The first stages of Quake-Pascal.
At present, this parses a subset of the pascal language with a few type extensions. There is already work on the type system.
This commit is contained in:
Bill Currie
parent
ae4ca52661
commit
fed82466cc
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@ -37,17 +37,19 @@ YFLAGS = -v -d
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if BUILD_QFCC
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qfcc=qfcc
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qfpc=qfpc
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qfpreqcc=qfpreqcc
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qfprogs=qfprogs
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else
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qfcc=
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qfpc=
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qfpreqcc=
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qfprogs=
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endif
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bin_PROGRAMS= $(qfcc) $(qfprogs)
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bin_PROGRAMS= $(qfcc) $(qfpc) $(qfprogs)
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bin_SCRIPTS= $(qfpreqcc)
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EXTRA_PROGRAMS= qfcc qfprogs
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EXTRA_PROGRAMS= qfcc qfpc qfprogs
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common_src=\
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class.c constfold.c cpp.c debug.c def.c emit.c expr.c function.c grab.c \
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@ -59,11 +61,16 @@ qfcc_SOURCES= qc-lex.l qc-parse.y $(common_src)
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qfcc_LDADD= $(QFCC_LIBS)
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qfcc_DEPENDENCIES= $(QFCC_DEPS)
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qfpc_SOURCES= qp-lex.l qp-parse.y $(common_src)
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qfpc_LDADD= $(QFCC_LIBS)
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qfpc_DEPENDENCIES= $(QFCC_DEPS)
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qfprogs_SOURCES= \
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disassemble.c globals.c lines.c modules.c obj_file.c stub.c qfprogs.c strings.c
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qfprogs_LDADD= $(QFCC_LIBS)
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qfprogs_DEPENDENCIES= $(QFCC_DEPS)
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BUILT_SOURCES=qc-parse.c qc-parse.h qc-lex.c
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BUILT_SOURCES=qc-parse.c qc-parse.h qc-lex.c qp-parse.c qp-parse.h qp-lex.c
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EXTRA_DIST=qc-lex.c qc-parse.c qc-parse.h qfpreqcc
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EXTRA_DIST=qc-lex.c qc-parse.c qc-parse.h qfpreqcc \
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qp-parse.c qp-parse.h qp-lex.c
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@ -0,0 +1,242 @@
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%{
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/*
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qp-lex.l
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lexer for QuakePascal
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Copyright (C) 2011 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2011/01/06
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((used)) const char rcsid[] = "$Id$";
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#include "QF/hash.h"
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#include "debug.h"
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#include "expr.h"
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#include "grab.h"
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#include "qfcc.h"
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#include "type.h"
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#include "qp-parse.h"
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#ifndef YY_PROTO
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# define YY_PROTO(x) x
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#else
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# define YY_FLEX_REALLOC_HACK
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#endif
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int yyget_lineno (void);
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FILE *yyget_in (void);
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FILE *yyget_out (void);
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int yyget_leng (void);
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char *yyget_text (void);
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void yyset_lineno (int line_number);
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void yyset_in (FILE * in_str);
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void yyset_out (FILE * out_str);
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int yyget_debug (void);
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void yyset_debug (int bdebug);
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int yylex_destroy (void);
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#define YY_NO_UNPUT
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#define YY_DECL int yylex YY_PROTO(( void ))
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YY_DECL;
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static int keyword_or_id (const char *token);
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%}
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s [ \t]
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m [\-+]
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D [0-9]
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X [0-9a-fA-F]
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ID [a-zA-Z_][0-9a-zA-Z_]*
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FLOAT ({D}+|{D}*\.{D}+|{D}+\.{D}*)([eE]{m}?{D}+)?
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INTEGER ({D}+|0[xX]{X}+)
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RELOP (=|<>|[<>]=?)
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ADDOP [\-+]
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MULOP [*/]
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ASSIGNOP :=
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RANGE \.\.
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%x GRAB_FRAME GRAB_OTHER COMMENT
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%%
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grab_frame = -GRAB_FRAME;
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grab_other = -GRAB_OTHER;
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"{" { BEGIN (COMMENT); }
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<COMMENT>"{" { warning (0, "nested { in comment"); }
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<COMMENT>"}" { BEGIN (INITIAL); }
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<COMMENT>\r*\n { pr.source_line++; }
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<COMMENT>. /* nothing to do, with people like you */
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<COMMENT><<EOF>> { error (0, "EOF in comment"); return 0; }
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^#{s}+{D}+{s}+\"(\.|[^"\n])*\".*$ { line_info (yytext + 1); }
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^#line{s}+{D}+{s}+\"(\.|[^"\n])*\".*$ { line_info (yytext + 1); }
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{INTEGER} {
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yylval.integer_val = strtol (yytext, 0, 0);
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return INT_VAL;
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}
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{FLOAT} {
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yylval.float_val = strtof (yytext, 0);
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return FLOAT_VAL;
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}
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{ID} return keyword_or_id (yytext);
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\"(\\.|[^"\\])*\" {
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yylval.string_val = make_string (yytext, 0);
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return STRING_VAL;
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}
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'{s}*{m}{FLOAT}{s}+{m}{FLOAT}{s}+{m}{FLOAT}{s}*' {
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sscanf (yytext, "' %f %f %f '",
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&yylval.vector_val[0], &yylval.vector_val[1],
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&yylval.vector_val[2]);
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return VECTOR_VAL;
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}
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'{s}*{m}{FLOAT}{s}+{m}{FLOAT}{s}+{m}{FLOAT}{s}+{m}{FLOAT}{s}*' {
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sscanf (yytext, "' %f %f %f %f '",
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&yylval.quaternion_val[0],
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&yylval.quaternion_val[1],
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&yylval.quaternion_val[2],
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&yylval.quaternion_val[3]);
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return QUATERNION_VAL;
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}
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{RELOP} {
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yylval.string_val = save_string (yytext);
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return RELOP;
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}
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{ADDOP} {
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yylval.integer_val = yytext[0];
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return ADDOP;
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}
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{MULOP} {
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yylval.integer_val = yytext[0];
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return MULOP;
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}
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{ASSIGNOP} return ASSIGNOP;
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{RANGE} return RANGE;
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[!(){}.&|^~\[\];,#%?:] return yytext[0];
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<*>\r*\n {
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pr.source_line++;
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BEGIN (INITIAL);
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}
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<*>{s}* /* skip whitespace */
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<*>. error (0, "all your typo are belong to us");
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%%
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int
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yywrap (void)
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{
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return 1;
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}
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typedef struct {
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const char *name;
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int value;
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type_t *type;
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} keyword_t;
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static keyword_t keywords[] = {
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{"real", TYPE, &type_float},
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{"string", TYPE, &type_string},
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{"vector", TYPE, &type_vector},
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{"entity", TYPE, &type_entity},
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{"quaternion", TYPE, &type_quaternion},
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{"integer", TYPE, &type_integer},
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{"program", PROGRAM, 0},
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{"var", VAR, 0},
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{"array", ARRAY, 0},
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{"of", OF, 0},
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{"function", FUNCTION, 0},
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{"prodedure", PROCEDURE, 0},
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{"begin", PBEGIN, 0},
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{"end", END, 0},
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{"if", IF, 0},
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{"then", THEN, 0},
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{"else", ELSE, 0},
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{"while", WHILE, 0},
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{"do", DO, 0},
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{"or", ADDOP, 0},
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{"div", MULOP, 0},
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{"mod", MULOP, 0},
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{"and", MULOP, 0},
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{"not", NOT, 0},
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};
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static const char *
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keyword_get_key (void *kw, void *unused)
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{
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return ((keyword_t *) kw)->name;
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}
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static int
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keyword_or_id (const char *token)
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{
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static hashtab_t *keyword_tab;
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keyword_t *keyword;
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if (!keyword_tab) {
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size_t i;
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keyword_tab = Hash_NewTable (1021, keyword_get_key, 0, 0);
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for (i = 0; i < sizeof (keywords) / sizeof (keywords[0]); i++)
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Hash_Add (keyword_tab, &keywords[i]);
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}
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keyword = Hash_Find (keyword_tab, token);
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if (keyword) {
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if (keyword->value == ADDOP || keyword->value == MULOP) {
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yylval.integer_val = yytext[0];
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} else {
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yylval.type = keyword->type;
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}
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return keyword->value;
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}
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yylval.string_val = save_string (token);
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return ID;
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}
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#ifdef YY_FLEX_REALLOC_HACK
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static __attribute__ ((used)) void *(*const yy_flex_realloc_hack)(void *,yy_size_t) = yy_flex_realloc;
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#else
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static __attribute__ ((used)) void (*yyunput_hack)(int, char*) = yyunput;
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static __attribute__ ((used)) int (*input_hack)(void) = input;
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#endif
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@ -0,0 +1,268 @@
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%{
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/*
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qc-parse.y
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parser for quakec
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Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2001/06/12
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This program is free software; you can redistribute it and/or
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||||
modify it under the terms of the GNU General Public License
|
||||
as published by the Free Software Foundation; either version 2
|
||||
of the License, or (at your option) any later version.
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|
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This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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||||
|
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See the GNU General Public License for more details.
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||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to:
|
||||
|
||||
Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((used)) const char rcsid[] = "$Id$";
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#include "class.h"
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#include "expr.h"
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#include "function.h"
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#include "type.h"
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#define YYDEBUG 1
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#define YYERROR_VERBOSE 1
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#undef YYERROR_VERBOSE
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extern char *yytext;
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static void
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yyerror (const char *s)
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||||
{
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||||
#ifdef YYERROR_VERBOSE
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error (0, "%s %s\n", yytext, s);
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#else
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error (0, "%s before %s", s, yytext);
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#endif
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}
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static void
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parse_error (void)
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{
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error (0, "parse error before %s", yytext);
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}
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||||
|
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#define PARSE_ERROR do { parse_error (); YYERROR; } while (0)
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int yylex (void);
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|
||||
%}
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|
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%union {
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int op;
|
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struct def_s *def;
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struct hashtab_s *def_list;
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||||
struct type_s *type;
|
||||
struct typedef_s *typename;
|
||||
struct expr_s *expr;
|
||||
int integer_val;
|
||||
unsigned uinteger_val;
|
||||
float float_val;
|
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const char *string_val;
|
||||
float vector_val[3];
|
||||
float quaternion_val[4];
|
||||
struct function_s *function;
|
||||
struct switch_block_s *switch_block;
|
||||
struct param_s *param;
|
||||
struct method_s *method;
|
||||
struct class_s *class;
|
||||
struct category_s *category;
|
||||
struct class_type_s *class_type;
|
||||
struct protocol_s *protocol;
|
||||
struct protocollist_s *protocol_list;
|
||||
struct keywordarg_s *keywordarg;
|
||||
struct methodlist_s *methodlist;
|
||||
struct struct_s *strct;
|
||||
}
|
||||
|
||||
%nonassoc IFX
|
||||
%nonassoc ELSE
|
||||
|
||||
%left <string_val> RELOP
|
||||
%left <integer_val> ADDOP
|
||||
%left <integer_val> MULOP
|
||||
%right UNARY
|
||||
|
||||
%token <type> TYPE
|
||||
%token <string_val> ID
|
||||
%token <integer_val> INT_VAL
|
||||
%token <string_val> STRING_VAL
|
||||
%token <quaternion_val> QUATERNION_VAL
|
||||
%token <vector_val> VECTOR_VAL
|
||||
%token <float_val> FLOAT_VAL
|
||||
|
||||
%token PROGRAM VAR ARRAY OF FUNCTION PROCEDURE PBEGIN END IF THEN ELSE
|
||||
%token WHILE DO RANGE ASSIGNOP NOT
|
||||
|
||||
%type <type> standard_type type
|
||||
%type <expr> const num
|
||||
|
||||
%{
|
||||
function_t *current_func;
|
||||
class_type_t *current_class;
|
||||
expr_t *local_expr;
|
||||
scope_t *current_scope;
|
||||
|
||||
%}
|
||||
|
||||
%%
|
||||
|
||||
program
|
||||
: program_header
|
||||
declarations
|
||||
subprogram_declarations
|
||||
compound_statement
|
||||
'.'
|
||||
;
|
||||
|
||||
program_header
|
||||
: PROGRAM ID '(' identifier_list ')' ';'
|
||||
;
|
||||
|
||||
identifier_list
|
||||
: ID
|
||||
| identifier_list ',' ID
|
||||
;
|
||||
|
||||
declarations
|
||||
: declarations VAR identifier_list ':' type ';'
|
||||
| /* empty */
|
||||
;
|
||||
|
||||
type
|
||||
: standard_type { $$ = $1; }
|
||||
| ARRAY '[' num RANGE num ']' OF standard_type
|
||||
{
|
||||
int top = $5->e.integer_val;
|
||||
int bot = $3->e.integer_val;
|
||||
$$ = array_type ($8, top - bot + 1);
|
||||
}
|
||||
;
|
||||
|
||||
standard_type
|
||||
: TYPE { $$ = $1; }
|
||||
;
|
||||
|
||||
subprogram_declarations
|
||||
: subprogram_declarations subprogram_declaration
|
||||
| /* emtpy */
|
||||
;
|
||||
|
||||
subprogram_declaration
|
||||
: subprogram_head ';' declarations compound_statement ';'
|
||||
| subprogram_head '=' '#' const ';'
|
||||
;
|
||||
|
||||
subprogram_head
|
||||
: FUNCTION ID arguments ':' standard_type
|
||||
| PROCEDURE ID arguments
|
||||
;
|
||||
|
||||
arguments
|
||||
: '(' parameter_list ')'
|
||||
| /* emtpy */
|
||||
;
|
||||
|
||||
parameter_list
|
||||
: identifier_list ':' type
|
||||
| parameter_list ';' identifier_list ':' type
|
||||
;
|
||||
|
||||
compound_statement
|
||||
: PBEGIN optional_statements END
|
||||
;
|
||||
|
||||
optional_statements
|
||||
: statement_list
|
||||
| /* emtpy */
|
||||
;
|
||||
|
||||
statement_list
|
||||
: statement
|
||||
| statement_list ';' statement
|
||||
;
|
||||
|
||||
statement
|
||||
: variable ASSIGNOP expression
|
||||
| procedure_statement
|
||||
| compound_statement
|
||||
| IF expression THEN statement ELSE statement
|
||||
| IF expression THEN statement %prec IFX
|
||||
| WHILE expression DO statement
|
||||
;
|
||||
|
||||
variable
|
||||
: ID
|
||||
| ID '[' expression ']'
|
||||
;
|
||||
|
||||
procedure_statement
|
||||
: ID
|
||||
| ID '(' expression_list ')'
|
||||
;
|
||||
|
||||
expression_list
|
||||
: expression
|
||||
| expression_list ',' expression
|
||||
;
|
||||
|
||||
unary_expr
|
||||
: primary
|
||||
| sign unary_expr %prec UNARY
|
||||
| NOT expression %prec UNARY
|
||||
;
|
||||
|
||||
primary
|
||||
: variable
|
||||
| const
|
||||
| ID '(' expression_list ')'
|
||||
| '(' expression ')'
|
||||
;
|
||||
|
||||
expression
|
||||
: unary_expr
|
||||
| expression RELOP expression
|
||||
| expression ADDOP expression
|
||||
| expression MULOP expression
|
||||
;
|
||||
|
||||
sign
|
||||
: ADDOP
|
||||
{
|
||||
if ($1 == 'o')
|
||||
PARSE_ERROR;
|
||||
}
|
||||
;
|
||||
|
||||
const
|
||||
: num
|
||||
| STRING_VAL { $$ = new_string_expr ($1); }
|
||||
;
|
||||
|
||||
num
|
||||
: INT_VAL { $$ = new_integer_expr ($1); }
|
||||
| FLOAT_VAL { $$ = new_float_expr ($1); }
|
||||
| VECTOR_VAL { $$ = new_vector_expr ($1); }
|
||||
| QUATERNION_VAL { $$ = new_quaternion_expr ($1); }
|
||||
;
|
||||
|
||||
%%
|
||||
Loading…
Reference in New Issue