235 lines
10 KiB
Plaintext
235 lines
10 KiB
Plaintext
/* Copyright 2021 xensik. All rights reserved.
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//
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// Use of this source code is governed by a GNU GPLv3 license
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// that can be found in the LICENSE file.
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*/
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%option outfile="lexer.cpp"
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%option header-file="lexer.hpp"
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%option prefix="h2_"
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%option reentrant
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%option noyywrap batch nounput noinput
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%option never-interactive
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%option nounistd
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%top{
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#include "stdafx.hpp"
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#include "h2.hpp"
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#include "parser.hpp"
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using namespace xsk::gsc;
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void h2_push_header(xsk::gsc::context* ctx, const std::string& file);
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void h2_pop_header(xsk::gsc::context* ctx);
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}
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%{
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#define YY_USER_ACTION ctx->loc.columns(yyleng);
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%}
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RGX_PATH ([_A-Za-z0-9]+\\)+[_A-Za-z0-9]+
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RGX_IDENTIFIER [_A-Za-z][_A-Za-z0-9]*
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RGX_STRING \"(?:\\.|[^\"])*?\"|\'(?:\\.|[^\'])*?\'
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RGX_COLOR #([0-9a-fA-F]{6}|[0-9a-fA-F]{3})
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RGX_FLT_DEC [0-9]+\.(?:[0-9]*)?f?|\.[0-9]+f?
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RGX_INT_OCT 0[1-7][0-7]*
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RGX_INT_BIN 0[bB][01]+
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RGX_INT_HEX 0[xX][0-9a-fA-F]+
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RGX_INT_DEC [0-9]+
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RGX_DEFAULT (.|\n)
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%x COMMENT_BLOCK_STATE
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%s DEVBLOCK_ON_STATE
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%x DEVBLOCK_OFF_STATE
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%%
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%{
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ctx->loc.step();
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%}
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[ \t\r] { ctx->loc.step(); }
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\n { ctx->loc.lines(yyleng); ctx->loc.step(); }
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"//".*
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"/*" { BEGIN(COMMENT_BLOCK_STATE); }
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<COMMENT_BLOCK_STATE>.
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<COMMENT_BLOCK_STATE>\n { ctx->loc.lines(yyleng); ctx->loc.step(); }
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<COMMENT_BLOCK_STATE>"*/" { BEGIN(INITIAL); }
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"/#" { BEGIN(ctx->mode == xsk::gsc::build::dev ? DEVBLOCK_ON_STATE : DEVBLOCK_OFF_STATE); }
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<DEVBLOCK_OFF_STATE>.
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<DEVBLOCK_OFF_STATE>\n { ctx->loc.lines(yyleng); ctx->loc.step(); }
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<DEVBLOCK_OFF_STATE,DEVBLOCK_ON_STATE>"#/" { BEGIN(INITIAL); }
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<INITIAL>"*/" { throw h2::parser::syntax_error(ctx->loc, "unmatched multiline comment end ('*/')"); }
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<INITIAL>"#/" { throw h2::parser::syntax_error(ctx->loc, "unmatched devblock end ('#/')"); }
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"#inline" { return h2::parser::make_INLINE(ctx->loc); }
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"#include" { return h2::parser::make_INCLUDE(ctx->loc); }
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"#using_animtree" { return h2::parser::make_USINGTREE(ctx->loc); }
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"#animtree" { return h2::parser::make_ANIMTREE(ctx->loc); }
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"endon" { return h2::parser::make_ENDON(ctx->loc); }
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"notify" { return h2::parser::make_NOTIFY(ctx->loc); }
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"wait" { return h2::parser::make_WAIT(ctx->loc); }
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"waittill" { return h2::parser::make_WAITTILL(ctx->loc); }
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"waittillmatch" { return h2::parser::make_WAITTILLMATCH(ctx->loc); }
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"waittillframeend" { return h2::parser::make_WAITTILLFRAMEEND(ctx->loc); }
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"waitframe" { return h2::parser::make_WAITFRAME(ctx->loc); }
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"if" { return h2::parser::make_IF(ctx->loc); }
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"else" { return h2::parser::make_ELSE(ctx->loc); }
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"do" { return h2::parser::make_DO(ctx->loc); }
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"while" { return h2::parser::make_WHILE(ctx->loc); }
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"for" { return h2::parser::make_FOR(ctx->loc); }
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"foreach" { return h2::parser::make_FOREACH(ctx->loc); }
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"in" { return h2::parser::make_IN(ctx->loc); }
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"switch" { return h2::parser::make_SWITCH(ctx->loc); }
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"case" { return h2::parser::make_CASE(ctx->loc); }
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"default" { return h2::parser::make_DEFAULT(ctx->loc); }
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"break" { return h2::parser::make_BREAK(ctx->loc); }
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"continue" { return h2::parser::make_CONTINUE(ctx->loc); }
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"return" { return h2::parser::make_RETURN(ctx->loc); }
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"breakpoint" { return h2::parser::make_BREAKPOINT(ctx->loc); }
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"prof_begin" { return h2::parser::make_PROFBEGIN(ctx->loc); }
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"prof_end" { return h2::parser::make_PROFEND(ctx->loc); }
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"thread" { return h2::parser::make_THREAD(ctx->loc); }
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"childthread" { return h2::parser::make_CHILDTHREAD(ctx->loc); }
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"thisthread" { return h2::parser::make_THISTHREAD(ctx->loc); }
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"call" { return h2::parser::make_CALL(ctx->loc); }
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"true" { return h2::parser::make_TRUE(ctx->loc); }
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"false" { return h2::parser::make_FALSE(ctx->loc); }
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"undefined" { return h2::parser::make_UNDEFINED(ctx->loc); }
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".size" { return h2::parser::make_SIZE(ctx->loc); }
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"game" { return h2::parser::make_GAME(ctx->loc); }
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"self" { return h2::parser::make_SELF(ctx->loc); }
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"anim" { return h2::parser::make_ANIM(ctx->loc); }
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"level" { return h2::parser::make_LEVEL(ctx->loc); }
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\( { return h2::parser::make_LPAREN(ctx->loc); }
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\) { return h2::parser::make_RPAREN(ctx->loc); }
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\{ { return h2::parser::make_LBRACE(ctx->loc); }
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\} { return h2::parser::make_RBRACE(ctx->loc); }
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\[ { return h2::parser::make_LBRACKET(ctx->loc); }
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\] { return h2::parser::make_RBRACKET(ctx->loc); }
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\, { return h2::parser::make_COMMA(ctx->loc); }
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\. { return h2::parser::make_DOT(ctx->loc); }
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\:\: { return h2::parser::make_DOUBLECOLON(ctx->loc); }
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\: { return h2::parser::make_COLON(ctx->loc); }
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\; { return h2::parser::make_SEMICOLON(ctx->loc); }
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\? { return h2::parser::make_QMARK(ctx->loc); }
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\+\+ { return h2::parser::make_INCREMENT(ctx->loc); }
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\-\- { return h2::parser::make_DECREMENT(ctx->loc); }
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\<\<\= { return h2::parser::make_ASSIGN_LSHIFT(ctx->loc); }
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\>\>\= { return h2::parser::make_ASSIGN_RSHIFT(ctx->loc); }
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\<\< { return h2::parser::make_LSHIFT(ctx->loc); }
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\>\> { return h2::parser::make_RSHIFT(ctx->loc); }
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\|\| { return h2::parser::make_OR(ctx->loc); }
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\&\& { return h2::parser::make_AND(ctx->loc); }
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\=\= { return h2::parser::make_EQUALITY(ctx->loc); }
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\!\= { return h2::parser::make_INEQUALITY(ctx->loc); }
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\<\= { return h2::parser::make_LESS_EQUAL(ctx->loc); }
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\>\= { return h2::parser::make_GREATER_EQUAL(ctx->loc); }
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\< { return h2::parser::make_LESS(ctx->loc); }
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\> { return h2::parser::make_GREATER(ctx->loc); }
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\+\= { return h2::parser::make_ASSIGN_ADD(ctx->loc); }
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\-\= { return h2::parser::make_ASSIGN_SUB(ctx->loc); }
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\*\= { return h2::parser::make_ASSIGN_MUL(ctx->loc); }
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\/\= { return h2::parser::make_ASSIGN_DIV(ctx->loc); }
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\%\= { return h2::parser::make_ASSIGN_MOD(ctx->loc); }
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\|\= { return h2::parser::make_ASSIGN_BW_OR(ctx->loc); }
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\&\= { return h2::parser::make_ASSIGN_BW_AND(ctx->loc); }
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\^\= { return h2::parser::make_ASSIGN_BW_EXOR(ctx->loc); }
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\= { return h2::parser::make_ASSIGN(ctx->loc); }
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\+ { return h2::parser::make_ADD(ctx->loc); }
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\- { return h2::parser::make_SUB(ctx->loc); }
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\* { return h2::parser::make_MUL(ctx->loc); }
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\/ { return h2::parser::make_DIV(ctx->loc); }
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\% { return h2::parser::make_MOD(ctx->loc); }
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\! { return h2::parser::make_NOT(ctx->loc); }
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\~ { return h2::parser::make_COMPLEMENT(ctx->loc); }
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\| { return h2::parser::make_BITWISE_OR(ctx->loc); }
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\& { return h2::parser::make_BITWISE_AND(ctx->loc); }
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\^ { return h2::parser::make_BITWISE_EXOR(ctx->loc); }
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{RGX_PATH} { return h2::parser::make_PATH(xsk::utils::string::fordslash(yytext), ctx->loc); }
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{RGX_IDENTIFIER} { return h2::parser::make_IDENTIFIER((std::string(yytext, 3) == "_ID") ? std::string(yytext) : xsk::utils::string::to_lower(yytext), ctx->loc); }
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\&{RGX_STRING} { return h2::parser::make_ISTRING(std::string(yytext).substr(1), ctx->loc); }
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{RGX_STRING} { return h2::parser::make_STRING(std::string(yytext), ctx->loc); }
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{RGX_COLOR} { return h2::parser::make_COLOR(std::string(yytext).substr(1), ctx->loc); }
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{RGX_FLT_DEC} { return h2::parser::make_FLOAT(std::string(yytext), ctx->loc); }
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{RGX_INT_OCT} { return h2::parser::make_INT_OCT(xsk::utils::string::oct_to_dec(yytext), ctx->loc); }
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{RGX_INT_BIN} { return h2::parser::make_INT_BIN(xsk::utils::string::bin_to_dec(yytext), ctx->loc); }
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{RGX_INT_HEX} { return h2::parser::make_INT_HEX(xsk::utils::string::hex_to_dec(yytext), ctx->loc); }
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{RGX_INT_DEC} { return h2::parser::make_INT_DEC(std::string(yytext), ctx->loc); }
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<<EOF>> { if(ctx->header_top > 0) h2_pop_header(ctx); else return h2::parser::make_H2EOF(ctx->loc); }
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<*>{RGX_DEFAULT} { throw h2::parser::syntax_error(ctx->loc, "bad token: \'" + std::string(yytext) + "\'"); }
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%%
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void h2_push_header(xsk::gsc::context* ctx, const std::string& file)
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{
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try
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{
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if (ctx->header_top >= 4)
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{
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throw xsk::gsc::error("maximum gsh depth exceeded '4'");
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}
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ctx->header_top++;
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char* buf_data = 0;
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size_t buf_size = 0;
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for (auto& src : *ctx->sources)
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{
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if (src.name == file)
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{
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buf_data = reinterpret_cast<char*>(src.buf.data());
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buf_size = src.buf.size();
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ctx->locs.push(ctx->loc);
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ctx->loc.initialize(&src.name);
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}
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}
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if (buf_data == 0)
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{
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ctx->sources->push_back(xsk::gsc::source());
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auto& source = ctx->sources->back();
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source.name = file;
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source.buf = ctx->read_callback(file + ".gsh");
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source.buf.push_back(0);
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source.buf.push_back(0);
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buf_data = reinterpret_cast<char*>(source.buf.data());
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buf_size = source.buf.size();
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ctx->locs.push(ctx->loc);
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ctx->loc.initialize(&source.name);
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}
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auto state = new yy_buffer_state();
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state->yy_buf_size = buf_size - 2;
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state->yy_buf_pos = state->yy_ch_buf = buf_data;
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state->yy_is_our_buffer = 0;
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state->yy_input_file = NULL;
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state->yy_n_chars = state->yy_buf_size;
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state->yy_is_interactive = 0;
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state->yy_at_bol = 1;
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state->yy_fill_buffer = 0;
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state->yy_buffer_status = 0;
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yypush_buffer_state(state, ctx->scanner);
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}
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catch (const std::exception& e)
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{
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throw xsk::gsc::error("parsing header file '" + file + "': " + e.what());
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}
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}
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void h2_pop_header(xsk::gsc::context* ctx)
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{
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ctx->header_top--;
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ctx->loc = ctx->locs.top();
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ctx->locs.pop();
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yypop_buffer_state(ctx->scanner);
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}
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