150 lines
2.7 KiB
C
150 lines
2.7 KiB
C
#ifndef PARSER_TREE_H
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#define PARSER_TREE_H
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#include <stdbool.h>
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#include "tokenizer.h"
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#include "util.h"
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// Forward declarations
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struct classvardec;
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struct parameter;
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struct subroutbody;
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struct subroutdec;
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struct vardec;
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struct letstatement;
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struct ifstatement;
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struct condstatement;
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struct subroutcall;
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struct term;
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struct expressionlist;
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// Misc
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typedef struct {
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char* file;
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int definedat;
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} DEBUGINFO;
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// Program structure
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typedef struct class {
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char* name;
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struct classvardec* vardecs;
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struct subroutdec* subroutdecs;
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DEBUGINFO* debug;
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struct class* next;
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} CLASS;
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typedef enum {
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stat, field
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} CLASSVARTYPE;
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typedef struct classvardec {
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CLASSVARTYPE type;
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struct vardec* base;
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struct classvardec* next;
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} CLASSVARDEC;
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typedef enum {
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constructor, function, method
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} SUBROUTCLASS;
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typedef struct subroutdec {
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SUBROUTCLASS subroutclass;
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CLASS* class;
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char* type;
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char* name;
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struct parameter* parameters;
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struct subroutbody* body;
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DEBUGINFO* debug;
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struct subroutdec* next;
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} SUBROUTDEC;
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typedef struct parameter {
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char* type;
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char* name;
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bool primitive;
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DEBUGINFO* debug;
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struct parameter* next;
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} PARAMETER;
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typedef struct subroutbody {
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struct vardec* vardecs;
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struct statement* statements;
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} SUBROUTBODY;
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typedef struct vardec {
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char* type;
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bool primitive;
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TOKENTYPE typeclass;
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STRINGLIST* names;
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DEBUGINFO* debug;
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struct vardec* next;
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} VARDEC;
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// Statements
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typedef enum {
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ifstatement, whilestatement, letstatement, dostatement, returnstatement
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} STATEMENTTYPE;
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typedef struct statement {
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STATEMENTTYPE type;
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union {
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struct letstatement* letstatement;
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struct ifstatement* ifstatement;
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struct condstatement* whilestatement;
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struct subroutcall* dostatement;
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struct term* retstatement;
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};
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DEBUGINFO* debug;
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struct statement* next;
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} STATEMENT;
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typedef struct letstatement {
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char* varname;
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struct term* arrayind;
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struct term* expression;
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} LETSTATEMENT;
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typedef struct ifstatement {
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struct condstatement* base;
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struct statement* elsestatements;
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} IFSTATEMENT;
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typedef struct condstatement {
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struct term* expression;
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struct statement* statements;
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} CONDSTATEMENT;
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// Expressions
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typedef enum {
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varname, intconstant, stringconstant, keywordconstant, arrayitem, subroutcall, innerexpression, unaryopterm
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} TERMTYPE;
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typedef struct term {
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TERMTYPE type;
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union {
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char* string;
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int integer;
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struct subroutcall* call;
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struct term* expression;
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};
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struct term* arrayexp;
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char op;
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char unaryop;
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struct term* next;
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} TERM;
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typedef struct subroutcall {
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char* parentname;
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char* name;
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struct expressionlist* parameters;
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DEBUGINFO* debug;
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} SUBROUTCALL;
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typedef struct expressionlist {
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TERM* expression;
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struct expressionlist* next;
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} EXPRESSIONLIST;
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#endif
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