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Use string concatenation for header building #59

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Use string concatenation for header building #59

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5f3ece2
Use string concatenation for header building
RedYetiDev Apr 8, 2024
aa943e7
Apply suggestions from code review
RedYetiDev Aug 7, 2024
1fa1fbf
Merge branch 'main' into patch-1
RedYetiDev Aug 7, 2024
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104 changes: 45 additions & 59 deletions src/compiler/header-builder.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,72 +10,58 @@ export interface IHeaderBuilderOptions {

export class HeaderBuilder {
public build(options: IHeaderBuilderOptions): string {
let res = '';
const PREFIX = options.prefix.toUpperCase().replace(/[^a-z]/gi, '_');
const DEFINE = options.headerGuard === undefined ?
`INCLUDE_${PREFIX}_H_` :
options.headerGuard;
const DEFINE = options.headerGuard ?? `INCLUDE_${PREFIX}_H_`;

res += `#ifndef ${DEFINE}\n`;
res += `#define ${DEFINE}\n`;
res += '#ifdef __cplusplus\n';
res += 'extern "C" {\n';
res += '#endif\n';
res += '\n';

res += '#include <stdint.h>\n';
res += '\n';

// Structure
res += `typedef struct ${options.prefix}_s ${options.prefix}_t;\n`;
res += `struct ${options.prefix}_s {\n`;
res += ' int32_t _index;\n';

for (const [ index, field ] of options.spans.entries()) {
res += ` void* _span_pos${index};\n`;
const structure = options.spans.map((field, index) => {
let spanField = `void* _span_pos${index};`;
if (field.callbacks.length > 1) {
res += ` void* _span_cb${index};\n`;
spanField += `void* _span_cb${index};`;
}
}

res += ' int32_t error;\n';
res += ' const char* reason;\n';
res += ' const char* error_pos;\n';
res += ' void* data;\n';
res += ' void* _current;\n';
return spanField;
}).join('\n');

for (const prop of options.properties) {
const properties = options.properties.map(prop => {
let ty: string;
if (prop.ty === 'i8') {
ty = 'uint8_t';
} else if (prop.ty === 'i16') {
ty = 'uint16_t';
} else if (prop.ty === 'i32') {
ty = 'uint32_t';
} else if (prop.ty === 'i64') {
ty = 'uint64_t';
} else if (prop.ty === 'ptr') {
ty = 'void*';
} else {
throw new Error(
`Unknown state property type: "${prop.ty}"`);
switch (prop.ty) {
case 'i8':
ty = 'uint8_t';
break;
case 'i16':
ty = 'uint16_t';
break;
case 'i32':
ty = 'uint32_t';
break;
case 'i64':
ty = 'uint64_t';
break;
case 'ptr':
ty = 'void*';
break;
default:
throw new Error(`Unknown state property type: "${prop.ty}"`);
}
res += ` ${ty} ${prop.name};\n`;
}
res += '};\n';

res += '\n';

res += `int ${options.prefix}_init(${options.prefix}_t* s);\n`;
res += `int ${options.prefix}_execute(${options.prefix}_t* s, ` +
'const char* p, const char* endp);\n';

res += '\n';
res += '#ifdef __cplusplus\n';
res += '} /* extern "C" */\n';
res += '#endif\n';
res += `#endif /* ${DEFINE} */\n`;
return `${ty} ${prop.name};`;
}).join('\n');

return res;
return `#ifndef ${DEFINE}\n#define ${DEFINE}\n` +
'#ifdef __cplusplus\nextern "C" {\n#endif\n\n' +
'#include <stdint.h>\n\n' +
`typedef struct ${options.prefix}_s ${options.prefix}_t;\n` +
`struct ${options.prefix}_s {\n` +
' int32_t _index;\n' +
` ${structure}\n` +
' int32_t error;\n' +
' const char* reason;\n' +
' const char* error_pos;\n' +
' void* data;\n' +
' void* _current;\n' +
` ${properties}\n` +
'};\n\n' +
`int ${options.prefix}_init(${options.prefix}_t* s);\n` +
`int ${options.prefix}_execute(${options.prefix}_t* s, const char* p, const char* endp);\n\n` +
'#ifdef __cplusplus\n} /* extern "C" */\n#endif\n' +
`#endif /* ${DEFINE} */\n`;
}
}