = '#'
} block;
} uc_lexer;
void uc_lexer_init(uc_lexer *lex, uc_parse_config *config, uc_source *source);
void uc_lexer_free(uc_lexer *lex);
uc_token *uc_lexer_next_token(uc_lexer *lex);
bool utf8enc(char **out, int *rem, int code);
const char *
uc_get_tokenname(unsigned type);
#endif /* __LEXER_H_ */
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