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Add code for setting parse states’ corresponding lex states

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This commit is contained in:
Max Brunsfeld 2013-12-28 10:23:40 -08:00
parent a5e39d2512
commit 29a9b4643d
6 changed files with 33 additions and 36 deletions
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11
src/compiler/code_gen/c_code.cpp
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@ -116,12 +116,14 @@ namespace tree_sitter {
}
}
string switch_on_lookahead_sym(const ParseState &parse_state) {
string code_for_parse_state(const ParseState &parse_state) {
string body = "";
for (auto pair : parse_state.actions)
body += _case(symbol_id(pair.first), code_for_parse_actions(pair.second));
body += _default(code_for_parse_actions(parse_state.default_actions));
return _switch("LOOKAHEAD_SYM()", body);
return
string("SET_LEX_STATE(") + to_string(parse_state.lex_state_index) + ");\n" +
_switch("LOOKAHEAD_SYM()", body);
}
string switch_on_lookahead_char(const LexState &parse_state) {
@ -135,7 +137,7 @@ namespace tree_sitter {
string switch_on_parse_state() {
string body = "";
for (int i = 0; i < parse_table.states.size(); i++)
body += _case(std::to_string(i), switch_on_lookahead_sym(parse_table.states[i]));
body += _case(std::to_string(i), code_for_parse_state(parse_table.states[i]));
body += _default("PARSE_ERROR();");
return _switch("PARSE_STATE()", body);
}
@ -154,13 +156,12 @@ namespace tree_sitter {
result += indent(symbol_id(rule_name)) + ",\n";
result += indent(symbol_id(ParseTable::END_OF_INPUT));
return result + "\n"
"} ts_symbol;\n";
"} ts_symbol;";
}
string includes() {
return string(
"#include \"runtime.h\"\n"
"#include <stdlib.h>\n"
"#include <ctype.h>");
}