mirror of
https://github.com/jbeder/yaml-cpp.git
synced 2025-09-09 20:51:16 +00:00
Set the eol style to native for all files.
This commit is contained in:
Jesse Beder
266
src/parser.cpp
266
src/parser.cpp
@@ -1,133 +1,133 @@
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#include "crt.h"
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#include "parser.h"
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#include "scanner.h"
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#include "token.h"
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#include "exceptions.h"
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#include <sstream>
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namespace YAML
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{
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Parser::Parser(std::istream& in): m_pScanner(0)
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{
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Load(in);
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}
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Parser::~Parser()
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{
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delete m_pScanner;
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}
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Parser::operator bool() const
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{
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return !m_pScanner->empty();
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}
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void Parser::Load(std::istream& in)
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{
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delete m_pScanner;
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m_pScanner = new Scanner(in);
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m_state.Reset();
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}
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// GetNextDocument
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// . Reads the next document in the queue (of tokens).
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// . Throws a ParserException on error.
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void Parser::GetNextDocument(Node& document)
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{
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// clear node
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document.Clear();
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// first read directives
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ParseDirectives();
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// we better have some tokens in the queue
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if(m_pScanner->empty())
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return;
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// first eat doc start (optional)
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if(m_pScanner->peek().type == TT_DOC_START)
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m_pScanner->pop();
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// now parse our root node
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document.Parse(m_pScanner, m_state);
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// and finally eat any doc ends we see
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while(!m_pScanner->empty() && m_pScanner->peek().type == TT_DOC_END)
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m_pScanner->pop();
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}
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// ParseDirectives
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// . Reads any directives that are next in the queue.
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void Parser::ParseDirectives()
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{
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bool readDirective = false;
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while(1) {
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if(m_pScanner->empty())
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break;
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Token& token = m_pScanner->peek();
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if(token.type != TT_DIRECTIVE)
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break;
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// we keep the directives from the last document if none are specified;
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// but if any directives are specific, then we reset them
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if(!readDirective)
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m_state.Reset();
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readDirective = true;
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HandleDirective(&token);
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m_pScanner->pop();
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}
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}
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void Parser::HandleDirective(Token *pToken)
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{
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if(pToken->value == "YAML")
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HandleYamlDirective(pToken);
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else if(pToken->value == "TAG")
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HandleTagDirective(pToken);
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}
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// HandleYamlDirective
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// . Should be of the form 'major.minor' (like a version number)
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void Parser::HandleYamlDirective(Token *pToken)
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{
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if(pToken->params.size() != 1)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::YAML_DIRECTIVE_ARGS);
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std::stringstream str(pToken->params[0]);
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str >> m_state.version.major;
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str.get();
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str >> m_state.version.minor;
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if(!str || str.peek() != EOF)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::YAML_VERSION + pToken->params[0]);
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if(m_state.version.major > 1)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::YAML_MAJOR_VERSION);
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// TODO: warning on major == 1, minor > 2?
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}
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// HandleTagDirective
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// . Should be of the form 'handle prefix', where 'handle' is converted to 'prefix' in the file.
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void Parser::HandleTagDirective(Token *pToken)
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{
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if(pToken->params.size() != 2)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::TAG_DIRECTIVE_ARGS);
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std::string handle = pToken->params[0], prefix = pToken->params[1];
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m_state.tags[handle] = prefix;
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}
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void Parser::PrintTokens(std::ostream& out)
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{
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while(1) {
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if(m_pScanner->empty())
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break;
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out << m_pScanner->peek() << "\n";
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m_pScanner->pop();
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}
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}
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}
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#include "crt.h"
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#include "parser.h"
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#include "scanner.h"
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#include "token.h"
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#include "exceptions.h"
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#include <sstream>
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namespace YAML
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{
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Parser::Parser(std::istream& in): m_pScanner(0)
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{
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Load(in);
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}
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Parser::~Parser()
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{
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delete m_pScanner;
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}
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Parser::operator bool() const
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{
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return !m_pScanner->empty();
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}
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void Parser::Load(std::istream& in)
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{
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delete m_pScanner;
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m_pScanner = new Scanner(in);
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m_state.Reset();
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}
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// GetNextDocument
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// . Reads the next document in the queue (of tokens).
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// . Throws a ParserException on error.
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void Parser::GetNextDocument(Node& document)
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{
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// clear node
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document.Clear();
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// first read directives
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ParseDirectives();
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// we better have some tokens in the queue
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if(m_pScanner->empty())
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return;
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// first eat doc start (optional)
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if(m_pScanner->peek().type == TT_DOC_START)
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m_pScanner->pop();
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// now parse our root node
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document.Parse(m_pScanner, m_state);
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// and finally eat any doc ends we see
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while(!m_pScanner->empty() && m_pScanner->peek().type == TT_DOC_END)
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m_pScanner->pop();
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}
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// ParseDirectives
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// . Reads any directives that are next in the queue.
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void Parser::ParseDirectives()
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{
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bool readDirective = false;
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while(1) {
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if(m_pScanner->empty())
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break;
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Token& token = m_pScanner->peek();
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if(token.type != TT_DIRECTIVE)
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break;
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// we keep the directives from the last document if none are specified;
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// but if any directives are specific, then we reset them
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if(!readDirective)
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m_state.Reset();
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readDirective = true;
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HandleDirective(&token);
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m_pScanner->pop();
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}
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}
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void Parser::HandleDirective(Token *pToken)
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{
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if(pToken->value == "YAML")
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HandleYamlDirective(pToken);
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else if(pToken->value == "TAG")
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HandleTagDirective(pToken);
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}
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// HandleYamlDirective
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// . Should be of the form 'major.minor' (like a version number)
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void Parser::HandleYamlDirective(Token *pToken)
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{
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if(pToken->params.size() != 1)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::YAML_DIRECTIVE_ARGS);
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std::stringstream str(pToken->params[0]);
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str >> m_state.version.major;
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str.get();
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str >> m_state.version.minor;
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if(!str || str.peek() != EOF)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::YAML_VERSION + pToken->params[0]);
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if(m_state.version.major > 1)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::YAML_MAJOR_VERSION);
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// TODO: warning on major == 1, minor > 2?
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}
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// HandleTagDirective
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// . Should be of the form 'handle prefix', where 'handle' is converted to 'prefix' in the file.
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void Parser::HandleTagDirective(Token *pToken)
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{
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if(pToken->params.size() != 2)
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throw ParserException(pToken->line, pToken->column, ErrorMsg::TAG_DIRECTIVE_ARGS);
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std::string handle = pToken->params[0], prefix = pToken->params[1];
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m_state.tags[handle] = prefix;
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}
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void Parser::PrintTokens(std::ostream& out)
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{
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while(1) {
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if(m_pScanner->empty())
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break;
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out << m_pScanner->peek() << "\n";
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m_pScanner->pop();
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}
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}
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}
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