110 lines
1.9 KiB
C
110 lines
1.9 KiB
C
#ifndef FZL_PARSER_H
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#define FZL_PARSER_H
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#include <compiler/fzl_reader.h>
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#include <compiler/fzl_token.h>
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#include <stddef.h>
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// AST node type
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typedef enum
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{
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FZL_NODETYPE_BLOCK,
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FZL_NODETYPE_CALL,
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FZL_NODETYPE_LITERAL,
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FZL_NODETYPE_IDENTIFIER,
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FZL_NODETYPE_ADD,
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FZL_NODETYPE_SUB,
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FZL_NODETYPE_MUL,
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FZL_NODETYPE_DIV,
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FZL_NODETYPE_POW,
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FZL_NODETYPE_MOD,
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FZL_NODETYPE_UNARY_PLUS,
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FZL_NODETYPE_UNARY_MINUS,
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FZL_NODETYPE_DECLARATION,
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FZL_NODETYPE_ASSIGN
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} fzl_nodetype_t;
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// AST node descriptor
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typedef struct fzl_node
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{
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fzl_nodetype_t type;
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fzl_token_t *token;
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struct fzl_node *parent;
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struct fzl_node *next;
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union
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{
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// Array of nested nodes (for blocks, etc)
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struct
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{
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struct fzl_node **entries;
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size_t entry_count;
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} list;
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// Call data
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struct
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{
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struct fzl_node *callee;
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struct fzl_node **args;
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size_t args_count;
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} call;
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// Binary operations
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struct
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{
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struct fzl_node *left;
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struct fzl_node *right;
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} binary_op;
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// Unary operations
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struct
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{
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struct fzl_node *operand;
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} unary_op;
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// Variables declaration and initializing
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struct
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{
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fzl_token_t *type;
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struct fzl_node *identifier;
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} var;
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};
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} fzl_node_t;
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// Token sequence parser descriptor
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typedef struct
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{
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fzl_reader_ll_t *first;
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size_t token_count;
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fzl_reader_ll_t *cursor;
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fzl_node_t *root;
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} fzl_parser_t;
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// Allocate parser
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fzl_parser_t *fzl_mkparser(fzl_reader_ll_t *first);
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// Allocate new node
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fzl_node_t *fzl_mknode(fzl_nodetype_t type, fzl_token_t *tok);
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// Parse tokens
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int fzl_parse(fzl_parser_t *parser);
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// Get last parser error
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char *fzl_parser_geterror();
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// Free node
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void fzl_freenode(fzl_node_t *node);
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// Free entire AST going from root node
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void fzl_freeast(fzl_node_t *root);
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// Free parser
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void fzl_freeparser(fzl_parser_t *parser);
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#endif // FZL_PARSER_H
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