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