f207d74aec
Four roadmap items: - codegen: fix parenthesized string comparison. emit_atom didn't consume the body of a string-literal token (`"`), so for PRINT (A$+B$ < "ZZZ") it emitted a 0 placeholder, advanced one byte, and left "ZZZ" to be reparsed as a variable + extra trailing tokens -- the binary then failed to link with `var_ZZ_sng` undeclared. emit_atom now skips to the closing quote. Separately, the left_type tracking in emit_num_prec dropped VT_STR after a string + string concat (becoming VT_SNG), so the string-comparison codepath skipped when the relational operator arrived. Preserve VT_STR through TOK_PLUS when both operands are strings. Verified: paren string-cmp now compiles and produces the same -1 / 0 result as the interpreter. - compiler: --no-gc-check and --fast-math optimization flags. --no-gc-check skips the per-line gwrt_check_line() (no string-pool GC, no Ctrl+Break trap). --fast-math drops the divide-by-zero guard on `/`; the divisor still goes through (double) so 10/0 produces inf rather than SIGFPE. Both threaded through codegen_opts_t and exposed in --help. --inline-arrays from the roadmap deferred -- larger refactor. - interp: raise static caps on 32-bit / Linux builds. vars 256 -> 1024, arrays 64 -> 256, MAX_FOR_DEPTH 16 -> 64, MAX_GOSUB_DEPTH 24 -> 128, MAX_WHILE_DEPTH 16 -> 64. Codegen FOR_STACK_MAX 16 -> 64. Analysis-pass caps: MAX_LINES 4096 -> 8192, MAX_VARS 256 -> 1024, MAX_GOTOS 256 -> 1024, MAX_DATA 1024 -> 4096, MAX_GOSUB_RET 256 -> 1024. 16-bit DOS keeps the original modest caps via #ifdef _M_I86 -- the MEDIUM model has a single 64KB DGROUP for all static data and the bumped sizes broke runtime startup under DOSBox-X. 16-bit binary grew from 128KB to 132KB from the offset_secs field plus DATE$/TIME$ shift code, well within the FreeDOS budget. - interp + codegen: DATE$ / TIME$ assignment via process-local clock offset. Was a no-op accept-and-ignore. Now sets gw.time_offset_secs (long), and DATE$ / TIME$ / TIMER readers apply it to time(NULL) before formatting. The OS clock is unaffected (would need root). Compiled-binary readers also reference gw.time_offset_secs since libgwrt shares the gw struct. Verified: PRINT DATE$; DATE$="12-31-1999"; PRINT DATE$ shows the expected before/after in both interpreter and AOT paths. After these changes: 72/72 interpreter tests, 68/68 compat, 63/63 compiler tests, DOS smoke under DOSBox-X all pass. Build clean on both Linux (cmake) and 16-bit DOS (build_dos.sh 16).
20 lines
603 B
C
20 lines
603 B
C
#ifndef CODEGEN_H
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#define CODEGEN_H
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#include "analysis.h"
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#include <stdbool.h>
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#include <stdio.h>
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typedef struct {
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bool safe_mode; /* --safe: emit runtime safety checks */
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bool warn_mode; /* --warn: static analysis warnings */
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bool no_gc_check; /* --no-gc-check: skip gwrt_check_line per line
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* (no string-pool GC, no Ctrl+Break check) */
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bool fast_math; /* --fast-math: skip / by-zero checks */
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} codegen_opts_t;
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/* Generate C source from the analyzed program */
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void codegen_emit(FILE *out, analysis_t *a, const codegen_opts_t *opts);
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#endif
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