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/**
* @file NCDConfigParser.c
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <misc/debug.h>
#include <base/BLog.h>
#include <ncd/NCDConfigTokenizer.h>
#include "ncd/NCDConfigParser.h"
#include <generated/blog_channel_NCDConfigParser.h>
#include "../generated/NCDConfigParser_parse.c"
#include "../generated/NCDConfigParser_parse.h"
struct parser_state {
struct parser_out out;
int error;
void *parser;
};
static int tokenizer_output (void *user, int token, char *value, size_t value_len, size_t line, size_t line_char)
{
struct parser_state *state = user;
ASSERT(!state->out.out_of_memory)
ASSERT(!state->out.syntax_error)
ASSERT(!state->error)
if (token == NCD_ERROR) {
BLog(BLOG_ERROR, "line %zu, character %zu: tokenizer error", line, line_char);
state->error = 1;
return 0;
}
struct token minor;
minor.str = value;
minor.len = value_len;
switch (token) {
case NCD_EOF: {
Parse(state->parser, 0, minor, &state->out);
} break;
case NCD_TOKEN_CURLY_OPEN: {
Parse(state->parser, CURLY_OPEN, minor, &state->out);
} break;
case NCD_TOKEN_CURLY_CLOSE: {
Parse(state->parser, CURLY_CLOSE, minor, &state->out);
} break;
case NCD_TOKEN_ROUND_OPEN: {
Parse(state->parser, ROUND_OPEN, minor, &state->out);
} break;
case NCD_TOKEN_ROUND_CLOSE: {
Parse(state->parser, ROUND_CLOSE, minor, &state->out);
} break;
case NCD_TOKEN_SEMICOLON: {
Parse(state->parser, SEMICOLON, minor, &state->out);
} break;
case NCD_TOKEN_DOT: {
Parse(state->parser, DOT, minor, &state->out);
} break;
case NCD_TOKEN_COMMA: {
Parse(state->parser, COMMA, minor, &state->out);
} break;
case NCD_TOKEN_ARROW: {
Parse(state->parser, ARROW, minor, &state->out);
} break;
case NCD_TOKEN_PROCESS: {
Parse(state->parser, PROCESS, minor, &state->out);
} break;
case NCD_TOKEN_TEMPLATE: {
Parse(state->parser, TEMPLATE, minor, &state->out);
} break;
case NCD_TOKEN_NAME: {
Parse(state->parser, NAME, minor, &state->out);
} break;
case NCD_TOKEN_STRING: {
Parse(state->parser, STRING, minor, &state->out);
} break;
case NCD_TOKEN_COLON: {
Parse(state->parser, COLON, minor, &state->out);
} break;
case NCD_TOKEN_BRACKET_OPEN: {
Parse(state->parser, BRACKET_OPEN, minor, &state->out);
} break;
case NCD_TOKEN_BRACKET_CLOSE: {
Parse(state->parser, BRACKET_CLOSE, minor, &state->out);
} break;
case NCD_TOKEN_IF: {
Parse(state->parser, IF, minor, &state->out);
} break;
case NCD_TOKEN_ELIF: {
Parse(state->parser, ELIF, minor, &state->out);
} break;
case NCD_TOKEN_ELSE: {
Parse(state->parser, ELSE, minor, &state->out);
} break;
case NCD_TOKEN_FOREACH: {
Parse(state->parser, FOREACH, minor, &state->out);
} break;
case NCD_TOKEN_AS: {
Parse(state->parser, AS, minor, &state->out);
} break;
case NCD_TOKEN_INCLUDE: {
Parse(state->parser, INCLUDE, minor, &state->out);
} break;
case NCD_TOKEN_INCLUDE_GUARD: {
Parse(state->parser, INCLUDE_GUARD, minor, &state->out);
} break;
case NCD_TOKEN_AT: {
Parse(state->parser, AT_SIGN, minor, &state->out);
} break;
case NCD_TOKEN_BLOCK: {
Parse(state->parser, BLOCK, minor, &state->out);
} break;
case NCD_TOKEN_CARET: {
Parse(state->parser, CARET, minor, &state->out);
} break;
case NCD_TOKEN_DO: {
Parse(state->parser, TOKEN_DO, minor, &state->out);
} break;
case NCD_TOKEN_INTERRUPT: {
Parse(state->parser, TOKEN_INTERRUPT, minor, &state->out);
} break;
default:
BLog(BLOG_ERROR, "line %zu, character %zu: invalid token", line, line_char);
free(minor.str);
state->error = 1;
return 0;
}
// if we got syntax error, stop parsing
if (state->out.syntax_error) {
BLog(BLOG_ERROR, "line %zu, character %zu: syntax error", line, line_char);
state->error = 1;
return 0;
}
if (state->out.out_of_memory) {
BLog(BLOG_ERROR, "line %zu, character %zu: out of memory", line, line_char);
state->error = 1;
return 0;
}
return 1;
}
int NCDConfigParser_Parse (char *config, size_t config_len, NCDProgram *out_ast)
{
struct parser_state state;
state.out.out_of_memory = 0;
state.out.syntax_error = 0;
state.out.have_ast = 0;
state.error = 0;
if (!(state.parser = ParseAlloc(malloc))) {
BLog(BLOG_ERROR, "ParseAlloc failed");
return 0;
}
// tokenize and parse
NCDConfigTokenizer_Tokenize(MemRef_Make(config, config_len), tokenizer_output, &state);
ParseFree(state.parser, free);
if (state.error) {
if (state.out.have_ast) {
NCDProgram_Free(&state.out.ast);
}
return 0;
}
ASSERT(state.out.have_ast)
*out_ast = state.out.ast;
return 1;
}