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/* |
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* Copyright (c) 2014-2016 Christian Schoenebeck and Andreas Persson |
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* |
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* http://www.linuxsampler.org |
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* |
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* This file is part of LinuxSampler and released under the same terms. |
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* See README file for details. |
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*/ |
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|
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/* Parser for NKSP real-time instrument script language. */ |
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|
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%{ |
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#define YYERROR_VERBOSE 1 |
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#include "parser_shared.h" |
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#include <string> |
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#include <map> |
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using namespace LinuxSampler; |
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|
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void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err); |
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void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt); |
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int InstrScript_tnamerr(char* yyres, const char* yystr); |
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int InstrScript_lex(YYSTYPE* lvalp, YYLTYPE* llocp, void* scanner); |
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#define scanner context->scanner |
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#define PARSE_ERR(loc,txt) yyerror(&loc, context, txt) |
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#define PARSE_WRN(loc,txt) InstrScript_warning(&loc, context, txt) |
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#define yytnamerr(res,str) InstrScript_tnamerr(res, str) |
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%} |
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|
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// generate reentrant safe parser |
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%pure-parser |
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%parse-param { LinuxSampler::ParserContext* context } |
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%lex-param { void* scanner } |
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// avoid symbol collision with other (i.e. future) auto generated (f)lex scanners |
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%name-prefix "InstrScript_" |
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%locations |
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%defines |
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%error-verbose |
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|
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%token <iValue> INTEGER "integer literal" |
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%token <sValue> STRING "string literal" |
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%token <sValue> IDENTIFIER "function name" |
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%token <sValue> VARIABLE "variable name" |
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%token ON "keyword 'on'" |
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%token END "keyword 'end'" |
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%token INIT "keyword 'init'" |
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%token NOTE "keyword 'note'" |
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%token RELEASE "keyword 'release'" |
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%token CONTROLLER "keyword 'controller'" |
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%token DECLARE "keyword 'declare'" |
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%token ASSIGNMENT "operator ':='" |
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%token CONST_ "keyword 'const'" |
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%token POLYPHONIC "keyword 'polyphonic'" |
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%token WHILE "keyword 'while'" |
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%token IF "keyword 'if'" |
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%token ELSE "keyword 'else'" |
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%token SELECT "keyword 'select'" |
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%token CASE "keyword 'case'" |
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%token TO "keyword 'to'" |
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%token OR "operator 'or'" |
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%token AND "operator 'and'" |
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%token NOT "operator 'not'" |
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%token BITWISE_OR "bitwise operator '.or.'" |
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%token BITWISE_AND "bitwise operator '.and.'" |
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%token BITWISE_NOT "bitwise operator '.not.'" |
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%token FUNCTION "keyword 'function'" |
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%token CALL "keyword 'call'" |
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%token MOD "operator 'mod'" |
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%token LE "operator '<='" |
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%token GE "operator '>='" |
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%token END_OF_FILE 0 "end of file" |
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|
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%type <nEventHandlers> script sections |
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%type <nEventHandler> section eventhandler |
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%type <nStatements> statements opt_statements userfunctioncall |
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%type <nStatement> statement assignment |
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%type <nFunctionCall> functioncall |
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%type <nArgs> args |
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%type <nExpression> arg expr logical_or_expr logical_and_expr bitwise_or_expr bitwise_and_expr rel_expr add_expr mul_expr unary_expr concat_expr |
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%type <nCaseBranch> caseclause |
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%type <nCaseBranches> caseclauses |
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|
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%start script |
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|
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%% |
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|
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script: |
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sections { |
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$$ = context->handlers = $1; |
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} |
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|
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sections: |
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section { |
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$$ = new EventHandlers(); |
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if ($1) $$->add($1); |
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} |
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| sections section { |
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$$ = $1; |
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if ($2) $$->add($2); |
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} |
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|
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section: |
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function_declaration { |
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$$ = EventHandlerRef(); |
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} |
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| eventhandler { |
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$$ = $1; |
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} |
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|
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eventhandler: |
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ON NOTE opt_statements END ON { |
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if (context->onNote) |
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PARSE_ERR(@2, "Redeclaration of 'note' event handler."); |
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context->onNote = new OnNote($3); |
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$$ = context->onNote; |
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} |
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| ON INIT opt_statements END ON { |
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if (context->onInit) |
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PARSE_ERR(@2, "Redeclaration of 'init' event handler."); |
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context->onInit = new OnInit($3); |
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$$ = context->onInit; |
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} |
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| ON RELEASE opt_statements END ON { |
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if (context->onRelease) |
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PARSE_ERR(@2, "Redeclaration of 'release' event handler."); |
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context->onRelease = new OnRelease($3); |
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$$ = context->onRelease; |
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} |
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| ON CONTROLLER opt_statements END ON { |
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if (context->onController) |
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PARSE_ERR(@2, "Redeclaration of 'controller' event handler."); |
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context->onController = new OnController($3); |
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$$ = context->onController; |
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} |
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|
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function_declaration: |
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FUNCTION IDENTIFIER opt_statements END FUNCTION { |
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const char* name = $2; |
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if (context->functionProvider->functionByName(name)) { |
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PARSE_ERR(@2, (String("There is already a built-in function with name '") + name + "'.").c_str()); |
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} else if (context->userFunctionByName(name)) { |
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PARSE_ERR(@2, (String("There is already a user defined function with name '") + name + "'.").c_str()); |
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} else { |
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context->userFnTable[name] = $3; |
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} |
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} |
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|
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opt_statements: |
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/* epsilon (empty argument) */ { |
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$$ = new Statements(); |
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} |
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| statements { |
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$$ = $1; |
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} |
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|
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statements: |
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statement { |
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$$ = new Statements(); |
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if ($1) { |
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if (!isNoOperation($1)) $$->add($1); // filter out NoOperation statements |
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} else |
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PARSE_WRN(@1, "Not a statement."); |
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} |
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| statements statement { |
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$$ = $1; |
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if ($2) { |
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if (!isNoOperation($2)) $$->add($2); // filter out NoOperation statements |
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} else |
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PARSE_WRN(@2, "Not a statement."); |
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} |
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|
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statement: |
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functioncall { |
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$$ = $1; |
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} |
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| userfunctioncall { |
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$$ = $1; |
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} |
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| DECLARE VARIABLE { |
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const char* name = $2; |
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//printf("declared var '%s'\n", name); |
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if (context->variableByName(name)) |
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PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
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if (name[0] == '@') { |
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context->vartable[name] = new StringVariable(context); |
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$$ = new NoOperation; |
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} else { |
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context->vartable[name] = new IntVariable(context); |
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$$ = new NoOperation; |
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} |
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} |
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| DECLARE POLYPHONIC VARIABLE { |
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const char* name = $3; |
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//printf("declared polyphonic var '%s'\n", name); |
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if (context->variableByName(name)) |
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PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str()); |
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if (name[0] != '$') { |
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PARSE_ERR(@3, "Polyphonic variables may only be declared as integers."); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else { |
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context->vartable[name] = new PolyphonicIntVariable(context); |
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$$ = new NoOperation; |
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} |
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} |
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| DECLARE VARIABLE ASSIGNMENT expr { |
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const char* name = $2; |
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//printf("declared assign var '%s'\n", name); |
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if (context->variableByName(name)) |
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PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
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if ($4->exprType() == STRING_EXPR) { |
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if (name[0] == '$') |
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PARSE_WRN(@2, (String("Variable '") + name + "' declared as integer, string expression assigned though.").c_str()); |
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StringExprRef expr = $4; |
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if (expr->isConstExpr()) { |
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const String s = expr->evalStr(); |
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StringVariableRef var = new StringVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, new StringLiteral(s)); |
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} else { |
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StringVariableRef var = new StringVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, expr); |
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} |
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} else { |
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if (name[0] == '@') |
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PARSE_WRN(@2, (String("Variable '") + name + "' declared as string, integer expression assigned though.").c_str()); |
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IntExprRef expr = $4; |
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if (expr->isConstExpr()) { |
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const int i = expr->evalInt(); |
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IntVariableRef var = new IntVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, new IntLiteral(i)); |
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} else { |
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IntVariableRef var = new IntVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, expr); |
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} |
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} |
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} |
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| DECLARE VARIABLE '[' expr ']' { |
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//printf("declare array without args\n"); |
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const char* name = $2; |
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if (!$4->isConstExpr()) { |
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PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else if ($4->exprType() != INT_EXPR) { |
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PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
248 |
} else if (context->variableByName(name)) { |
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PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
250 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else { |
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IntExprRef expr = $4; |
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int size = expr->evalInt(); |
254 |
if (size <= 0) { |
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PARSE_ERR(@4, (String("Array variable '") + name + "' declared with array size " + ToString(size) + ".").c_str()); |
256 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
257 |
} else { |
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context->vartable[name] = new IntArrayVariable(context, size); |
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$$ = new NoOperation; |
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} |
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} |
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} |
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| DECLARE VARIABLE '[' expr ']' ASSIGNMENT '(' args ')' { |
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const char* name = $2; |
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if (!$4->isConstExpr()) { |
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PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
267 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
268 |
} else if ($4->exprType() != INT_EXPR) { |
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PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
270 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
271 |
} else if (context->variableByName(name)) { |
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PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
273 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
274 |
} else { |
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IntExprRef sizeExpr = $4; |
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ArgsRef args = $8; |
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int size = sizeExpr->evalInt(); |
278 |
if (size <= 0) { |
279 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with positive array size.").c_str()); |
280 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
281 |
} else if (args->argsCount() > size) { |
282 |
PARSE_ERR(@8, (String("Variable '") + name + |
283 |
"' was declared with size " + ToString(size) + |
284 |
" but " + ToString(args->argsCount()) + |
285 |
" values were assigned." ).c_str()); |
286 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
287 |
} else { |
288 |
bool argsOK = true; |
289 |
for (int i = 0; i < args->argsCount(); ++i) { |
290 |
if (args->arg(i)->exprType() != INT_EXPR) { |
291 |
PARSE_ERR( |
292 |
@8, |
293 |
(String("Array variable '") + name + |
294 |
"' declared with invalid assignment values. Assigned element " + |
295 |
ToString(i+1) + " is not an integer expression.").c_str() |
296 |
); |
297 |
argsOK = false; |
298 |
break; |
299 |
} |
300 |
} |
301 |
if (argsOK) |
302 |
$$ = context->vartable[name] = new IntArrayVariable(context, size, args); |
303 |
else |
304 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
305 |
} |
306 |
} |
307 |
} |
308 |
| DECLARE CONST_ VARIABLE ASSIGNMENT expr { |
309 |
const char* name = $3; |
310 |
if ($5->exprType() == STRING_EXPR) { |
311 |
if (name[0] == '$') |
312 |
PARSE_WRN(@5, "Variable declared as integer, string expression assigned though."); |
313 |
String s; |
314 |
StringExprRef expr = $5; |
315 |
if (expr->isConstExpr()) |
316 |
s = expr->evalStr(); |
317 |
else |
318 |
PARSE_ERR(@5, (String("Assignment to const string variable '") + name + "' requires const expression.").c_str()); |
319 |
ConstStringVariableRef var = new ConstStringVariable(context, s); |
320 |
context->vartable[name] = var; |
321 |
//$$ = new Assignment(var, new StringLiteral(s)); |
322 |
$$ = new NoOperation(); |
323 |
} else { |
324 |
if (name[0] == '@') |
325 |
PARSE_WRN(@5, "Variable declared as string, integer expression assigned though."); |
326 |
int i = 0; |
327 |
IntExprRef expr = $5; |
328 |
if (expr->isConstExpr()) |
329 |
i = expr->evalInt(); |
330 |
else |
331 |
PARSE_ERR(@5, (String("Assignment to const integer variable '") + name + "' requires const expression.").c_str()); |
332 |
ConstIntVariableRef var = new ConstIntVariable(i); |
333 |
context->vartable[name] = var; |
334 |
//$$ = new Assignment(var, new IntLiteral(i)); |
335 |
$$ = new NoOperation(); |
336 |
} |
337 |
} |
338 |
| assignment { |
339 |
$$ = $1; |
340 |
} |
341 |
| WHILE '(' expr ')' opt_statements END WHILE { |
342 |
if ($3->exprType() == INT_EXPR) { |
343 |
$$ = new While($3, $5); |
344 |
} else { |
345 |
PARSE_ERR(@3, "Condition for 'while' loops must be integer expression."); |
346 |
$$ = new While(new IntLiteral(0), $5); |
347 |
} |
348 |
} |
349 |
| IF '(' expr ')' opt_statements ELSE opt_statements END IF { |
350 |
$$ = new If($3, $5, $7); |
351 |
} |
352 |
| IF '(' expr ')' opt_statements END IF { |
353 |
$$ = new If($3, $5); |
354 |
} |
355 |
| SELECT expr caseclauses END SELECT { |
356 |
if ($2->exprType() == INT_EXPR) { |
357 |
$$ = new SelectCase($2, $3); |
358 |
} else { |
359 |
PARSE_ERR(@2, "Statement 'select' can only by applied to integer expressions."); |
360 |
$$ = new SelectCase(new IntLiteral(0), $3); |
361 |
} |
362 |
} |
363 |
|
364 |
caseclauses: |
365 |
caseclause { |
366 |
$$ = CaseBranches(); |
367 |
$$.push_back($1); |
368 |
} |
369 |
| caseclauses caseclause { |
370 |
$$ = $1; |
371 |
$$.push_back($2); |
372 |
} |
373 |
|
374 |
caseclause: |
375 |
CASE INTEGER opt_statements { |
376 |
$$ = CaseBranch(); |
377 |
$$.from = new IntLiteral($2); |
378 |
$$.statements = $3; |
379 |
} |
380 |
| CASE INTEGER TO INTEGER opt_statements { |
381 |
$$ = CaseBranch(); |
382 |
$$.from = new IntLiteral($2); |
383 |
$$.to = new IntLiteral($4); |
384 |
$$.statements = $5; |
385 |
} |
386 |
|
387 |
userfunctioncall: |
388 |
CALL IDENTIFIER { |
389 |
const char* name = $2; |
390 |
StatementsRef fn = context->userFunctionByName(name); |
391 |
if (context->functionProvider->functionByName(name)) { |
392 |
PARSE_ERR(@1, (String("Keyword 'call' must only be used for user defined functions, not for any built-in function like '") + name + "'.").c_str()); |
393 |
$$ = StatementsRef(); |
394 |
} else if (!fn) { |
395 |
PARSE_ERR(@2, (String("No user defined function with name '") + name + "'.").c_str()); |
396 |
$$ = StatementsRef(); |
397 |
} else { |
398 |
$$ = fn; |
399 |
} |
400 |
} |
401 |
|
402 |
functioncall: |
403 |
IDENTIFIER '(' args ')' { |
404 |
const char* name = $1; |
405 |
//printf("function call of '%s' with args\n", name); |
406 |
ArgsRef args = $3; |
407 |
VMFunction* fn = context->functionProvider->functionByName(name); |
408 |
if (context->userFunctionByName(name)) { |
409 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
410 |
$$ = new FunctionCall(name, args, NULL); |
411 |
} else if (!fn) { |
412 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
413 |
$$ = new FunctionCall(name, args, NULL); |
414 |
} else if (args->argsCount() < fn->minRequiredArgs()) { |
415 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
416 |
$$ = new FunctionCall(name, args, NULL); |
417 |
} else if (args->argsCount() > fn->maxAllowedArgs()) { |
418 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' accepts max. " + ToString(fn->maxAllowedArgs()) + " arguments.").c_str()); |
419 |
$$ = new FunctionCall(name, args, NULL); |
420 |
} else { |
421 |
bool argsOK = true; |
422 |
for (int i = 0; i < args->argsCount(); ++i) { |
423 |
if (args->arg(i)->exprType() != fn->argType(i) && !fn->acceptsArgType(i, args->arg(i)->exprType())) { |
424 |
PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects " + typeStr(fn->argType(i)) + " type, but type " + typeStr(args->arg(i)->exprType()) + " was given instead.").c_str()); |
425 |
argsOK = false; |
426 |
break; |
427 |
} else if (fn->modifiesArg(i) && !args->arg(i)->isModifyable()) { |
428 |
PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects an assignable variable.").c_str()); |
429 |
argsOK = false; |
430 |
break; |
431 |
} |
432 |
} |
433 |
$$ = new FunctionCall(name, args, argsOK ? fn : NULL); |
434 |
} |
435 |
} |
436 |
| IDENTIFIER '(' ')' { |
437 |
const char* name = $1; |
438 |
//printf("function call of '%s' (with empty args)\n", name); |
439 |
ArgsRef args = new Args; |
440 |
VMFunction* fn = context->functionProvider->functionByName(name); |
441 |
if (context->userFunctionByName(name)) { |
442 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
443 |
$$ = new FunctionCall(name, args, NULL); |
444 |
} else if (!fn) { |
445 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
446 |
$$ = new FunctionCall(name, args, NULL); |
447 |
} else if (fn->minRequiredArgs() > 0) { |
448 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
449 |
$$ = new FunctionCall(name, args, NULL); |
450 |
} else { |
451 |
$$ = new FunctionCall(name, args, fn); |
452 |
} |
453 |
} |
454 |
| IDENTIFIER { |
455 |
const char* name = $1; |
456 |
//printf("function call of '%s' (without args)\n", name); |
457 |
ArgsRef args = new Args; |
458 |
VMFunction* fn = context->functionProvider->functionByName(name); |
459 |
if (context->userFunctionByName(name)) { |
460 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
461 |
$$ = new FunctionCall(name, args, NULL); |
462 |
} else if (!fn) { |
463 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
464 |
$$ = new FunctionCall(name, args, NULL); |
465 |
} else if (fn->minRequiredArgs() > 0) { |
466 |
PARSE_ERR(@1, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
467 |
$$ = new FunctionCall(name, args, NULL); |
468 |
} else { |
469 |
$$ = new FunctionCall(name, args, fn); |
470 |
} |
471 |
} |
472 |
|
473 |
args: |
474 |
arg { |
475 |
$$ = new Args(); |
476 |
$$->add($1); |
477 |
} |
478 |
| args ',' arg { |
479 |
$$ = $1; |
480 |
$$->add($3); |
481 |
} |
482 |
|
483 |
arg: |
484 |
expr |
485 |
|
486 |
assignment: |
487 |
VARIABLE ASSIGNMENT expr { |
488 |
//printf("variable lookup with name '%s' as assignment expr\n", $1); |
489 |
const char* name = $1; |
490 |
VariableRef var = context->variableByName(name); |
491 |
if (!var) |
492 |
PARSE_ERR(@1, (String("Variable assignment: No variable declared with name '") + name + "'.").c_str()); |
493 |
else if (var->isConstExpr()) |
494 |
PARSE_ERR(@2, (String("Variable assignment: Cannot modify const variable '") + name + "'.").c_str()); |
495 |
else if (!var->isAssignable()) |
496 |
PARSE_ERR(@2, (String("Variable assignment: Variable '") + name + "' is not assignable.").c_str()); |
497 |
else if (var->exprType() != $3->exprType()) |
498 |
PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' is of type " + typeStr(var->exprType()) + ", assignment is of type " + typeStr($3->exprType()) + " though.").c_str()); |
499 |
$$ = new Assignment(var, $3); |
500 |
} |
501 |
| VARIABLE '[' expr ']' ASSIGNMENT expr { |
502 |
const char* name = $1; |
503 |
VariableRef var = context->variableByName(name); |
504 |
if (!var) |
505 |
PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str()); |
506 |
else if (var->exprType() != INT_ARR_EXPR) |
507 |
PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str()); |
508 |
else if ($3->exprType() != INT_EXPR) |
509 |
PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
510 |
else if ($6->exprType() != INT_EXPR) |
511 |
PARSE_ERR(@5, (String("Value assigned to array variable '") + name + "' must be an integer expression.").c_str()); |
512 |
IntArrayElementRef element = new IntArrayElement(var, $3); |
513 |
$$ = new Assignment(element, $6); |
514 |
} |
515 |
|
516 |
unary_expr: |
517 |
INTEGER { |
518 |
$$ = new IntLiteral($1); |
519 |
} |
520 |
| STRING { |
521 |
$$ = new StringLiteral($1); |
522 |
} |
523 |
| VARIABLE { |
524 |
//printf("variable lookup with name '%s' as unary expr\n", $1); |
525 |
VariableRef var = context->variableByName($1); |
526 |
if (var) |
527 |
$$ = var; |
528 |
else { |
529 |
PARSE_ERR(@1, (String("No variable declared with name '") + $1 + "'.").c_str()); |
530 |
$$ = new IntLiteral(0); |
531 |
} |
532 |
} |
533 |
| VARIABLE '[' expr ']' { |
534 |
const char* name = $1; |
535 |
VariableRef var = context->variableByName(name); |
536 |
if (!var) { |
537 |
PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str()); |
538 |
$$ = new IntLiteral(0); |
539 |
} else if (var->exprType() != INT_ARR_EXPR) { |
540 |
PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str()); |
541 |
$$ = new IntLiteral(0); |
542 |
} else if ($3->exprType() != INT_EXPR) { |
543 |
PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
544 |
$$ = new IntLiteral(0); |
545 |
} else { |
546 |
$$ = new IntArrayElement(var, $3); |
547 |
} |
548 |
} |
549 |
| '(' expr ')' { |
550 |
$$ = $2; |
551 |
} |
552 |
| functioncall { |
553 |
$$ = $1; |
554 |
} |
555 |
| '-' unary_expr { |
556 |
$$ = new Neg($2); |
557 |
} |
558 |
| BITWISE_NOT unary_expr { |
559 |
if ($2->exprType() != INT_EXPR) { |
560 |
PARSE_ERR(@2, (String("Right operand of bitwise operator '.not.' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
561 |
$$ = new IntLiteral(0); |
562 |
} else { |
563 |
$$ = new BitwiseNot($2); |
564 |
} |
565 |
} |
566 |
| NOT unary_expr { |
567 |
if ($2->exprType() != INT_EXPR) { |
568 |
PARSE_ERR(@2, (String("Right operand of operator 'not' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
569 |
$$ = new IntLiteral(0); |
570 |
} else { |
571 |
$$ = new Not($2); |
572 |
} |
573 |
} |
574 |
|
575 |
expr: |
576 |
concat_expr |
577 |
|
578 |
concat_expr: |
579 |
logical_or_expr |
580 |
| concat_expr '&' logical_or_expr { |
581 |
ExpressionRef lhs = $1; |
582 |
ExpressionRef rhs = $3; |
583 |
if (lhs->isConstExpr() && rhs->isConstExpr()) { |
584 |
$$ = new StringLiteral( |
585 |
lhs->evalCastToStr() + rhs->evalCastToStr() |
586 |
); |
587 |
} else { |
588 |
$$ = new ConcatString(lhs, rhs); |
589 |
} |
590 |
} |
591 |
|
592 |
logical_or_expr: |
593 |
logical_and_expr |
594 |
| logical_or_expr OR logical_and_expr { |
595 |
ExpressionRef lhs = $1; |
596 |
ExpressionRef rhs = $3; |
597 |
if (lhs->exprType() != INT_EXPR) { |
598 |
PARSE_ERR(@1, (String("Left operand of operator 'or' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
599 |
$$ = new IntLiteral(0); |
600 |
} else if (rhs->exprType() != INT_EXPR) { |
601 |
PARSE_ERR(@3, (String("Right operand of operator 'or' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
602 |
$$ = new IntLiteral(0); |
603 |
} else { |
604 |
$$ = new Or(lhs, rhs); |
605 |
} |
606 |
} |
607 |
|
608 |
logical_and_expr: |
609 |
bitwise_or_expr { |
610 |
$$ = $1; |
611 |
} |
612 |
| logical_and_expr AND bitwise_or_expr { |
613 |
ExpressionRef lhs = $1; |
614 |
ExpressionRef rhs = $3; |
615 |
if (lhs->exprType() != INT_EXPR) { |
616 |
PARSE_ERR(@1, (String("Left operand of operator 'and' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
617 |
$$ = new IntLiteral(0); |
618 |
} else if (rhs->exprType() != INT_EXPR) { |
619 |
PARSE_ERR(@3, (String("Right operand of operator 'and' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
620 |
$$ = new IntLiteral(0); |
621 |
} else { |
622 |
$$ = new And(lhs, rhs); |
623 |
} |
624 |
} |
625 |
|
626 |
bitwise_or_expr: |
627 |
bitwise_and_expr |
628 |
| bitwise_or_expr BITWISE_OR bitwise_and_expr { |
629 |
ExpressionRef lhs = $1; |
630 |
ExpressionRef rhs = $3; |
631 |
if (lhs->exprType() != INT_EXPR) { |
632 |
PARSE_ERR(@1, (String("Left operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
633 |
$$ = new IntLiteral(0); |
634 |
} else if (rhs->exprType() != INT_EXPR) { |
635 |
PARSE_ERR(@3, (String("Right operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
636 |
$$ = new IntLiteral(0); |
637 |
} else { |
638 |
$$ = new BitwiseOr(lhs, rhs); |
639 |
} |
640 |
} |
641 |
|
642 |
bitwise_and_expr: |
643 |
rel_expr { |
644 |
$$ = $1; |
645 |
} |
646 |
| bitwise_and_expr BITWISE_AND rel_expr { |
647 |
ExpressionRef lhs = $1; |
648 |
ExpressionRef rhs = $3; |
649 |
if (lhs->exprType() != INT_EXPR) { |
650 |
PARSE_ERR(@1, (String("Left operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
651 |
$$ = new IntLiteral(0); |
652 |
} else if (rhs->exprType() != INT_EXPR) { |
653 |
PARSE_ERR(@3, (String("Right operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
654 |
$$ = new IntLiteral(0); |
655 |
} else { |
656 |
$$ = new BitwiseAnd(lhs, rhs); |
657 |
} |
658 |
} |
659 |
|
660 |
rel_expr: |
661 |
add_expr |
662 |
| rel_expr '<' add_expr { |
663 |
ExpressionRef lhs = $1; |
664 |
ExpressionRef rhs = $3; |
665 |
if (lhs->exprType() != INT_EXPR) { |
666 |
PARSE_ERR(@1, (String("Left operand of operator '<' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
667 |
$$ = new IntLiteral(0); |
668 |
} else if (rhs->exprType() != INT_EXPR) { |
669 |
PARSE_ERR(@3, (String("Right operand of operator '<' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
670 |
$$ = new IntLiteral(0); |
671 |
} else { |
672 |
$$ = new Relation(lhs, Relation::LESS_THAN, rhs); |
673 |
} |
674 |
} |
675 |
| rel_expr '>' add_expr { |
676 |
ExpressionRef lhs = $1; |
677 |
ExpressionRef rhs = $3; |
678 |
if (lhs->exprType() != INT_EXPR) { |
679 |
PARSE_ERR(@1, (String("Left operand of operator '>' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
680 |
$$ = new IntLiteral(0); |
681 |
} else if (rhs->exprType() != INT_EXPR) { |
682 |
PARSE_ERR(@3, (String("Right operand of operator '>' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
683 |
$$ = new IntLiteral(0); |
684 |
} else { |
685 |
$$ = new Relation(lhs, Relation::GREATER_THAN, rhs); |
686 |
} |
687 |
} |
688 |
| rel_expr LE add_expr { |
689 |
ExpressionRef lhs = $1; |
690 |
ExpressionRef rhs = $3; |
691 |
if (lhs->exprType() != INT_EXPR) { |
692 |
PARSE_ERR(@1, (String("Left operand of operator '<=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
693 |
$$ = new IntLiteral(0); |
694 |
} else if (rhs->exprType() != INT_EXPR) { |
695 |
PARSE_ERR(@3, (String("Right operand of operator '<=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
696 |
$$ = new IntLiteral(0); |
697 |
} else { |
698 |
$$ = new Relation(lhs, Relation::LESS_OR_EQUAL, rhs); |
699 |
} |
700 |
} |
701 |
| rel_expr GE add_expr { |
702 |
ExpressionRef lhs = $1; |
703 |
ExpressionRef rhs = $3; |
704 |
if (lhs->exprType() != INT_EXPR) { |
705 |
PARSE_ERR(@1, (String("Left operand of operator '>=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
706 |
$$ = new IntLiteral(0); |
707 |
} else if (rhs->exprType() != INT_EXPR) { |
708 |
PARSE_ERR(@3, (String("Right operand of operator '>=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
709 |
$$ = new IntLiteral(0); |
710 |
} else { |
711 |
$$ = new Relation(lhs, Relation::GREATER_OR_EQUAL, rhs); |
712 |
} |
713 |
} |
714 |
| rel_expr '=' add_expr { |
715 |
$$ = new Relation($1, Relation::EQUAL, $3); |
716 |
} |
717 |
| rel_expr '#' add_expr { |
718 |
$$ = new Relation($1, Relation::NOT_EQUAL, $3); |
719 |
} |
720 |
|
721 |
add_expr: |
722 |
mul_expr |
723 |
| add_expr '+' mul_expr { |
724 |
ExpressionRef lhs = $1; |
725 |
ExpressionRef rhs = $3; |
726 |
if (lhs->exprType() != INT_EXPR) { |
727 |
PARSE_ERR(@1, (String("Left operand of operator '+' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
728 |
$$ = new IntLiteral(0); |
729 |
} else if (rhs->exprType() != INT_EXPR) { |
730 |
PARSE_ERR(@3, (String("Right operand of operator '+' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
731 |
$$ = new IntLiteral(0); |
732 |
} else { |
733 |
$$ = new Add(lhs,rhs); |
734 |
} |
735 |
} |
736 |
| add_expr '-' mul_expr { |
737 |
ExpressionRef lhs = $1; |
738 |
ExpressionRef rhs = $3; |
739 |
if (lhs->exprType() != INT_EXPR) { |
740 |
PARSE_ERR(@1, (String("Left operand of operator '-' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
741 |
$$ = new IntLiteral(0); |
742 |
} else if (rhs->exprType() != INT_EXPR) { |
743 |
PARSE_ERR(@3, (String("Right operand of operator '-' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
744 |
$$ = new IntLiteral(0); |
745 |
} else { |
746 |
$$ = new Sub(lhs,rhs); |
747 |
} |
748 |
} |
749 |
|
750 |
mul_expr: |
751 |
unary_expr |
752 |
| mul_expr '*' unary_expr { |
753 |
ExpressionRef lhs = $1; |
754 |
ExpressionRef rhs = $3; |
755 |
if (lhs->exprType() != INT_EXPR) { |
756 |
PARSE_ERR(@1, (String("Left operand of operator '*' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
757 |
$$ = new IntLiteral(0); |
758 |
} else if (rhs->exprType() != INT_EXPR) { |
759 |
PARSE_ERR(@3, (String("Right operand of operator '*' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
760 |
$$ = new IntLiteral(0); |
761 |
} else { |
762 |
$$ = new Mul(lhs,rhs); |
763 |
} |
764 |
} |
765 |
| mul_expr '/' unary_expr { |
766 |
ExpressionRef lhs = $1; |
767 |
ExpressionRef rhs = $3; |
768 |
if (lhs->exprType() != INT_EXPR) { |
769 |
PARSE_ERR(@1, (String("Left operand of operator '/' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
770 |
$$ = new IntLiteral(0); |
771 |
} else if (rhs->exprType() != INT_EXPR) { |
772 |
PARSE_ERR(@3, (String("Right operand of operator '/' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
773 |
$$ = new IntLiteral(0); |
774 |
} else { |
775 |
$$ = new Div(lhs,rhs); |
776 |
} |
777 |
} |
778 |
| mul_expr MOD unary_expr { |
779 |
ExpressionRef lhs = $1; |
780 |
ExpressionRef rhs = $3; |
781 |
if (lhs->exprType() != INT_EXPR) { |
782 |
PARSE_ERR(@1, (String("Left operand of modulo operator must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
783 |
$$ = new IntLiteral(0); |
784 |
} else if (rhs->exprType() != INT_EXPR) { |
785 |
PARSE_ERR(@3, (String("Right operand of modulo operator must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
786 |
$$ = new IntLiteral(0); |
787 |
} else { |
788 |
$$ = new Mod(lhs,rhs); |
789 |
} |
790 |
} |
791 |
|
792 |
%% |
793 |
|
794 |
void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err) { |
795 |
//fprintf(stderr, "%d: %s\n", locp->first_line, err); |
796 |
context->addErr(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, err); |
797 |
} |
798 |
|
799 |
void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt) { |
800 |
//fprintf(stderr, "WRN %d: %s\n", locp->first_line, txt); |
801 |
context->addWrn(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, txt); |
802 |
} |
803 |
|
804 |
/// Custom implementation of yytnamerr() to ensure quotation is always stripped from token names before printing them to error messages. |
805 |
int InstrScript_tnamerr(char* yyres, const char* yystr) { |
806 |
if (*yystr == '"') { |
807 |
int yyn = 0; |
808 |
char const *yyp = yystr; |
809 |
for (;;) |
810 |
switch (*++yyp) |
811 |
{ |
812 |
/* |
813 |
case '\'': |
814 |
case ',': |
815 |
goto do_not_strip_quotes; |
816 |
|
817 |
case '\\': |
818 |
if (*++yyp != '\\') |
819 |
goto do_not_strip_quotes; |
820 |
*/ |
821 |
/* Fall through. */ |
822 |
default: |
823 |
if (yyres) |
824 |
yyres[yyn] = *yyp; |
825 |
yyn++; |
826 |
break; |
827 |
|
828 |
case '"': |
829 |
if (yyres) |
830 |
yyres[yyn] = '\0'; |
831 |
return yyn; |
832 |
} |
833 |
do_not_strip_quotes: ; |
834 |
} |
835 |
|
836 |
if (! yyres) |
837 |
return yystrlen (yystr); |
838 |
|
839 |
return yystpcpy (yyres, yystr) - yyres; |
840 |
} |